Pumps – Combined
Patent
1990-11-09
1992-03-10
Bertsch, Richard A.
Pumps
Combined
417207, F04B 3906
Patent
active
050945939
ABSTRACT:
In a heating and recirculating system for a tank of chemical fluid, the recirculation pump is preceded by a heating element housed in the distal half of a tubular housing mounted coaxially within the pipe feeding the pump. The fluid is uniformly heated as it circulates through the annular channel defined between the pipe and the heating element housing.
REFERENCES:
patent: 4537345 (1985-08-01), Brown
patent: 4640667 (1987-02-01), Trepp
patent: 4776767 (1988-10-01), Motomura
patent: 4936289 (1990-06-01), Peterson
Bertsch Richard A.
Charmasson Henri J. A.
Freay Charles
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