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. 28, 2020
Filed:
Sep. 18, 2017
Timothy B. King, New Woodstock, NY (US);
Timothy B. King, New Woodstock, NY (US);
Other;
Abstract
An adjustable exhaust port 2-stroke motorcycle engine with a center adjustable exhaust valve or a split center adjustable exhaust valves includes a closing fork. The closing fork or closing arm base portion is screwed or bolted to a control rod shaft. At least one spring is disposed between a surface of an engine cylinder and the at least one transverse post of an exhaust valve. A first end of the at least one spring is in contact with the surface of an engine cylinder or a surface fixed mounted to the surface of the engine cylinder, and a second end of the spring is in contact with or linked to the at least one transverse post. The center adjustable exhaust valve or either or both of a split center adjustable exhaust valves is spring biased to an open position by the at least one spring at all times.