FR870991A - Electric switch specially designed for operations exposed to firedamp or explosive gases - Google Patents

Electric switch specially designed for operations exposed to firedamp or explosive gases

Info

Publication number
FR870991A
FR870991A FR870991DA FR870991A FR 870991 A FR870991 A FR 870991A FR 870991D A FR870991D A FR 870991DA FR 870991 A FR870991 A FR 870991A
Authority
FR
France
Prior art keywords
firedamp
specially designed
electric switch
explosive gases
operations exposed
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.)
Hermes Patentverwertungs GmbH
Original Assignee
Hermes Patentverwertungs GmbH
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 Hermes Patentverwertungs GmbH filed Critical Hermes Patentverwertungs GmbH
Application granted granted Critical
Publication of FR870991A publication Critical patent/FR870991A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10—Adaptation for built-in fuses
    • H01H9/102—Fuses mounted on or constituting the movable contact parts of the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/32—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with rectilinearly-movable contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H9/042—Explosion-proof cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10—Adaptation for built-in fuses
FR870991D 1939-01-17 1941-03-20 Electric switch specially designed for operations exposed to firedamp or explosive gases Expired FR870991A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE870991X 1939-01-17

Publications (1)

Publication Number Publication Date
FR870991A true FR870991A (en) 1942-04-01

Family

ID=6810222

Family Applications (1)

Application Number Title Priority Date Filing Date
FR870991D Expired FR870991A (en) 1939-01-17 1941-03-20 Electric switch specially designed for operations exposed to firedamp or explosive gases

Country Status (1)

Country Link
FR (1) FR870991A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1632969A2 (en) 2004-09-07 2006-03-08 VEI Power Distribution S.p.A. Switch and disconnector apparatus for electric substations
US7091439B2 (en) 2003-12-02 2006-08-15 Vei Power Distribution, S.P.A. Isolator/circuit-breaker device for electric substations

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7091439B2 (en) 2003-12-02 2006-08-15 Vei Power Distribution, S.P.A. Isolator/circuit-breaker device for electric substations
EP1632969A2 (en) 2004-09-07 2006-03-08 VEI Power Distribution S.p.A. Switch and disconnector apparatus for electric substations
US7211761B2 (en) 2004-09-07 2007-05-01 Vei Power Distribution S.P.A. Switch and disconnector apparatus for electric substations
EP1632969A3 (en) * 2004-09-07 2007-07-11 VEI Power Distribution S.p.A. Switch and disconnector apparatus for electric substations

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