US3895764A - Dental retracting device - Google Patents
Dental retracting device Download PDFInfo
- Publication number
- US3895764A US3895764A US429887A US42988774A US3895764A US 3895764 A US3895764 A US 3895764A US 429887 A US429887 A US 429887A US 42988774 A US42988774 A US 42988774A US 3895764 A US3895764 A US 3895764A
- Authority
- US
- United States
- Prior art keywords
- hose
- reel
- collecting
- support member
- collecting reel
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
- A61G15/14—Dental work stands; Accessories therefor
- A61G15/16—Storage, holding or carrying means for dental handpieces or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/33—Hollow or hose-like material
Definitions
- the device herein described is designed to deliver and retrieve hollow, tubular members and especially a [111 3,895,764 July 22, 1975 multichanneled hose that is operably connected to equipment regularly used by dentists in the performance of dental services.
- the delivery and retrieving device includes a base support member and a hose collecting reel rotatably mounted to a vertical shaft perpendicularly mounted to the base support member.
- the hose collecting reel consists of an upper and lower disk plate in which one of the disk plates contains a cut-out, spiraled raceway. The disk plates are separated or maintained in a spaced apart relationship by' a discontinuous separating ring.
- Rotation of the collecting reel is accomplished by a clock spring carried within a housing of a ball detent locking mechanism positioned beneath the lower disk plate.
- a hose separating pin operably connected to an electrical switch, is mounted to the base support member in a fashion such that one end thereof is capable of riding in the cut-out, spiraled raceway during rotation of the collecting reel.
- the separating pin maintains a spaced separation between the spirally collected hose preventing the hose from crimping and thereby hampering the retrieving action.
- a smooth delivery of any desired length of tubing is achieved by a centrifugal type of ball-detent locking mechanism wherein the housing of the locking ball is positioned on an angle of about 15 above a plane horizontal to the locking detents.
- US. Pat. No. 3,131,883 attempted to resolve this problem by employing a hose collecting member adapted with a series of rollers positioned about the collecting members outer peripheral edge.
- the above device is designed such that in use the hose must make a sharp, 180 turn about the rollers during the winding and unwinding process. If the hose has a relatively thin wall or a small internal diameter, the 180 bend can hamper delivery of fluids therethrough.
- Anotherproblem associated with delivery and retrievingdevices employing collecting reels is that if the collected tubular member is formed'of a material having a high coefficient of friction such as rubber or any of the synthetic polymeric materials having a soft or pliable texture, it is virtually impossible to roll a double thickness of the tubing on the reel without encountering crimping, pinching or a braking action.
- Other devices have attempted to remedy this problem by eliminating collecting reels and using an elongated collecting system for retrieving the tubular members.
- neither of these systems have managed to successfully handle tubing lengths of about 40 inches without employing disks of about inches in diameter or elongated housing of 18 or 20 inches in length. In most instances such systems cannot be conveniently coordimated with the compact consoles now being offered to and used by the dental profession.
- an object of this invention to provide a device capable of supplying and retrieving tubular members on command with a minimum of inconvenience. Another object is to provide a device capable of collecting more than one layer of tubing without crimping or causing a braking action. Still another object is to provide a compact system for supplying and retrieving rubber-like tubular members in a reliable and efficient manner. Still another object is to provide a reel t-ypehose collecting system capable of separating the tubular members during collection thereof. Still another object of this invention is to provide a device capable of supplying and retrieving tubular members without adversely affecting the tubular members flowthrough capabilities. Another object is to provide a compact reel type hose collecting device capable of delivering on command various lengths of tubing efficiently and with a minimum amount of frictional drag.
- the device of this invention which includes a pair of disk plates, rotatably mounted to a support member, in which one of the disk plates includes a cut-out, spiraled raceway.
- The" disk plates are separated by a discontinuous separating ring vention is that the separating pin is electrically or mechanically connected to a lever arm capable of actuating one or more on-off switches.
- the retrieval means which normally comprises a clock spring, the disks are caused to rotate, collecting the tubular members in the external collecting zone while maintaining a separation in between the tubular members carried within the internal collecting zone.
- the device includes a centrifugal type of ball-detent locking mechanism wherein the housing of the free rolling locking ball is positioned on a slight incline above a plane horizontal to a circular base plate containing a number of locking detents along its peripheral edge.
- the centrifugal release and/or gravitational engagement of the locking ball with the detents provides a convenient means for efficiently supplying and retrieving any desired length of tubing on command.
- FIG. 1 is a top perspective view of the device of this invention.
- FIG. 2 is a cross-section view of the device along line 2--2 of FIG. 1.
