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EP1033732A3 - Switch with security welding - Google Patents

Switch with security welding Download PDF

Info

Publication number
EP1033732A3
EP1033732A3 EP99124508A EP99124508A EP1033732A3 EP 1033732 A3 EP1033732 A3 EP 1033732A3 EP 99124508 A EP99124508 A EP 99124508A EP 99124508 A EP99124508 A EP 99124508A EP 1033732 A3 EP1033732 A3 EP 1033732A3
Authority
EP
European Patent Office
Prior art keywords
contact
switch
pad
bimetallic element
security
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.)
Granted
Application number
EP99124508A
Other languages
German (de)
French (fr)
Other versions
EP1033732A2 (en
EP1033732B1 (en
Inventor
Marcel Hofsäss
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 EP1033732A2 publication Critical patent/EP1033732A2/en
Publication of EP1033732A3 publication Critical patent/EP1033732A3/en
Application granted granted Critical
Publication of EP1033732B1 publication Critical patent/EP1033732B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • H01H2001/506—Fail safe contacts, i.e. the contacts being kept in a safe position, usually in an open circuit position, at end of life time of switch
    • 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
    • H01H2037/5463—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting the bimetallic snap element forming part of switched circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
  • Push-Button Switches (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

The switch has a fixed contact pad (26) that is engaged by a movable contact (25) on the tip of a bimetallic element (23). Bimetallic element is coupled to a leaf spring (17). Contact between pad (26) and contact (25) is opened if too high ambient temperature or due to current flow. At the end of its operational life, arcing which occurs as contact opens welds movable contact in the open position.
EP99124508A 1999-03-02 1999-12-09 Switch with security welding Expired - Lifetime EP1033732B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19909059A DE19909059C2 (en) 1999-03-02 1999-03-02 Switch with welding protection
DE19909059 1999-03-02

Publications (3)

Publication Number Publication Date
EP1033732A2 EP1033732A2 (en) 2000-09-06
EP1033732A3 true EP1033732A3 (en) 2002-06-19
EP1033732B1 EP1033732B1 (en) 2004-06-09

Family

ID=7899409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99124508A Expired - Lifetime EP1033732B1 (en) 1999-03-02 1999-12-09 Switch with security welding

Country Status (6)

Country Link
US (1) US6448883B1 (en)
EP (1) EP1033732B1 (en)
AT (1) ATE268937T1 (en)
DE (2) DE19909059C2 (en)
ES (1) ES2221294T3 (en)
PT (1) PT1033732E (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3828476B2 (en) * 2002-10-15 2006-10-04 株式会社センサータ・テクノロジーズジャパン Non-energized sealed motor protector
US8754773B1 (en) * 2004-02-21 2014-06-17 Lee Von Gunten Device for simulating human activity in an unoccupied dwelling
DE102009030353B3 (en) * 2009-06-22 2010-12-02 Hofsaess, Marcel P. Cap for a temperature-dependent switch and method for producing a temperature-dependent switch
DE102009039948A1 (en) * 2009-08-27 2011-03-03 Hofsaess, Marcel P. Temperature-dependent switch
CN103560048A (en) * 2013-11-20 2014-02-05 威海双丰韩柏温度智能控制有限公司 Double-contact temperature controller
WO2019230751A1 (en) * 2018-05-30 2019-12-05 ボーンズ株式会社 Breaker, safety circuit, and secondary battery pack
KR102469819B1 (en) * 2018-11-12 2022-11-21 주식회사 엘지에너지솔루션 A battery pack configured to prevent overcharge and A vehicle comprising the same
US12224145B2 (en) * 2021-09-24 2025-02-11 Littelfuse, Japan G.K. Protection device
DE102023102301B3 (en) 2023-01-31 2024-03-28 Marcel P. HOFSAESS Temperature-dependent switch and method for producing the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4399423A (en) * 1982-03-29 1983-08-16 Texas Instruments Incorporated Miniature electric circuit protector
JPH07220595A (en) * 1994-02-01 1995-08-18 Ubukata Seisakusho:Kk Thermal protector
EP0828273A2 (en) * 1996-09-10 1998-03-11 Marcel Peter Hofsäss Switch with a safety element
EP0938116A2 (en) * 1998-02-23 1999-08-25 Marcel Hofsäss Switch

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2139921A (en) * 1938-06-07 1938-12-13 Chace Co W M Snap acting thermostat
US3443259A (en) * 1967-05-16 1969-05-06 Portage Electric Prod Inc Creepless snap-acting thermostatic switch
US3959762A (en) * 1974-12-09 1976-05-25 Texas Instruments Incorporated Thermally responsive electrical switch
EP0000807B1 (en) * 1977-07-13 1982-01-06 Ranco Incorporated Snap-acting switch device in combination with an auxiliary switch
JPS54150678A (en) * 1978-05-19 1979-11-27 Tetsuo Takano Square electric contact
US4389630A (en) * 1980-03-15 1983-06-21 Susumu Ubukatu Snap action thermally responsive switch
US4363016A (en) * 1981-06-03 1982-12-07 Amf Incorporated Circuit breaker
US4636766A (en) * 1983-09-19 1987-01-13 Gte Products Corporation Miniaturized circuit breaker
US4620175A (en) * 1985-10-11 1986-10-28 North American Philips Corporation Simple thermostat for dip mounting
JPH01120719A (en) * 1987-11-04 1989-05-12 Nec Corp Conducting liquid contact switch
JPH05282977A (en) * 1992-03-30 1993-10-29 Texas Instr Japan Ltd Overcurrent protecting device
US5781097A (en) * 1996-03-01 1998-07-14 Portage Electric Products, Inc. Dual calibration thermostatic switch having a wide operating range
US6191680B1 (en) * 1998-02-23 2001-02-20 HOFSäSS MARCEL Switch having a safety element
US6097274A (en) * 1998-02-23 2000-08-01 Hofsaess; Marcel Switch having a temperature-dependent switching member and a substantially temperature-independent spring element
DE19816809C2 (en) * 1998-04-16 2001-10-18 Thermik Geraetebau Gmbh Temperature-dependent switch
DE19816807C2 (en) * 1998-04-16 2000-06-08 Thermik Geraetebau Gmbh Temperature-dependent switch
DE19847208C2 (en) * 1998-10-13 2002-05-16 Marcel Hofsaes Switch with an insulating carrier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4399423A (en) * 1982-03-29 1983-08-16 Texas Instruments Incorporated Miniature electric circuit protector
JPH07220595A (en) * 1994-02-01 1995-08-18 Ubukata Seisakusho:Kk Thermal protector
EP0828273A2 (en) * 1996-09-10 1998-03-11 Marcel Peter Hofsäss Switch with a safety element
EP0938116A2 (en) * 1998-02-23 1999-08-25 Marcel Hofsäss Switch

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 11 26 December 1995 (1995-12-26) *

Also Published As

Publication number Publication date
ATE268937T1 (en) 2004-06-15
US6448883B1 (en) 2002-09-10
PT1033732E (en) 2004-10-29
EP1033732A2 (en) 2000-09-06
ES2221294T3 (en) 2004-12-16
EP1033732B1 (en) 2004-06-09
DE19909059C2 (en) 2003-10-16
DE59909688D1 (en) 2004-07-15
DE19909059A1 (en) 2000-09-21

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