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:
Jan. 26, 2010
Filed:
Feb. 27, 2007
Taku Adaniya, Kariya, JP;
Minoru Mera, Kariya, JP;
Kiyoshi Uetsuji, Kariya, JP;
Ai Saeki, Kariya, JP;
Masatoshi Kobayashi, Kariya, JP;
Hiroshi Fukasaku, Kariya, JP;
Taku Adaniya, Kariya, JP;
Minoru Mera, Kariya, JP;
Kiyoshi Uetsuji, Kariya, JP;
Ai Saeki, Kariya, JP;
Masatoshi Kobayashi, Kariya, JP;
Hiroshi Fukasaku, Kariya, JP;
Kabushiki Kaisha Toyota Jidoshokki, Aichi-ken, JP;
Abstract
A plurality of convex portions are located inside of a virtual circumferential surface. Each convex portion connects an adjacent pair of circumferential portions with each other. Each convex portion is an arcuate curve bulging radially outward. Each convex portion defines a minimum radius. A difference between a radius R and the minimum radius is a depth Dh. Dhr=Dh×25.5/R. A range of an angular width A in relation to circumferential portion and a range of the depth Dh are set by the following expression,(5.6×+11.3)°×6<35°×6/and<[360/−2×arccos]°  (1)Therefore, decrease in torque is prevented. Torque pulsation is suppressed.