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:
Aug. 26, 1997
Filed:
Apr. 17, 1996
Applicant:
Inventor:
Tatsuyuki Masuda, Iwata, JP;
Assignee:
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ;
U.S. Cl.
CPC ...
123 / ;
Abstract
Several embodiments of two-cycle internal combustion engines having exhaust control valves that include butterfly-type valves for minimizing the likelihood of sticking and reducing the area where deposits could form that would interfere with the valve operation. The butterfly-type valves are journaled in a separate valve housing that is mounted in a transversely extending bore that extends through the cylinder block of the engine for facilitating servicing.