CA2178991A1 - Programmable termination strip for electric motor - Google Patents
Programmable termination strip for electric motorInfo
- Publication number
- CA2178991A1 CA2178991A1 CA002178991A CA2178991A CA2178991A1 CA 2178991 A1 CA2178991 A1 CA 2178991A1 CA 002178991 A CA002178991 A CA 002178991A CA 2178991 A CA2178991 A CA 2178991A CA 2178991 A1 CA2178991 A1 CA 2178991A1
- Authority
- CA
- Canada
- Prior art keywords
- wire
- terminal
- electric motor
- stator
- strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/03—Machines characterised by the wiring boards, i.e. printed circuit boards or similar structures for connecting the winding terminations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
Abstract
A programmable terminal strip for connecting the internal electrical conductors of an electrical device, such as the phase windings of an electric motor, with a plurality of external electrical conductors includes a plurality of pockets formed thereon. Each of the pockets is provided to form a terminal for the programmable terminal strip. To accomplish this, one end of one of the internal electrical conductors is connected to a wire terminal member installed within the pocket so as to provide an electrical connection therebetween. A
plurality of external electrical conductor and terminal assemblies are provided for use with the programmable terminal strip. A first embodiment of the externalconductor assembly includes an insulated external electrical conductor wire having a metallic wire terminal member secured thereto. The wire terminal member is adapted to be inserted into the pocket to provide an electrical connection therebetween. A second embodiment of the external electrical conductor and terminal assembly includes an insulated external electrical conductor wire having a first metallic wire terminal member secured thereto.
However, a jumper wire is also connected to the first wire terminal member, and a second wire terminal member is connected to the end of the jumper wire. The wire terminal members are adapted to be inserted into the pockets to provide electrical connections therebetween. The external electrical conductor and terminal assemblies can be connected in a number of different ways to the programmable terminal assembly to permit the electric motor to be operated in a number of different operating modes.
plurality of external electrical conductor and terminal assemblies are provided for use with the programmable terminal strip. A first embodiment of the externalconductor assembly includes an insulated external electrical conductor wire having a metallic wire terminal member secured thereto. The wire terminal member is adapted to be inserted into the pocket to provide an electrical connection therebetween. A second embodiment of the external electrical conductor and terminal assembly includes an insulated external electrical conductor wire having a first metallic wire terminal member secured thereto.
However, a jumper wire is also connected to the first wire terminal member, and a second wire terminal member is connected to the end of the jumper wire. The wire terminal members are adapted to be inserted into the pockets to provide electrical connections therebetween. The external electrical conductor and terminal assemblies can be connected in a number of different ways to the programmable terminal assembly to permit the electric motor to be operated in a number of different operating modes.
Description
- \
TIT~E
PROGRAMMABLE TERMINATION STRIP FOR ELECTRIC MOTOR
s BACKGROUND OF THE INVENTION
This invention relates in general to an interface structure for selectively connecting a plurality of intern~l electrical conductors contained within an electrical device to a plurality of external electrical conductors so as to facilitate use of the electrical device in a number of different operating modes. More specifically, this invention relates to a programmable tçrmin~l strip for a wound and terminated stator of an electric motor which connects a plurality of intern~l phase windings to a plurality external leads so as to facilitate use of the electric motor in a number of different operating modes.
Electric motors are well known electrical devices which convert electrical energy to rotary mechanical energy. To accomplish this, electric motors establish and control electromagnetic fields so as to cause the desired rotary mechanical motion. There are many different types of electric motors, each lltili7ing different means for establishing and controlling these electromagnetic fields. However, the two basic components of most conventional motors are (1) a stationary member which generates a rotating electromagnetic field, generally referred to as the stator, and (2) a rotatable member driven by the rotating magnetic field, generally referred to as the rotor.
In electric motors, as in many other diverse electrical devices, a plurality of internal electrical conductors are provided within the device which must be 2s connected to a plurality of external electrical conductors in order for the device to operate. In the context of electric motors, a plurality of internal electrical conductors is provided within the motor. The intern~l electrical conductors are typically embodied as a plurality of phase windings on the stator of the motor.
Similarly, a plurality of external electrical conductors is provided outside of the motor. The external electrical conductors are typically embodied as a plurality of leads connected to a source of electrical energy. To connect the internal electlical conductors to external electrical conductors and thereby permit 5 operation of the motor, an interface structure is usually provided. The interface structure connects the source of electrical energy to the phase windings of the motor to permit operation thereof.
In some electric motors, the interface structure is a fixed telminal board which provides a secure but unchangeable connection between the internal and o external electrical conductors. Although such fixed interface structures are relatively easy to manufacture and assemble, they suffer from the inability to change the connections between the interr al and external electrical conductors to permit the motor to be operated in different operating modes. As a result, a plurality of relatively similar motors must be manufactured and inventoried to 5 accommodate all of the different desired operating modes. This result is obviously uneconomical. To address this, it is also known in the art to provide a non-fixed telminal board connection between the intemal and external electrical conductors of a motor. Unfortunately, known terminal boards which are changeable have been found to be relatively difficult to change between 20 operating modes or relatively complicated or expensive. Accordingly, it wouldbe desirable to provide an improved shucture for a terminal board for an electric motor or other electrical device which permits the changing of operating modes easily and which is relatively simple and inexpensive in structure.
TIT~E
PROGRAMMABLE TERMINATION STRIP FOR ELECTRIC MOTOR
s BACKGROUND OF THE INVENTION
This invention relates in general to an interface structure for selectively connecting a plurality of intern~l electrical conductors contained within an electrical device to a plurality of external electrical conductors so as to facilitate use of the electrical device in a number of different operating modes. More specifically, this invention relates to a programmable tçrmin~l strip for a wound and terminated stator of an electric motor which connects a plurality of intern~l phase windings to a plurality external leads so as to facilitate use of the electric motor in a number of different operating modes.
