FR641149A - Improvements made to switches and electrical circuit breakers - Google Patents

Improvements made to switches and electrical circuit breakers

Info

Publication number
FR641149A
FR641149A FR641149DA FR641149A FR 641149 A FR641149 A FR 641149A FR 641149D A FR641149D A FR 641149DA FR 641149 A FR641149 A FR 641149A
Authority
FR
France
Prior art keywords
switches
electrical circuit
circuit breakers
improvements made
breakers
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 FR641149A publication Critical patent/FR641149A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/55—Oil reservoirs or tanks; Lowering means therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
FR641149D 1926-10-01 1927-09-20 Improvements made to switches and electrical circuit breakers Expired FR641149A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13897126 US1792302A (en) 1926-10-01 1926-10-01 Safety valve for electric switches

Publications (1)

Publication Number Publication Date
FR641149A true FR641149A (en) 1928-07-28

Family

ID=22484509

Family Applications (1)

Application Number Title Priority Date Filing Date
FR641149D Expired FR641149A (en) 1926-10-01 1927-09-20 Improvements made to switches and electrical circuit breakers

Country Status (3)

Country Link
US (1) US1792302A (en)
FR (1) FR641149A (en)
GB (1) GB278368A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525487A (en) * 1944-10-17 1950-10-10 Westinghouse Electric Corp Relief device
US2973776A (en) * 1959-02-20 1961-03-07 Cameron Iron Works Inc Snap-acting pressure relief valve

Also Published As

Publication number Publication date
US1792302A (en) 1931-02-10
GB278368A (en) 1928-11-01

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