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:
Apr. 09, 2019
Filed:
Aug. 21, 2015
Applicant:
Zf Friedrichshafen Ag, Friedrichshafen, DE;
Inventors:
Assignee:
ZF FRIEDRICHSHAFEN AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 61/00 (2006.01); F16H 61/02 (2006.01); F16K 31/524 (2006.01);
U.S. Cl.
CPC ...
F16H 61/0265 (2013.01); F16H 61/0009 (2013.01); F16H 61/0267 (2013.01); F16K 31/524 (2013.01);
Abstract
A stop valve assembly is provided for the locking and unlocking of at least one hydraulic chamber of a shift element that is applied with operating pressure and is coaxially arranged at a shaft in a transmission housing of an automatic transmission of a motor vehicle. At least one first stop valve for lowering the operating pressure of the shift element and at least one second stop valve for raising the operating pressure of the shift element are provided.