Variable performance pump

Details Variable performance pump Variable performance pump

1976-11-02

1978-01-24

Freeh, William L.

Rotary kinetic fluid motors or pumps

With control means responsive to non-cyclic condition...

Temperature or fluid force responsive member

415131, 415140, F01D 700

Patent

active

040701328

ABSTRACT:
This case relates to a variable performance pump wherein the width of the impeller in a centrifugal pump can be regulated while the unit is operating. The impeller's width is regulated by the pump pressure and is controlled by a small external valve. The pump performance may be varied over a wide range to obtain constant head, constant capacity or other desired pumping characteristics.

REFERENCES:
patent: 1837887 (1931-12-01), Schmidt
patent: 2341985 (1944-02-01), Green
patent: 2358744 (1944-09-01), Stepanoff
patent: 2927536 (1960-03-01), Rhoades
patent: 2957454 (1960-10-01), Brundage et al.
patent: 2992617 (1961-07-01), Kroeger
patent: 3003313 (1961-10-01), Bunger
patent: 3228656 (1966-01-01), Kyogoku
patent: 3365120 (1968-01-01), Jassniker
patent: 3407740 (1968-10-01), Samerdyke
patent: 3499388 (1970-03-01), Eberhardt
patent: 3806278 (1974-04-01), Grennan
patent: 3918831 (1975-11-01), Grennan

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