GB206522A - - Google Patents

Info

Publication number
GB206522A
GB206522A GB27933/23A GB2793323A GB206522A GB 206522 A GB206522 A GB 206522A GB 27933/23 A GB27933/23 A GB 27933/23A GB 2793323 A GB2793323 A GB 2793323A GB 206522 A GB206522 A GB 206522A
Authority
GB
United Kingdom
Prior art keywords
coils
contacts
fixed
movable contacts
switch
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
GB27933/23A
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.)
BBC Brown Boveri AG Germany
Original Assignee
Brown Boveri und Cie AG Germany
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 Brown Boveri und Cie AG Germany filed Critical Brown Boveri und Cie AG Germany
Publication of GB206522A publication Critical patent/GB206522A/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

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Push-Button Switches (AREA)
  • Tumbler Switches (AREA)
  • Breakers (AREA)

Abstract

206,522. Akt.-Ges. Brown, Boveri, et Cie. Nov. 6, 1922,.[Convention date]. Switches; partly electromagnetic; contacts.-In order to overcome the tendency of switches to move to the off position by the electrodynamic forces set up when very heavy surges of current pass through the switch, current coils are arranged within the switch to have an electrodynamic action holding the contact member closed. In the arrangement shown in Fig. 1, the spring-mounted movable contacts c carried by the cross-piece d and serving to bridge the fixed contacts bare inconnected by two coils g in series fixed to the cross-piece and connected to the movable contacts through a flexible strap h and a conductor f. The coils carry the full current and react with the conductor f so as to press the movable contacts against the fixed contacts. In a modification, the coils are connected one in each of the leads between a terminal a and a contact b. In the arrangement shown in Fig. 3, the fixed and movable contacts b, c are in the form of split discs arranged at the ends of helical coils i, k connected with the terminals. The reaction between the coil tends to hold the switch in the closed position.
GB27933/23A 1922-11-07 1923-11-06 Expired GB206522A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA38848D DE398478C (en) 1922-11-07 1922-11-07 Switch for large instantaneous currents

Publications (1)

Publication Number Publication Date
GB206522A true GB206522A (en) 1924-12-18

Family

ID=6931044

Family Applications (2)

Application Number Title Priority Date Filing Date
GB27933/23A Expired GB206522A (en) 1922-11-07 1923-11-06
GB13082/26A Expired GB255795A (en) 1922-11-07 1926-05-21 Improvements in electric switches

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB13082/26A Expired GB255795A (en) 1922-11-07 1926-05-21 Improvements in electric switches

Country Status (6)

Country Link
US (2) US1754349A (en)
BE (2) BE313531A (en)
DE (1) DE398478C (en)
FR (2) FR572439A (en)
GB (2) GB206522A (en)
NL (2) NL13662C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003023800A1 (en) * 2001-09-06 2003-03-20 Siemens Aktiengesellschaft Switch contact arrangement comprising a device for increasing a contact-force acting between switch contacts

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE758950C (en) * 1940-02-09 1952-04-17 Porzellanfabrik Kahla Pin-shaped and tubular break contact intended for high-voltage switches
FR958108A (en) * 1943-07-13 1950-03-03
US2590523A (en) * 1947-10-11 1952-03-25 Westinghouse Electric Corp Circuit interrupter contact pressure increasing device
US2767923A (en) * 1953-07-20 1956-10-23 Milwaukee Gas Specialty Co Modulating and shut-off control apparatus
CH334097A (en) * 1955-04-06 1958-11-15 Bbc Brown Boveri & Cie Contact arrangement on circuit breakers
FR1132564A (en) * 1955-06-15 1957-03-13 Electronique & Automatisme Sa Advanced electromagnetic relays
US2857543A (en) * 1956-06-06 1958-10-21 Walter H Kohl Cathode structure for indirectly heated narrow elongated emitting surfaces
FR1225685A (en) * 1958-12-23 1960-07-04 Merlin Gerin Improvements to electrodynamically compensated pressure contacts
US3056426A (en) * 1960-10-21 1962-10-02 Hauser Fred Distributors
NL300258A (en) * 1962-11-14
DE1278590B (en) * 1965-09-13 1968-09-26 Jennings Radio Mfg Corp Vacuum switch
US4467301A (en) * 1982-08-27 1984-08-21 Essex Group, Inc. Electric switch having enhanced fault current capability
US6399907B1 (en) * 2001-06-13 2002-06-04 Honeywell International Inc. Helical coil switch contact assembly
FR2993092B1 (en) * 2012-07-03 2015-04-17 Schneider Electric Ind Sas CUTTING APPARATUS COMPRISING MEANS FOR MAINTAINING CLOSURE OF CONTACTS
EP3565407B8 (en) * 2017-01-06 2023-10-18 Discovery Purchaser Corporation Animal trap activation detection system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003023800A1 (en) * 2001-09-06 2003-03-20 Siemens Aktiengesellschaft Switch contact arrangement comprising a device for increasing a contact-force acting between switch contacts
US7202427B2 (en) 2001-09-06 2007-04-10 Siemens Aktiengesellschaft Switch contact arrangement comprising a device for increasing a contact-force acting between switch contacts

Also Published As

Publication number Publication date
BE334990A (en) 1926-07-31
NL13662C (en) 1925-10-15
GB255795A (en) 1926-07-29
BE313531A (en) 1928-11-15
NL17237C (en) 1927-11-15
US1754349A (en) 1930-04-15
DE398478C (en) 1924-07-09
FR572439A (en) 1924-06-05
FR32024E (en) 1927-08-29
US1709947A (en) 1929-04-23

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