Electric motors are well known electrical devices which convert electrical energy to rotary mechanical energy. To accomplish this, electric motors establish and control electromagnetic fields so as to cause the desired rotary mechanical motion. There are many different types of electric motors, each lltili7ing different means for establishing and controlling these electromagnetic fields. However, the two basic components of most conventional motors are (1) a stationary member which generates a rotating electromagnetic field, generally referred to as the stator, and (2) a rotatable member driven by the rotating magnetic field, generally referred to as the rotor.
In electric motors, as in many other diverse electrical devices, a plurality of internal electrical conductors are provided within the device which must be 2s connected to a plurality of external electrical conductors in order for the device to operate. In the context of electric motors, a plurality of internal electrical conductors is provided within the motor. The intern~l electrical conductors are typically embodied as a plurality of phase windings on the stator of the motor.
Similarly, a plurality of external electrical conductors is provided outside of the motor. The external electrical conductors are typically embodied as a plurality of leads connected to a source of electrical energy. To connect the internal electlical conductors to external electrical conductors and thereby permit 5 operation of the motor, an interface structure is usually provided. The interface structure connects the source of electrical energy to the phase windings of the motor to permit operation thereof.
In some electric motors, the interface structure is a fixed telminal board which provides a secure but unchangeable connection between the internal and o external electrical conductors. Although such fixed interface structures are relatively easy to manufacture and assemble, they suffer from the inability to change the connections between the interr al and external electrical conductors to permit the motor to be operated in different operating modes. As a result, a plurality of relatively similar motors must be manufactured and inventoried to 5 accommodate all of the different desired operating modes. This result is obviously uneconomical. To address this, it is also known in the art to provide a non-fixed telminal board connection between the intemal and external electrical conductors of a motor. Unfortunately, known terminal boards which are changeable have been found to be relatively difficult to change between 20 operating modes or relatively complicated or expensive. Accordingly, it wouldbe desirable to provide an improved shucture for a terminal board for an electric motor or other electrical device which permits the changing of operating modes easily and which is relatively simple and inexpensive in structure.
2~ SUMMARY OF THE INVENTION
This invention relates to an interface structure for selectively connecting a plurality of internal electrical conductors contained within an electrical device, such as the phase windings of an elechric motor, to a plurality of external electrical conductors, such as leads connected to a source of electrical energy, so as to facilitate use of the electrical device in a number of different operatingmodes. The interface structure includes a programmable terminal strip which connect the internal electrical conductors with a plurality of external electrical conductors. A plurality of pockets are formed on the progr~mm~ble tç~ ",i~
strip. Each of the pockets is provided to form a terminal for the programmable terminal strip. To accomplish this, one end of one of the internal electrical conductors is connected to a wire tçrmin~l member installed within the pocket soas to provide an electrical connection therebetween. A plurality of extern~l o electrical conductor and termin~l ~csçmblies are provided for use with the progr~mm~ble terminal strip. A first embodiment of the external conductor assembly includes an :~.sulated external electrical conductor wire having a metallic wire terminal member secured thereto. The wire termin~l member is adapted to be inserted into the pocket to provide an electrical connection therebetween. A second embodiment of the çxtçrn~l electrical conductor and terminal assembly includes an insulated external electrical conductor wire having a first metallic wire terminal member secured thereto. However, a jumper wire is also connected to the first wire terminal member, and a second wire terminal member is connected to the end of the jumper wire. The wire terminal members are adapted to be inserted into the pockets to provide electrical connections therebetween. The external electrical conductor and terminal assemblies can be connected in a number of different ways to the programmable tçrmin~l assembly to permit the electric motor to be operated in a number of different operating modes.
Various objects and advantages of this invention will become appalelll to those skilled in the art from the following detailed description of the preferred embodiment, when read in light of the accompal~ying drawings.
2178g91 BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a sectional elevational view of an electric motor including a progr~mm~ble terminal strip in accordance with this invention.
Fig. 2 is an exploded perspective view of the stator assembly and the 5 progr~rnm~ble termin~tion strip of the electric motor illustrated in Fig. 1.
Fig. 3 is an enlarged end elevational view of one of the end forms of the stator assembly illustrated in Figs. 1 and 2.
Fig. 4 is an enlarged perspective view of the programmable termination Stlip of the stator assembly illustrated in Figs. 1 and 2.
Fig. 5 is a further enlarged and exploded perspective view of a portion of the programmable termination strip, paltially broken away for clarity, showing apair of electrical terminals.
Fig. 6 is an elevational view of a first embodiment of an external electrical conductor and terminal assembly adapted for use with the progr~mm~ble telmin~l assembly.
Fig. 7 is an elevational view of a second embodiment of an external electrical conductor and terminal assembly adapted for use with the progr~mm~ble terminal assembly.
Figs. 8 through 13 are end elevational views of the stator assembly illustrating different connections which can be made with the external electrical conductors illustrated in Figs. 6 and 7 so as to operate the electric motor in aplurality of different operating modes.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings, there is illustrated in Fig. 1 a sectional elevational view of an electric motor, indicated generally at 10, in accordance with this invention. The illustrated electric motor 10 is a synchronous inductormotor, the basic structure and operation of which are well known in the art. For _ 5 2178991 example, U.S. Patent No. 4,406,958, owned by the assignee of this invention, discloses a synchronous inductor electric motor which can be operated as a stepping motor. The disclosure of that patent is incorporated herein by reference. Thus, only those portions of the electric motor 10 which are 5 necessary for a complete understanding of this invention will be described andillustrated. Although this invention will be described and illustrated in the context of the illustrated synchronous inductor electric motor 10, it will be appreciated that this invention may be used with other types of electric motors.The electric motor 10 includes a stator ~ssembly, indicated generally at 11 o in Fig. 2. The stator assembly 11 includes a hollow cylindrical shell 12 whichextends axially between a pair of opposed end bells 13 and 14. The end bells 13 and 14 are piloted on the opposed ends of the shell 12 so as to form a protective enclosure for the other components of the stator assembly 11. The stator assembly 11 further includes a hollow cylindrical stator 15 which is generally hollow and cylindrical in shape. The illustrated stator 15 is mounted within thestator shell 11 and has a plurality of radially inwardly extending poles lSa formed thereon. In the illustrated embodiment, the stator 15 is formed having eight of such stator poles lSa, although a greater or lesser number may be provided. The innermost end of each of the stator poles 15a has a plurality of 20 teeth 15b formed thereon. In the illustrated embodiment, each of the stator poles 15a is formed having five of such teeth 15b, although a greater or lesser numbermay be provided. The stator poles lSa may extend longit~l~in~lly throughout the length of the motor. As discussed above, the illustrated electric motor 10 is a synchronous inductor electric motor. Thus, the stator 15, the stator poles 15a, 2s and the stator teeth 15b are formed from a magnetically permeable m~teri~l A winding 16 of an electrical conductor is provided about each of the stator poles 15a. The windings 16 may be monofilar (i.e., composed of a single electrical conductor which is wound in a single direction about the stator pole 15a) or bifilar (i.e., composed of two electrical conductors which are wound in opposite directions about the stator pole 15a) as desired. Each of the win~ling~16 may be provided on the stator poles 15a independently of one another.
