GB1241220A - Thermally responsive, electric cut-out device - Google Patents

Thermally responsive, electric cut-out device

Info

Publication number
GB1241220A
GB1241220A GB51536/68A GB5153668A GB1241220A GB 1241220 A GB1241220 A GB 1241220A GB 51536/68 A GB51536/68 A GB 51536/68A GB 5153668 A GB5153668 A GB 5153668A GB 1241220 A GB1241220 A GB 1241220A
Authority
GB
United Kingdom
Prior art keywords
thermally responsive
oct
operate
electric cut
out device
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
GB51536/68A
Inventor
E Shaw
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.)
GTE Sylvania Inc
Original Assignee
GTE Sylvania Inc
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 GTE Sylvania Inc filed Critical GTE Sylvania Inc
Publication of GB1241220A publication Critical patent/GB1241220A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H37/5409—Bistable switches; Resetting means

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

1,241,220. Thermal switches; automatic circuit-breakers. SYLVANIA ELECTRIC PRODUCTS Inc. 30 Oct., 1968 [30 Oct., 1967], No. 51536/68. Heading H1N. In a thermally responsive electric cut-out a spring contact arm 4, Fig. 1, is restrained in electrical contact with a latch member 3 mounted on the end of a dished bi-metal element 1 which snaps over at a predetermined temperature to release the latch. The arrangement may be manually reset or may be in a hermetically sealed glass envelope 7 so that it can function only once. The device may be mounted in the casing of a fluorescent lamp ballast to operate at excess temperature when the ballast reaches the end of its useful life. The device may also operate as the result of a current overload.
GB51536/68A 1967-10-30 1968-10-30 Thermally responsive, electric cut-out device Expired GB1241220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67900367A 1967-10-30 1967-10-30

Publications (1)

Publication Number Publication Date
GB1241220A true GB1241220A (en) 1971-08-04

Family

ID=24725194

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51536/68A Expired GB1241220A (en) 1967-10-30 1968-10-30 Thermally responsive, electric cut-out device

Country Status (2)

Country Link
US (1) US3573696A (en)
GB (1) GB1241220A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743977A (en) * 1972-04-27 1973-07-03 Bell Telephone Labor Inc Latching switch
US3761855A (en) * 1972-04-27 1973-09-25 Bell Telephone Labor Inc Latching switch
US6704166B1 (en) * 2000-08-04 2004-03-09 Maxtor Corporation Coated latch mechanism for disk drive

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE670790C (en) * 1936-09-23 1939-01-25 Stotz Kontakt Gmbh Thermal self-switch
US2207160A (en) * 1938-05-18 1940-07-09 Rivers Kathryn Overload switch
US2491032A (en) * 1947-02-28 1949-12-13 John T Collins Circuit protector
GB845309A (en) * 1957-07-09 1960-08-17 Gen Electric Co Ltd Improvements in or relating to electric thermal cut-outs
US3278705A (en) * 1964-03-26 1966-10-11 Sylvania Electric Prod Thermostatic switch
GB1148207A (en) * 1966-11-11 1969-04-10 Belling & Lee Ltd Improvements in or relating to bi-metal devices

Also Published As

Publication number Publication date
US3573696A (en) 1971-04-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]