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:
Jul. 13, 2010
Filed:
Feb. 12, 2008
Mark A. Vernacchia, Northville, MI (US);
Brian W. Whitmarsh, Commerce, MI (US);
Joshua E. Lehrmann, Ann Arbor, MI (US);
Todd W. Rooney, Howell, MI (US);
Wayne B. Vogel, Canton, MI (US);
Mark A. Vernacchia, Northville, MI (US);
Brian W. Whitmarsh, Commerce, MI (US);
Joshua E. Lehrmann, Ann Arbor, MI (US);
Todd W. Rooney, Howell, MI (US);
Wayne B. Vogel, Canton, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A hydraulic control circuit for a transmission includes a plurality of solenoids and valves in fluid communication with a plurality of actuators. The actuators are operable to actuate a plurality of torque transmitting devices. Selective activation of the solenoids allows for a pressurized fluid flow to activate at least one of the actuators in order to shift the transmission into a desired gear ratio.