Electricity: motive power systems – Braking – Automatic and/or with time-delay means
Patent
1976-09-23
1978-05-23
Schaefer, Robert K.
Electricity: motive power systems
Braking
Automatic and/or with time-delay means
318120, 318DIG2, H02K 3300, H02P 300
Patent
active
040913171
ABSTRACT:
A variable delay windshield wiper control system is provided in conjunction with a conventional windshield wiper system of an automobile to control the operation wiper drive source and wiper drive mechanism at predetermined variable intervals. The variable delay wiper control system operates independently of the conventional wiper switch and is effective to provide an adjustable delay interval between successive windshield wiper sweeps or reciprocative paths as is desirable during light rain or precipitation conditions.
The wiper control system includes a timing circuit which generates variable duration intervals and directly effects operation of the drive source at the end of each of the intervals, and a delay control adjusted by the operator. A control switch is also provided for disabling the variable delay wiper control system and for effecting operation of the timing circuit. The control switch is also effective to directly control operation of the conventional drive source in one arrangement whereby an immediate windshield wiper sweep referred to as an "instant-on" condition is effected when the windshield wiper control system switch is moved from the off to the on position.
Another arrangement of the variable delay windshield wiper control system utilizes a control switch that initializes the timing circuit to provide an "instant-on" or immediate first wiper sweep upon actuation of the control switch so that a windshield wiper sweep clears the windshield immediately upon the actuation of the control system as opposed to waiting for the end of the first delay interval.
REFERENCES:
patent: 3783362 (1974-01-01), Basso
Buchner John B.
Mammen H. William
Roszyk Leon M.
Clark George R.
Dean Clifford A.
Pojunas L.
Rose Neil M.
Schaefer Robert K.
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