Reversible pump with positive valving

Details Reversible pump with positive valving Reversible pump with positive valving

1975-10-30

1977-04-12

Freeh, William L.

Pumps

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

Radial cylinders

91476, F04B 104, F01B 1306

Patent

active

040172201

ABSTRACT:
A radial three cylinder cam actuated piston pump progressively transfers fluid through each cylinder in sequence from inlet to outlet via two open ports in each cylinder head and inter connecting ducts; during one-third of a cam actuation cycle one resiliently padded piston top is actuated to dwell pressed against its cylinder head to close its ports and provide positive valving and prevention of back flow; a second similar piston is actuated to eject fluid from its cylinder; and a third similar piston is retracted to receive fluid into its cylinder; each of the three pistons is sequentially actuated in these three phases during one cam cycle to constitute a pumping cycle delivering one cylinder of fluid per cam revolution; the symetrical cam system allows reversibility of flow and prevents back flow in either direction when rotation is stopped.

REFERENCES:
patent: 924280 (1909-06-01), Sharpneck
patent: 1574976 (1926-03-01), Ingram
patent: 1647309 (1927-11-01), Rex
patent: 2461121 (1949-02-01), Markham
patent: 2530337 (1950-11-01), McGogy
patent: 3036557 (1962-05-01), Kimsey

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