Patent · US Active

Valve unit with axial pressure medium unit

US9719605B2 · kind B2 · utility

2Cited by

0References

10Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Christoph Ross · Bamberg, DE
Alexander Backer · Gräfenberg, DE
Josef Groschel · Gößweinstein, DE

Key dates

Filing date	Apr 4, 2013
Grant date	Aug 1, 2017
Priority date	—
Expiry date	May 31, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7922
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A valve element for a hydraulic control device, in particular valve sleeve (1) or valve housing for a control valve on internal combustion engines or transmissions of motor vehicles, wherein the valve element has a displaceable control piston (2) which is subjected to load on one side by a spring (3) which is supported on a spring support (4) which is fixed to the valve element. The spring support (4) has at least one opening (7) which is connected to a pressure medium line, and the pressure medium line is in the form of a pressure medium inlet line. An axial filter (8) is arranged at the opening (7) of the spring support (4) and/or the opening (7) of the spring support (4) is provided with a check valve (9).

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