Alternatively, and more commonly, some of the windin~s 16 may be connected s together either in series or in parallel. In the illustrated embodiment, the windi~s 16 are bifilar, and the windings 16 on alternating ones of the stator poles 15a are cormected in series together. To accomplish this, a first internalelectrical conductor is provided within the stator 15 which is wound in a first direction about the first, third, fifth, and seventh stator poles 15a. A second o internal electrical conductor is provided within the stator 15 which is wound in a second direction (opposite to the first direction) about the first, third, fifth, and seventh stator poles 15a. Similarly, a third internal electrical conductor is provided within the stator 15 which is wound in the first direction about the second, fourth, sixth, and eighth stator poles l5a, and a fourth internal electrical conductor is provided within the stator 15 which is wound in the second direction about the second, fourth, sixth, and eighth stator poles 15a. In a manner which is well known in the alt, pulses of electrical current can be passed through each of the win~ling~ 16 so as to magnetize the stator poles 15a to possess either a magnetic north or a magnetic south polarization.
To facilitate the winding of the internal electrical conductors about the stator poles l5a to form the windings 16, a pair of end folms, indicated generally at 17 and 18, are provided adjacent to the axial ends of the stator 15. The structure of the end folm 17 is illustrated in detail in Fig. 3. The end form 17 is generally hollow and cylindrical in shape and is preferably formed from an electrically non-conductive matelial, such as molded plastic. The end form 17 has an outer flange 17a formed about the outer circumference thereof which extends axially away from the stator 15. The end form 17 further includes a plurality of radially inwardly extending legs 17b which corresponding in size, shape, and location to the stator poles l5a. Each of the legs 17b of the end forrn 17 termin~tes in an inner flange 17c which extends axially away from the stator 15. As best shown in Figs. 1 and 2, the outer flange 17a cooperates with each ofthe inner flanges 17c to define a winding cavity at the axial ends of the stator5 poles 15a. The end forrn 18 is formed in a similar manner. The winding cavities defined on the end forms 17 and 18 facilitate the winding of the internal electrical conductors about the stator poles 15a to form the windings 16.
As shown in Figs. 2 and 3, the end form 17 has a plurality of posts 17d formed thereon. In the illustrated embodiment, three cylindrical posts 17d are o formed on the end form 17 and extend axially away from the stator 15.
However, a greater or lesser number of posts 17d may be provided on the end form 17, and the posts 17d may be fonTIed in any desired shape. Similar posts need not be formed on the other end form 18. The purpose of these posts 17d will be explained below.
The electric motor 10 further includes a rotor assembly, indicated generally at 20 in Fig. 1. The illustrated rotor assembly 20 is generally cylindrical in shape, including a shaft 21 which is rotatably supported within the end bells 17 and 18 by respective bearings 22 and 23. A first pair of pole pieces 24 and 25 are mounted on the shaft 21 for rotation therewith. Each of the pole 20 pieces 24 and 25 has a plurality of teeth 24a and 25a (indicated by cross h~tching for clarity) formed thereon. As discussed above, the illustrated electric motor 10 is a synchronous inductor electric motor. Thus, the pole pieces 24 and 25, as well as their respective teeth 24a and 25a, are formed from a magnetically permeable material. The teeth 24a formed on the first pole piece 24 are aligned 25 with the valleys between the teeth 25a formed on the second pole piece 25.
A permanent magnet disc 26 is disposed between the pole pieces 24 and 25 and is mounted on the shaft 21 for rotation therewith. The permanent magnet disc 26 is provided to magnetize the pole pieces 24 and 25 to possess opposite magnetic polarizations. Similarly, a second pair of pole pieces 24' and 25' having a permanent magnet disc 26' disposed therebetween and a third pair of pole pieces 24" and 25" having a permanent m~gnet disc 26'' disposed therebetween are mounted on the shaft 21 for rotation therewith. In operation, the stator poles 15a are selectively polarized in a sequential manner by the windings 16 so as to create a rotating electromagnetic field which causes the perrnanently polarized teeth 24a and 25a of the rotor pole pieces 24 and 25 to be seq~lçnti~lly attracted to and repelled from the stator teeth 15b to cause rotation of the rotor assembly 20 relative to the stator assembly 15.
o As discussed above, the illustrated electric motor 10 is provided with four internal electrical conductors which form the windings 16. Each of the intern~l electrical conductors 16 has two ends. Thus, a total of eight connections must be made between the intemal electrical conductors and a source of electrical energy(not shown) in order for the electric motor 10 to operate. To accomplish this, aprogr~mm~ble termin~l strip, indicated generally at 30, is provided to cormect the internal electrical conductors with a plurality of external electrical conductors which, in tum, are connected to the source of electrical energy.
The structure of the programmable terminal strip 30 is best shown in Figs.
