Electrical transmission or interconnection systems – Plural load circuit systems – Selectively connected or controlled load circuits
Patent
1975-09-04
1978-02-21
Schaefer, Robert K.
Electrical transmission or interconnection systems
Plural load circuit systems
Selectively connected or controlled load circuits
318DIG2, H02J 100
Patent
active
040755010
ABSTRACT:
A wiper switch is connected to a wiper motor through a relay switch and further to a switch condition discrimination circuit which produces a trigger signal when the wiper switch is actuated from the closed state to the opened state and again to the closed state within a fixed time. A multivibrator is connected to the switch condition discrimination circuit and begins to oscillate upon receiving the trigger signal. The relay switch connected between the wiper motor and the wiper switch is actuated to open when receiving the oscillation pulses from the multivibrator, whereby the wiper motor is intermittently supplied with the electric power to perform the intermittent wiper operation.
REFERENCES:
patent: 3355577 (1967-11-01), Heuer
patent: 3426259 (1969-02-01), Ziehm
patent: 3852722 (1974-12-01), Neuville
patent: 3899773 (1975-08-01), Yamauchi et al.
patent: 3911316 (1975-10-01), Feick et al.
Feldhaus John J.
Nippondenso Co. Ltd.
Schaefer Robert K.
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