Variable discharge gear pump with energy recovery

Details Variable discharge gear pump with energy recovery Variable discharge gear pump with energy recovery

1987-07-29

1989-04-25

Freeh, William L.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

418189, F04C 2908, F04B 4902, F04B 4908

Patent

active

048243310

ABSTRACT:
Variable discharge and energy recovery is produced by an adjustable spool in fluid communication with the outlet chamber for adjustably providing pressurized fluid from the outlet chamber to selected portions of the demeshing area of the intermeshing teeth to vary the discharge flow of the pump and the amount of energy recovery. This results in maintaining a positive pressure in selected portions of the demeshing area as well as equalizing the pressure in the selected areas to the pressure in the outlet chamber.

REFERENCES:
patent: 1719025 (1929-07-01), Scheminger, Jr.
patent: 1912737 (1933-06-01), Svenson
patent: 1985748 (1934-12-01), Svenson
patent: 2481646 (1949-09-01), Conklin
patent: 2498790 (1950-02-01), Caughrean
patent: 2884864 (1959-05-01), Bobnar
patent: 3130682 (1964-04-01), Meads
patent: 3669577 (1972-06-01), Swanson
patent: 3817665 (1974-06-01), Myers
patent: 4017224 (1977-04-01), Jons
patent: 4130383 (1978-12-01), Moinuddin
patent: 4290739 (1981-09-01), Korse

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