Rotary multiple capacitive switch

Details Rotary multiple capacitive switch Rotary multiple capacitive switch

1996-02-23

1998-01-20

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Steering wheel, shaft or column mounted

200600, H01H 900

Patent

active

057104000

ABSTRACT:
A stalk operated switch assembly having a stalk or lever end-mounted on a housing includes a button on the free end which is user rotatable for effecting rotation of a cam within the housing. The housing includes a plurality of capacitive switches aligned thereon. Each switch is made by applying alternate layers of conductive and dielectric ink and curing to form individual pairs of spaced capacitive plates. A conductive elastomer pad is disposed over each pair of plates and compressed against the plates by an individual actuator for each pad. The individual actuators are moved by one of plural concentric cam tracks formed on the rotor. The stalk type rotary multiple capacitive switching assembly has application for automotive windshield wiper delay circuit control.

REFERENCES:
patent: 4131772 (1978-12-01), Weckenmann et al.
patent: 4219709 (1980-08-01), Scarbro
patent: 4518836 (1985-05-01), Woolridge
patent: 4900946 (1990-02-01), Williams et al.
patent: 5049706 (1991-09-01), Du Rocher
patent: 5130507 (1992-07-01), Zuercher
patent: 5453588 (1995-09-01), Du Rocher et al.

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