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:
May. 23, 2006
Filed:
Sep. 12, 2003
Kurt Nickerson, Farmington, MI (US);
Lee Becker, Canton, MI (US);
Charles Barnes, Plymouth, MI (US);
Rodney Smith, Vinalhaven, ME (US);
Kurt Nickerson, Farmington, MI (US);
Lee Becker, Canton, MI (US);
Charles Barnes, Plymouth, MI (US);
Rodney Smith, Vinalhaven, ME (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A hydraulic system for controlling the engagement and disengagement of a friction element includes a source of line pressure, a source of exhaust pressure, a manual valve having a forward state and a reverse state, connected to the exhaust pressure source and line pressure source and including a first outlet and a second outlet, for opening and closing communication between said outlets and said pressure sources in response to changes in the states, a friction element communicating with the line pressure source through the manual valve in the reverse state, and a control valve including a port communicating with the friction element, the control valve producing control pressure at the port when the manual valve is in the forward state.