Fluid handling – Liquid level responsive or maintaining systems – With second diverse control
Patent
1975-09-02
1978-02-14
Cohan, Alan
Fluid handling
Liquid level responsive or maintaining systems
With second diverse control
127 9, 127 46A, 137403, F16k 2118
Patent
active
040733106
ABSTRACT:
There is described a process and apparatus which compares the pressure at the interface between the upper surface of a granular bed and the liquid in which it is submerged with the pressure above the liquid to maintain a predetermined head of liquid above the bed irrespective of expansion and contraction of the bed.
REFERENCES:
patent: 2499917 (1950-03-01), Harper
patent: 3200971 (1965-08-01), Trethewey
patent: 3214293 (1965-10-01), Mountfort
patent: 3470902 (1969-10-01), Hackman
patent: 3757813 (1973-09-01), Levenberg
patent: 3835881 (1974-09-01), Dal et al.
Hecken Wilfried
Mikule Jiri
Cohan Alan
Industrial Filter & Pump Mfg. Co.
Patnaude Edmond T.
Walton G. L.
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