This invention relates to an interface structure for selectively connecting a plurality of internal electrical conductors contained within an electrical device, such as the phase windings of an elechric motor, to a plurality of external electrical conductors, such as leads connected to a source of electrical energy, so as to facilitate use of the electrical device in a number of different operatingmodes. The interface structure includes a programmable terminal strip which connect the internal electrical conductors with a plurality of external electrical conductors. A plurality of pockets are formed on the progr~mm~ble tç~ ",i~
strip. Each of the pockets is provided to form a terminal for the programmable terminal strip. To accomplish this, one end of one of the internal electrical conductors is connected to a wire tçrmin~l member installed within the pocket soas to provide an electrical connection therebetween. A plurality of extern~l o electrical conductor and termin~l ~csçmblies are provided for use with the progr~mm~ble terminal strip. A first embodiment of the external conductor assembly includes an :~.sulated external electrical conductor wire having a metallic wire terminal member secured thereto. The wire termin~l member is adapted to be inserted into the pocket to provide an electrical connection therebetween. A second embodiment of the çxtçrn~l electrical conductor and terminal assembly includes an insulated external electrical conductor wire having a first metallic wire terminal member secured thereto. However, a jumper wire is also connected to the first wire terminal member, and a second wire terminal member is connected to the end of the jumper wire. The wire terminal members are adapted to be inserted into the pockets to provide electrical connections therebetween. The external electrical conductor and terminal assemblies can be connected in a number of different ways to the programmable tçrmin~l assembly to permit the electric motor to be operated in a number of different operating modes.
Various objects and advantages of this invention will become appalelll to those skilled in the art from the following detailed description of the preferred embodiment, when read in light of the accompal~ying drawings.
2178g91 BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a sectional elevational view of an electric motor including a progr~mm~ble terminal strip in accordance with this invention.
Fig. 2 is an exploded perspective view of the stator assembly and the 5 progr~rnm~ble termin~tion strip of the electric motor illustrated in Fig. 1.
Fig. 3 is an enlarged end elevational view of one of the end forms of the stator assembly illustrated in Figs. 1 and 2.
Fig. 4 is an enlarged perspective view of the programmable termination Stlip of the stator assembly illustrated in Figs. 1 and 2.
Fig. 5 is a further enlarged and exploded perspective view of a portion of the programmable termination strip, paltially broken away for clarity, showing apair of electrical terminals.
Fig. 6 is an elevational view of a first embodiment of an external electrical conductor and terminal assembly adapted for use with the progr~mm~ble telmin~l assembly.
Fig. 7 is an elevational view of a second embodiment of an external electrical conductor and terminal assembly adapted for use with the progr~mm~ble terminal assembly.
Figs. 8 through 13 are end elevational views of the stator assembly illustrating different connections which can be made with the external electrical conductors illustrated in Figs. 6 and 7 so as to operate the electric motor in aplurality of different operating modes.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawings, there is illustrated in Fig. 1 a sectional elevational view of an electric motor, indicated generally at 10, in accordance with this invention. The illustrated electric motor 10 is a synchronous inductormotor, the basic structure and operation of which are well known in the art. For _ 5 2178991 example, U.S. Patent No. 4,406,958, owned by the assignee of this invention, discloses a synchronous inductor electric motor which can be operated as a stepping motor. The disclosure of that patent is incorporated herein by reference. Thus, only those portions of the electric motor 10 which are 5 necessary for a complete understanding of this invention will be described andillustrated. Although this invention will be described and illustrated in the context of the illustrated synchronous inductor electric motor 10, it will be appreciated that this invention may be used with other types of electric motors.The electric motor 10 includes a stator ~ssembly, indicated generally at 11 o in Fig. 2. The stator assembly 11 includes a hollow cylindrical shell 12 whichextends axially between a pair of opposed end bells 13 and 14. The end bells 13 and 14 are piloted on the opposed ends of the shell 12 so as to form a protective enclosure for the other components of the stator assembly 11. The stator assembly 11 further includes a hollow cylindrical stator 15 which is generally hollow and cylindrical in shape. The illustrated stator 15 is mounted within thestator shell 11 and has a plurality of radially inwardly extending poles lSa formed thereon. In the illustrated embodiment, the stator 15 is formed having eight of such stator poles lSa, although a greater or lesser number may be provided. The innermost end of each of the stator poles 15a has a plurality of 20 teeth 15b formed thereon. In the illustrated embodiment, each of the stator poles 15a is formed having five of such teeth 15b, although a greater or lesser numbermay be provided. The stator poles lSa may extend longit~l~in~lly throughout the length of the motor. As discussed above, the illustrated electric motor 10 is a synchronous inductor electric motor. Thus, the stator 15, the stator poles 15a, 2s and the stator teeth 15b are formed from a magnetically permeable m~teri~l A winding 16 of an electrical conductor is provided about each of the stator poles 15a. The windings 16 may be monofilar (i.e., composed of a single electrical conductor which is wound in a single direction about the stator pole 15a) or bifilar (i.e., composed of two electrical conductors which are wound in opposite directions about the stator pole 15a) as desired. Each of the win~ling~16 may be provided on the stator poles 15a independently of one another.
Alternatively, and more commonly, some of the windin~s 16 may be connected s together either in series or in parallel. In the illustrated embodiment, the windi~s 16 are bifilar, and the windings 16 on alternating ones of the stator poles 15a are cormected in series together. To accomplish this, a first internalelectrical conductor is provided within the stator 15 which is wound in a first direction about the first, third, fifth, and seventh stator poles 15a. A second o internal electrical conductor is provided within the stator 15 which is wound in a second direction (opposite to the first direction) about the first, third, fifth, and seventh stator poles 15a. Similarly, a third internal electrical conductor is provided within the stator 15 which is wound in the first direction about the second, fourth, sixth, and eighth stator poles l5a, and a fourth internal electrical conductor is provided within the stator 15 which is wound in the second direction about the second, fourth, sixth, and eighth stator poles 15a. In a manner which is well known in the alt, pulses of electrical current can be passed through each of the win~ling~ 16 so as to magnetize the stator poles 15a to possess either a magnetic north or a magnetic south polarization.
