Global patent index - EP 1072048 A1

EP 1072048 A1 2001-01-31 - IMPROVEMENTS RELATING TO THERMAL CONTROLS FOR ELECTRIC HEATING ELEMENTS

Title (en)

IMPROVEMENTS RELATING TO THERMAL CONTROLS FOR ELECTRIC HEATING ELEMENTS

Title (de)

VERBESSERUNG BEZÜGLICH EINER TEMPERATURREGELUNG FÜR ELEKTRISCHE HEIZELEMENTE

Title (fr)

AMELIORATIONS RELATIVES AUX COMMANDES DE TEMPERATURE D'ELEMENTS CHAUFFANTS ELECTRIQUES

Publication

EP 1072048 A1 (EN)

Application

EP 99915934 A

Priority

  • GB 9901132 W
  • GB 9807924 A

Abstract (en)

[origin: WO9953513A1] A contactstat thermal sensor comprises a snap acting disk bimetal housed under a thermally conductive end cap fitted to a sensor body and operating a set of primary switch contacts via a push rod. For providing secondary protection, operable in the event that the primary protection afforded by the bimetal fails to operate, the moving contact of the primary switch contacts is provided at one end of a spring metal beam and the other end of the beam is held down, against its spring bias, in electrical contact with a terminal part of the sensor by means of a fusible rod arranged to melt and release the spring metal beam, thereby disrupting the electrical path through the sensor, in the event that the fusible rod is subjected to a temperature above the normal operating temperature of the bimetal.

IPC 1-7 (main, further and additional classification)

H01H 37/00

IPC 8 full level (invention and additional information)

H01H 37/00 (2006.01)

CPC (invention and additional information)

H01H 37/002 (2013.01)

Citation (search report)

See references of WO 9953513A1

Designated contracting state (EPC)

DE FR IT NL

EPO simple patent family

WO 9953513 A1 19991021; AU 3435499 A 19991101; CN 1134807 C 20040114; CN 1304539 A 20010718; DE 69928517 D1 20051229; DE 69928517 T2 20060810; DE 69934338 D1 20070118; DE 69934338 T2 20070628; EP 1072048 A1 20010131; EP 1072048 B1 20051123; EP 1517346 A1 20050323; EP 1517346 B1 20061206; GB 0216281 D0 20020821; GB 2338110 A 19991208; GB 2338110 B 20020828; GB 2373926 A 20021002; GB 2373926 B 20021113; GB 9807924 D0 19980610

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