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GB2252674B - Improvements relating to thermally responsive electric switches - Google Patents

Improvements relating to thermally responsive electric switches

Info

Publication number
GB2252674B
GB2252674B GB9200152A GB9200152A GB2252674B GB 2252674 B GB2252674 B GB 2252674B GB 9200152 A GB9200152 A GB 9200152A GB 9200152 A GB9200152 A GB 9200152A GB 2252674 B GB2252674 B GB 2252674B
Authority
GB
United Kingdom
Prior art keywords
improvements relating
thermally responsive
electric switches
responsive electric
switches
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
GB9200152A
Other versions
GB9200152D0 (en
GB2252674A (en
Inventor
Paul Boundy
Christopher Laurenc Partington
Mark Arthur Seddon
Adrian Mark Johnston
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
Priority claimed from GB919100186A external-priority patent/GB9100186D0/en
Application filed by Otter Controls Ltd filed Critical Otter Controls Ltd
Priority to GB9200152A priority Critical patent/GB2252674B/en
Publication of GB9200152D0 publication Critical patent/GB9200152D0/en
Publication of GB2252674A publication Critical patent/GB2252674A/en
Application granted granted Critical
Publication of GB2252674B publication Critical patent/GB2252674B/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
    • 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
    • H01H1/504—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by thermal means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/04—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrothermal opening
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
    • 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
    • H01H2037/5481—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting the bimetallic snap element being mounted on the contact spring
    • 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
    • H01H37/5409—Bistable switches; Resetting means

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
GB9200152A 1991-01-04 1992-01-06 Improvements relating to thermally responsive electric switches Expired - Fee Related GB2252674B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9200152A GB2252674B (en) 1991-01-04 1992-01-06 Improvements relating to thermally responsive electric switches

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919100186A GB9100186D0 (en) 1991-01-04 1991-01-04 Improvements relating to thermally responsive electric switches
GB9200152A GB2252674B (en) 1991-01-04 1992-01-06 Improvements relating to thermally responsive electric switches

Publications (3)

Publication Number Publication Date
GB9200152D0 GB9200152D0 (en) 1992-02-26
GB2252674A GB2252674A (en) 1992-08-12
GB2252674B true GB2252674B (en) 1995-01-04

Family

ID=26298216

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9200152A Expired - Fee Related GB2252674B (en) 1991-01-04 1992-01-06 Improvements relating to thermally responsive electric switches

Country Status (1)

Country Link
GB (1) GB2252674B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3691059B2 (en) * 1993-08-03 2005-08-31 オッター コントロールズ リミテッド Improvements related to electrical switches
GB2339088B (en) * 1998-04-21 2002-07-24 Otter Controls Ltd Improvements relating to the control of electric heating elements
GB2372159B (en) * 1998-04-21 2002-10-16 Otter Controls Ltd Improvements relating to the control of electric heating elements
US7326887B1 (en) 2006-12-13 2008-02-05 Sensata Technologies, Inc. Modified reset motor protector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102574A2 (en) * 1982-08-21 1984-03-14 Limitor AG Bimetallic protection switch
US4580123A (en) * 1983-01-15 1986-04-01 Fritz Eichenauer Gmbh & Co. Kg Thermal protective switch
DE8617033U1 (en) * 1986-06-26 1986-08-14 Temtech-Temperatur-Technik Hans-Peter Bojer, 7530 Pforzheim Bimetal switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102574A2 (en) * 1982-08-21 1984-03-14 Limitor AG Bimetallic protection switch
US4580123A (en) * 1983-01-15 1986-04-01 Fritz Eichenauer Gmbh & Co. Kg Thermal protective switch
DE8617033U1 (en) * 1986-06-26 1986-08-14 Temtech-Temperatur-Technik Hans-Peter Bojer, 7530 Pforzheim Bimetal switch

Also Published As

Publication number Publication date
GB9200152D0 (en) 1992-02-26
GB2252674A (en) 1992-08-12

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Legal Events

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

Effective date: 20090106