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:
Jun. 10, 2003
Filed:
Jul. 24, 2001
Hiroo Yabe, Shizuoka, JP;
Kazuhiro Kubota, Shizuoka, JP;
Yazaki Corporation, Tokyo, JP;
Abstract
A wiper control apparatus includes a combination switch , a wipermotor , an autostop (AS) switch , a first semiconductor switch element for on/off controlling energization of the wiper motor, a second semiconductor switch element for turning on a closed circuit which passes a reverse current through the wiper motor while the energization for the wiper motor is off, a controller for ON/OFF controlling the first and the second semiconductor switch element, and a current limiting resistor R for limiting the current flowing the second semiconductor switch element . In this configuration, a wiper control apparatus can be provided which can solve the problem when the abnormality of short-circuiting downstream of the wiper motor occurs, is compact, reliable and surely operable using semiconductor switches and a digital-controlled controller.