GB975673A - Snap action device - Google Patents

Snap action device

Info

Publication number
GB975673A
GB975673A GB2840261A GB2840261A GB975673A GB 975673 A GB975673 A GB 975673A GB 2840261 A GB2840261 A GB 2840261A GB 2840261 A GB2840261 A GB 2840261A GB 975673 A GB975673 A GB 975673A
Authority
GB
United Kingdom
Prior art keywords
vane
strip
snap
natural curvature
curvature
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
GB2840261A
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.)
Tung Sol Electric Inc
Original Assignee
Tung Sol Electric 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 Tung Sol Electric Inc filed Critical Tung Sol Electric Inc
Publication of GB975673A publication Critical patent/GB975673A/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
    • H01H61/06—Self-interrupters, i.e. with periodic or other repetitive opening and closing of contacts
    • H01H61/066—Self-interrupters, i.e. with periodic or other repetitive opening and closing of contacts making use of an extensible wire, rod or strips
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/60—Means for producing snap action

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Thermally Actuated Switches (AREA)

Abstract

975,673. Thermal switches; snap-action switches. TUNG-SOL ELECTRIC Inc. Aug. 4, 1961 [Dec. 20, 1960], No. 28402/61. Heading H2B. A snap action switching device comprises a rectangular vane 10 of resilient conductive material given a natural curvature about a longitudinal axis, a pull strip 4 being secured under tension to diagonally opposite corners 16, 18 to bow the vane away from its natural curvature when the strip is cold and to allow the vane, when the strip is heated, to snap towards its natural curvature bringing about one half of the length of the pull strip into heat conductive engagement with the vane. The pull strip 14 carries a contact 20 which in the cold condition engages a fixed contact 22. The curvature of the vane may be introduced by a crease 12 or by bosses or ribs 28 stamped in the vane. The vane may have an aperture 30 at its centre and strengthening ribs 32 (Fig. 6).
GB2840261A 1960-12-20 1961-08-04 Snap action device Expired GB975673A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7715560A 1960-12-20 1960-12-20

Publications (1)

Publication Number Publication Date
GB975673A true GB975673A (en) 1964-11-18

Family

ID=22136381

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2840261A Expired GB975673A (en) 1960-12-20 1961-08-04 Snap action device

Country Status (2)

Country Link
DE (1) DE1218315B (en)
GB (1) GB975673A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2904105A1 (en) * 1978-02-16 1979-08-23 Technar Inc THERMAL SWITCHING DEVICE

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE24023E (en) * 1951-07-21 1955-06-14 Schmidinger
US2712044A (en) * 1953-08-18 1955-06-28 Signal Stat Corp Circuit breaker
US2712045A (en) * 1953-08-18 1955-06-28 Signal Stat Corp Snap action vane
US2706227A (en) * 1953-08-18 1955-04-12 Signal Stat Corp Snap action vane
DE1066109B (en) * 1956-06-06 1959-09-24 Signal-Stat Corporation Brooklyn, N Y (V St A) Thermostatically actuated blooming device
DE1049280B (en) * 1957-08-23 1959-01-22 Westfälische Metall Industrie G m b H Lippstadt Lippstadt Flashers testify especially for signaling in motor vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2904105A1 (en) * 1978-02-16 1979-08-23 Technar Inc THERMAL SWITCHING DEVICE

Also Published As

Publication number Publication date
DE1218315B (en) 1966-06-02

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