GB899725A - Improvements in or relating to temperature sensitive actuating members - Google Patents

Improvements in or relating to temperature sensitive actuating members

Info

Publication number
GB899725A
GB899725A GB3205259A GB3205259A GB899725A GB 899725 A GB899725 A GB 899725A GB 3205259 A GB3205259 A GB 3205259A GB 3205259 A GB3205259 A GB 3205259A GB 899725 A GB899725 A GB 899725A
Authority
GB
United Kingdom
Prior art keywords
frame
tube
members
expansion
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
GB3205259A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB899725A publication Critical patent/GB899725A/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
    • H01H37/46—Thermally-sensitive members actuated due to expansion or contraction of a solid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/02—Electrothermal relays wherein the thermally-sensitive member is heated indirectly, e.g. resistively, inductively

Abstract

899,725. Thermal switches. VENTREX ROOFING Ltd. Sept. 21, 1959 [Nov. 24, 1958], No. 32052/59. Class 38 (5). [Also in Group XIII] A thermally-deformable frame 1 is formed by two members joined at their ends by rivets 3 through spacing members 2 and these ends are connected by a tensioning member, comprising a wire rod, e.g. profiled or flat or, as shown, a tube 4c, having the same coefficient of expansion as the frame 1 and two strips 4a of higher or lower expansion which are each secured by a rivet 4d at one end to one end of the tube 4c and at the other end secured to the far end of the tube 4c. If the strips 4a are of low expansion material, thermal expansion of the tube 4c (which may be heated by an electric resistance, Figs. 3, 4, not shown), with or without expansion of the frame 1, causes the ends of the frame to be moved nearer to one another and bends 1c in the respective frame members to move apart. As shown, the frame is pivoted at 11 on a U-shaped support 10 and bears against an upper adjustable abutment 13a so that the relative movement of the bends 1c operates snap-acting contacts 8 through an insulating pin 13b. The tube 4c may be formed in two halves joined by rivets 4f, Fig. 2, or by adhesive. There are apertures 1b in the frame members to reduce the thermal inertia and these members have edge flanges 1a.
GB3205259A 1958-09-24 1959-09-21 Improvements in or relating to temperature sensitive actuating members Expired GB899725A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE0016472 1958-09-24

Publications (1)

Publication Number Publication Date
GB899725A true GB899725A (en) 1962-06-27

Family

ID=7069285

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3205259A Expired GB899725A (en) 1958-09-24 1959-09-21 Improvements in or relating to temperature sensitive actuating members

Country Status (1)

Country Link
GB (1) GB899725A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3220738A1 (en) * 1980-10-31 1983-12-08 William A. 91105 Pasadena Calif. Ray Thermally operated switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3220738A1 (en) * 1980-10-31 1983-12-08 William A. 91105 Pasadena Calif. Ray Thermally operated switch
GB2122812A (en) * 1980-10-31 1984-01-18 William Alton Ray Thermally actuated switch

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