GB959324A - Improvements in thermally actuated cycling switch - Google Patents

Improvements in thermally actuated cycling switch

Info

Publication number
GB959324A
GB959324A GB2661761A GB2661761A GB959324A GB 959324 A GB959324 A GB 959324A GB 2661761 A GB2661761 A GB 2661761A GB 2661761 A GB2661761 A GB 2661761A GB 959324 A GB959324 A GB 959324A
Authority
GB
United Kingdom
Prior art keywords
bimetal
contact
switch
arm
cam
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
GB2661761A
Inventor
Henry Frank Hild
Siegfried Emil Manecke
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.)
Robertshaw Controls Co
Original Assignee
Robertshaw Fulton Controls Co
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 Robertshaw Fulton Controls Co filed Critical Robertshaw Fulton Controls Co
Publication of GB959324A publication Critical patent/GB959324A/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
    • H01H37/64—Contacts
    • H01H37/66—Magnetic reinforcement of contact pressure; Magnet causing snap action
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • H01H2001/545—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force having permanent magnets directly associated with the contacts

Landscapes

  • Thermally Actuated Switches (AREA)

Abstract

959,324. Thermal switches; cam-operated switches. ROBERTSHAW-FULTON CONTROLS CO. July 21, 1961, No. 26617/61. Heading H2B. A cycling switch comprises a pivoted bimetal 63 with an offset portion 70 engaging on elongated slot 86 in the free end of a resilient switch contact-carrying arm 88, a heating coil surrounding the bimetal which latter is secured at its pivot 34 to a compensating bimetal 62, means for adjusting the initial position of the pivoting bimetal assembly via an abutment member 56, and a permanent magnet 102 and armature 92 providing snap opening and closing of switch contacts 94, 96. A control cam 32 is rotatable by hand in either direction to alter the position of an adjusting member 50, spring-biased towards a cam surface 42, and thus to adjust abutment member 56. A second cam surface 110 actuates a resilient contact arm 112 between switch contacts 120, 122 and a pilot light contact 124. Contact pairs 94, 96 and 120, 122 are in circuit respectively on either side of a power source supplying energy to a controlled heating element (not shown), and the bimetal heating coil is connected across the controlled heating element to contacts 94, 122 by leads 84. In an embodiment the actuating bimetal 63 moves an arm a short distance to strike the switch contact-carrying arm, thereby breaking contact welds (Figs. 7, 8, not shown).
GB2661761A 1961-08-09 1961-07-21 Improvements in thermally actuated cycling switch Expired GB959324A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH937661A CH398748A (en) 1961-08-09 1961-08-09 Thermally operated pendulum switch

Publications (1)

Publication Number Publication Date
GB959324A true GB959324A (en) 1964-05-27

Family

ID=4351343

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2661761A Expired GB959324A (en) 1961-08-09 1961-07-21 Improvements in thermally actuated cycling switch

Country Status (2)

Country Link
CH (1) CH398748A (en)
GB (1) GB959324A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1855301A1 (en) * 2006-05-11 2007-11-14 Aire-IT Regeltechnik GmbH Room temperature regulator with guide rail and magnetic grab system for room temperature regulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1855301A1 (en) * 2006-05-11 2007-11-14 Aire-IT Regeltechnik GmbH Room temperature regulator with guide rail and magnetic grab system for room temperature regulator

Also Published As

Publication number Publication date
CH398748A (en) 1966-03-15

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