Measuring and testing – Volume or rate of flow – Using differential pressure
Reexamination Certificate
2011-08-30
2011-08-30
Patel, Harshad (Department: 2855)
Measuring and testing
Volume or rate of flow
Using differential pressure
C073S861520, C137S487500
Reexamination Certificate
active
08006572
ABSTRACT:
A differential-pressure flow meter is capable of easily eliminating adhesion to an orifice of an extraneous material. The differential-pressure flow meter includes: a pair of pressure sensors provided on a straight pipe part of a main fluid channel; an orifice unit interposed between the pair of pressure sensors; a columnar orifice body provided on the main fluid channel to be detachable in a direction orthogonal to a flow direction of a fluid in the main fluid channel; and an orifice hole penetrating the orifice body in the flow direction of the fluid, wherein the orifice body is rotatable at a prescribed installation position to reverse an upstream side and a downstream side with respect to the orifice hole, and flow rate measurement is performed by converting into a flow rate a difference in pressure that is obtained from two pressure values sensed respectively by the pair of pressure sensors.
REFERENCES:
patent: 3026727 (1962-03-01), Spurling
patent: 3610286 (1971-10-01), McGowen et al.
patent: 5474103 (1995-12-01), Klak
patent: 5672832 (1997-09-01), Cucci et al.
patent: 5816285 (1998-10-01), Ohmi et al.
patent: 6539968 (2003-04-01), White et al.
patent: 2004/0083807 (2004-05-01), Mudd et al.
patent: 2006/0231149 (2006-10-01), Kulkarni
patent: 2007/0016333 (2007-01-01), Edwards et al.
patent: 2007/0089788 (2007-04-01), Chinnock et al.
patent: 2009/0229377 (2009-09-01), Ushigusa et al.
patent: 1 912 105 (2008-04-01), None
patent: 05-233068 (1993-09-01), None
patent: 11183213 (1999-07-01), None
Communication (Extended European Search Report) dated Oct. 10, 2009 issued Oct. 6, 2009 by the European Patent Office in related European Application No. 09163470.9 (5 pages).
Lucas & Mercanti LLP
Michal Robert P.
Patel Harshad
Surpass Industry Co. Ltd.
LandOfFree
Differential-pressure flow meter and flow-rate controller does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Differential-pressure flow meter and flow-rate controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential-pressure flow meter and flow-rate controller will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2623148