Patent · US Active

Pressure control valve device

US9157539B2 · kind B2 · utility

2Cited by

10References

11Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Karlheinz Mayr · Zell im Wiesental, DE
Markus Moosmann · Grünkraut, DE
Frank Hamma · Markdorf, DE
Hubert Remmlinger · Friedrichshafen, DE

Key dates

Filing date	Nov 27, 2012
Grant date	Oct 13, 2015
Priority date	—
Expiry date	Aug 1, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/87217
WIPO fieldControl
WIPO sectorInstruments

Abstract

A pressure-control valve device for a fluid, having at least one inlet area and first and second outlet areas that can be flow-connected to one another by two seat valves coupled to one another, in which a fluid flow from the inlet area to the first and second outlet areas can be adjusted by the first seat valve and a fluid flow between the first and second outlet areas can be adjusted by the second seat valve. The first seat valve is designed as a valve aperture with a valve opening and a valve control edge and with a ball-shaped closing element that co-operates with the valve control edge. The valve opening and the ball-shaped closing element are designed such that the ratio of the diameter of the valve opening to the diameter of the ball-shaped closing element is equal to at least 0.75.

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