Patent · US Expired

Assembly having a spring-loaded tandem control valve

US6802339B2 · kind B2 · utility

1Cited by

7References

8Claims

0Family size

Assignee

Framatome ANP · DE

Inventors

Hermann-Josef Conrads · Herzogenaurach, DE
Erwin Laurer
Jurgen Model · Erlangen, DE

Key dates

Filing date	Aug 26, 2003
Grant date	Oct 12, 2004
Priority date	—
Expiry date	Aug 26, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/777
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The fitting, in particular a safety valve, operates according to the relief principle or according to the loading principle. The fitting is opened and closed by a plurality of control parts. The control parts are connected in series in the control line of the fitting and are each actuated by a control valve. The control parts open the fitting only when all the control parts are in a position which opens the fitting. The fitting closes as soon as even only one of the control parts is in a position which closes the fitting.

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