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:
Oct. 11, 2011
Filed:
Apr. 28, 2006
Robert Fuchs, Osaka, JP;
Yasuhiko Hasuda, Kashihara, JP;
Robert Fuchs, Osaka, JP;
Yasuhiko Hasuda, Kashihara, JP;
JTEKT Corporation, Osaka, JP;
Abstract
A full-toroidal continuously variable transmission has a hydraulic actuator () for applying pressing force to a pair of disks () through a roller (). The hydraulic actuator () includes first and second oil chambers (). The pressing force of the hydraulic actuator () is produced by a pressure difference between the oil chambers (). A directional control valve (P;Q) connects a hydraulic pressure source (P;Q) to either of the oil chambers, and an oil tank () is connected to the other oil chamber. Each corresponding an intermediate section (Pa,Qa) of a feeding path (P,Q) and intermediate section (Pa;Qa) of a discharge path (P;Q) are connected by a communicational path (P;Q). A check valve (P;Q) for permitting a flow of operation oil only to the feeding path side (P,Q) is provided in the communication path (P;Q). A flow restriction (P;Q) is placed on a downstream side of the intermediate section (Pa;Qa) of the discharge path (P;Q).