FR553740A - Manually operated electric switches, which can operate automatically under the action of heat - Google Patents

Manually operated electric switches, which can operate automatically under the action of heat

Info

Publication number
FR553740A
FR553740A FR553740DA FR553740A FR 553740 A FR553740 A FR 553740A FR 553740D A FR553740D A FR 553740DA FR 553740 A FR553740 A FR 553740A
Authority
FR
France
Prior art keywords
action
heat
manually operated
automatically under
electric switches
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 FR553740A publication Critical patent/FR553740A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/22—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release
    • H01H73/26—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release reset by tumbler
FR553740D 1921-07-11 1922-07-07 Manually operated electric switches, which can operate automatically under the action of heat Expired FR553740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US483729A US1540692A (en) 1921-07-11 1921-07-11 Thermal responsive manually-operable switch

Publications (1)

Publication Number Publication Date
FR553740A true FR553740A (en) 1923-05-29

Family

ID=23921282

Family Applications (1)

Application Number Title Priority Date Filing Date
FR553740D Expired FR553740A (en) 1921-07-11 1922-07-07 Manually operated electric switches, which can operate automatically under the action of heat

Country Status (2)

Country Link
US (1) US1540692A (en)
FR (1) FR553740A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528591A (en) * 1946-01-11 1950-11-07 Trumbull Electric Mfg Co Electric relay

Also Published As

Publication number Publication date
US1540692A (en) 1925-06-02

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