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. 23, 2013
Filed:
Jun. 10, 2009
Hrudaya Mahapatro, Canton, MI (US);
Robert O. Burkhart, Novi, MI (US);
John Butwin, Ann Arbor, MI (US);
Hrudaya Mahapatro, Canton, MI (US);
Robert O. Burkhart, Novi, MI (US);
John Butwin, Ann Arbor, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A system for regulating pressure supplied to a transmission control element, includes a control pressure source and line pressure source, a latch valve that opens and closes communication with the line pressure source in response to control pressure, and a regulator valve including a spool for regulating line pressure and producing control element pressure when the latch valve is closed, and an auxiliary piston responsive to line pressure and contacting the spool for connecting line pressure to the control element when the latch valve is open.