- FIG. 3 is a cross-section view of the device along line 3-3 of FIG. 1.
- FIG. 4 is an exploded view of the device shown in FIG. 1.
- the dental hose delivering and retracting device of this invention includes a base support member 2 and a hose collecting reel 4 rotatably mounted thereto via shaft 42 for receiving and collecting a multichanneled service hose 7.
- the collecting reel 4 comprises a bottom disk plate 5 equidistantly spaced from an upper disk plate 6 by a discontinuous separating ring 22.
- the upper disk plate 6 contains a cut-out, spiraled raceway 30 for receiving a separating pin 14.
- One end of the channeled service hose 7 is adapted for connectiongto anair, fluid, electrical and- /or suction source (not shown).
- the other end of the hose 9 is connected to an adaptor 10 for connection to dental tools and/or equipment.
- the adapter is preceded by'a sleeve 9 whichencases the dental hose and shields the hose from possible damage when the hose is fully retracted and held within the apertured support member 12.
- the adapterx is prevented from entering the opening in the apertured support member 12 by an annular stop member 11.
- a section of the hose, intermediate its two ends, passes through an opening in a reel head 8 which is removably fixed to the upper end of shaft 42.
- the dental hose shown is divided into three or more channels or compartments 7a, 7b. and 7c respectively. Each compartment or channel is connected to a source of water, pressurized air, 7 exhaust air or electrical power, as may be required, depending on the particular dental service to be perl for med (FIG. 3
- Thehose separating pin 14 which rides in the spiraled raceway is perpendicularly connected to a lever arm 16 "which in turn is attached for pivotal rotation to a vertihose collecting compartment.
- This feature prevents frictional contact of the hoses side wall and thus eliminates hose crimping and buckling and all braking actions which would be incident thereto.
- a certain degree of hose lateral movement is required. To insure that suitable lateral movement is available, the diameter of the inner hose compartment will be greater than the distance between the outer edges of the coiled hose (FIG. 2). Generally this difference d will be about the thickness of the hose collected within the inner hose compartment.
- the hose separating ring is discontinuous or broken and thus facilitates the passage of the hose from the inner hose collecting compartment to the outer hose collecting compartment.
- that portion of the hose collected in the outer compartment is that portion of the hose which is extended and retracted during use.
- the hose retained within the inner compartment as indicated above, merely moves laterally or in a fluid expanding manner within the inner compartment through action of the base separating pin 14.
- the upper disk plate 6 has a central aperture 37 of sufficient size for circumscribing the reel head 8.
- the lower disk 5 also contains a central aperture 38 through which a collar 56 and central shaft 40 pass.
- the upper end 42 of the shaft 40 is locked in a vise type opening 44 bored in the reel head by means of a locking bolt 46.
- the lower end of the shaft has a ledge 47 and an internally threaded opening 48.
- the shaft is held to the base support member 2 by a threadedbolt 50 which is separated on the bottom side'by a washer 52 and on the upper side by a notched or detented base plate 96 and a washer 98.
- a spring housing 54 is provided having a collar 56 which overrides the central portion 40 of the shaft 42. Each end of the collar has a seat 58 and 60 for receiving a ball bearing ring 62 and 64 respectively.
- the spring housing is mounted to the bottom disk plate 5 through bolts 66 and 68 passing through openings 70 and 72 of the disk plates which are in alignment with threaded openings 74 and 76 of the housing.
- the collar passes through the annular openings of the 'upper and lower disk plates 5 and 6 and is held flush to the reel head 8 by means of the shaft 42 and the vise type opening 44.
- a clock spring 80 is housed within the spring housing with the internal end 81 of the spring being held to that portion of the shaft 42 justabove ledge 47.
- a ball housing 84 is mounted along the sidewalls 82 of the spring housing 54 by bolts 86 and 88.
- the ball housing contains an angled or slanted opening 90 bored through the ball housing. The opening is bored radially downward toward the shaft 42 at an angle of less than 25 and normally at an angle of between 10 and 20. More preferably, the slanted bore is at an angle of about 15 to a plane horizontal to the base support member.
- the housing encloses a locking ball 92 which is retained within the housing by an outer cover plate 94.
- the inner portion of the slanted bore opening is obstructed or closed by a circumferentially notched base plate 96, the notches of which come into registry with the locking ball as the shaft is rotated during the winding and unwinding action of the collecting reel.
- the ball is retained in the housing and out of the detents by centrifugal force created by rotation of the shaft and the notched base plate.
- the ball gravitationally rolls down the 15 slanted bore and falls into one of the detents or notches, causing the shaft to be locked in position.
