Rotary switch with common contact terminal

Details Rotary switch with common contact terminal Rotary switch with common contact terminal

1992-05-20

1993-07-13

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200 11K, H01H 1958, H01H 2176

Patent

active

052275957

ABSTRACT:
A miniature rotary switch has nested terminals in its bottom wall and a spherical shaped movable contact arranged in a rotatable control member such that a lower portion of the ball rides over upwardly projecting portions of a common contact ring that is nested in the lower portion of a cavity defined in the switch housing or body portion. One of the terminals is staked to the contact ring to provide an OFF position while the other circumaxially spaced positions are defined by U-shaped cut outs in the contact ring that cause the ball to seat between the edges of each U-shaped cut out and the upper end of a fixed contact terminal provided in the semi-circular cut-out area defined by the common contact ring. The ring is so formed that the ball is releasably retained in each switch position and is biased toward such ON positions when not so retained.

REFERENCES:
patent: 4527023 (1985-07-01), Ohashi et al.
patent: 4742187 (1988-05-01), Sorenson
patent: 4748297 (1988-05-01), Sorenson et al.

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