To facilitate the winding of the internal electrical conductors about the stator poles l5a to form the windings 16, a pair of end folms, indicated generally at 17 and 18, are provided adjacent to the axial ends of the stator 15. The structure of the end folm 17 is illustrated in detail in Fig. 3. The end form 17 is generally hollow and cylindrical in shape and is preferably formed from an electrically non-conductive matelial, such as molded plastic. The end form 17 has an outer flange 17a formed about the outer circumference thereof which extends axially away from the stator 15. The end form 17 further includes a plurality of radially inwardly extending legs 17b which corresponding in size, shape, and location to the stator poles l5a. Each of the legs 17b of the end forrn 17 termin~tes in an inner flange 17c which extends axially away from the stator 15. As best shown in Figs. 1 and 2, the outer flange 17a cooperates with each ofthe inner flanges 17c to define a winding cavity at the axial ends of the stator5 poles 15a. The end forrn 18 is formed in a similar manner. The winding cavities defined on the end forms 17 and 18 facilitate the winding of the internal electrical conductors about the stator poles 15a to form the windings 16.
As shown in Figs. 2 and 3, the end form 17 has a plurality of posts 17d formed thereon. In the illustrated embodiment, three cylindrical posts 17d are o formed on the end form 17 and extend axially away from the stator 15.
However, a greater or lesser number of posts 17d may be provided on the end form 17, and the posts 17d may be fonTIed in any desired shape. Similar posts need not be formed on the other end form 18. The purpose of these posts 17d will be explained below.
The electric motor 10 further includes a rotor assembly, indicated generally at 20 in Fig. 1. The illustrated rotor assembly 20 is generally cylindrical in shape, including a shaft 21 which is rotatably supported within the end bells 17 and 18 by respective bearings 22 and 23. A first pair of pole pieces 24 and 25 are mounted on the shaft 21 for rotation therewith. Each of the pole 20 pieces 24 and 25 has a plurality of teeth 24a and 25a (indicated by cross h~tching for clarity) formed thereon. As discussed above, the illustrated electric motor 10 is a synchronous inductor electric motor. Thus, the pole pieces 24 and 25, as well as their respective teeth 24a and 25a, are formed from a magnetically permeable material. The teeth 24a formed on the first pole piece 24 are aligned 25 with the valleys between the teeth 25a formed on the second pole piece 25.
A permanent magnet disc 26 is disposed between the pole pieces 24 and 25 and is mounted on the shaft 21 for rotation therewith. The permanent magnet disc 26 is provided to magnetize the pole pieces 24 and 25 to possess opposite magnetic polarizations. Similarly, a second pair of pole pieces 24' and 25' having a permanent magnet disc 26' disposed therebetween and a third pair of pole pieces 24" and 25" having a permanent m~gnet disc 26'' disposed therebetween are mounted on the shaft 21 for rotation therewith. In operation, the stator poles 15a are selectively polarized in a sequential manner by the windings 16 so as to create a rotating electromagnetic field which causes the perrnanently polarized teeth 24a and 25a of the rotor pole pieces 24 and 25 to be seq~lçnti~lly attracted to and repelled from the stator teeth 15b to cause rotation of the rotor assembly 20 relative to the stator assembly 15.
o As discussed above, the illustrated electric motor 10 is provided with four internal electrical conductors which form the windings 16. Each of the intern~l electrical conductors 16 has two ends. Thus, a total of eight connections must be made between the intemal electrical conductors and a source of electrical energy(not shown) in order for the electric motor 10 to operate. To accomplish this, aprogr~mm~ble termin~l strip, indicated generally at 30, is provided to cormect the internal electrical conductors with a plurality of external electrical conductors which, in tum, are connected to the source of electrical energy.
The structure of the programmable terminal strip 30 is best shown in Figs.
4 and 5. As shown therein, the progr~mm~ble termin~l strip 30 is generally flat and semi-cylindrical in shape and is preferably formed from an electrically non-conductive material, such as molded plastic. The programmable terminal strip 30 has a plurality of openings 31 folmed therethough. In the illustrated embodiment, three cylindrical openings 31 are folmed through the progr~mm~ble telminal strip 30. The openings 31 colTespond in size, shape, and location to the 2s posts 17d provided on the end form 17. Thus, the programmable tçrmin~l strip 30 can be installed on the end form 17 by moving the programmable terminal strip 30 axially toward the end form 17 such that the posts 17d are received within the openings 31. Preferably, the posts 17d engage the progr~mm~ble terminal strip 30 is a friction fit relationship to retain the programmable le~
strip 30 on the end form 17d and the rem~inll~r of the stator ~sembly 15.
Four enlarged portions 32 are formed on the progr~mm~ble tçrmin~l strip 30. As best sho~vn in Fig. 5, each of the enlarged portions 32 has a pair of s pockets, indicated generally at 33, formed therein. Each of the pockets 33 extends between an axially forward surface 34 and an axially rear vard surface 35. The axially forward surface 34 is slightly angled (preferably at an angle ofapproximately ten degrees) from a plane defined by the axially rearward surface 35 and the remainder of the progr~mm~ble t~rmin~l strip 30. The axially o forward surface 34 is angled so as to provide clearance between the shell 11 and external equipment (not shown) used to t~ormin~te the win(lings 16. A slot 34a is formed through the axially forward surface 34, and a slot 35a is formed through the axially rearward surface 35. Also, an upst~n~lin,~ support block 36 is fomled integrally within the pocket 33.
Each of the pockets 33 is provided to form a tçrmin~l for the progr~mm~ble t~ n~l strip 30. To accomplish this, one end of one of the internal electrical conductors, such as shown in dotted lines at 37 in Fig. 5, is pulled down through the slots 34a and 35a so as to extend axially through the pocket 33, above the support block 36. Then, a wire terrnin~l member 38 is 20 installed within the pocket 33 so as to engage the intemal electrical conductor 37 so as to provide an electrical connection therebetween. The wire tçrrnin~l member 38 may be embodied as any one of a nurnber of conventional metallic tennin~l components, such as a Mag-Mate~ brand poke-in tçrrnin~l m~n~lf~ctured by AMP Corporation. The illustrated wire t~rrnin~l member 38 is 2~ formed from a metallic material and has a V-shaped slot 38a forrned therein.
When the wire tçrrnin~l member 38 is pushed dowrlwardly within the pocket 33, the internal electrical conductor 37 is received within the V-shaped slot 38a.
