Global Patent Index - EP 0977228 A2

EP 0977228 A2 2000-02-02 - 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

EP 0977228 A2 (EN)

Application

EP 99202446 A

Priority

IT VI980141 A

Abstract (en)

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 (main, further and additional classification)

H01H 27/00

IPC 8 full level (invention and additional information)

H01H 27/00 (2006.01)

CPC (invention and additional information)

H01H 27/007 (2013.01); H01H 2027/005 (2013.01)

Designated contracting state (EPC)

DE ES FR GB IT

EPO simple patent family

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

INPADOC legal status


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2009-10-14 [27O] OPPOSITION REJECTED

- Effective date: 20090318

2006-03-10 [ET] FR: TRANSLATION FILED

2006-02-08 [26] OPPOSITION FILED

- Opponent name: SIEMENS ABTEILUNG: CT IP TS

- Effective date: 20051216

2005-10-01 [REG ES FG2A] DEFINITIVE PROTECTION

- Document: ES 2239828 T3

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- Document: DE 69924327 P 20050428

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- Effective date: 20040212

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- Owner name: PIZZATO ELETTRICA S.R.L.

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