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. 19, 2008
Filed:
Nov. 22, 2005
Norio Yamagishi, Nishikamo-gun, JP;
Norio Yamagishi, Nishikamo-gun, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A rubber (elastic substance) is attached by vulcanization and an annular sealing memberis formed in an annular groovehaving a step and provided in the bottom wall of a bodyof a valve disc. The sealing memberhas an annular portionand an annular portion. Most of the annular portionsare located in a deep groove portionand a shallow groove portion, respectively, and the volume of the annular portionis larger than the volume of the annular portion. Furthermore, an annular protrusion, which protrudes downward, is provided in the boundary region between the annular portions. An inclined section that is inclined at the prescribed inner angle Q is also formed in the boundary region.