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:
Dec. 05, 2000
Filed:
Dec. 17, 1998
Yoshiaki Uchida, Iwata, JP;
Yamaha Hatsudoki Kabushiki Kaisha, Shizuoka-ken, JP;
Abstract
A snowmobile is powered by an internal combustion engine. The engine has an exhaust timing control valve, a control unit and a generator. The control unit determines the positioning of the control valve as a function of engine speed. Additionally, the control unit initiates a control valve cleaning cycle when the engine speed first exceeds a first predetermined speed within a predetermined range of engine speeds. The first predetermined speed is desirably an engine speed at which the generator generates sufficient power to render the control unit operable. The control unit retracts the control valve when the engine speed exceeds the upper limit of the predetermined range. Thereafter, the control unit initiates another control valve cleaning cycle when the engine speed decreases below a second predetermined engine speed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile