US1477527A - Contact spring - Google Patents
Contact spring Download PDFInfo
- Publication number
- US1477527A US1477527A US633513A US63351323A US1477527A US 1477527 A US1477527 A US 1477527A US 633513 A US633513 A US 633513A US 63351323 A US63351323 A US 63351323A US 1477527 A US1477527 A US 1477527A
- Authority
- US
- United States
- Prior art keywords
- contact
- springs
- contact spring
- faces
- spring
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/42—Knife-and-clip contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/10—Sockets for co-operation with pins or blades
- H01R13/11—Resilient sockets
- H01R13/115—U-shaped sockets having inwardly bent legs, e.g. spade type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/36—Conductive members located under tip of screw
Definitions
- spark drawing devices in connection with contact springs which however complicates the construction of the contact springs. said spark-drawing devices moreover not being-adapted to assist in the transmission of current.
- the contact springs are made of several springs which with regard to the counter-contact part are situated the one behind the other. It. has already become known to subdivide contact springs so that, at higher intensities of current, the springs are subdivided by milled sits into several parts situated the one at the side of the other, each part being independently resilientf According to this invention the subdivision of the springs in transverse direction may be utilized also.
- Fig. 3 shows an arrangement of three contact springs a 6 ,9 the one behind the other which differ from the contact sprin s shown in Figs. 1 and 2' only as regards the shape of the contact faces.
Description
Dec, 11 1923 31,477,527
B. RAETTIG CONTACT SPRING Filed April 20, 1923 Fig.1.
iiiiij f Patented Dec. Ill, 1923.
UNHD STTS Lei-W 52? BRUNO RAETTIG, OF HOFFNUNGSTHAL, GERMANY.
CONTACT SPRING.
Application filed April 20, 1923. Serial No. 633,513.-
T 0 all whom it may concern:
Be it known that I, BRUNO RAETTIG, a citizen of the German Reich, residing at Hotfnungsthal. Germany. have. invented certain new and useful Improvements in Contact Springs (for which an ap'pli "at-ion for patent has been filed in Germany on the March 9th. 1922). of which the following is a specification.
This invention relates to a contact spring of the type used for electric apparatus, specially for electric switch apparatus;
The contact springs commonly used.-especial'y for higher intensities of current. present the inconvenience that the contact faces of the contact spring are in contact" only with a small part of their total surface with the counter-contact faces. for instance the contact faces of the switch-knives. whereby detrimental heating frequently results. This poor contact is further increased by the spark produced at the interruption. said spark producing burnt spots on the contact surfaces. Under certain conditions, the molten drops produced at the burnt points push the contact springs away from one another and prevent a perfect contact with the counter-contact faces.
To avoid these inconveniences it has been proposed to use spark drawing devices in connection with contact springs which however complicates the construction of the contact springs. said spark-drawing devices moreover not being-adapted to assist in the transmission of current.
According to this invention the incon veniences mentioned are avoided by the arrangement that the contact springs are made of several springs which with regard to the counter-contact part are situated the one behind the other. It. has already become known to subdivide contact springs so that, at higher intensities of current, the springs are subdivided by milled sits into several parts situated the one at the side of the other, each part being independently resilientf According to this invention the subdivision of the springs in transverse direction may be utilized also. I
The springs of the several layers are pref- I erably of different lengths so that the'contact faces of the individual perposed.
The subdivision according to the invention presents the advantage that even at high intensities of current comparatively springs are suthin blades of sheet metal may be used, the accurate working and fashioning of thin sheet metal being much easier than that of thick. sheet metal. Another advantage is that each of the successive springs possesses individuai elasticity and comes in contact with the counter contact. By this arrangement a much better contact is ensured, since, if one pair of contact faces'should faiT, only a very small part of the total contact surface 'is inoperative whilst with contact springs made in one piece the entire contact surface becomes inactive if the contact is poor. The outer contact spring serves in this arrangement as a spark-drawing device. Four embodiments of the invention are shown by way of example onthe accompanying drawing. the contact springs shown being of the preferred shape produced by the bending of two arms in different shapes.
Each of the Figures 1 to it shows in front elevation one embodiment of the invention. Figs. 1 to l are respective side elevations of these embodiments.
