Global Patent Index - EP 0860848 A3

EP 0860848 A3 19990317 - Electromagnetic safety relay

Title (en)

Electromagnetic safety relay

Title (de)

Elektromagnetisches Sicherheitsrelais

Title (fr)

Relais de sécurité électromagnétique

Publication

EP 0860848 A3 19990317 (EN)

Application

EP 98200107 A 19980115

Priority

IT MI970295 A 19970213

Abstract (en)

[origin: EP0860848A2] An electromagnetic safety relay (90) comprising a coil (10) wound about a core, a metal frame (20), a movable armature (30) secured to the frame (20) and used to operate an assembly of contact carrier strips (50) consisting of fixed strips (5F) and mobile strips (5M), an actuator (40) guiding the movement of the strips (50), and a return spring (80) positioned below the frame (20) such that the system of active forces (given by the movable armature (30)) and of reactive forces (given by the return spring (80)) is asymmetric, ie is applied on the same side of the actuator (40). This constructional arrangement enables the fixed contact carrier strips (5F) to be given sufficient rigidity and enables a single compact and robust actuator model (40) to be used for the various configurations of the electrical contacts (70) of the relay (90). Moreover, differential malfunctions between the two sides of the assembly of electrical contacts (70) are prevented and it becomes possible to determine and indicate anomalies in the case of breakage of the actuator (40) with the relay (90) energized. <IMAGE>

IPC 1-7

H01H 50/56; H01H 50/64

IPC 8 full level

H01H 50/56 (2006.01); H01H 50/64 (2006.01); H01H 3/00 (2006.01)

CPC (source: EP)

H01H 50/56 (2013.01); H01H 50/642 (2013.01); H01H 3/001 (2013.01)

Citation (search report)

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)

EP 0860848 A2 19980826; EP 0860848 A3 19990317; IT 1290310 B1 19981022; IT MI970295 A1 19980813

DOCDB simple family (application)

EP 98200107 A 19980115; IT MI970295 A 19970213