Priming piston pump piston check valve

Details Priming piston pump piston check valve Priming piston pump piston check valve

1990-04-11

1992-09-15

Bertsch, Richard A.

Pumps

Expansible chamber type

Mechanically actuated distributor

417513, 417520, F04B 702

Patent

active

051471884

ABSTRACT:
A reciprocating priming piston pump is provided with a piston check valve which provides improved performance by minimizing the pressure drop there through. A dog-bone shaped seat is slideably located inside a piston which in turn slides inside the cylinder of the pump. The piston is restrained at one end by seating upon the valve seat and its outer end by contact with the displacement rod. Rounded surfaces on the valve seat contribute to smooth flow and a slotted guide fingers in the upper end of the piston allow ample flow into the upper chamber from the lower chamber.

REFERENCES:
patent: 1696007 (1928-12-01), Lewis et al.
patent: 2591969 (1952-04-01), Sawchuk
patent: 2655287 (1953-10-01), Campbell
patent: 2674956 (1954-04-01), Hilton
patent: 2787225 (1957-04-01), Rotter
patent: 2804825 (1957-09-01), Mansfield et al.
patent: 3082693 (1963-03-01), Budzich
patent: 3312178 (1967-04-01), Rotter et al.
patent: 3523745 (1970-08-01), Rich
patent: 4137017 (1979-01-01), Lonardo

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