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:
Feb. 24, 2015
Filed:
Sep. 06, 2011
Robert O. Burkhart, Novi, MI (US);
John Butwin, Ann Arbor, MI (US);
Derek Kinch, Ypsilanti, MI (US);
Hrudaya Mahapatro, Canton, MI (US);
Wei Zhuang, Canton, MI (US);
Anthony Koenings, Oakland, MI (US);
Robert O. Burkhart, Novi, MI (US);
John Butwin, Ann Arbor, MI (US);
Derek Kinch, Ypsilanti, MI (US);
Hrudaya Mahapatro, Canton, MI (US);
Wei Zhuang, Canton, MI (US);
Anthony Koenings, Oakland, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A latch valve includes a first port containing line pressure, a second port containing control pressure, a third port located between the first and second ports, alternately connecting the first and second ports to a transmission control element, and a fourth port containing control pressure that tends to close the second port and open the first port in opposition to a spring force.