Pumps – Motor driven – Including means utilizing pump fluid for augmenting cooling,...
Patent
1975-02-06
1976-05-18
Freeh, William L.
Pumps
Motor driven
Including means utilizing pump fluid for augmenting cooling,...
415178, F04B 1700
Patent
active
039574024
ABSTRACT:
A dewatering pump assembly for water pumping apparatus for pumping water from excavations or other holes in the ground and upwardly to a more or less remote discharge area. The apparatus finds particular utility for use, for example, by contractors, utility companies, or the like, and includes a power source, preferably mobile or easily transportable, such as an internal combustion engine or an electric motor or other power sources. A pressure fluid tank assembly and a pressure fluid pump is connected directly to the power source, and a water pump assembly is located down in the water at the bottom of the hole or excavation and includes a housing in which an impeller, a fluid motor, and the connecting drive shaft all are located. The fluid pressure pump which is driven directly by the power source is connected by long flexible conduits to the motor of the pump assembly. The pump assembly includes a heat exchanger which is secured on the lower end of assembly and the pressure fluid conduits act to convey a portion of the pressure fluid to and from the heat exchanger to thereby cool the pressure fluid. The heat exchanger is located strategically in the water being pumped to thereby efficiently transfer heat from the pressure fluid to the water being pumped.
REFERENCES:
patent: 1242961 (1917-10-01), Mansell et al.
patent: 1866846 (1932-07-01), Fink
patent: 2346372 (1944-04-01), Foottit
patent: 2593729 (1952-04-01), Coberly
patent: 3398694 (1968-08-01), Lerch
Freeh William L.
La Pointe G. P.
Nilles James E.
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