Piston pump with discharge valve, inlet valve and misalignment c

Details Piston pump with discharge valve, inlet valve and misalignment c Piston pump with discharge valve, inlet valve and misalignment c

1980-04-28

1983-01-25

Vrablik, John J.

Pumps

With condition responsive pumped fluid control

Expansible chamber pump distributor operation modified

417558, F04B 2102, F04B 4902

Patent

active

043701035

ABSTRACT:
A piston pump mechanism for use in positive pressure and vacuum pumping systems for pumping various gases such as air, freon, natural gas, etc. The pump mechanism incorporates an inlet and discharge valve system that substantially eliminates any unpurged or unswept volume of gas within a pump cylinder during each reciprocating stroke of the pump piston. The pump mechanism also incorporates a control spool that floats within a pump head and has a sealed flexible interconnection with the discharge valve that allows the discharge valve to seek optimum seating engagement about the entire periphery of the cylinder. The valve control spool may be pressure balanced or controllably unbalanced, as desired, for influence of the discharge valve. The spool also provides for inlet of gas to an inlet valve that may be incorporated into the discharge valve.

REFERENCES:
patent: 737809 (1903-09-01), Whitaker
patent: 758183 (1904-04-01), Kryszat
patent: 947536 (1910-01-01), Wenkel
patent: 2327269 (1943-08-01), Jessup

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