Measuring and testing – Volume or rate of flow – Using differential pressure
Reexamination Certificate
2004-04-13
2008-12-16
Patel, Harshad (Department: 2855)
Measuring and testing
Volume or rate of flow
Using differential pressure
C073S202000
Reexamination Certificate
active
07464611
ABSTRACT:
A differential pressure system and a gas meter arrangement for precisely measuring a gas consumption by a gas meter is provided. A previously known gas meter is disposed in a bypass comprising a differential pressure system in the gas pipe for measuring a volumetric flow rate inside the gas pipe. The differential pressure system includes flow ducts having decreasing diameters as the radial position increases starting from a central axis of the differential pressure system. Examples of execution include inlet ports and/or outlet ports of the flow ducts which are provided with a specific countersink angle (α), and an equidistant, concentric arrangement of flow ducts on the cross-sectional area of the differential pressure system. This has the advantage of increasing the differential pressure at a low volume flow rate, reducing the differential pressure at a high volume flow rate, and generally creating an improved linearity across the entire measurement range between the volume flow rate in the bypass and the volume flow rate in the gas pipe, among other advantages.
REFERENCES:
patent: 2929248 (1960-03-01), Sprenkle
patent: 3250469 (1966-05-01), Colston
patent: 3314294 (1967-04-01), Colston
patent: 3838598 (1974-10-01), Tompkins
patent: 3840051 (1974-10-01), Akashi et al.
patent: 4961344 (1990-10-01), Rodder
patent: 5341848 (1994-08-01), Laws
patent: 5672821 (1997-09-01), Suzuki
patent: 5750892 (1998-05-01), Huang et al.
patent: 5804717 (1998-09-01), Lucas
patent: 5869758 (1999-02-01), Huiberts
patent: 5918279 (1999-06-01), Hecht et al.
patent: 5942683 (1999-08-01), Aoi et al.
patent: 6073483 (2000-06-01), Nitecki et al.
patent: 6145544 (2000-11-01), Laharpe et al.
patent: 6186179 (2001-02-01), Hill
patent: 6601460 (2003-08-01), Materna
patent: 6655207 (2003-12-01), Speldrich et al.
patent: 6963809 (2005-11-01), Matter et al.
patent: 1 469 648 (1977-04-01), None
patent: 62112014 (1987-05-01), None
patent: 1654661 (1991-06-01), None
patent: WO 01/96819 (2001-12-01), None
Kleiner Thomas
Kramer Beat
Matter Daniel
EMS-Patent AG
Marshall & Melhorn LLC
Patel Harshad
LandOfFree
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