EP 0921543 A1 19990609 - Electric safety switch
Title (en)
Electric safety switch
Title (de)
Elektrischer Sicherheitsschalter
Title (fr)
Interrupteur de sécurité
Publication
Application
Priority
EP 97830615 A 19971121
Abstract (en)
A switch (1) is described herein comprising a primary switch operator (2) and an auxiliary switch operator (11) which are operatively and simultaneously opened and closed by a push-button (7). The contacts of the switch operators (2,11) are set to make the auxiliary switch operator (11) close and open in advance of the closure and the opening of the primary switch operator (2). The switch (1) is fitted with locking appendices and locking seats (16a, 16b) which operate an arrest of the push-button (7) when the primary switch operator (2) remains welded in closure. This allows the user immediately to detect the origin of the malfunction of the electrical circuit (3). <IMAGE>
IPC 1-7
IPC 8 full level
H01H 3/00 (2006.01)
CPC (source: EP)
H01H 3/001 (2013.01)
Citation (search report)
- [X] EP 0146034 A2 19850626 - SIEMENS AG [DE]
- [X] DE 3706003 A1 19880908 - HENGSTLER BAUELEMENTE [DE]
- [X] US 4149052 A 19790410 - PIBER EARL T
- [X] DE 7525950 U 19751204
- [X] DE 9402045 U1 19940505 - ELAN SCHALTELEMENTE GMBH [DE]
- [AD] US 5304753 A 19940419 - PARRISH TIMOTHY L [US], et al
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 97830615 A 19971121; CN 98122542 A 19981120