Machine tool relay structure

Details Machine tool relay structure Machine tool relay structure

1982-08-25

1984-10-23

Miller, J. D.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

335197, 335198, H01H 5004

Patent

active

044791020

ABSTRACT:
An electromagnetic relay having a three part housing. A first or base housing part positions a magnet coil and a stationary magnet pole piece. A second or front housing part positions springs for positioning the coil in the base part, provides a seat for armature return springs and a guide for an assembly including a magnetic armature. A third or a middle housing part maintains the return springs and armature assembly assembled in the front housing part. The front and middle housing parts have rectangularly shaped confronting surfaces which are spaced so the areas of engagement between the middle housing part and the front part are limited to the areas at the four corners of the front and the middle housing parts. The relay also includes a movable contact actuator that is held captive by a cover for the relay.

REFERENCES:
patent: 3453571 (1969-07-01), Koertge
patent: 3821671 (1974-06-01), Grunert et al.
patent: 3835425 (1974-09-01), Karch et al.
patent: 4086550 (1978-04-01), Conner
patent: 4184134 (1980-01-01), Kane et al.

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