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. 01, 2006
Filed:
May. 08, 2003
Applicant:
Shinichi Kurosawa, Iwata, JP;
Inventor:
Shinichi Kurosawa, Iwata, JP;
Assignee:
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02N 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A spring seat is formed of an outer spring seatand an inner spring seatformed in a stepped-down shape so as to be positioned lower than the outer spring seat, and a valve spring is formed of an outer springand an inner springthat is disposed coaxially inside the outer springand that is larger in spring length than the outer spring