Patent · US Active

Device for driving a double seat valve capable of seat cleaning

US8469055B2 · kind B2 · utility

1Cited by

8References

30Claims

0Family size

Assignee

GEA Tuchenhagen GmbH · DE

Inventors

Jens Burmester · Grambek, DE
Matthias Suedel · Ratekau, DE

Key dates

Filing date	Sep 19, 2008
Grant date	Jun 25, 2013
Priority date	—
Expiry date	Aug 13, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/88038
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A device for driving a double seat valve with two closing elements arranged in series and displaceable with respect to each other. A sleeve-shaped fourth drive piston pressurized by pressure medium, sealingly embraces a second drive piston on the circumference and can engage a catching connection in the direction of a first drive piston, wherein a second drive piston is adapted to be axially displaceable in a limited manner in both directions with respect to the first drive piston and in each case against the force of a second spring.

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