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. 06, 2010
Filed:
May. 23, 2005
Applicants:
Thomas Turpin, Orsay, FR;
Laurent Royer, Paris, FR;
Inventors:
Thomas Turpin, Orsay, FR;
Laurent Royer, Paris, FR;
Assignee:
Renault s.a.s., Boulogne Billancourt, FR;
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A control process for mode change decisions for an infinitely variable transmission with several modes of operation including at least two parallel coupling paths, each containing a closed coupler for the first mode of operation and open for a second mode of operation, with the two couplers being closed simultaneously during a delay period during the mode changes, wherein the mode change decision is imposed onto the transmission if the speed differential at the terminals of the coupler to be closed to change the mode, exceeds a first pre-established threshold.