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:
Oct. 31, 2023
Filed:
Dec. 12, 2018
Applicant:
Zf Friedrichshafen Ag, Friedrichshafen, DE;
Inventor:
Florian Pöhnlein, Weildorf, DE;
Assignee:
ZF FRIEDRICHSHAFEN AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C 14/06 (2006.01); F04C 2/344 (2006.01); F04C 14/24 (2006.01); F16H 61/00 (2006.01);
U.S. Cl.
CPC ...
F04C 14/06 (2013.01); F04C 2/3442 (2013.01); F04C 14/24 (2013.01); F16H 61/0025 (2013.01); F04C 2270/185 (2013.01); F04C 2270/19 (2013.01); F04C 2270/701 (2013.01);
Abstract
A vane pump () for an automatic transmission includes a suction-side behind-vane pressure duct () and a pressure-side behind-vane pressure duct (). The suction-side behind-vane pressure duct () is connected to the pressure side () of the vane pump (). A valve device () is connected to the pressure-side behind-vane pressure duct (). During operation of the vane pump (), a pressure-side behind-vane pressure (p DH) can be set in the pressure-side behind-vane pressure duct () with the valve device ().