EP 0203496 B1 19910821 - ELECTROMAGNETIC RELAY
Title (en)
ELECTROMAGNETIC RELAY
Publication
Application
Priority
DE 3518424 A 19850522
Abstract (en)
[origin: US4689587A] An electromagnetic relay has a hollow coil having a magnet system forming a flux guidance loop in a circuit with a portion extending outside of and parallel to the coil, and another portion, formed by the armature, extending through the interior of the hollow coil. The loop is interrupted by a working air gap, which is slanted relative to the longitudinal axis of the coil, and which is completely encompassed within the interior of the coil. The air gap is formed by a wedge-shaped portion of the armature in registry with a wedge-shape pole piece. The slanted surfaces are longer in length than surfaces parallel to the coil axis, thereby providing a larger area for flux transfer through the air gap. Additionally, by slanting the flux transfer faces within the hollow coil, the overall size of the relay is not increased. The free end of the armature at which the flux transfer surface thereof is disposed as a continuation which engages a contact spring disposed at one end face of the coil body, for moving the contact spring with respect to one or more stationary contact elements for electrical connection and disconnection therewith.
IPC 1-7
IPC 8 full level
H01H 50/44 (2006.01); H01H 50/04 (2006.01); H01H 50/18 (2006.01); H01H 50/54 (2006.01); H01H 50/56 (2006.01)
CPC (source: EP US)
H01H 50/18 (2013.01 - EP US); H01H 50/548 (2013.01 - EP US)
Citation (examination)
DE 2115004 A1 19721012 - MERK GMBH TELEFONBAU FRIED
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0203496 A2 19861203; EP 0203496 A3 19890315; EP 0203496 B1 19910821; AT E66542 T1 19910915; DE 3680950 D1 19910926; JP H0736311 B2 19950419; JP S61271725 A 19861202; JP S61271727 A 19861202; US 4689587 A 19870825
DOCDB simple family (application)
EP 86106834 A 19860520; AT 86106834 T 19860520; DE 3680950 T 19860520; JP 11630786 A 19860522; JP 11630886 A 19860522; US 85881486 A 19860502