GB743178A - Improvements in or relating to electric switches - Google Patents

Improvements in or relating to electric switches

Info

Publication number
GB743178A
GB743178A GB12916/52A GB1291652A GB743178A GB 743178 A GB743178 A GB 743178A GB 12916/52 A GB12916/52 A GB 12916/52A GB 1291652 A GB1291652 A GB 1291652A GB 743178 A GB743178 A GB 743178A
Authority
GB
United Kingdom
Prior art keywords
armature
contacts
tends
magnet
current
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
Application number
GB12916/52A
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique SA
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 La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Publication of GB743178A publication Critical patent/GB743178A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • 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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/225—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member the supporting member being pivotable

Landscapes

  • Electromagnets (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Contacts (AREA)

Abstract

743,178. Electromagnetic switches. TELEMECANIQUE ELECTRIQUE. May 21, 1952 [Sept. 19, 1951], No. 12916/52. Class 38(5) The movable contact 9 of a contactor is mounted on a pivoted member 8 which lies in the trough of a U-shaped magnetic member 11 and the current flowing through the member 8 creates a magnetic field in the member 11 which tends to reinforce the pressure between the contacts R, 9 and to counteract the electrodynamic force which, due to the current nowing in a loop, tends to separate the contacts. In the form shown the invention is applied to a contactor having an operating magnet 15 which, when energized. attracts an armature 16 carried by a suaft 14 which carries the member 11. The member 8 is pivoted at 10 to the member 11 and is acted on by a spring 17 through a magnetic plate 20 which acts as armature to the magnet 11. Further rotation of the shaft 14 after the contacts engage causes the armature 20 to move slightly away from the magnet 11 and the spring 17 to be compressed. In a modification, Figs. 4, 5 (not shown). the armature 20 is dispensed with. and the flux between the arms of the U-shaped member 11 by interacting with the current in the member 8 tends to press the contacts together.
GB12916/52A 1951-09-19 1952-05-21 Improvements in or relating to electric switches Expired GB743178A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1042303T 1951-09-19

Publications (1)

Publication Number Publication Date
GB743178A true GB743178A (en) 1956-01-11

Family

ID=9589969

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12916/52A Expired GB743178A (en) 1951-09-19 1952-05-21 Improvements in or relating to electric switches

Country Status (4)

Country Link
US (1) US2679561A (en)
BE (1) BE510633A (en)
FR (1) FR1042303A (en)
GB (1) GB743178A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1157293B (en) * 1962-01-31 1963-11-14 Siemens Ag Set up on electrical switches
DE1282776B (en) * 1960-09-08 1968-11-14 Siemens Ag Electric switch
US3794948A (en) * 1970-10-02 1974-02-26 Fuse Indicator Corp Blown fuse indicators
DE3503431A1 (en) * 1984-02-03 1985-08-08 La Télémécanique Electrique, Nanterre, Hauts-de-Seine CONTACT EQUIPPED WITH A MAGNETIC COMPENSATOR WITH ADJUSTABLE RELEASE THRESHOLD, AND CONTACTOR WITH SUCH A CONTACT

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123691A (en) * 1964-03-03 Movable contact assembly with a magnetic shield
US2795671A (en) * 1952-07-17 1957-06-11 Westinghouse Electric Corp Circuit breakers
US2841670A (en) * 1954-12-23 1958-07-01 Allis Chalmers Mfg Co Frictionless plunger switch having alignable self-holding contacts
US2828380A (en) * 1955-03-14 1958-03-25 Westinghouse Electric Corp Flux phase shifter and high speed closing with contact construction
US2883487A (en) * 1957-01-31 1959-04-21 Westinghouse Electric Corp Electromagnetic device
US2989603A (en) * 1959-02-05 1961-06-20 S & C Electric Co Interrupter switch operating mechanism
US3065317A (en) * 1960-09-29 1962-11-20 Gen Electric Alternating current circuit interrupter
FR1285301A (en) * 1960-12-20 1962-02-23 Merlin Gerin Electrical contact device for circuit breakers
US3263042A (en) * 1963-02-18 1966-07-26 Westinghouse Electric Corp Electric control device with electromagnetic contact-biasing means
US3225160A (en) * 1963-10-25 1965-12-21 Gen Electric Electric switch
US3238326A (en) * 1964-06-26 1966-03-01 Allis Chalmers Mfg Co Contactor with a load current hold-in feature
US3419828A (en) * 1966-12-13 1968-12-31 Arrow Hart Inc Means proportional to magnetic flux to bias electric switch contacts closed
US3560683A (en) * 1968-01-24 1971-02-02 Westinghouse Electric Corp Circuit breaker with improved contact structure
US4030053A (en) * 1975-09-11 1977-06-14 Westinghouse Electric Corporation Distribution transformer secondary circuit breaker having cantilevered contacts
US4006439A (en) * 1975-09-11 1977-02-01 Westinghouse Electric Corporation Circuit interrupter having an insulated bridging contact
FR2483683A1 (en) * 1980-05-30 1981-12-04 Telemecanique Electrique CONTACTOR HAVING CIRCUIT BREAKER PROPERTIES
FR2517463A1 (en) * 1981-11-30 1983-06-03 Telemecanique Electrique CONTACTOR PROVIDED WITH SELF-PROTECTING MEANS AGAINST THE EFFECTS OF REPULSION FORCES BETWEEN THE CONTACTS, AND ITS ASSOCIATION WITH A DEVICE FOR CUTTING AND LIMITING SHORT CIRCUIT CURRENTS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE18630E (en) * 1932-10-18 Hxuse electric
US1395327A (en) * 1920-10-18 1921-11-01 Westinghouse Electric & Mfg Co Circuit-breaker
US1753650A (en) * 1927-09-10 1930-04-08 Frazer W Gay Electric switch
US2590523A (en) * 1947-10-11 1952-03-25 Westinghouse Electric Corp Circuit interrupter contact pressure increasing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1282776B (en) * 1960-09-08 1968-11-14 Siemens Ag Electric switch
DE1157293B (en) * 1962-01-31 1963-11-14 Siemens Ag Set up on electrical switches
US3794948A (en) * 1970-10-02 1974-02-26 Fuse Indicator Corp Blown fuse indicators
DE3503431A1 (en) * 1984-02-03 1985-08-08 La Télémécanique Electrique, Nanterre, Hauts-de-Seine CONTACT EQUIPPED WITH A MAGNETIC COMPENSATOR WITH ADJUSTABLE RELEASE THRESHOLD, AND CONTACTOR WITH SUCH A CONTACT

Also Published As

Publication number Publication date
FR1042303A (en) 1953-10-30
US2679561A (en) 1954-05-25
BE510633A (en)

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