US2180155A - Electric contact - Google Patents

Electric contact Download PDF

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Publication number
US2180155A
US2180155A US197691A US19769138A US2180155A US 2180155 A US2180155 A US 2180155A US 197691 A US197691 A US 197691A US 19769138 A US19769138 A US 19769138A US 2180155 A US2180155 A US 2180155A
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US
United States
Prior art keywords
contact
elements
rod
members
engagement
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
Application number
US197691A
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English (en)
Inventor
Leopold Otto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US2180155A publication Critical patent/US2180155A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H1/38—Plug-and-socket contacts

Definitions

  • My invention relates toelectric contacts, and more particularly to electric contacts of the multiple element,-or segmental type, such as, for example, those used in electric circuit breakers wherein a movable rod contact coacts with a socket contact formed by a plurality of radially positioned segments which are resiliently biased into contact engagement with therod contact.
  • the principal object of my invention is the provision of an improved electric contact of the aforesaid character that is eflicient electrically, simple, rugged and compact in construction and which has a minimum number of parts.
  • Figs. 1 and 2 are elevationai and plan views, respectively, partly in section of an electric contact construction embodying the present invention
  • Fig. 3 is a view similar to Fig. 2 showing a modifledform of the contact construction
  • Fig. 4 is a fragmentary sectional view illustrating a further modification.
  • the terminal members to be interconnected comprise relatively movable contact structure includ-" position.
  • each contact elementor segment I is provided with a contact portion 5 of cylindrical contour engaging the contact support 3 in a correspondingrecess 6.
  • the element 4 therefore can rotate about its seat while maintaining good contact engagement therewith.
  • the opposite enact the element 4 5o tact surface at I adapted to engage and wipe the rod contact 2. It will therefore be apparent that when the contact portions 5 and I of eacli ⁇ eiement are biased into good contactengagement with the terminal members 3 and 2 respectively The fixed socket contact in.
  • a contact portion 1 having a con- March 23, 1938, Serial No. 197,691 In Germany May 15, 1937 a circuit. is completed between the terminals of the switch.
  • the contactelements are overlapped as illustrated and a-single resilient'element such as a spring 8 is utilized for each pair. of elements so as to establish contact pressure between the contact portion 5 of one element and its seat, and also contact pressure between the portion 1 of the overlapping element and the rod contact 2.
  • a-single resilient'element such as a spring 8 is utilized for each pair. of elements so as to establish contact pressure between the contact portion 5 of one element and its seat, and also contact pressure between the portion 1 of the overlapping element and the rod contact 2.
  • one seat of the spring is provided with an insulating member 9.
  • each contact portion I is 'urged'by a radial spring force into engagement with the rod contact 2, and each conp tact portion 5 is similarly urged into contact en- .gagement with the support or terminal member; 3, the number of springs required for obtaining proper contact pressure at both ends of each contact element '4 being equal to the number of said elements.
  • This construction is therefore not only very eflicient by reason of the complete'uti- 'lization of spring tension, but also is very' simple by reason of the comparatively few springs required, and the absence of flexible conductors or pig-tails entailing soldered or bolted joints generally used for connecting the resiliently biased segments to the fixed terminal portion.
  • the elements t act as stops for each other so that the inner circular space formerly occupied by the rod 2 is merely restricted in area.
  • the rounded end of the contact rod in the circuit-closing operation is therefore effective by cam action on the elements 4 to compress the springs 8 and move to the closed circuit position shown.
  • Fig. 3 there is shown a generallysimilar arrangement wherein the contact elements ID are biased in the manner above described by springs II so that the contact surfaces of the elements It! are urged by tangential force into contact with the rod 2. In certain cases this may produce a wipe action tending to clean the contact surfaces.
  • the contact elements are otherwise biased by a spring common to each pair of elemerits in the manner described in connection with Figs. 1 and 2.
  • Fig. 4 illustrates a modification of the convtactsupportwrherein the socket-contact is used is a gas blast circuit breaker.
  • the gas exhaust is preferably of nozzle shape.
  • the contact support 3 is accordingly provided with a flanged ring l2 having a desired flared contour l3 for the gas exhaust.
  • the contact elements indicated at It can be mounted in the support in any suitable manner for coaction with a rod contact (not shown).
  • the contact arrangement above described includes not only a resilient element or spring common to each pair of contact elements, so that the entire spring force is utilized for obtaining contact engagement, but also that each contact element is acted on by two separate springs at its two contacting surfaces respectively.
  • each contact element is acted on by two separate springs at its two contacting surfaces respectively.
  • An electric contact for interconnecting two relatively movable members disposed in concentric arrangement comprising a plurality of elements disposed between said members and each electrically engaging said members respectively,-
  • An electric contact for interconnecting two relatively movable members comprising a plurality of conducting elements each biased into contact engagement at its opposite ends with said members respectively, and mounted with respect to one of said members for limited movement, and a compression spring mounted between ends of adjacent contact elements for biasing said ends into engagement with said relatively movable members respectively.
  • An electric contact for interconnecting a pair of terminal members disposed in concentric arrangement comprising a plurality of conducting elements each electrically wi l said members respectively, said elements being arranged in a circle between said members, and spring means common to any two adjacent elements for biasing each element into contact engagement with both said members respectively.
  • An electric contact for interconnecting a pair of terminal members including a cylindrical conductor'and a rod conductor adapted to be positioned concentrically thereof, comprising a plurality of conducting elements radially positioned about said rod, each element enga in said terminal members respectively, and a spring coacting with each pair of said elements for biasing a portion of one element into contact engagement with said cylindrical conductor and a pmengagement with said rod.
  • An electric contact'oi the socket type for interconnecting relatively movable plug and socket members comprising a plurality of conducting elements concentrically positioned around said plug member and within said socket member, and a plurality of springs corresponding in number to said elements for biasing said elements into contact engagement with said members respectively, said springs arranged between said elements so that each element is biased at its two contact surfaces by separate springs and so that each spring acts on a pair of contact elements.
  • An electric contact for interconnecting a pair of terminal members including a cylindrical conductor in which a rod conductor is concentrically positioned, comprising a plurality of conducting elements mounted within said cylinder and surrounding said rod, each element being seated for rotative movement in said cylinder and adapted to engage in wipe contact said rod, said elements being positioned in overlapping relation, and a plurality of resilient members corresponding in number to said elements coacting with said elements, so that each element is biased into contact engagement at its seat of rotation and at its rod contacting surface by individual resilient members and each pair of elements is acted upon by a resilient member common thereto.
  • An electric contact of the socket-type comprising a generally circular conducting contact support, a plurality of conducting elements circumferentially arranged within said support, each element-being in movable contact engagement 'with said support and adapted also to engage a centrally disposed coacting contact rod, said elements being in overlapping relation so that the rod contacting portion of one element substantially overlies the support contacting portion of an adjacent element and a spring for each pair of elements positioned between said contacting portions for biasing the same radially into current carrying contact engagement.
  • An electric contact of the socket type comprising a generally circular conducting contact support, a plurality of conducting elements circumferentially arranged within said support,
  • each element being in movable contact engagement with said support and adapted also to engage a centrally disposed coacting contact rod, said elements being in overlapping relation so that the rod contacting portion of one element substantially overlies the support contacting portion of an adjacent element and a spring for each pair of elements positioned between said contacting portions for biasing one element into contact engagement with said support and the other element in a tangential direction into contact O'I'IO LIOPOLD.

