Patent · US Active

Central valve for pivot motor actuator

US9194506B2 · kind B2 · utility

2Cited by

7References

8Claims

0Family size

Assignee

Hilite Germany GmbH · DE

Inventors

Stefanie Hutzelmann · Mainburg, DE
Jan Kroepelin · Seelze, DE
Dietmar Schulze · Kandern, DE

Key dates

Filing date	Apr 18, 2014
Grant date	Nov 24, 2015
Priority date	—
Expiry date	Aug 14, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7765
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a central valve for a pivot motor actuator. A housing tube of the central valve includes radial recesses for operating connections. A piston of the central valve has a center position. In the center position both radial recesses are covered by annular bars of the piston towards the tank drain connection by overlaps. Thus, pressure spikes from the operating connections to the check valves are strongly throttled.

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