Measuring and testing – Volume or rate of flow – Using differential pressure
Patent
1988-12-16
1991-02-19
Ruehl, Charles A.
Measuring and testing
Volume or rate of flow
Using differential pressure
G01F 122
Patent
active
049932691
ABSTRACT:
An apparatus for detecting fluid flow by obtaining a differential pressure across an obstruction in a fluid conveying channel. The obstruction is hingably connected to the housing of the channel. The connection is of a width substantially less than the periphery of the channel so as to reduce the collection of contaminants which decrease the accuracy of the apparatus. Because the orifice defined by the area between the obstruction and the periphery of the channel is variable according to the fluid flow, the pressure differential versus flowrate relationship is different from the square-law relationship of a fixed orifice, and provides a relatively high pressure differential at low flowrates and a relatively low pressure differential at high flowrates.
REFERENCES:
patent: 2892348 (1959-06-01), Ekstrom, Jr.
patent: 3403556 (1968-10-01), Koester
patent: 3759099 (1973-09-01), McGregor
patent: 3795145 (1974-03-01), Miller
patent: 3906792 (1975-09-01), Miller
patent: 3910112 (1975-10-01), Gerlach
patent: 3964310 (1976-06-01), Stenberg
patent: 4083245 (1978-04-01), Osborn
patent: 4112757 (1978-09-01), Hayward
patent: 4193301 (1980-03-01), Ferrentino
patent: 4235105 (1980-11-01), Walters
patent: 4304136 (1981-12-01), McCabe et al.
patent: 4350050 (1982-09-01), Nelson
patent: 4368646 (1983-01-01), Rogg
patent: 4474068 (1984-10-01), Knetsch et al.
patent: 4552027 (1985-11-01), Larner
patent: 4604902 (1986-08-01), Sabin et al.
patent: 4614122 (1986-09-01), Graves
patent: 4619139 (1986-10-01), Rosaen
patent: 4688433 (1987-08-01), Silverwater
patent: 4790194 (1988-12-01), Bellows et al.
DeVries Douglas F.
Guillaume Darrell W.
Norton Michael G.
Bird Products Corporation
Ruehl Charles A.
LandOfFree
Variable orifice flow sensing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Variable orifice flow sensing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable orifice flow sensing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1134110