Ventilated electromagnetic switch

Details Ventilated electromagnetic switch Ventilated electromagnetic switch

1978-05-08

1980-05-13

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

With housing or support means

200306, 335156, H01H 4512, H01H 902

Patent

active

042030846

ABSTRACT:
An electromagnetic switch has a movable contact and a stationary contact accommodated and sealed in a container of a given shape. In the container, there are provided at the axial top and bottom of the container, meander venting paths for communicating the inside of the container with surrounding atmosphere. The ventilation of the inside of the container is thus effectively attained by the meander paths so that the formation of ice on the stationary contact can be prevented.

REFERENCES:
patent: 1928846 (1933-10-01), Allen
patent: 2589024 (1952-11-01), Peter
patent: 3328553 (1967-06-01), Gryctko
patent: 3336457 (1967-08-01), Julian et al.
patent: 3973477 (1976-08-01), Jakob et al.

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