- the number of locking positions available is determined by the number of notches on the plate or by the number of locking balls and angled bored openings available for registry with one of the notches.
- one ball may be used with a notched base plate containing from 6 to 9 notches. This type of arrangement will permit locking to occur every 40 to 60 .of rotation. If a greater number of stop positions are desired, the number of notches in the base plate may be increased or additional locking balls and ball housings may be used.
- the hose collecting reel is normally in the retracted position as shown in FIG. 1.
- the reel and the spring housing is rotated, causing the clock spring to tighten.
- the pulling motion is stopped and the reel, through action of the spring, is rotated slightly backward as in rewinding, causing the locking ball and the notches to register and thereby causethe disk to lock in the extended position.
- the hose is to be retracted, the hose is pulled outward, taking the ball out of registry and forcing it into the housing where it is retained by centrifugal force during rotation of the hose 7 collecting reel.
- This feature facilitates the retrieval process and permits for a more reliable and simplified supply and retrieval operation.
- the separating pin rides within the cut-out, spiraled raceway of the upper disk plate.
- the separating pin maintains a separation of the tubular members within the inner compartment of the hose collecting reel.
- the outer compartment is designed to collect the hose which is retracted or released during the winding and unwinding action.
- the hose within the inner compartment is never extended beyond the inner compartment of the reel but is continually moving laterally or expanding during the winding and rewinding process by action of the separating pin. It is this lateral or expandable action which prevents the tubular members from crimping and/or causing a braking action during the winding and rewinding process.
- the tubing is preferably fixed to the separating ring by means of any type of connecting means, such as by a bolt or screw 95.
- any type of connecting means such as by a bolt or screw 95.
- the separating pin is connected to a lever arm which in turn is rotatably mounted to a vertical post held by the base support member 2.
- an electronic or mechanical switching means 100 diagramatically shown in FIG. 1 is positioned such that on movement of the pin or arm within the spiraled raceway, the switch can be automatically actuated when the pin reaches a certain preselected point in the raceway. The switch can then actuate ancillary power equipment, pressurized tubes or suction apparatus, etc. which may be connected to the multichanneled tubular hose.
- a device for supplying and retrieving a hose like member comprising:
- a base support member a hose collecting reel rotatably mounted to said support member, and a hose separating means, said hose collecting reel having an upper and lower disk plate and a spiraled cutout raceway in one of said disk plates for receiving said hose separating means and thereby maintaining a separation between the coils of said hose like member as said member is coiled or uncoiled on said collecting reel.
- the device of claim 1 including a reel locking means for locking said hose collecting reel in a fixed position.
- the device of claim 2 including a lever arm fixed at one of its ends to said hose separating means and at the other end fixed for rotation to said support member.
- the device of claim 5 including a shaft connected at one end to said spring loaded reel and at the other end to a shaft head.
- the device of claim 8 including a dental tool adapter mounted to the other end of said hose member.
- said locking means includes a locking ball housed within a lock ball housing and a stationary detented plate about which said ball housing rotates.
- a method for winding a tubular member about a tube collecting reel rotatably mounted to a base member comprising:
- a method for retrieving a tubing about a tube collecting reel having an outer tube collecting compartment and an inner tube collecting compartment containing a section of coiled tubing comprising:
- reel locking means comprising a stationary base plate having notches along its edge, a lock ball housing mounted for rotation about said base plate, a lock ball contained within said housing, a path for said lock ball leading from said lock ball housing to said notches, said path being inclined at an angle of less than 25 above said base plate.
