Patent · US Expired

Flap valve

US6659427B2 · kind B2 · utility

5Cited by

6References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Erwin Krimmer · Plüderhausen, DE
Ralph Krause · Waiblingen, DE
Peter Baur · Monsheim, DE
Christian Lorenz · Hamburg, DE
Klaus Kaiser · Markgröningen, DE

Key dates

Filing date	Dec 9, 2002
Grant date	Dec 9, 2003
Priority date	—
Expiry date	Dec 9, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K1/221
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In a flap valve for controlling a gas flow, with a valve tube (11) that carries the gas flow and with a valve flap (14) that is pivotable in the valve tube (11) and that in its closing position rests sealingly with its outer contour on the inner wall of a flexible thin-walled tube (20) disposed coaxially in the valve tube (11), and with a valve shaft (15) connected to the valve flap (14) in a manner fixed against relative rotation, it is provided, in order to attain a sensitive adjustment of the valve flap (14) and for the sake of technologically simple, inexpensive production of the flap valve (14), that the valve shaft (15) is positioned at an acute angle (&ggr;) relative to the valve plane, and the thin-walled tube (20) is formed directly and integrally onto the valve tube (11) (FIG. 2).

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