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. 29, 1983
Filed:
Jun. 22, 1981
Hayashi Kageyama, Ohta, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A system is for a four-wheel drive vehicle for automatically changing the transmission of the engine of the vehicle from two-wheel drive to four-wheel drive or vice versa in accordance with the driving condition. The transmission transmits power from the engine to two main wheels, and an electromagnetic clutch having a magnetizing coil transmits the power of the engine to drive two auxiliary wheels. A steering angle sensor produces an output signal when the steering angle exceeds a predetermined value, and a control circuit controls the clutch current applied to the coil of the electromagnetic clutch. The control circuit operates such that when the output signal of the steering angle sensor is applied thereto, the clutch current is cut off so as to disengage the electromagnetic clutch so as to provide two-wheel driving.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile