Electromagnetic relay assembly with test actuator

Details Electromagnetic relay assembly with test actuator Electromagnetic relay assembly with test actuator

1992-05-21

1993-03-16

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Polarity-responsive

335202, 335128, H01H 5122

Patent

active

051948397

ABSTRACT:
An electromagnetic relay assembly which comprises a relay unit having a generally elongated contact carrier member supported for pivotal movement about a point of pivot and normally biased in one direction, and a casing enclosing the relay unit and including at least first and second wall members angled relative to each other. The casing has a corner opening defined at a corner region between top and side walls and delimited by a first open area in the top wall and a second open area in the side wall. The corner opening in the casing is closed by a covering with the first and second lids covering the first and second open areas, respectively. The side wall has opposite side edges confronting the side open area, and respective portions of the side edges adjacent the top wall are formed with guide members for slidably receiving the second lid when the covering is mounted on the casing. A test actuator element is secured to the second lid for driving the contact carrier member in an opposite direction when an external pushing force is applied to the second lid and also for driving the contact carrier member in the opposite direction when the second lid is further slid by an application of an external pushing force to the first lid.

REFERENCES:
patent: 4322702 (1982-03-01), Bosch
patent: 4400672 (1983-08-01), Bottelson
patent: 4405911 (1983-09-01), Hasegawa et al.
patent: 4542359 (1985-09-01), Ide et al.
patent: 5027094 (1991-06-01), Yasuoka et al.

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