Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – With housing or support means
Patent
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.
Aoyama Kenjiro
Kazino Sadayosi
Nishio Yukihiro
Yamaguchi Takao
Broome Harold
Nippondenso Co. Ltd.
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