EP 0977228 A3 20000920 - Key-controlled electromechanical safety switch with electromagnetic controlled blocking device
Title (en)
Key-controlled electromechanical safety switch with electromagnetic controlled blocking device
Title (de)
Elektromechanischer Schlüsselsicherheitsschalter mit elektromagnetischer Sperrvorrichtung
Title (fr)
Interrupteur électromécanique de sécurité à clé avec dispositif de verrouillage électromagnétique
Publication
Application
Priority
IT VI980141 A 19980727
Abstract (en)
[origin: EP0977228A2] A key-controlled electromechanical safety switch, in particular for machines or plants, which comprises a case (2) containing pairs of electric contacts (3,3'; 4,4') operatively coupled to a shank (10) slidable along a longitudinal axis (A), cam actuation means (6) located in an end portion or head (2'') of the case (2), interacting with the shank (10), at least one slot (8,8') on the head (2'') of said case (2) for insertion of a control key (7) adapted to interact with the actuation means (6) to control opening and closing of the contacts (3,3';4,4'), at least one blocking electromagnet (11) acting on the shank (5) to allow safe operation of the machine or installation. The electromagnet (11) comprises a core or full armature (13), distinct and separate from the shank (10), and the cam actuation means (6) include a cam (9) with at least one seat (23) adapted to interact with the key (7) to prevent its extraction when the electromagnet (11) is not excited. <IMAGE>
IPC 1-7
IPC 8 full level
H01H 27/00 (2006.01)
CPC (source: EP)
H01H 27/007 (2013.01); H01H 2027/005 (2013.01)
Citation (search report)
[DX] WO 9518457 A1 19950706 - EJA ENG PLC [GB], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0977228 A2 20000202; EP 0977228 A3 20000920; EP 0977228 B1 20050323; DE 69924327 D1 20050428; DE 69924327 T2 20060316; ES 2239828 T3 20051001; IT VI980141 A1 20000127
DOCDB simple family (application)
EP 99202446 A 19990726; DE 69924327 T 19990726; ES 99202446 T 19990726; IT VI980141 A 19980727