Patent · US Expired

Two-part flap valve

US7159844B2 · kind B2 · utility

0Cited by

16References

6Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

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

Key dates

Filing date	Dec 16, 2003
Grant date	Jan 9, 2007
Priority date	—
Expiry date	Mar 11, 2024

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M35/10222
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A valve having a housing with a valve seat for a two-piece flap which is rotatably mounted on a drive shaft. An annular piston seal and an adjacent cover disk are disposed between the first part and the second part of the two-piece flap so as to revolve there-around. The diameter of the cover disk is smaller than the diameter of the annular piston seal which is embodied as a metal ring that is provided with a gap. The invention also relates to the use of said valve as a gas recirculation valve.

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