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:
Jun. 27, 2017
Filed:
Jun. 11, 2015
Applicant:
Jtekt Corporation, Osaka-shi, Osaka, JP;
Inventor:
Jun Hamakita, Kashihara, JP;
Assignee:
JTEKT CORPORATION, Osaka-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H 1/16 (2006.01); F16H 55/02 (2006.01); F16H 55/22 (2006.01); B23F 11/00 (2006.01); F16H 55/24 (2006.01);
U.S. Cl.
CPC ...
F16H 1/16 (2013.01); B23F 11/00 (2013.01); F16H 55/22 (2013.01); F16H 55/24 (2013.01);
Abstract
A plane that contains a central axis of a worm shaft and that is orthogonal to a central axis of a worm wheel is arranged at a central position of the worm wheel in a tooth width direction thereof when no load is applied to a worm speed reducer. The worm wheel is formed by a cutting operation using a hob with a hob center offset from the central position toward an offset direction corresponding to a first direction along the tooth width direction. A pair of tooth flanks has different pressure angles at the central portion in the tooth width direction.