Patent · US Active

Central valve for pivot motor actuator

US9322419B2 · kind B2 · utility

3Cited by

1References

17Claims

0Family size

Assignee

Hilite Germany GmbH · DE

Inventors

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

Key dates

Filing date	Mar 25, 2014
Grant date	Apr 26, 2016
Priority date	—
Expiry date	Aug 3, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/87217
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A central valve for a pivot motor actuator, the central valve including a housing tube including a first operating connection, a supply connection, a second operating connection and a tank drain connection; a piston enveloped by the housing tube and moveable relative to the housing tube, wherein the first operating connection is connected with the supply connection and the second operating connection is connected with the tank drain connection in a first position of the piston, wherein the piston is positioned in a center position in a second position, and wherein the second operating connection is connected with the supply connection and the first operating connection is connected with the tank drain connection in a third position of the piston, wherein the piston includes at least one first check valve on its outside.

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