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. 09, 2019
Filed:
Oct. 20, 2017
Ford Global Technologies, Llc, Dearborn, MI (US);
Scott Joseph Gittins, Ann Arbor, MI (US);
Matthew Scott Malnar, Detroit, MI (US);
Allison Lynch, Weidman, MI (US);
Lisa Waldock, Livonia, MI (US);
Alexander Phillip McDonnell, Dexter, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A park valve includes a slidable end-cap. Under normal circumstances, the end-cap is held in a nominal position by a spring, such as a Belleville spring. The park valve performs a multi-plexing function in which an out-of-park circuit is connected to line pressure when the valve is in an out-of-park position and is vented when the valve is in a park position. In an intermediate position, a hydraulic lock condition may potentially occur. When engaging park, the hydraulic lock condition is prevented by the slidable end-cap.