Abstract
Description
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US429887A US3895764A (en) | 1974-01-02 | 1974-01-02 | Dental retracting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US429887A US3895764A (en) | 1974-01-02 | 1974-01-02 | Dental retracting device |
Publications (1)
Publication Number | Publication Date |
---|---|
US3895764A true US3895764A (en) | 1975-07-22 |
Family
ID=23705126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US429887A Expired - Lifetime US3895764A (en) | 1974-01-02 | 1974-01-02 | Dental retracting device |
Country Status (1)
Country | Link |
---|---|
US (1) | US3895764A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4146191A (en) * | 1976-08-13 | 1979-03-27 | Industrial Safety Devices, Inc. | Microphone retriever |
US4384688A (en) * | 1981-05-26 | 1983-05-24 | Warren F. B. Lindsley | Self-storing cord and hose reel assemblies |
WO1990002901A2 (en) * | 1988-09-01 | 1990-03-22 | Houben Kunststofftechnik Gmbh | Pressure hose with matching hose drum and matching coupling piece |
US5893528A (en) * | 1997-02-12 | 1999-04-13 | Pabban Development, Inc. | Tubing retracting system |
US6484959B1 (en) | 2001-06-22 | 2002-11-26 | Derik Grammenz | Dental tubing and cable retraction apparatus |
US6516892B2 (en) * | 2001-06-26 | 2003-02-11 | Phillips Petroleum Company | Method and apparatus for coiled tubing operations |
US6726140B2 (en) * | 2001-01-05 | 2004-04-27 | Westinghouse Electric Company Llc | Take-up reel for flexible elongated members |
US20080054116A1 (en) * | 2006-09-05 | 2008-03-06 | Louis A. Kish | Rewind mechanism |
WO2011009456A3 (en) * | 2009-07-20 | 2011-10-13 | Roberto Pintore | Cable drums for mobile television production units |
CN104192646A (en) * | 2014-06-20 | 2014-12-10 | 蔡玲霄 | Handle wire take-up device of crane |
US20150308425A1 (en) * | 2014-04-29 | 2015-10-29 | The Chamberlain Group, Inc. | Power Air Compressor |
US20170071811A1 (en) * | 2015-03-06 | 2017-03-16 | Sargon Lazarof | Dental chair |
US10359251B2 (en) * | 2017-09-20 | 2019-07-23 | Birchwood Casey, LLC | Retractable gun bore cleaning system |
US20200306007A1 (en) * | 2017-03-11 | 2020-10-01 | Xudong Wang | Pump Structure of Portable Oral Irrigator and Portable Oral Irrigator Comprising Same |
WO2021014190A1 (en) * | 2019-07-22 | 2021-01-28 | Fiac S.R.L. | Air compression unit |
US10935013B2 (en) | 2018-01-25 | 2021-03-02 | Fiac.S.R.L. | Air compressor unit |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1794825A (en) * | 1925-12-17 | 1931-03-03 | Chicago Pneumatic Tool Co | Spring balancing device |
US1971498A (en) * | 1932-12-10 | 1934-08-28 | Independent Pneumatic Tool Co | Counterbalance and loading and unloading device therefor |
US2031434A (en) * | 1934-05-12 | 1936-02-18 | Stern | Conductor reel |
US3085768A (en) * | 1962-01-09 | 1963-04-16 | Edward J Treutelaar | Therapeutic traction device |
US3131883A (en) * | 1961-01-25 | 1964-05-05 | White S Dental Mfg Co | Hose retrieving device |
-
1974
- 1974-01-02 US US429887A patent/US3895764A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1794825A (en) * | 1925-12-17 | 1931-03-03 | Chicago Pneumatic Tool Co | Spring balancing device |
US1971498A (en) * | 1932-12-10 | 1934-08-28 | Independent Pneumatic Tool Co | Counterbalance and loading and unloading device therefor |
US2031434A (en) * | 1934-05-12 | 1936-02-18 | Stern | Conductor reel |
US3131883A (en) * | 1961-01-25 | 1964-05-05 | White S Dental Mfg Co | Hose retrieving device |
US3085768A (en) * | 1962-01-09 | 1963-04-16 | Edward J Treutelaar | Therapeutic traction device |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4146191A (en) * | 1976-08-13 | 1979-03-27 | Industrial Safety Devices, Inc. | Microphone retriever |
US4384688A (en) * | 1981-05-26 | 1983-05-24 | Warren F. B. Lindsley | Self-storing cord and hose reel assemblies |
WO1990002901A2 (en) * | 1988-09-01 | 1990-03-22 | Houben Kunststofftechnik Gmbh | Pressure hose with matching hose drum and matching coupling piece |
EP0369513A2 (en) * | 1988-09-01 | 1990-05-23 | Houben Kunststofftechnik Gmbh | Pressure hose with a reel and coupling adapted thereto |
WO1990002901A3 (en) * | 1988-09-01 | 1991-01-24 | Houben Kunststofftech | Pressure hose with matching hose drum and matching coupling piece |
EP0369513A3 (en) * | 1988-09-01 | 1991-03-06 | Houben Kunststofftechnik Gmbh | Pressure hose with a reel and coupling adapted thereto |
