Patent · US Active

Electromagnetic actuating unit

US8490654B2 · kind B2 · utility

3Cited by

9References

6Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Jens Hoppe · Erlangen, DE
Andreas Roehr · Heroldsbach, DE

Key dates

Filing date	Oct 19, 2009
Grant date	Jul 23, 2013
Priority date	—
Expiry date	Jun 13, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/86702
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A hydraulic directional control valve which has a valve housing and a control piston that is arranged therein in a displaceable manner. The valve housing has at least one outflow connection, at least one inflow connection and a working connection. The control piston has a main body and at least one control section. The control section controls a pressure medium flow from the inflow connection to the working connection and/or a pressure medium flow from the working connection to the outflow connection, and the control section is made separately from the main body and is fastened thereon.

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