EP 0165731 A3 19880518 - IMPROVEMENTS IN ELECTRICAL SWITCHES
Title (en)
IMPROVEMENTS IN ELECTRICAL SWITCHES
Publication
Application
Priority
GB 8413912 A 19840531
Abstract (en)
[origin: EP0165731A2] An electrical switch for protecting equipment from oerheating has a bimetallic element (16) which breaks electrical contact at a threshold temperature and a resetting member (40) which restores it when depressed manually. A bistable, over-centre contact member (24) is arranged such that initial movement of the resetting member moves the contact member over-centre, but also displaces the contact member, leaving the electrical contacts disengaged. Electrical contact is only restored on release of the resetting member. In this way the risks of manual tampering with the switch are reduced.
IPC 1-7
IPC 8 full level
H01H 13/36 (2006.01); H01H 37/54 (2006.01); H01H 37/60 (2006.01)
CPC (source: EP)
H01H 13/36 (2013.01); H01H 37/5409 (2013.01); H01H 37/60 (2013.01); H01H 2037/705 (2013.01)
Citation (search report)
- [X] DE 2824272 B1 19790913 - LANDIS & GYR AG
- [XP] US 4480246 A 19841030 - SCHMITT DONALD J [US]
- [A] DE 1615217 A1 19700527 - DREEFS E ELEKTRO FAB
- [A] US 3924213 A 19751202 - SEMPLE ALEXANDER MACGREGOR
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0165731 A2 19851227; EP 0165731 A3 19880518; GB 8413912 D0 19840704
DOCDB simple family (application)
EP 85303808 A 19850530; GB 8413912 A 19840531