GB2382465B - Improvements relating to thermally-responsive switches - Google Patents

Improvements relating to thermally-responsive switches

Info

Publication number
GB2382465B
GB2382465B GB0127370A GB0127370A GB2382465B GB 2382465 B GB2382465 B GB 2382465B GB 0127370 A GB0127370 A GB 0127370A GB 0127370 A GB0127370 A GB 0127370A GB 2382465 B GB2382465 B GB 2382465B
Authority
GB
United Kingdom
Prior art keywords
lever
disc
switch
bimetallic disc
pip
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 - Fee Related
Application number
GB0127370A
Other versions
GB2382465A (en
GB0127370D0 (en
Inventor
Robert Andrew O'neill
Kevin Edwin John
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.)
Otter Controls Ltd
Original Assignee
Otter Controls Ltd
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 Otter Controls Ltd filed Critical Otter Controls Ltd
Priority to GB0127370A priority Critical patent/GB2382465B/en
Publication of GB0127370D0 publication Critical patent/GB0127370D0/en
Priority to PCT/GB2002/005155 priority patent/WO2003043043A1/en
Priority to DE60212435T priority patent/DE60212435T2/en
Priority to CNB028271386A priority patent/CN100440414C/en
Priority to AT02777543T priority patent/ATE330325T1/en
Priority to EP02777543A priority patent/EP1446818B8/en
Publication of GB2382465A publication Critical patent/GB2382465A/en
Application granted granted Critical
Publication of GB2382465B publication Critical patent/GB2382465B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H01H37/5427—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting encapsulated in sealed miniaturised housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H2009/307—Means for extinguishing or preventing arc between current-carrying parts with slow break, e.g. for AC current waiting for a zero crossing
    • 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
    • H01H2037/549—Details of movement transmission between bimetallic snap element and contact
    • 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

Abstract

A contact thermostatic switch has a dished, snap-acting bimetallic disc 5 cantilevered from one end of a diameter. The edge of the disc is loosely retained between a housing moulding 1 and a metal cap 6 secured to the moulding. At the other end of this diameter, the edge of the bimetallic disc engages a pip 4d on one end of a lever 4 which is pivotally-mounted in the housing at its other end. When the bimetallic disc 5 snaps to its oppositely dished configuration, it moves the pivotally-mounted lever 4 so as to determine the condition of a set of switch contacts by virtue of the end of the lever 4 which carries the pip 4d also having depending fingers 4c which abut a moving-contact carrying leaf spring 2b of the switch. The cantilevered mounting of the bimetallic disc and its interaction with the lever enables a smaller than conventional disc to be used, with consequent significant cost savings, without prejudicing the operation of the switch.
GB0127370A 2001-11-14 2001-11-14 Improvements relating to thermally-responsive switches Expired - Fee Related GB2382465B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB0127370A GB2382465B (en) 2001-11-14 2001-11-14 Improvements relating to thermally-responsive switches
AT02777543T ATE330325T1 (en) 2001-11-14 2002-11-13 IMPROVED TEMPERATURE SENSITIVE SWITCH
DE60212435T DE60212435T2 (en) 2001-11-14 2002-11-13 IMPROVED TEMPERATURE SENSITIVE SWITCH
CNB028271386A CN100440414C (en) 2001-11-14 2002-11-13 Improvements relating to thermally-responsive switches
PCT/GB2002/005155 WO2003043043A1 (en) 2001-11-14 2002-11-13 Improvements relating to thermally-responsive switches
EP02777543A EP1446818B8 (en) 2001-11-14 2002-11-13 Improvements relating to thermally-responsive switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0127370A GB2382465B (en) 2001-11-14 2001-11-14 Improvements relating to thermally-responsive switches

Publications (3)

Publication Number Publication Date
GB0127370D0 GB0127370D0 (en) 2002-01-09
GB2382465A GB2382465A (en) 2003-05-28
GB2382465B true GB2382465B (en) 2005-07-13

Family

ID=9925792

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0127370A Expired - Fee Related GB2382465B (en) 2001-11-14 2001-11-14 Improvements relating to thermally-responsive switches

Country Status (6)

Country Link
EP (1) EP1446818B8 (en)
CN (1) CN100440414C (en)
AT (1) ATE330325T1 (en)
DE (1) DE60212435T2 (en)
GB (1) GB2382465B (en)
WO (1) WO2003043043A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427946A (en) * 1945-09-20 1947-09-23 Westinghouse Electric Corp Thermostatic switch

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416116A (en) * 1960-12-19 1968-12-10 Texas Instruments Inc Thermostatic switches
US3496511A (en) * 1968-01-15 1970-02-17 Elmwood Sensors Thermostatic switch for small electrical appliances
GB1580786A (en) * 1976-04-08 1980-12-03 Otter Controls Ltd Thermostats
US4669182A (en) * 1984-01-23 1987-06-02 Therm-O-Disc, Incorporated Method of gaging a snap disc condition sensor
DE19706316C2 (en) * 1997-02-18 1999-10-21 Inter Control Koehler Hermann Thermal switching device and method for its production
GB2338110B (en) * 1998-04-14 2002-08-28 Otter Controls Ltd Improvements relating to thermal controls for electric heating elements
GB9904391D0 (en) * 1999-02-25 1999-04-21 Otter Controls Ltd Improvements relating to thermal controls

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427946A (en) * 1945-09-20 1947-09-23 Westinghouse Electric Corp Thermostatic switch

Also Published As

Publication number Publication date
ATE330325T1 (en) 2006-07-15
CN100440414C (en) 2008-12-03
WO2003043043A1 (en) 2003-05-22
EP1446818A1 (en) 2004-08-18
GB2382465A (en) 2003-05-28
DE60212435D1 (en) 2006-07-27
EP1446818B8 (en) 2006-07-19
DE60212435T2 (en) 2007-02-01
GB0127370D0 (en) 2002-01-09
CN1615533A (en) 2005-05-11
EP1446818B1 (en) 2006-06-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20091114