GB1032870A - Thermally responsive snap-acting electrical switches - Google Patents

Thermally responsive snap-acting electrical switches

Info

Publication number
GB1032870A
GB1032870A GB48959/62A GB4895962A GB1032870A GB 1032870 A GB1032870 A GB 1032870A GB 48959/62 A GB48959/62 A GB 48959/62A GB 4895962 A GB4895962 A GB 4895962A GB 1032870 A GB1032870 A GB 1032870A
Authority
GB
United Kingdom
Prior art keywords
housing
thermal
snap
thermal element
acting
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
GB48959/62A
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments 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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of GB1032870A publication Critical patent/GB1032870A/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
    • 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
    • H01H2037/5445—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting with measures for avoiding slow break of contacts during the creep phase of the snap bimetal
    • 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
    • H01H2037/5463—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting the bimetallic snap element forming part of switched circuit

Landscapes

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

Abstract

1,032,870. Thermal switches. TEXAS INSTRUMENTS Inc. Dec. 28, 1962 [Nov. 30; 1962], No. 48959/62. Heading H2B A thermal switch 10 comprises a cup-shaped conductive housing 12, a conductive spring 14 biasing a snap-acting thermal element 16 against a stop 48 provided by a flanged metallic ring 22, and a fixed contact member 30 insulated from the housing 12 and having a contact portion 32 engageable by a movable contact 18 carried by thermal element 16. Factory calibration of the switch comprises positioning contact member 30 of silver alloy in a metal tube 26 of nickel-iron alloy which is then crimped at 34 and welded at 36 after being sealed, using a glass sealant 24, into steel ring 22. The glassto-metal hermetic seal is of matched seal construction or a compression seal. The thermal element 16 is an inherently snap-acting bimetal and the spring 14 is a beryllium-copper washer of undulated shape (Figs. 6, 7, not shown). The stop or abutment part 48<SP>1</SP> of the flanged metal ring 22<SP>1</SP> may be bevelled (Fig. 8, not shown). Housing 12 and terminal tab 44 are of steel and are gold-plated to improve conductivity.
GB48959/62A 1962-11-30 1962-12-28 Thermally responsive snap-acting electrical switches Expired GB1032870A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US24134962A 1962-11-30 1962-11-30
US502807A US3352986A (en) 1962-11-30 1965-10-06 Vibration resistant construction for thermally responsive electrical switches

Publications (1)

Publication Number Publication Date
GB1032870A true GB1032870A (en) 1966-06-15

Family

ID=26934221

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48959/62A Expired GB1032870A (en) 1962-11-30 1962-12-28 Thermally responsive snap-acting electrical switches

Country Status (4)

Country Link
US (1) US3352986A (en)
DE (1) DE1490749B1 (en)
GB (1) GB1032870A (en)
NL (1) NL287423A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3114256A1 (en) * 1980-04-09 1982-03-25 Aisin Seiki K.K., Kariya, Aichi "SWITCH APPROACHING TEMPERATURE"

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617974A (en) * 1969-11-25 1971-11-02 Aloysius Joseph Kochanski Electrical switching means
IT1179473B (en) * 1984-10-24 1987-09-16 Texas Instruments Italia Spa SINGLE-TEMPERATURE THERMOSTAT WITH BIMETALLIC ELEMENT
US8413590B2 (en) * 2008-09-23 2013-04-09 A. Stucki Co. Center bowl liner with spring washer conductor
US8082855B2 (en) * 2008-09-23 2011-12-27 A. Stucki Co. Center bowl liner with spring washer conductor
DE102019132433B4 (en) * 2019-11-29 2021-08-12 Marcel P. HOFSAESS Temperature dependent switch and process for its manufacture

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1798854A (en) * 1926-11-25 1931-03-31 Satchwell Leonard Thermostat
US2239541A (en) * 1938-11-23 1941-04-22 Metals & Controls Corp Temperature responsive apparatus
US2508510A (en) * 1946-07-15 1950-05-23 Gillespie Frank Attachment for railroad car journal boxes
US2617909A (en) * 1950-11-01 1952-11-11 Pierce John B Foundation Circuit breaker assembly
US2811611A (en) * 1956-04-17 1957-10-29 Odenwald Alfred Small-type thermostat for preventing overheating in electrical apparatus
US2839635A (en) * 1956-11-01 1958-06-17 Cook Electric Co Lightning arresters
US2863024A (en) * 1957-04-18 1958-12-02 Lee W Romine Signal connecting bolt
US2978879A (en) * 1958-06-30 1961-04-11 Gen Motors Corp Refrigerating apparatus
US3023350A (en) * 1959-03-31 1962-02-27 Texas Instruments Inc Electrical switch means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3114256A1 (en) * 1980-04-09 1982-03-25 Aisin Seiki K.K., Kariya, Aichi "SWITCH APPROACHING TEMPERATURE"

Also Published As

Publication number Publication date
DE1490749B1 (en) 1970-08-20
US3352986A (en) 1967-11-14
NL287423A (en)

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