Key switch

Details Key switch Key switch

1986-10-29

1988-03-22

Pellinen, A. D.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200 5A, 200159B, H01H 1904

Patent

active

047330244

ABSTRACT:
A key switch is provided with a depressable part having a contact set in its underside and held apart from a stationary contact located below it. The depressable part has a key switch surface located to one side of the center on the upper surface of the depressable part. The key switch is also provided with a rotation fulcrum in the center of the underside of the depressable part. The movable contact is located to one side of the center on the underside of the depressable part to allow the depressable part to turn on the fulcrum so that the movable and stationary contacts can touch each other.

REFERENCES:
patent: 4029915 (1977-06-01), Ojima
patent: 4687200 (1987-08-01), Shirai

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