Switch

Details Switch Switch

1990-02-12

1991-03-26

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200147R, H01H 3308

Patent

active

050031376

ABSTRACT:
A switch for as an electromagnetic contactor, a circuit breaker for wiring, an air circuit breaker and so on is provided. The switch comprises a fixed contact 8A joined to a fixed contactor 8, an movable contact 6A joined to a movable contactor 6 to face the fixed contact, a plurality of arc extinguishing metallic plates 13 arranged with predetermined distances and in parallel to the fixed contactor 8 at the side of the end portion of the movable contactor 6 and a commutation plate 15 placed at the opposite side of the fixed contactor so as to interpose the movable contactor. In the switch, an end of the arc extinguishing metallic plates 13 is extended toward the movable contactor 6, and the end of the extended portion is cut to form leg portions 13fa, 13ga which allows the movement of the movable contact 6A, and it is moved to contact with the fixed contact 8A, whereby an arc produced between the movable contact 6A and the fixed contact 8A is rapidly attracted to the arc extinguishing metallic plates to allow interruption of a large electric current.

REFERENCES:
patent: 1963643 (1934-06-01), Brainard
patent: 4217472 (1980-08-01), Gryctko et al.
patent: 4229630 (1980-10-01), Wafer
patent: 4477704 (1984-10-01), Mori et al.
patent: 4521655 (1985-04-01), Okado et al.
patent: 4596909 (1986-06-01), Kakizoe et al.

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