Patent · US Expired

Flap valve having dual piston sealing rings

US7007926B2 · kind B2 · utility

1Cited by

19References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Peter Kohlen · Neu-Anspach, DE
Michael Rennen · Bad Soden, DE

Key dates

Filing date	Dec 20, 2004
Grant date	Mar 7, 2006
Priority date	—
Expiry date	Dec 20, 2024

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M26/70
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a valve comprised of a housing with a valve seat for a flap that is rotatably mounted on a drive shaft. The exterior of the flap is provided with a first piston sealing ring and a second piston sealing ring that are placed inside an encircling groove of the flap. Each sealing ring is provided in the form of a metal ring. The first ring has a first gap and the second ring has a second gap that are not aligned with one another. The invention also relates to the use of said valve.

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