Electromagnetic relay

Details Electromagnetic relay Electromagnetic relay

2006-08-15

2006-08-15

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

C335S130000

Reexamination Certificate

active

07091805

ABSTRACT:
An electromagnetic relay has a mobile contact point attached to a contact member, a fixed contact point, a contact point spring that applies a biasing force on the contact member towards the fixed contact point, a guide that carries the contact member and said contact point spring, a coil that generates a pulling force when excited to move the guide and a returning spring that provides a biasing force for causing the guide to return. A mechanism is provided such that a load is generated on the contact member by the motion of the guide towards the fixed function against the returning spring immediately before the mobile contact point contacts the fixed contact point. This mechanism applies a contact point spring load of the contact point spring and the load as a contact pressure to the contact member for contacting the mobile contact point with the fixed contact point.

REFERENCES:
patent: 3260824 (1966-07-01), Schleicher
patent: 3740510 (1973-06-01), Grunert
patent: 4405848 (1983-09-01), Jaegle
patent: 4594484 (1986-06-01), Lemmer
patent: 4931757 (1990-06-01), Lemmer et al.
patent: 5021760 (1991-06-01), Krubsack et al.
patent: 5075660 (1991-12-01), Ootsuka
patent: 5081436 (1992-01-01), Nishi et al.
patent: 5815058 (1998-09-01), Gizaw
patent: 2315567 (1974-10-01), None
European Search Report for application No. 05002182.3-1231, dated Jul. 4, 2005.

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