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FR40482E - Improvements made to vacuum devices, and more particularly to switches - Google Patents

Improvements made to vacuum devices, and more particularly to switches

Info

Publication number
FR40482E
FR40482E FR40482DA FR40482E FR 40482 E FR40482 E FR 40482E FR 40482D A FR40482D A FR 40482DA FR 40482 E FR40482 E FR 40482E
Authority
FR
France
Prior art keywords
switches
improvements made
vacuum devices
vacuum
devices
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
Priority claimed from US264116A external-priority patent/US1865274A/en
Priority claimed from US264114A external-priority patent/US1814851A/en
Priority claimed from US264210A external-priority patent/US1821813A/en
Priority claimed from US264115A external-priority patent/US1892538A/en
Priority claimed from US279154A external-priority patent/US1731866A/en
Priority claimed from US285412A external-priority patent/US1792340A/en
Priority claimed from US467717A external-priority patent/US1919987A/en
Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR40482E publication Critical patent/FR40482E/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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/668—Means for obtaining or monitoring the vacuum
FR40482D 1928-03-23 1931-07-07 Improvements made to vacuum devices, and more particularly to switches Expired FR40482E (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
US264116A US1865274A (en) 1928-03-23 1928-03-23 Circuit interrupter
US264114A US1814851A (en) 1928-03-23 1928-03-23 Circuit controlling apparatus
US264210A US1821813A (en) 1928-03-23 1928-03-23 Circuit making and breaking device
US264115A US1892538A (en) 1928-03-23 1928-03-23 Vacuum switch
US279154A US1731866A (en) 1928-05-19 1928-05-19 Circuit-controlling system
US285412A US1792340A (en) 1928-06-14 1928-06-14 Circuit interrupter
US314352XA 1928-06-25 1928-06-25
US28809428A 1928-06-25 1928-06-25
US467717A US1919987A (en) 1930-07-14 1930-07-14 Vacuum circuit interrupting apparatus

Publications (1)

Publication Number Publication Date
FR40482E true FR40482E (en) 1932-06-30

Family

ID=31950991

Family Applications (1)

Application Number Title Priority Date Filing Date
FR40482D Expired FR40482E (en) 1928-03-23 1931-07-07 Improvements made to vacuum devices, and more particularly to switches

Country Status (1)

Country Link
FR (1) FR40482E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0309978A3 (en) * 1987-09-29 1989-07-26 Mitsubishi Denki Kabushiki Kaisha Vacuum discharge device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0309978A3 (en) * 1987-09-29 1989-07-26 Mitsubishi Denki Kabushiki Kaisha Vacuum discharge device

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