US5893528A (en) * | 1997-02-12 | 1999-04-13 | Pabban Development, Inc. | Tubing retracting system |
US6726140B2 (en) * | 2001-01-05 | 2004-04-27 | Westinghouse Electric Company Llc | Take-up reel for flexible elongated members |
US6484959B1 (en) | 2001-06-22 | 2002-11-26 | Derik Grammenz | Dental tubing and cable retraction apparatus |
US6516892B2 (en) * | 2001-06-26 | 2003-02-11 | Phillips Petroleum Company | Method and apparatus for coiled tubing operations |
GB2395738B (en) * | 2001-06-26 | 2005-07-06 | Phillips Petroleum Co | Method and apparatus for coiled tubing operations |
US20080105779A1 (en) * | 2006-09-05 | 2008-05-08 | Han Joseph U | Rewind mechanism |
US20080054116A1 (en) * | 2006-09-05 | 2008-03-06 | Louis A. Kish | Rewind mechanism |
US7374123B2 (en) * | 2006-09-05 | 2008-05-20 | Louis A. Kish | Rewind mechanism |
WO2011009456A3 (en) * | 2009-07-20 | 2011-10-13 | Roberto Pintore | Cable drums for mobile television production units |
US20150308425A1 (en) * | 2014-04-29 | 2015-10-29 | The Chamberlain Group, Inc. | Power Air Compressor |
US9670034B2 (en) * | 2014-04-29 | 2017-06-06 | The Chamberlain Group, Inc. | Power air compressor |
CN104192646A (en) * | 2014-06-20 | 2014-12-10 | 蔡玲霄 | Handle wire take-up device of crane |
US20170071811A1 (en) * | 2015-03-06 | 2017-03-16 | Sargon Lazarof | Dental chair |
US10092473B2 (en) * | 2015-03-06 | 2018-10-09 | Bio-Dent, Inc. | Dental chair |
US20200306007A1 (en) * | 2017-03-11 | 2020-10-01 | Xudong Wang | Pump Structure of Portable Oral Irrigator and Portable Oral Irrigator Comprising Same |
US10359251B2 (en) * | 2017-09-20 | 2019-07-23 | Birchwood Casey, LLC | Retractable gun bore cleaning system |
US10935013B2 (en) | 2018-01-25 | 2021-03-02 | Fiac.S.R.L. | Air compressor unit |
WO2021014190A1 (en) * | 2019-07-22 | 2021-01-28 | Fiac S.R.L. | Air compression unit |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3895764A (en) | Dental retracting device | |
US6412136B1 (en) | Drain cleaning apparatus | |
JP2824231B2 (en) | Power supply winding device for vacuum cleaner | |
US5901401A (en) | Feed control device for plumbing tools | |
US6588444B2 (en) | Therapeutic gas tube safety reel having easy tube replacement means and method of replacement | |
US4826100A (en) | Device for use in unwinding or rewinding coiled electrical wire | |
US4946010A (en) | Telephone cord retraction device | |
US20050193509A1 (en) | Drain cleaning apparatus | |
US5042159A (en) | Chalk line retraction device | |
US3268937A (en) | Power driven plumber snake | |
US5690198A (en) | Ganged electric cord reels | |
US3958293A (en) | Pipe cleaning machine | |
US4813627A (en) | Rewindable hose reel | |
JPS60179184A (en) | Feed control apparatus used in piping tool | |
US20070194163A1 (en) | Reel with housing having triangular aperture for entry of linear material | |
US4237639A (en) | Telescopic fishing rod having means for extending and contracting same | |
US4611360A (en) | Pipe cleaning machine | |
EP1871548A1 (en) | Drain cleaning apparatus | |
US10442658B2 (en) | Retractable vacuum hose reel assembly | |
US4212421A (en) | Retrieval and storage device for flexible elements | |
US4487380A (en) | Reeling device | |
US3086234A (en) | Power driven snake canister | |
CA2966118C (en) | Retractable vacuum hose reel assembly | |
CN219669839U (en) | Ultrasonic inspection probe cable storage mechanism | |
CN213595614U (en) | Reel capable of freely installing multi-directional outlet pipe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MDT INSTRUMENT COMPANY;REEL/FRAME:004029/0139 Effective date: 19820726 |
|
AS | Assignment |
Owner name: MDT INSTRUMENT COMPANY A CO OF UT Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION;REEL/FRAME:004315/0312 Effective date: 19840801 |
|
AS | Assignment |
Owner name: MDT DIAGNOSTIC COMPANY Free format text: MERGER;ASSIGNOR:MDT DIAGNOSTIC COMPANY;REEL/FRAME:004537/0754 Effective date: 19860421 |
|
AS | Assignment |
Owner name: CONGRESS FINANCIAL CORPORATION (WESTERN) Free format text: SECURITY INTEREST;ASSIGNOR:MDT DIAGNOSTIC COMPANY, A UT. CORP;REEL/FRAME:004558/0542 Effective date: 19860324 |
|
AS | Assignment |
Owner name: MDT CORPORATION, A CORP. OF DE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MDT DIAGNOSTIC COMPANY, A CORP. OF UT;REEL/FRAME:005075/0257 Effective date: 19890221 |