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. 21, 1987
Filed:
Feb. 22, 1985
Yukiharu Hosoi, Shizuoka, JP;
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Abstract
A four cycle internal combustion engine has a cylinder, a piston slidable therein, intake and exhaust valves, a pair of intake passages, and an exhaust passage. There are at least three intake valves, and the intake passages are connected so that each discharges to an intake valve adjacent to the central axis of the cylinder, and in addition also to respective other intake valves on the opposite sides of an axis of symmetry. The plural intake valves, and if desired also the plural exhaust valves, are simultaneously activated because they are connected to a respective plate that is contacted by an actuating cam. The respective valve stems are inclined in a V shaped configuration to accommodate a plug between them, and a central one of the valves can be offset (advanced) into the combustion chamber to improve the combustion characteristics.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile