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. 05, 2014
Filed:
May. 11, 2012
Hiroyuki Shiga, Shinagawa-ku, JP;
Kotaro Takamura, Shinagawa-ku, JP;
Yukihiro Kawamoto, Shinagawa-ku, JP;
Masahiro Koizumi, Shinagawa-ku, JP;
Haruo Oka, Shinagawa-ku, JP;
Koji Matsuda, Shinagawa-ku, JP;
Hiroyuki Shiga, Shinagawa-ku, JP;
Kotaro Takamura, Shinagawa-ku, JP;
Yukihiro Kawamoto, Shinagawa-ku, JP;
Masahiro Koizumi, Shinagawa-ku, JP;
Haruo Oka, Shinagawa-ku, JP;
Koji Matsuda, Shinagawa-ku, JP;
Hirata Corporation, Shinagawa-Ku, Tokyo, JP;
Abstract
This invention provides a retainer assembling apparatus which assembles a retainer to a valve stem via a cotter which engage with an engaging groove formed on the valve stem. The cotter comprises a pair of cotter segments. The apparatus includes a cylindrical body, a holding portion which holds the retainer contacting a lower end of the cylindrical body, a push-up shaft which pushes up the pair of cotter segments into the cylindrical body, and an axial body which is arranged in the cylindrical body to be coaxial with the push-up shaft and to be coaxially movable. The cylindrical body includes a tapered inner circumferential portion on an inner circumferential wall lower portion thereof.