GB1288160A - - Google Patents

Info

Publication number
GB1288160A
GB1288160A GB1720270A GB1720270A GB1288160A GB 1288160 A GB1288160 A GB 1288160A GB 1720270 A GB1720270 A GB 1720270A GB 1720270 A GB1720270 A GB 1720270A GB 1288160 A GB1288160 A GB 1288160A
Authority
GB
United Kingdom
Prior art keywords
strip
die
radii
deformations
punch
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
GB1720270A
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 filed Critical
Publication of GB1288160A publication Critical patent/GB1288160A/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
    • H01H37/5418—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting using cantilevered bimetallic snap elements
    • 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

Landscapes

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

Abstract

1288160 Stamping TEXAS INSTRUMENTS Inc 10 April 1970 [28 April 1969] 17202/70 Heading B3Q [Also in Divisions G1 and H1] A snap acting thermally responsive element comprises a thermally responsive strip 10<SP>1</SP> having a dished surface portion 14 and a plurality of deformations 25a<SP>1</SP>, 25b<SP>1</SP>, 27a<SP>1</SP>, 27b<SP>1</SP> formed in the strip. The strip which may comprise a plurality of metallic layers may form part of a snap action switch by being screwed at one end 12 to an electrically insulating base 15 and provided with an electric contact for co-operation with an electric contact 18 on the base 15. The element may be formed by inserting a flat strip between a forming die 20 provided with a convex-upper surface defined by different radii 31, 33 and with a plurality of parallel bores 24, 26, 28 and a punch 22 having a concave lower surface defined by radii 30, 32 matching the radii 31, 33 of the die, the strip then being acted upon by the punch and die to deform the strip thereby forming the deformations 25a<SP>1</SP>, 25b<SP>1</SP>, 27a<SP>1</SP>, 27b<SP>1</SP> and ridges 34-39.
GB1720270A 1969-04-28 1970-04-10 Expired GB1288160A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81986869A 1969-04-28 1969-04-28

Publications (1)

Publication Number Publication Date
GB1288160A true GB1288160A (en) 1972-09-06

Family

ID=32230723

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1720270A Expired GB1288160A (en) 1969-04-28 1970-04-10

Country Status (6)

Country Link
US (1) US3562690A (en)
JP (1) JPS5012788B1 (en)
CA (1) CA933903A (en)
FR (1) FR2040291A1 (en)
GB (1) GB1288160A (en)
NL (1) NL161611C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145567A (en) * 1983-08-25 1985-03-27 Butler Howard Ltd Bimetallic element for temperature sensitive switch
GB2203245A (en) * 1987-03-24 1988-10-12 Ymos Ag Ind Produkte A bimetallic circuit element for a lock

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4220938A (en) * 1979-02-12 1980-09-02 Emerson Electric Co. Thermostatic electrical switch
EP3073506B1 (en) * 2013-10-28 2018-04-04 Ubukata Industries Co., Ltd. Thermally actuated switch and molding die

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145567A (en) * 1983-08-25 1985-03-27 Butler Howard Ltd Bimetallic element for temperature sensitive switch
GB2203245A (en) * 1987-03-24 1988-10-12 Ymos Ag Ind Produkte A bimetallic circuit element for a lock
GB2203245B (en) * 1987-03-24 1991-10-02 Ymos Ag Ind Produkte A bimetallic circuit element and a lock incorporating such an element

Also Published As

Publication number Publication date
CA933903A (en) 1973-09-18
NL7005890A (en) 1970-10-30
US3562690A (en) 1971-02-09
DE2020025B2 (en) 1972-11-16
FR2040291A1 (en) 1971-01-22
DE2020025A1 (en) 1971-01-21
JPS5012788B1 (en) 1975-05-14
NL161611C (en) 1980-02-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee