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. 26, 2014
Filed:
May. 07, 2009
Kouhei Toyohara, Sagamihara, JP;
Kazuhiro Mizumiya, Kawasaki, JP;
Yoshitaka Miura, Yokohama, JP;
Tsutomu Kamitani, Ebina, JP;
Shinji Kiyohara, Ebina, JP;
Kouhei Toyohara, Sagamihara, JP;
Kazuhiro Mizumiya, Kawasaki, JP;
Yoshitaka Miura, Yokohama, JP;
Tsutomu Kamitani, Ebina, JP;
Shinji Kiyohara, Ebina, JP;
Jatco Ltd, Fuji-shi, JP;
Abstract
Each steel element for a V-belt of a continuously variable transmission has a flank () that comprises a plurality of equally spaced raised portions () each being placed between two fine grooves (). A flat flatness ratio (FR) given by the equation (1) is set to the highest one of values that are capable of practically machining the flank () of the steel element () and capable of causing the flank () to exhibit a given and satisfied lubrication oil discharging effect, and a groove pitch (GP) that is a distance between the two fine grooves () is set to a value that is capable of practically machining the flank of the steel element and capable of causing the flank to exhibit a given and satisfied lubrication oil discharging effect. The groove pitch thus set is a value that is permitted by the higher value of the flatness ratio thus set.FR (%)=WRP/(WRP+WG)×100  (1)