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:
Dec. 03, 2019
Filed:
Jan. 24, 2017
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Inventors:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 55/17 (2006.01); F16H 3/66 (2006.01); F16H 57/08 (2006.01); F16H 57/04 (2010.01);
U.S. Cl.
CPC ...
F16H 3/663 (2013.01); F16H 55/17 (2013.01); F16H 57/08 (2013.01); F16H 57/04 (2013.01); F16H 57/0467 (2013.01); F16H 2200/0052 (2013.01); F16H 2200/2005 (2013.01); F16H 2200/2007 (2013.01); F16H 2200/2023 (2013.01); F16H 2200/2043 (2013.01); F16H 2200/2066 (2013.01); F16H 2200/2082 (2013.01);
Abstract
A gear assembly wherein transmission efficiency is enhanced by a simple treatment is provided. The gear assembly includes a plurality of gears to transmit torque of a prime mover to an output member. Tooth surfaces of a first gear rotated at a highest speed are individually finished into a plateau surface, and a parameter representing a surface roughness of each of the plateau surface is smaller than those of the tooth surfaces of the other gears.