The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7389791 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 24, 2008

Filed:

Dec. 05, 2003
Applicant:

Martin Fangmeier, Auggen, DE;

Inventor:

Martin Fangmeier, Auggen, DE;

Assignee:

Neoperl GmbH, Mullheim, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 17/18 (2006.01);
U.S. Cl.
CPC ...
Abstract

A backflow preventer () having a mounting housing () that is inserted into a fluid conduit () is provide and includes at least one sealing ring () which is supported within an annular groove () located on the outer circumference of the mounting housing () and has a sealing effect between the mounting housing () and the fluid conduit (). The backflow preventer provides that the sealing ring () can be moved counter to a restoring force from a sealing position into a leakage position so as to compensate pressure when the backflow preventer () is closed and a fluid volume is sealed on the outflow side, thereby conteracting an excessive increase in internal pressure.


Find Patent Forward Citations

Fangmeier, Martin. (2008). Backflow preventer (U.S. Patent No. 7389791). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7389791

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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