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:
Nov. 09, 1999
Filed:
Mar. 23, 1998
Applicant:
Inventors:
Haruo Sakamoto, Higashihiroshima, JP;
Hidenao Takedomi, Hiroshima, JP;
Kazuhiko Ueda, Hatsukaichi, JP;
Toshihiko Osumi, Higashihiroshima, JP;
Assignee:
Mazda Motor Corporation, Hiroshima-ken, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B60K / ; F16H / ; F16H / ;
U.S. Cl.
CPC ...
476 10 ; 477 50 ;
Abstract
A toroidal type continuously variable transmission whose gear ratio is varied by changing the position of a trunnion is provided with double-slider valves driven by stepping motors and linear solenoid valves. The gear ratio control is performed by controlling position of the double-slider valves when the vehicle travels at speeds higher than a specified speed or by controlling directly line and relief pressures applied to the trunnion through the solenoid valves.