Radial piston pump with vent in hollow piston

Details Radial piston pump with vent in hollow piston Radial piston pump with vent in hollow piston

1994-06-17

1995-01-24

Bertsch, Richard A.

Pumps

Three or more cylinders arranged in parallel, radial, or...

Radial cylinders

91491, 92 82, F04B 104

Patent

active

053837703

ABSTRACT:
A vibration and noise free pump is disclosed. The pump includes a plurality of cylinders in radial arrangement about an axis. A piston is slidably supported in each of the cylinders. Each of the pistons has a vent opening in addition to a set of inlet openings to admit escape of liquid out of its piston inner chamber into a well with the piston in the compression stroke. With the provision of the vent opening, a surge pressure in each of the pistons has been reducedsed.

REFERENCES:
patent: 3125034 (1964-03-01), Lucien et al.
patent: 4363607 (1982-12-01), Eichele et al.
patent: 5167493 (1992-12-01), Kobari

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