Patent · US Active

Electromagnetic valve

US8387946B2 · kind B2 · utility

5Cited by

3References

4Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Calin Petru Itoafa · Hochstädt, DE
Andreas Kufner · Erlangen, DE

Key dates

Filing date	May 25, 2011
Grant date	Mar 5, 2013
Priority date	—
Expiry date	Sep 5, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K31/0693
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An electromagnetic valve, which has a magnet armature chamber, a pressure medium chamber, a pressure medium inlet channel and a pressure medium outlet channel respectively connected to the pressure medium chamber, a valve seat, and a valve closure member that, upon bearing contact on the valve seat, blocks the connection between the pressure medium inlet channel and the pressure medium outlet channel, and a valve guide extending between the magnet armature chamber and the pressure medium chamber. A sealing ring made of a polymer, which surrounds the valve closure member and separates the magnet armature chamber from the pressure medium chamber, extends between the valve closure member and the valve guide. The geometric design of the sealing ring to the valve guide provides wear resistance for the sealing ring.

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