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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Contacts (AREA)
US197691A 1937-05-15 1938-03-23 Electric contact Expired - Lifetime US2180155A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE204612X 1937-05-15

Publications (1)

Publication Number Publication Date
US2180155A true US2180155A (en) 1939-11-14

Family

ID=5782767

Family Applications (1)

Application Number Title Priority Date Filing Date
US197691A Expired - Lifetime US2180155A (en) 1937-05-15 1938-03-23 Electric contact

Country Status (3)

Country Link
US (1) US2180155A (de)
CH (1) CH204612A (de)
GB (1) GB494829A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2691085A (en) * 1951-06-26 1954-10-05 Gen Electric Electric circuit interrupter
US3526736A (en) * 1968-12-19 1970-09-01 Allis Chalmers Mfg Co Sliding contact
US3751619A (en) * 1971-07-01 1973-08-07 Bbc Brown Boveri & Cie Electrical contact structure of the plug-and-socket type circuit breakers
US3956607A (en) * 1973-05-03 1976-05-11 Coq B.V. Electric contact device
FR2638904A1 (fr) * 1988-11-04 1990-05-11 Alsthom Gec Contact electrique notamment pour equipement a embrochage

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2691085A (en) * 1951-06-26 1954-10-05 Gen Electric Electric circuit interrupter
US3526736A (en) * 1968-12-19 1970-09-01 Allis Chalmers Mfg Co Sliding contact
US3751619A (en) * 1971-07-01 1973-08-07 Bbc Brown Boveri & Cie Electrical contact structure of the plug-and-socket type circuit breakers
US3956607A (en) * 1973-05-03 1976-05-11 Coq B.V. Electric contact device
FR2638904A1 (fr) * 1988-11-04 1990-05-11 Alsthom Gec Contact electrique notamment pour equipement a embrochage

Also Published As

Publication number Publication date
GB494829A (en) 1938-11-01
CH204612A (de) 1939-05-15

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