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. 14, 1989
Filed:
Apr. 29, 1987
Applicant:
Inventors:
Yasuhiro Shiraishi, Sagamihara, JP;
Yoshinori Nagamine, Fujisawa, JP;
Assignee:
Nissan Motor Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60S / ;
U.S. Cl.
CPC ...
318 68 ; 318 49 ; 318D / ; 318444 ;
Abstract
A wiper control system includes a rear wiper control circuit associated with a front wiper control circuit. The wiper drive signals generated in the front wiper control circuit are fed to the rear wiper control circuit. The rear wiper control circuit derives a rear wiper drive timing on the basis of the occurrences of the front wiper drive signals. The rear wiper driving frequency is generally lower than that of the front wiper driving frequency. The lower rate of the rear wiper driving frequency relative to the front wiper driving frequency is preferably variable depending upon the vehicle driving condition.