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:
Nov. 03, 2020
Filed:
Apr. 19, 2018
Zf Friedrichshafen Ag, Friedrichshafen, DE;
Carl Schilling, Weingarten, DE;
Martin Brehmer, Tettnang, DE;
Markus Gentner, Immenstaad, DE;
Armin Thiele, Tettnang, DE;
ZF FRIEDRICHSHAFEN AG, Friedrichshafen, DE;
Abstract
A transmission device () has a double-flow sliding vane pump (). Hydraulic fluid is supplied to suction sides (A,B) of the pump () through an inlet area () from a hydraulic fluid reservoir () and from a suction loading () via an annular chamber () and pump inlets (). The annular chamber () is delimited by the cam ring () and a housing () enclosing the cam ring (). A sealing gap () extends in the circumferential direction (U) between one of the pump inlets () and a circumferential area () of the cam ring () delimiting the inlet area () from the hydraulic fluid reservoir (). Courses () of the inlet area () and of the suction loading () installed in the transmission device () respectively form a first angle (α) and a second angle (β) with the vertical axis () of the transmission device ().