GB570622A - Improvements in thermal responsive electric switches - Google Patents

Improvements in thermal responsive electric switches

Info

Publication number
GB570622A
GB570622A GB1693943A GB1693943A GB570622A GB 570622 A GB570622 A GB 570622A GB 1693943 A GB1693943 A GB 1693943A GB 1693943 A GB1693943 A GB 1693943A GB 570622 A GB570622 A GB 570622A
Authority
GB
United Kingdom
Prior art keywords
contact
electric switches
thermal responsive
responsive electric
thermal
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
GB1693943A
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 Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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
Priority to NL137584D priority Critical patent/NL137584C/xx
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB1693943A priority patent/GB570622A/en
Publication of GB570622A publication Critical patent/GB570622A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/01—Details
    • H01H61/013—Heating arrangements for operating relays
    • H01H61/017—Heating by glow discharge or arc in confined space

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

570,622. Thermal switches. BRITISH THOMSON-HOUSTON CO., Ltd., CLARKE, M. G., and RUFF, H. R. Oct. 15, 1943, No. 16939. [Class 38 (v)] A thermal switch, particularly suitable, for controlling the preheating of the electrodes of a discharge lamp, has a contact 7 carried by a bimetal element 5 of concave or dished form which is heated by glow discharge to cause the contact to snap into engagement with a co-operating contact 6. Specifications 521,618 and 532,490 are referred to.
GB1693943A 1943-10-15 1943-10-15 Improvements in thermal responsive electric switches Expired GB570622A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL137584D NL137584C (en) 1943-10-15
GB1693943A GB570622A (en) 1943-10-15 1943-10-15 Improvements in thermal responsive electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1693943A GB570622A (en) 1943-10-15 1943-10-15 Improvements in thermal responsive electric switches

Publications (1)

Publication Number Publication Date
GB570622A true GB570622A (en) 1945-07-16

Family

ID=10086382

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1693943A Expired GB570622A (en) 1943-10-15 1943-10-15 Improvements in thermal responsive electric switches

Country Status (2)

Country Link
GB (1) GB570622A (en)
NL (1) NL137584C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930873A (en) * 1957-03-25 1960-03-29 Gen Electric Glow switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930873A (en) * 1957-03-25 1960-03-29 Gen Electric Glow switch

Also Published As

Publication number Publication date
NL137584C (en)

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