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:
Apr. 25, 1995
Filed:
Nov. 12, 1993
Hiroki Shibata, Shizuoka, JP;
Tomoaki Serizawa, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A vehicular cornering lamp system which reduces spark noise generated by a motor thereof, reduces wear of parts such as the brushes and commutator of the motor, and improves the rate of use of the power voltage of the system and thereby generates sufficient torque to rotate the motor. An illumination direction control circuit generates voltages to be applied to the two terminals of the motor according to differences between the output voltage of a lamp illumination angle sensor and the output voltage of a steering sensor. The illumination direction control circuit applies the center voltage of a supply battery voltage to the two terminals of the motor when the voltage difference is zero, and as the voltage difference increases, changes the voltages applied to the motor terminals in a direction such that a difference between the applied voltages increases, and, as the voltage difference decreases, changes the voltages applied to the motor terminals in a direction such that the difference between the applied voltages decreases.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile