FR540773A - Improvements to electrical switches - Google Patents

Improvements to electrical switches

Info

Publication number
FR540773A
FR540773A FR540773DA FR540773A FR 540773 A FR540773 A FR 540773A FR 540773D A FR540773D A FR 540773DA FR 540773 A FR540773 A FR 540773A
Authority
FR
France
Prior art keywords
electrical switches
switches
electrical
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
Other languages
French (fr)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston 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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR540773A publication Critical patent/FR540773A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
FR540773D 1920-02-27 1921-02-26 Improvements to electrical switches Expired FR540773A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US361694A US1503090A (en) 1920-02-27 1920-02-27 Electromagnet

Publications (1)

Publication Number Publication Date
FR540773A true FR540773A (en) 1922-07-18

Family

ID=23423089

Family Applications (1)

Application Number Title Priority Date Filing Date
FR540773D Expired FR540773A (en) 1920-02-27 1921-02-26 Improvements to electrical switches

Country Status (2)

Country Link
US (1) US1503090A (en)
FR (1) FR540773A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426970A (en) * 1940-09-07 1947-09-02 Union Switch & Signal Co Electrical relay
US2424308A (en) * 1942-09-15 1947-07-22 Westinghouse Electric Corp Contactor
US2439930A (en) * 1942-10-10 1948-04-20 Westinghouse Electric Corp Differential relay and restraint magnet therefor
US2682020A (en) * 1951-06-06 1954-06-22 Allis Chalmers Mfg Co Electromagnet with u-shaped armature
US2882368A (en) * 1955-07-18 1959-04-14 Comar Electric Company Electromagnetic relay
US2967918A (en) * 1958-04-30 1961-01-10 Soroban Inc High speed relay

Also Published As

Publication number Publication date
US1503090A (en) 1924-07-29

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