However, the internal electrical conductor 37 is supported on the support block - lo 2178991 36, thereby preventing it from bending downwardly within pocket 33 as the wire tçrmin~l member 38 is installed. The edges of the V-shaped slot 38a are sharpened so as to slice through any electrical inc~ tion provided on the int~rn~l electrical conductor 37, thereby assuring a good electrical contact between the s con~ ctor 37 and the wire terrnin~l member 37. Any portion of the internal electrical conductor 37 which extçn~ls forwardly from the axially forward surface 34 can be trirnmed off. The rçm~inin~ seven ends of the four int~rn~l - electrical conductors of the stator assembly 15 can be secured to the pro~~ ,able t~ l strip 30 in the same manner. Thus, it can be seen that o the eight ends of the four internal electrical conductors of the stator assembly 15 are permanently terminated in the eight pockets 33 of the programmaWe termin~l strip 30.
Referring now to Fig. 6, there is illustrated a first embodiment of an ex~çrn~l electrical conductor and tçrmin~l assembly, indicated generally at 40, 1S which is adapted for use with the above-described programmable terminal strip30. The eYtern~l conductor assembly 40 includes an innll~ted external electricalconductor wire 41 having a metallic wire terminal member 42 secured thereto.
The wire terminal member 42 may be embodied as any one of a number of conventional metallic terminal components, such as a Mag-Matet~ brand poke-in 20 termin~l m~nllf?lctured by AMP Corporation which is complementary to the wireterminal member 37 discussed above. The wire 42 is connected to a source of electrical energy (not shown) in any known manner.
Referring now to Fig. 7, there is illustrated a second embodiment of an external electrical conductor and terminal assembly, indicated generally at 50, 25 which is also adapted for use with the above-described programmable terminal strip 30. The çxtern~l conductor assembly 50 includes an insulated external electrical conductor wire 51 having a first metallic wire terminal member 52 secured thereto, similar to the external conductor ~csernbly 40. However, a _ 11 2178991 jumper portion 53 is also connected to the first wire termin~l member 52. The jumper portion 53 termin~tes in a second wire tennin~l member 54. The wire 52 is also connected to the source of electrical energy in any known m~nnçr.
Referring now to Fig. 8, there is illustrated an end elevational view of the 5 stator ~ssembly 11 showing the electric motor 10 connected for operation in a first operating mode. As shown therein, one of the first extern~l conductor assemblies 40 illustrated in Fig. 6 is inserted within each of the eight pockets 33 so as to be electrically connected to the respective wire termin~l members 38 disposed therein. As a result, the internal electrical conductors 37 are o individually electrically connected to the çxtçrn~l electrical conductors 42. This configuration is suited for using the electric motor 10 in a standard eight leadoperating mode.
Fig. 9 illustrates illustrated an end elevational view of the stator assembly 1 showing the electric motor 10 connected for operation in a second operating S mode. As shown therein, one of the first çxtçrn~l conductor assemblies 40 illustrated in Fig. 6 is inserted with four of the eight pockets 33 so as to be electrical connected to the respective wire t~nnin~l members 38 disposed therein.
As a result, four of the int~rn~l electrical conductors 37 are individually electrically connected to four of the extern~l electrical conductors 42 (identified 20 as terminals 1, 3, 6, and 8). Additionally, one of the second external conductor assemblies 50 illustrated in Fig. 7 is inserted within two of the eight pockets 33 so as to be electrically connected to the respective wire terminal members 38 disposed therein (identified as terminals 2 and 7). The jumper portions 53 associated with the second external conductor assemblies 50 are inserted within 25 the ren~ininp two of the eight pockets 33 so as to be electrically connected to the respective wire tenninal members 38 disposed therein (identified as tçrrnin~l~
4 and 5). As a result, the internal electrical conductors 37 connected to terminals 2 and 5 are individually electrically connected to one of the extemal electrical -~~ 12 21789gl conductors 42, and the internal electrical conductors 37 connected to terminals 4 and 7 are individually electrically connected to one of the external electrical conductors 42. This configuration is suited for using the electric motor 10 in astandard six lead operating mode.
Figs. 10 through 13 show the electric motor 10 connected for operation in other operating modes. Fig. 10 illustrates a confi~uration which is suited for using the electric motor 10 in a standard four lead monofilar operating mode.
Also, which respect to the Fj(T. 10 configuration, if the first and second te~nin~ls are connected together by a conventional jumper wire (not shown), the electric o motor 10 can be used in a standard three lead configuration. Fig 11 illustrates a configuration which is suited for using the electric motor 10 in a four lead parallel termination operating mode. Fig. 12 illustrates a configuration which is suited for using the electric motor 10 in a four lead series termination operating mode. Lastly, Fig. 13 illustrates a configuration which is suited for using the electric motor 10 in a standard five lead operating mode. In Figs. 12 and 13, conventional jumper wires 60 are provided between some of the terminals.
In accordance with the provisions of the patent statutes, the principle and mode of operation of this invention have been explained and illustrated in its preferred embodiment. However, it must be understood that this invention may be practiced otherwise than as specif cally explained and illustrated without departing from its spirit or scope.
strip 30 on the end form 17d and the rem~inll~r of the stator ~sembly 15.
Four enlarged portions 32 are formed on the progr~mm~ble tçrmin~l strip 30. As best sho~vn in Fig. 5, each of the enlarged portions 32 has a pair of s pockets, indicated generally at 33, formed therein. Each of the pockets 33 extends between an axially forward surface 34 and an axially rear vard surface 35. The axially forward surface 34 is slightly angled (preferably at an angle ofapproximately ten degrees) from a plane defined by the axially rearward surface 35 and the remainder of the progr~mm~ble t~rmin~l strip 30. The axially o forward surface 34 is angled so as to provide clearance between the shell 11 and external equipment (not shown) used to t~ormin~te the win(lings 16. A slot 34a is formed through the axially forward surface 34, and a slot 35a is formed through the axially rearward surface 35. Also, an upst~n~lin,~ support block 36 is fomled integrally within the pocket 33.