According to Fig. l the contact spring consists of two contact springs a, Z) of which the outer one, a, has short inwardly bent arms, the inner one, I), havmg longer inwardly bent arms. These bent arms serve as contact surfaces. The contact springs a and b are fixed by soldering or by means of screws in the well known manner in a slitted connecting piece a. The line wires are clamped in a bore 7 of the connecting piece 0 by means of a wire terminal screw d. The connection may however be effected in any other convenient manner.
In the form of construction shown in Fig. 2 three single springs a, b, 72 are arranged the one behind the other. Each contact spring is 'further subdivided in transverse direction bv meansof slits or in such a manner that iii the slit of a connecting piece 0 several contact springs are fixed the one at the side of the other in transverse direction.
Fig. 3 shows an arrangement of three contact springs a 6 ,9 the one behind the other which differ from the contact sprin s shown in Figs. 1 and 2' only as regards the shape of the contact faces.
Fig. at shows an arrangement of-several contact springs (1 b k similar to Figs. 1 to 3. The individual contact springs are however made from comparatlvely thin sheet metal and joggled at several points in longitudinal direction. This arrangement ensures an especially soft but good elasticity and contactgi'ving; The shape of each in dividual spring maybe altered otherwise in any convenient, manner. 1
I claim I In a switch if the kind as described, a spring contact comprising nested U-shaped 'members, the arms f said members-being 10' turned inwardly to form opposite series of aligned spaced contact faces, the arms .s'lip porting said faces being independently resilient.
' In testimony, whereof I aflix my signature in presence 0 two witnesses.
' BRUNO RAETTIG. Witnesses: HENRY W. HAAs, G. Ronnscnnn. o
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH104663D CH104663A (en) | 1923-04-03 | 1923-04-04 | Contact spring. |
US633513A US1477527A (en) | 1923-04-03 | 1923-04-20 | Contact spring |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB910423A GB211366A (en) | 1923-04-03 | 1923-04-03 | Improvements in electric contacts |
US633513A US1477527A (en) | 1923-04-03 | 1923-04-20 | Contact spring |
Publications (1)
Publication Number | Publication Date |
---|---|
US1477527A true US1477527A (en) | 1923-12-11 |
Family
ID=26242695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US633513A Expired - Lifetime US1477527A (en) | 1923-04-03 | 1923-04-20 | Contact spring |
Country Status (2)
Country | Link |
---|---|
US (1) | US1477527A (en) |
CH (1) | CH104663A (en) |
Cited By (61)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2425608A (en) * | 1944-05-23 | 1947-08-12 | Gen Railway Signal Co | Plug coupling apparatus |
US2779844A (en) * | 1955-06-02 | 1957-01-29 | Mcgraw Electric Co | Equalized multiple high pressure contact |
US2917612A (en) * | 1957-11-25 | 1959-12-15 | Ite Circuit Breaker Ltd | Plug in disconnects |
US3648222A (en) * | 1970-03-16 | 1972-03-07 | Bunker Ramo | Electrical connector having laminated contact element |
US3691511A (en) * | 1970-10-05 | 1972-09-12 | Bunker Ramo | Plug connection contact with high security against burning off |
US4795379A (en) * | 1986-08-27 | 1989-01-03 | Amp Incorporated | Four leaf receptacle contact |
WO1997045851A1 (en) * | 1996-05-24 | 1997-12-04 | Asea Brown Boveri Ab | Electric switching device |
US20020142663A1 (en) * | 2001-03-07 | 2002-10-03 | Tetsuo Takeyama | Contact terminal and card connector having the same |
US6604967B2 (en) * | 1998-09-15 | 2003-08-12 | Tyco Electronics Corporation | Socket assembly and female connector for use therewith |
US6607405B2 (en) | 2000-04-27 | 2003-08-19 | Yamaichi Electronics Co., Ltd. | Multi-card card connector for multi-type cards |
US6645012B2 (en) | 2000-08-08 | 2003-11-11 | Yamaichi Electrics Co., Ltd. | Card edge connector comprising a housing and a plurality of contacts |
US6652322B2 (en) * | 2001-02-09 | 2003-11-25 | Yamaichi Electronics Co., Ltd. | Card-edge connector |
US6685512B2 (en) | 2001-01-19 | 2004-02-03 | Yamaichi Electronics Co., Ltd. | Card connector |
US7182645B2 (en) | 2004-01-23 | 2007-02-27 | Yamaichi Electronics Co., Ltd. | Card connector for an electronic device and a contact used therein |
US20070224887A1 (en) * | 2006-03-27 | 2007-09-27 | Hon Hai Precision Ind. Co., Ltd. | Land grid array socket |
US7402064B2 (en) | 2003-12-31 | 2008-07-22 | Fci Americas Technology, Inc. | Electrical power contacts and connectors comprising same |
US7425145B2 (en) | 2006-05-26 | 2008-09-16 | Fci Americas Technology, Inc. | Connectors and contacts for transmitting electrical power |
US7438598B1 (en) | 1999-11-05 | 2008-10-21 | Yamaichi Electronics Co., Ltd. | Card connector |
US7458839B2 (en) | 2006-02-21 | 2008-12-02 | Fci Americas Technology, Inc. | Electrical connectors having power contacts with alignment and/or restraining features |
US7476108B2 (en) | 2004-12-22 | 2009-01-13 | Fci Americas Technology, Inc. | Electrical power connectors with cooling features |
US7541135B2 (en) | 2005-04-05 | 2009-06-02 | Fci Americas Technology, Inc. | Power contact having conductive plates with curved portions contact beams and board tails |
US7641500B2 (en) | 2007-04-04 | 2010-01-05 | Fci Americas Technology, Inc. | Power cable connector system |
USD608293S1 (en) | 2009-01-16 | 2010-01-19 | Fci Americas Technology, Inc. | Vertical electrical connector |
US20100029102A1 (en) * | 2008-08-04 | 2010-02-04 | Hon Hai Precision Industry Co., Ltd. | Electrical connector having reinforced contacts arrangement |
USD610548S1 (en) | 2009-01-16 | 2010-02-23 | Fci Americas Technology, Inc. | Right-angle electrical connector |
US7726982B2 (en) | 2006-06-15 | 2010-06-01 | Fci Americas Technology, Inc. | Electrical connectors with air-circulation features |
USD618180S1 (en) | 2009-04-03 | 2010-06-22 | Fci Americas Technology, Inc. | Asymmetrical electrical connector |
USD618181S1 (en) | 2009-04-03 | 2010-06-22 | Fci Americas Technology, Inc. | Asymmetrical electrical connector |
USD619099S1 (en) | 2009-01-30 | 2010-07-06 | Fci Americas Technology, Inc. | Electrical connector |
US7749009B2 (en) | 2005-01-31 | 2010-07-06 | Fci Americas Technology, Inc. | Surface-mount connector |
US7762857B2 (en) | 2007-10-01 | 2010-07-27 | Fci Americas Technology, Inc. | Power connectors with contact-retention features |
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US7914350B1 (en) | 2010-04-13 | 2011-03-29 | Cadwell Labs | Apparatus, system, and method for creating an electrical connection to a tool |
USD640637S1 (en) | 2009-01-16 | 2011-06-28 | Fci Americas Technology Llc | Vertical electrical connector |
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US8062051B2 (en) | 2008-07-29 | 2011-11-22 | Fci Americas Technology Llc | Electrical communication system having latching and strain relief features |
US20120083171A1 (en) * | 2009-08-17 | 2012-04-05 | Byrne Norman R | Solid wire terminal |
USD664096S1 (en) | 2009-01-16 | 2012-07-24 | Fci Americas Technology Llc | Vertical electrical connector |
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US8905651B2 (en) | 2012-01-31 | 2014-12-09 | Fci | Dismountable optical coupling device |
USD720698S1 (en) | 2013-03-15 | 2015-01-06 | Fci Americas Technology Llc | Electrical cable connector |
