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:
Sep. 26, 1995
Filed:
Jan. 03, 1994
Eric G Schaefer, Farmington Hills, MI (US);
Other;
Abstract
A method of automatically controlling the operating speed of a vehicular windshield wiping system based on an average rate of change in the value of a sensor signal indicative of the moisture on the windshield. The wiping system includes a motor for driving at least one wiper blade at a high speed and a low speed, and a sensor mounted to the windshield for monitoring a portion of the windshield wiped by the at least one wiper blade. The method includes determining an average rate of change in the sensor signal value over a predetermined period of time and operating the wiper system with the motor at the high speed based on the average rate of change in the sensor signal value. In one embodiment, the method includes wiper system is operated with the motor at the high speed based on the frequency with which the average rate of change in the sensor signal value drops below a first predetermined threshold.