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:
Oct. 12, 1993
Filed:
Apr. 13, 1992
Eugene B Porter, Beavercreek, OH (US);
Thomas W Holmes, Centerville, OH (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A motor vehicle glass wiper system includes first and second motor assemblies and respective first and second wiper blades. Each motor assembly is effective to move its respective wiper blade through a wipe pattern that is bounded by an outboard direction reversing position and an inboard direction reversing position. The wipe patterns of the first and second wiper blades overlap to establish an interference zone of potential wiper blade contact which is adjacent both inboard direction reversing positions and bounded thereby. A wiper motor control monitors a respective key position sensor for each wiper blade. The control energizes each one of the wiper motors to move its respective wiper blade to the inboard direction reversing position and back to the outboard direction reversing position each time the key position sensor of the other one of the wiper blades indicates a transition out of the interference zone thereby inhibiting interference between the wiper blades.