Patent · US Active

One piece double membrane diaphragm valve

US8695636B2 · kind B2 · utility

4Cited by

14References

12Claims

0Family size

Assignee

Norgren Limited · DE

Inventors

Daniel Kuhnle · Beilstein, DE
Stefan Pfund · Winnenden, DE

Key dates

Filing date	Mar 15, 2006
Grant date	Apr 15, 2014
Priority date	—
Expiry date	Jan 10, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/86895
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A one piece double membrane diaphragm including an upper (308) and lower diaphragm membrane (310) joined together by a central section (312) is provided. The upper diaphragm membrane (308) seals against a top sealing surface (222) when the diaphragm is in a first position. The lower diaphragm membrane (310) seals against a bottom sealing surface (224) when the diaphragm is in a second position. The diaphragm may also be made from a resilient material and shaped in such a way as to create a spring force holding the diaphragm into a default position in the valve.

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