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:
Jan. 08, 1985
Filed:
Feb. 27, 1984
Shigeo Okumura, Iwata, JP;
Yamaha Hatsudoki Kabushiki Kaisha, both of, JP;
Sanshin Kogyo Kabushiki Kaisha, both of, JP;
Abstract
Two embodiments of ignition timing mechanism wherein a timing curve is generated in response to the position of the throttle valve. In each embodiment the timing is advanced on progressive opening of the throttle valve until a predetermined maximum advance is obtained at a position less than wide-open throttle. The timing is then retarded from the maximum advanced position as the throttle valve is continued to open to its wide-open throttle position. In each embodiment the timing is retarded beyond the maximum advanced position to a predetermined advanced position prior to fully wide-open throttle position and this advance is held during the remainder of opening of the throttle valve.