GB492189A - Improvements in or relating to vacuum and other sealed-container electric switches - Google Patents

Improvements in or relating to vacuum and other sealed-container electric switches

Info

Publication number
GB492189A
GB492189A GB784237A GB784237A GB492189A GB 492189 A GB492189 A GB 492189A GB 784237 A GB784237 A GB 784237A GB 784237 A GB784237 A GB 784237A GB 492189 A GB492189 A GB 492189A
Authority
GB
United Kingdom
Prior art keywords
container
magnet
sealed
relating
vacuum
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
GB784237A
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.)
British Thermostat Co Ltd
Original Assignee
British Thermostat Co Ltd
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 British Thermostat Co Ltd filed Critical British Thermostat Co Ltd
Priority to GB784237A priority Critical patent/GB492189A/en
Publication of GB492189A publication Critical patent/GB492189A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H01H51/288—Freely suspended contacts
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermally Actuated Switches (AREA)
  • Control Of Combustion (AREA)

Abstract

492,189. Electromagnetic switches. BRITISH THERMOSTAT CO., Ltd., and SHERLOCK, J. E. March 17, 1937, No. 7842. [Class 38 (v)] One or more magnetic bars 3 are adapted to be attracted by an electromagnet 4 intc bridging engagement with twc semicircular fixed contacts 2 arranged at the ends of a sealed container 1. The bars 3 may be pulled back intc their original position by a per. manent or electromagnet 5. To reclose the switch the magnet 5 may be de-energized or moved away from the container 1. Or the magnet 4 may be sufficiently strong to overcome the action of the magnet 5. The container may be exhausted or filled with a gas such as hydrogen.
GB784237A 1937-03-17 1937-03-17 Improvements in or relating to vacuum and other sealed-container electric switches Expired GB492189A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB784237A GB492189A (en) 1937-03-17 1937-03-17 Improvements in or relating to vacuum and other sealed-container electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB784237A GB492189A (en) 1937-03-17 1937-03-17 Improvements in or relating to vacuum and other sealed-container electric switches

Publications (1)

Publication Number Publication Date
GB492189A true GB492189A (en) 1938-09-16

Family

ID=9840819

Family Applications (1)

Application Number Title Priority Date Filing Date
GB784237A Expired GB492189A (en) 1937-03-17 1937-03-17 Improvements in or relating to vacuum and other sealed-container electric switches

Country Status (1)

Country Link
GB (1) GB492189A (en)

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