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. 31, 2012
Filed:
Jan. 14, 2009
Applicants:
Yoshifumi Shige, Kashiba, JP;
Satoshi Kondo, Okazaki, JP;
Yasuhiro Ohta, Kitanagoya, JP;
Inventors:
Assignee:
JTEKT Corporation, Osaka-Shi, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H 29/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A disc spring is provided between a ball screw nut and a hollow shaft, and another disc spring is provided between rolling bearings and a housing. When leftward motion of a screw shaft is stopped and a rotational inertia force is applied to the ball screw nut, these disc springs allow the ball screw nut to rotate to a certain degree.