Rain sensor car electric window closure control

Details Rain sensor car electric window closure control Rain sensor car electric window closure control

1992-10-02

1994-03-08

Shoop, Jr., William M.

Electricity: motive power systems

Automatic and/or with time-delay means

Moisture content or wetness

318DIG2, 15250001, E05F 1520, B60R 1602

Patent

active

052931056

ABSTRACT:
With an automobile having electric power windows a power drive control circuit includes a solid state on-off power solid state device such as a PNP transistor with a moisture content sensor element interconnecting two electrodes of the solid state device (the emitter and base of the PNP transistor). When the moisture content sensor element becomes moistened as by rain falling thereon its electric through path resistance lessens to thereby achieve bias to conductive state for the PNP transistor through conductive state to activate the window motor drive and close any vehicle windows from the open state.

REFERENCES:
patent: 4198573 (1980-04-01), Reneau
patent: 4852469 (1989-08-01), Chaung
patent: 4908554 (1990-03-01), Chance
patent: 5004961 (1991-04-01), Berner et al.
patent: 5006796 (1991-04-01), Yuhas et al.
patent: 5159247 (1992-10-01), Resch

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