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:
Nov. 21, 2017
Filed:
Apr. 26, 2016
Jtekt Corporation, Osaka-shi, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Junya Miyake, Toyota, JP;
Koji Nishi, Anjo, JP;
Kazuhisa Sugiyama, Okazaki, JP;
Takumi Mio, Kariya, JP;
Sachiko Kubota, Nagoya, JP;
Eiji Okawachi, Toyota, JP;
Akira Yamashita, Toyota, JP;
Naohiro Takeshita, Toyota, JP;
JTEKT CORPORATION, Osaka-shi, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Abstract
A valve device includes: a poppet that is formed in a hollow shaft shape except for a leading end, has a tapered closure part at the leading end and a side hole passing through a wall of the hollow shaft-shaped part, and rotates around a shaft center thereof during opening and closing actions; and a valve seat having a sloped seat surface with which the closure part of the poppet comes into contact when closing the valve device. The closure part of the poppet or the seat surface of the valve seat, whichever has a higher hardness, has a cut mark of the opposite direction from a direction of rotation of the poppet around the shaft center that occurs during the valve closing action.