Fluid handling – Systems – Tank with movable or adjustable outlet or overflow pipe
Patent
1973-12-03
1976-02-03
Cline, William R.
Fluid handling
Systems
Tank with movable or adjustable outlet or overflow pipe
13710127, 73215, G01F 1100
Patent
active
039358810
ABSTRACT:
An apparatus for steady-state volume rate flow control from a variable depth liquid having a floating weir assembly of the type with an inlet weir crest over which liquid may flow from said weir crest to a discharge opening through which liquid may flow from said weir. In one form, the weir assembly has a pressure responsive flow control means. When said pressure responsive flow control means is active, said means opposes the buoyancy of said floating weir to position said inlet crest of said weir at a selected distance below the surface of said variable depth liquid independent of the depth of said liquid to establish a steady-state volume rate of liquid flow from said weir. At other times, when said pressure responsive control means is inactive, the buoyancy of said floating weir positions said inlet crest of said weir above the surface of said variable depth liquid independent of the depth of said liquid to establish a zero rate of liquid flow from said weir. A preferred weir assembly has an open-topped circular weir crest, with its circular edge concentric with a first horizontal axis, and with the weir crest supported at one end of a vertically swinging support arm which has its other end arranged for support and swinging movement around a parallel second horizontal axis.
REFERENCES:
patent: 1108090 (1914-08-01), Barieau
patent: 1456743 (1923-05-01), Szabo
patent: 2116422 (1938-05-01), Anderson
patent: 3031011 (1962-04-01), Dawson et al.
patent: 3342069 (1967-09-01), Brewer
patent: 3593980 (1971-07-01), McHenry
patent: 3595269 (1971-07-01), Yeagle
Boler Leonard J.
Desnick Mandel L.
Cherne Industrial, Inc.
Cline William R.
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