Single acting pump with double acting drive

Details Single acting pump with double acting drive Single acting pump with double acting drive

1986-07-17

1988-08-09

Freeh, William L.

Expansible chamber devices

With guide or seal on cylinder end portion for piston or...

184 5, 417534, 74 44, F04B 3902, F04B 2306, F16C 2302

Patent

active

047620510

ABSTRACT:
A pump assembly (10) is disclosed which incorporates a double acting power end (12) to operate opposed single or double acting pumps (84, 102). First and second crossheads (30, 64) are reciprocated along the pumping axis (38) by rotation of the crankshaft (20) within the power end (12). A single acting pump is connected to each of the crossheads so that the pumping stroke of the pumps occur in opposite directions as the crossheads are reciprocated. This provides a constant loading of the power end in compression to most efficiently use the power end while realizing the advantages of using single acting pumps. The crossheads are guided for motion along the pumping axis by adjustable cradles (40, 46, 70, 72) which are initially secured to the frame of the pump assembly for limited motion and the crossheads reciprocated through their range of motion to align the cradles with the crossheads and subsequently rigidly secure the frame in the aligned positions as by fastening assemblies (52).

REFERENCES:
patent: 1419457 (1922-06-01), Joyner
patent: 1743908 (1930-01-01), Anderson
patent: 2331513 (1943-10-01), Stahl
patent: 2771037 (1956-11-01), Johnston
patent: 3616701 (1971-11-01), Decker et al.
patent: 3779088 (1973-12-01), Miller
patent: 4477237 (1984-10-01), Grable

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