The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 1987
Filed:
Feb. 09, 1987
Donald L Millerd, San Diego, CA (US);
Marl J Bell, Valley Center, CA (US);
Steven Alpert, Encinitas, CA (US);
Abstract
The invention is directed to an automatic wiper control circuit for operating window wipers automatically when moisture is sensed. The control circuit additionally provides for increasing the speed of a dual speed wiper motor when a high level of moisture is detected. The system comprises a moisture sensor which senses moisture thereon. A circuit associated with the moisture sensor converts the moisture level to DC voltage. At a preselected level of this DC voltage the wiper motor operates in one of its two different speeds. A lack of a predetermined amount of moisture terminates the wiper motor operation. If the control circuit terminates the wiper motor action during wiper sweep, the normal homing circuit of the wiper motor continues to operate the motor until the wiper blade or blades reach the wiper blade home position. Sequential illumination of a plurality of light emitting diodes (LEDS) occur during a wiping cycle when the circuit is operating normally. A switch is provided to remove the automatic wiper control circuit from the conventional automotive wiper motor circuit. A separate LED provides a visual indication of automatic wiper control circuit disconnection from the conventional automotive wiper motor circuit.