Patent · US Active

Transmission with double-flow sliding vane pump

US10823170B2 · kind B2 · utility

0Cited by

3References

10Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Carl Schilling · Weingarten, DE
Martin Brehmer · Tettnang, DE
Markus Gentner · Markdorf, DE
Armin Thiele · Tettnang, DE

Key dates

Filing date	Apr 19, 2018
Grant date	Nov 3, 2020
Priority date	—
Expiry date	Dec 24, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04C2240/30
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A transmission device (1) has a double-flow sliding vane pump (4). Hydraulic fluid is supplied to suction sides (5A, 5B) of the pump (4) through an inlet area (14) from a hydraulic fluid reservoir (11) and from a suction loading (16) via an annular chamber (7) and pump inlets (9, 10). The annular chamber (7) is delimited by the cam ring (6) and a housing (8) enclosing the cam ring (6). A sealing gap (17) extends in the circumferential direction (U) between one of the pump inlets (10) and a circumferential area (44) of the cam ring (6) delimiting the inlet area (14) from the hydraulic fluid reservoir (11). Courses (19, 20) of the inlet area (14) and of the suction loading (16) installed in the transmission device (1) respectively form a first angle (α) and a second angle (β) with the vertical axis (21) of the transmission device (1).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.