Automated windshield wiper system

Details Automated windshield wiper system Automated windshield wiper system

1984-02-29

1985-11-19

Shoop, William M.

Electricity: motive power systems

Periodic, repetitious or successive operations control of...

Variable periods or intervals between controlling operations

318483, 318DIG2, H02P 104

Patent

active

045544930

ABSTRACT:
An apparatus for automatic activation and control of windshield wipers in response to moisture accumulation at the exterior surface of the windshield, including a pair of thin wires sandwiched within the windshield and positioned below the surface of the windshield to be cleared by the windshield wipers. The wires provide variable capacitance to a detection circuit, based on the amount of water occurring at the windshield surface. Activating circuitry is coupled to the detecting circuitry and wiper motor for initiating wiper action when capacitance measurement exceeds a predetermined reference standard.

REFERENCES:
patent: 2617972 (1952-11-01), Nutter
patent: 2823346 (1958-02-01), Weber
patent: 3487492 (1970-01-01), Bischoff
patent: 3826979 (1974-07-01), Steinmann
patent: 3868492 (1975-02-01), Taylor
patent: 4010383 (1977-03-01), Grassmann
patent: 4131834 (1978-12-01), Blaszkowski
patent: 4317073 (1982-02-01), Blaszkowski

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