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:
Jul. 15, 2014
Filed:
Jul. 18, 2012
Keigo Yoshida, Atsugi, JP;
Hideaki Aoki, Hiratsuka, JP;
Hiromichi Komai, Hadano, JP;
Shinichi Kondo, Hiratsuka, JP;
Yoshimichi Takano, Atsugi, JP;
Keigo Yoshida, Atsugi, JP;
Hideaki Aoki, Hiratsuka, JP;
Hiromichi Komai, Hadano, JP;
Shinichi Kondo, Hiratsuka, JP;
Yoshimichi Takano, Atsugi, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
In a universal joint, a cross shaft member includes four shaft parts forming a cross-shape. Each of four bearing cups corresponding respectively to the shaft parts has a hollow-cylindrical shape having a bottom and is rotatably mounted to the corresponding shaft part through a roller disposed between an inner peripheral surface of the each bearing cup and an outer peripheral surface of the corresponding shaft part. Each bearing cup includes an inner bottom surface in sliding contact with a distal end surface of the corresponding shaft part, wherein the sliding contact is in an annular region encompassing a central axis of the corresponding shaft part. The distal end surface of each shaft part is formed with an annular groove encompassing the central axis of the first shaft part for storing oil.