Pumps – Motor driven – Relatively movable pumping members driven by relatively...
Patent
1995-02-23
1997-03-11
Freay, Charles G.
Pumps
Motor driven
Relatively movable pumping members driven by relatively...
417 63, 417900, 417 53, 73239, F04B 3502
Patent
active
RE0354732
ABSTRACT:
A system for the transport of high solids sludge includes a positive displacement pump for pumping sludge through a pipeline. The volume of sludge transported is accurately measured by determining the fill percentage by using a material flow signal, measured time intervals, hydraulic fluid pressure, or hydraulic fluid flow rate during each pumping cycle.
REFERENCES:
patent: 3650638 (1972-03-01), Cole
patent: 4543044 (1985-09-01), Simmons
patent: 4781066 (1988-11-01), Pope et al.
patent: 4790728 (1988-12-01), Dwyer et al.
Anderson Thomas M.
Atherton Richard T.
Crow Harry K.
Fehn Berthold A.
Oakley Edward A.
Freay Charles G.
Schwing America, Inc.
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