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:
Aug. 12, 2014
Filed:
Sep. 02, 2010
David C. Mills, Lake Orion, MI (US);
David C. Mills, Lake Orion, MI (US);
Borgwarner Inc., Auburn Hills, MI (US);
Abstract
A hydraulic circuit () for an automatic transmission () that employs a shift actuation valve () that controls the actuation of the synchronizer () for selectively controlling gear engagement. The shift actuation valve () includes a valve member () having at least one valve element () with an outer diameter () and a metering face (). The metering face () is adapted to control the flow of pressurized fluid between an inlet () and an outlet () of the valve body (). The metering face () includes a flow force compensating annular void () disposed adjacent the outer diameter () and that is defined by a lead angle α measured between the outer diameter () and a line intersecting the outer diameter () and tangential to the annular void (). A solenoid () is employed to move the valve member () between predetermined positions.