Patent · US Active

Valve arrangement

US8701706B2 · kind B2 · utility

1Cited by

7References

9Claims

0Family size

Assignee

ABB TECHNOLOGY AG · CH

Inventors

Matthias Schmidt · Munich, DE
Franz KORBER · Mallersdorf, DE

Key dates

Filing date	May 17, 2012
Grant date	Apr 22, 2014
Priority date	—
Expiry date	May 17, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/87209
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Exemplary embodiments relate to a valve arrangement for actuating a piston cylinder arrangement, that includes a pilot control valve arrangement and a main control valve arrangement, wherein both the pilot control and main control valve arrangement include a 3/2-way valve as a pilot control valve and as a main control valve. Each valve has a control-pressure, high-pressure, and low-pressure connection. Said connections are connected to each other such that the main control valve is controlled via the control-pressure connection of the pilot control valve and the pressures on the control-pressure connection of the pilot control valve and the pressures on the control-pressure connection and on the high-pressure connection of both valves, are statically inverted relative to each other. The 3/2-way valves are designed as seat valves and are only hydraulically connected to each other.

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