Each of the pockets 33 is provided to form a tçrmin~l for the progr~mm~ble t~ n~l strip 30. To accomplish this, one end of one of the internal electrical conductors, such as shown in dotted lines at 37 in Fig. 5, is pulled down through the slots 34a and 35a so as to extend axially through the pocket 33, above the support block 36. Then, a wire terrnin~l member 38 is 20 installed within the pocket 33 so as to engage the intemal electrical conductor 37 so as to provide an electrical connection therebetween. The wire tçrrnin~l member 38 may be embodied as any one of a nurnber of conventional metallic tennin~l components, such as a Mag-Mate~ brand poke-in tçrrnin~l m~n~lf~ctured by AMP Corporation. The illustrated wire t~rrnin~l member 38 is 2~ formed from a metallic material and has a V-shaped slot 38a forrned therein.
When the wire tçrrnin~l member 38 is pushed dowrlwardly within the pocket 33, the internal electrical conductor 37 is received within the V-shaped slot 38a.
However, the internal electrical conductor 37 is supported on the support block - lo 2178991 36, thereby preventing it from bending downwardly within pocket 33 as the wire tçrmin~l member 38 is installed. The edges of the V-shaped slot 38a are sharpened so as to slice through any electrical inc~ tion provided on the int~rn~l electrical conductor 37, thereby assuring a good electrical contact between the s con~ ctor 37 and the wire terrnin~l member 37. Any portion of the internal electrical conductor 37 which extçn~ls forwardly from the axially forward surface 34 can be trirnmed off. The rçm~inin~ seven ends of the four int~rn~l - electrical conductors of the stator assembly 15 can be secured to the pro~~ ,able t~ l strip 30 in the same manner. Thus, it can be seen that o the eight ends of the four internal electrical conductors of the stator assembly 15 are permanently terminated in the eight pockets 33 of the programmaWe termin~l strip 30.
Referring now to Fig. 6, there is illustrated a first embodiment of an ex~çrn~l electrical conductor and tçrmin~l assembly, indicated generally at 40, 1S which is adapted for use with the above-described programmable terminal strip30. The eYtern~l conductor assembly 40 includes an innll~ted external electricalconductor wire 41 having a metallic wire terminal member 42 secured thereto.
The wire terminal member 42 may be embodied as any one of a number of conventional metallic terminal components, such as a Mag-Matet~ brand poke-in 20 termin~l m~nllf?lctured by AMP Corporation which is complementary to the wireterminal member 37 discussed above. The wire 42 is connected to a source of electrical energy (not shown) in any known manner.
Referring now to Fig. 7, there is illustrated a second embodiment of an external electrical conductor and terminal assembly, indicated generally at 50, 25 which is also adapted for use with the above-described programmable terminal strip 30. The çxtern~l conductor assembly 50 includes an insulated external electrical conductor wire 51 having a first metallic wire terminal member 52 secured thereto, similar to the external conductor ~csernbly 40. However, a _ 11 2178991 jumper portion 53 is also connected to the first wire termin~l member 52. The jumper portion 53 termin~tes in a second wire tennin~l member 54. The wire 52 is also connected to the source of electrical energy in any known m~nnçr.
Referring now to Fig. 8, there is illustrated an end elevational view of the 5 stator ~ssembly 11 showing the electric motor 10 connected for operation in a first operating mode. As shown therein, one of the first extern~l conductor assemblies 40 illustrated in Fig. 6 is inserted within each of the eight pockets 33 so as to be electrically connected to the respective wire termin~l members 38 disposed therein. As a result, the internal electrical conductors 37 are o individually electrically connected to the çxtçrn~l electrical conductors 42. This configuration is suited for using the electric motor 10 in a standard eight leadoperating mode.
Fig. 9 illustrates illustrated an end elevational view of the stator assembly 1 showing the electric motor 10 connected for operation in a second operating S mode. As shown therein, one of the first çxtçrn~l conductor assemblies 40 illustrated in Fig. 6 is inserted with four of the eight pockets 33 so as to be electrical connected to the respective wire t~nnin~l members 38 disposed therein.
As a result, four of the int~rn~l electrical conductors 37 are individually electrically connected to four of the extern~l electrical conductors 42 (identified 20 as terminals 1, 3, 6, and 8). Additionally, one of the second external conductor assemblies 50 illustrated in Fig. 7 is inserted within two of the eight pockets 33 so as to be electrically connected to the respective wire terminal members 38 disposed therein (identified as terminals 2 and 7). The jumper portions 53 associated with the second external conductor assemblies 50 are inserted within 25 the ren~ininp two of the eight pockets 33 so as to be electrically connected to the respective wire tenninal members 38 disposed therein (identified as tçrrnin~l~
4 and 5). As a result, the internal electrical conductors 37 connected to terminals 2 and 5 are individually electrically connected to one of the extemal electrical -~~ 12 21789gl conductors 42, and the internal electrical conductors 37 connected to terminals 4 and 7 are individually electrically connected to one of the external electrical conductors 42. This configuration is suited for using the electric motor 10 in astandard six lead operating mode.
Figs. 10 through 13 show the electric motor 10 connected for operation in other operating modes. Fig. 10 illustrates a confi~uration which is suited for using the electric motor 10 in a standard four lead monofilar operating mode.
Also, which respect to the Fj(T. 10 configuration, if the first and second te~nin~ls are connected together by a conventional jumper wire (not shown), the electric o motor 10 can be used in a standard three lead configuration. Fig 11 illustrates a configuration which is suited for using the electric motor 10 in a four lead parallel termination operating mode. Fig. 12 illustrates a configuration which is suited for using the electric motor 10 in a four lead series termination operating mode. Lastly, Fig. 13 illustrates a configuration which is suited for using the electric motor 10 in a standard five lead operating mode. In Figs. 12 and 13, conventional jumper wires 60 are provided between some of the terminals.
In accordance with the provisions of the patent statutes, the principle and mode of operation of this invention have been explained and illustrated in its preferred embodiment. However, it must be understood that this invention may be practiced otherwise than as specif cally explained and illustrated without departing from its spirit or scope.