US8944831B2 (en) | 2012-04-13 | 2015-02-03 | Fci Americas Technology Llc | Electrical connector having ribbed ground plate with engagement members |
USD727268S1 (en) | 2012-04-13 | 2015-04-21 | Fci Americas Technology Llc | Vertical electrical connector |
USD727852S1 (en) | 2012-04-13 | 2015-04-28 | Fci Americas Technology Llc | Ground shield for a right angle electrical connector |
US9048583B2 (en) | 2009-03-19 | 2015-06-02 | Fci Americas Technology Llc | Electrical connector having ribbed ground plate |
USD733662S1 (en) | 2013-01-25 | 2015-07-07 | Fci Americas Technology Llc | Connector housing for electrical connector |
US20150229058A1 (en) * | 2012-09-17 | 2015-08-13 | Rosenberger Hochfrequenztechnik Gmbh & Co. Kg | Contact element |
USD746236S1 (en) | 2012-07-11 | 2015-12-29 | Fci Americas Technology Llc | Electrical connector housing |
US9257778B2 (en) | 2012-04-13 | 2016-02-09 | Fci Americas Technology | High speed electrical connector |
US9543703B2 (en) | 2012-07-11 | 2017-01-10 | Fci Americas Technology Llc | Electrical connector with reduced stack height |
US9711921B2 (en) | 2015-02-27 | 2017-07-18 | Norman R. Byrne | Electrical contact receptacle for bus bars and blade terminals |
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-
1923
- 1923-04-04 CH CH104663D patent/CH104663A/en unknown
- 1923-04-20 US US633513A patent/US1477527A/en not_active Expired - Lifetime
Cited By (100)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2425608A (en) * | 1944-05-23 | 1947-08-12 | Gen Railway Signal Co | Plug coupling apparatus |
US2779844A (en) * | 1955-06-02 | 1957-01-29 | Mcgraw Electric Co | Equalized multiple high pressure contact |
US2917612A (en) * | 1957-11-25 | 1959-12-15 | Ite Circuit Breaker Ltd | Plug in disconnects |
US3648222A (en) * | 1970-03-16 | 1972-03-07 | Bunker Ramo | Electrical connector having laminated contact element |
US3691511A (en) * | 1970-10-05 | 1972-09-12 | Bunker Ramo | Plug connection contact with high security against burning off |
US4795379A (en) * | 1986-08-27 | 1989-01-03 | Amp Incorporated | Four leaf receptacle contact |
WO1997045851A1 (en) * | 1996-05-24 | 1997-12-04 | Asea Brown Boveri Ab | Electric switching device |
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US6835103B2 (en) | 1998-09-15 | 2004-12-28 | Tyco Electronics Corporation | Electrical contacts and socket assembly |
US6604967B2 (en) * | 1998-09-15 | 2003-08-12 | Tyco Electronics Corporation | Socket assembly and female connector for use therewith |
US7438598B1 (en) | 1999-11-05 | 2008-10-21 | Yamaichi Electronics Co., Ltd. | Card connector |
US6607405B2 (en) | 2000-04-27 | 2003-08-19 | Yamaichi Electronics Co., Ltd. | Multi-card card connector for multi-type cards |
US6645012B2 (en) | 2000-08-08 | 2003-11-11 | Yamaichi Electrics Co., Ltd. | Card edge connector comprising a housing and a plurality of contacts |
US6685512B2 (en) | 2001-01-19 | 2004-02-03 | Yamaichi Electronics Co., Ltd. | Card connector |
US6652322B2 (en) * | 2001-02-09 | 2003-11-25 | Yamaichi Electronics Co., Ltd. | Card-edge connector |
US6793536B2 (en) | 2001-03-07 | 2004-09-21 | Yamaichi Electronics Co., Ltd. | Contact terminal and card connector having the same |
US20020142663A1 (en) * | 2001-03-07 | 2002-10-03 | Tetsuo Takeyama | Contact terminal and card connector having the same |
US7402064B2 (en) | 2003-12-31 | 2008-07-22 | Fci Americas Technology, Inc. | Electrical power contacts and connectors comprising same |
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US9281598B2 (en) * | 2012-09-17 | 2016-03-08 | Rosenberger Hochfrequenztechnik Gmbh & Co. Kg | Contact element |
US20150229058A1 (en) * | 2012-09-17 | 2015-08-13 | Rosenberger Hochfrequenztechnik Gmbh & Co. Kg | Contact element |
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