Hydraulic energy-conversion device

Details Hydraulic energy-conversion device Hydraulic energy-conversion device

1985-11-05

1988-02-02

Vrablik, John J.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

417311, 418 60, 418 63, 137529, 137538, F04B 4902, F04B 4908, F04C 246, F16K 1704

Patent

active

047226722

ABSTRACT:
A device capable of functioning as a fluid pump or motor has a related hydraulic circuit controlling the relationship of the case pressure to the pressure in high-pressure port. The arrangement thus limits the operating pressure effective on the seal system. The preferred form incorporates the hydraulic circuit within the body of the device.

REFERENCES:
patent: 43204 (1864-06-01), Harrison
patent: 1684274 (1928-09-01), Hinds
patent: 1969999 (1934-08-01), Cuthbert
patent: 2743674 (1956-05-01), Shaw
patent: 2819729 (1958-01-01), MacGregor
patent: 3150603 (1964-09-01), Yarger
patent: 3191403 (1965-06-01), Ladusaw
patent: 3791780 (1974-02-01), Fritch et al.
patent: 3981641 (1976-09-01), D'Amato

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