Claims
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A programmable terminal strip for an electrical device including an internal electrical conductor comprising:
a body having an enlarged portion formed thereon;
a pocket formed in said enlarged portion; and a wire terminal member disposed within the pocket and adapted to be connected to the internal electrical conductor.
a body having an enlarged portion formed thereon;
a pocket formed in said enlarged portion; and a wire terminal member disposed within the pocket and adapted to be connected to the internal electrical conductor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/506,907 | 1995-07-26 | ||
| US08/506,907 US6106324A (en) | 1995-07-26 | 1995-07-26 | Programmable termination strip for electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2178991A1 true CA2178991A1 (en) | 1997-01-27 |
Family
ID=24016421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002178991A Abandoned CA2178991A1 (en) | 1995-07-26 | 1996-06-14 | Programmable termination strip for electric motor |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6106324A (en) |
| EP (1) | EP0756369B1 (en) |
| CA (1) | CA2178991A1 (en) |
| DE (1) | DE69608366T2 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6555937B2 (en) * | 2000-02-01 | 2003-04-29 | Denso Corporation | Vehicle alternator rectifier having L-shaped connection terminals |
| DE10208367A1 (en) * | 2002-02-27 | 2003-09-04 | Bsh Bosch Siemens Hausgeraete | electric motor |
| US20040061390A1 (en) * | 2002-10-01 | 2004-04-01 | Baker-Bachman Shawn Lawrence | Apparatus and method for connecting parallel stator windings |
| DE10347483A1 (en) * | 2003-09-30 | 2005-05-12 | Bosch Gmbh Robert | Electric machine |
| US7605505B2 (en) * | 2005-05-18 | 2009-10-20 | Honeywell International Inc. | Rotating electric machine rotor pole crossover |
| US7508103B2 (en) * | 2006-01-31 | 2009-03-24 | A.O. Smith Corporation | Electric machine having a tilted voltage adjustment |
| JP4353950B2 (en) * | 2006-03-06 | 2009-10-28 | 三菱電機株式会社 | Rotating electric machine |
| US7518274B1 (en) | 2006-06-12 | 2009-04-14 | Mancl Dennis J | Motor bracket with integral terminals |
| US7898131B2 (en) * | 2008-07-07 | 2011-03-01 | A.O. Smith Corporation | External voltage change device |
| US7931473B2 (en) * | 2008-10-17 | 2011-04-26 | Crane Pumps & Systems, Inc. | Multi-voltage pump with discreet voltage cords |
| US8716910B2 (en) * | 2011-01-21 | 2014-05-06 | Remy Technologies Llc | Stator winding connection arrangement |
| JP2014110673A (en) * | 2012-11-30 | 2014-06-12 | Sanyo Denki Co Ltd | Power line connection structure of stator |
| JP5829240B2 (en) * | 2013-07-31 | 2015-12-09 | ファナック株式会社 | Motor with terminal block |
| WO2017195481A1 (en) * | 2016-05-11 | 2017-11-16 | 日立オートモティブシステムズ株式会社 | Dynamo-electric machine |
| DE102018102976A1 (en) * | 2018-02-09 | 2019-08-14 | Nidec Corp. | wire holder |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3979615A (en) * | 1975-02-05 | 1976-09-07 | Amp Incorporated | Field assembly for electric motors |
| US4038573A (en) * | 1975-04-21 | 1977-07-26 | General Signal Corporation | Coil terminating means |
| US4132460A (en) * | 1977-11-07 | 1979-01-02 | Amp Incorporated | Electrical connections to coil windings |
| US4181393A (en) * | 1978-03-17 | 1980-01-01 | Amp Incorporated | Interconnecting means for coil windings and overload protector |
| US4481435A (en) * | 1981-01-30 | 1984-11-06 | Electrolux Corporation | Field coil terminal connector for stator assemblies |
| US4406958A (en) | 1981-04-06 | 1983-09-27 | The Superior Electric Company | Stepping motors with disc magnet |
| US4642885A (en) * | 1984-02-15 | 1987-02-17 | General Electric Company | Method of assembling a stator |
| DE3407758A1 (en) * | 1984-03-02 | 1985-09-12 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | AUTOMATIC-BASED COIL BODY FOR ELECTRICAL DEVICES |
| DE3447826C2 (en) * | 1984-12-29 | 1994-12-01 | Mulfingen Elektrobau Ebm | Electric external rotor motor |
| US4689023A (en) * | 1985-08-27 | 1987-08-25 | The Superior Electric Company | Programmable electrical connector |
| US4656378A (en) * | 1985-11-12 | 1987-04-07 | Amp Incorporated | Motor stator and connector for making connections to stator windings |
| US4880391A (en) * | 1988-06-30 | 1989-11-14 | General Electric Company | Apparatus for connecting multiple windings |
| US4937482A (en) * | 1989-06-02 | 1990-06-26 | Emerson Electric Co. | Voltage and rotation switching device |
| US5015894A (en) * | 1990-02-13 | 1991-05-14 | Emerson Electric Co. | Unit bearing leadless motor |
| US5175458A (en) * | 1991-09-04 | 1992-12-29 | Onan Corporation | Insulator for terminating electrodynamic stator coils |
| JP2607197Y2 (en) * | 1992-05-22 | 2001-04-16 | 株式会社マキタ | Power tool motor stator |
| US5465016A (en) * | 1993-09-08 | 1995-11-07 | Electrolux Corporation | Electric motor and brush/shunt assembly therefor |
-
1995
- 1995-07-26 US US08/506,907 patent/US6106324A/en not_active Expired - Fee Related
-
1996
- 1996-06-14 CA CA002178991A patent/CA2178991A1/en not_active Abandoned
- 1996-07-24 DE DE69608366T patent/DE69608366T2/en not_active Expired - Fee Related
- 1996-07-24 EP EP96305439A patent/EP0756369B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US6106324A (en) | 2000-08-22 |
| EP0756369B1 (en) | 2000-05-17 |
| EP0756369A1 (en) | 1997-01-29 |
| DE69608366D1 (en) | 2000-06-21 |
| DE69608366T2 (en) | 2000-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |
Effective date: 19990614 |