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:
Apr. 07, 2015
Filed:
Sep. 15, 2009
David Monfette, Sherbrooke, CA;
Eric Lafreniere, Saint-Nicephore, CA;
Roger Rioux, Sherbrooke, CA;
Daniel Duceppe, Rock Forest, CA;
David Monfette, Sherbrooke, CA;
Eric Lafreniere, Saint-Nicephore, CA;
Roger Rioux, Sherbrooke, CA;
Daniel Duceppe, Rock Forest, CA;
Consortium de Recherche BRP—Universite de Sherbrooke S.E.N.C., Sherbrooke, CA;
Abstract
A vehicle powertrain has an engine, a driving shaft having a passage defined therein, a driven shaft, a pump, a hydraulic fluid reservoir, and a CVT. A driving pulley of the CVT includes a fixed sheave and a movable sheave disposed on the driving shaft for rotation therewith, a spring biasing a movable sheave away from the fixed sheave, and a CVT chamber fluidly communicating with the passage of the driving shaft. The pump supplies hydraulic fluid from the reservoir to the passage in the driving shaft. The hydraulic fluid flows from the passage to the CVT chamber to create a hydraulic pressure in the CVT chamber. The hydraulic pressure in the CVT chamber biases the movable sheave toward the fixed sheave.