Patent · US Active

Control valves for controlling pressure medium flows

US8839820B2 · kind B2 · utility

3Cited by

9References

14Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Jens Hoppe · Erlangen, DE
Andreas Roehr · Heroldsbach, DE
Michael Busse · Herzogenaurach, DE

Key dates

Filing date	Jan 28, 2010
Grant date	Sep 23, 2014
Priority date	—
Expiry date	Oct 25, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/86702
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A control valve for controlling pressure medium flows, which has a cylindrical valve housing with a housing cavity The housing cavity is open at one side and has an axial outflow port, a radial first working port, a radial second working port, a radial third working port and two radial pressure ports which each open into the housing cavity. A first pressure port is arranged axially between the first working port and the second working port, and a second pressure port is arranged axially between the second working port and the third working port. Also, the control valve has a cylindrical control piston, which is axially movable within the housing cavity and has a piston cavity open at one side in the direction of the outflow port.

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