Patent · US Expired

Bushing for a hydraulic valve

US7121553B2 · kind B2 · utility

7Cited by

4References

13Claims

0Family size

Assignee

Hydraulik-Ring GmbH · DE

Inventors

Marius Cornea · Lohr am Main, DE
Bernd Weigand · Lohr am Main, DE

Key dates

Filing date	Apr 30, 2004
Grant date	Oct 17, 2006
Priority date	—
Expiry date	Jun 3, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/8671
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A bushing for a hydraulic valve has a bushing wall having openings allowing passage of a hydraulic medium to and from an interior of the bushing. The openings have an opening wall that at least across a portion of a circumference of the opening wall is formed as a molded bevel. The molded bevel is positioned at an acute angle to a radial plane of the bushing wall. The bushing wall has outer annular channels and the openings open into the outer annular channels, respectively.

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