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:
Jan. 20, 2015
Filed:
May. 24, 2011
Farzad Samie, Franklin, MI (US);
Chi-kuan Kao, Troy, MI (US);
Kumaraswamy V. Hebbale, Troy, MI (US);
Chunhao J. Lee, Troy, MI (US);
Dongxu LI, Warren, MI (US);
Andrew L. Bartos, Clarkston, MI (US);
Kevin B. Rober, Washington, MI (US);
Farzad Samie, Franklin, MI (US);
Chi-Kuan Kao, Troy, MI (US);
Kumaraswamy V. Hebbale, Troy, MI (US);
Chunhao J. Lee, Troy, MI (US);
Dongxu Li, Warren, MI (US);
Andrew L. Bartos, Clarkston, MI (US);
Kevin B. Rober, Washington, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A continuously variable transmission (CVT) for a vehicle includes a hydraulically-controlled component and a pilot valve. The pilot valve includes at least one micro-electrical-mechanical-systems (MEMS) based device. The pilot valve is operably connected to and is configured for actuating the hydraulically-controlled component. The pilot valve additionally includes a regulating valve operably connected to the pilot valve and to the hydraulically-controlled component. The regulating valve is configured to direct fluid to the hydraulically-controlled component when actuated by the pilot valve.