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. 13, 2013
Filed:
May. 31, 2011
Applicants:
Tetsuya Kaneko, Okazaki, JP;
Masayoshi Asakura, Okazaki, JP;
Takashi Hara, Hamamatsu, JP;
Inventors:
Assignee:
JTEKT Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 1/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
The ball screw apparatus includes a returning way Lby mounting a circulating memberin mounted holesformed in the ball screw nut. The ball screw nutincludes a base portionand an expanding portion. In the base portiona distance from an axis center Oof the rack shaftto a bottom portionof the nut side screw grooveis constant, and in the expanding portionthe distance is larger than that of the base portion. The expanding portionincludes a connecting area