In-line fluid pump and shuttle valve therefor

Details In-line fluid pump and shuttle valve therefor In-line fluid pump and shuttle valve therefor

1981-10-09

1984-01-03

Freeh, William L.

Pumps

Expansible chamber type

Distributor moved by separate fluid responsive surface

417517, 417518, 92107, F04B 702, F01B 3100

Patent

active

044240120

ABSTRACT:
An annular piston is received within a suitably dimensioned cylinder and reciprocally driven to pump fluid on both piston strokes to a fluid carrying line with which the pump is arranged in an in-line relationship. A centrally located shuttle-valve alternately opens and closes ports at opposite ends of the pump cylinder to accomplish the required in-line valving for the pump.

REFERENCES:
patent: 217965 (1879-07-01), Waring
patent: 268675 (1882-12-01), Hilliker
patent: 345384 (1886-07-01), Knapp
patent: 676778 (1901-06-01), Spence et al.
patent: 1441508 (1923-01-01), Jensen et al.
patent: 1985642 (1934-12-01), Moody
patent: 2930360 (1960-03-01), Yando
patent: 3320902 (1967-05-01), Paschke

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