Double acting concrete pump

Details Double acting concrete pump Double acting concrete pump

1978-03-13

1979-11-20

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

91341R, 91348, 417900, F04B 1700, F04B 1502, F01L 2300

Patent

active

041749286

ABSTRACT:
A double acting concrete pump having a pair of interconnected mud pistons driven by a reversing hydraulic actuator, which is reversed by the piston motion at the end of each stroke, and has a pressure relief to avoid bottoming at the end of a stroke. The mud pistons slide in cylinders which are lubricated and cleaned by a supply of lubricant circulated between the cylinders by the piston action. Concrete or similar mud-like material is drawn from a hopper and pumped out through a common outlet.

REFERENCES:
patent: Re2256 (1866-05-01), Thatcher
patent: 1729430 (1929-09-01), Machtolf
patent: 2169703 (1939-08-01), Mason
patent: 2187972 (1940-01-01), Hollander
patent: 2349150 (1944-05-01), Falasconi
patent: 3064582 (1962-11-01), Knights
patent: 3146721 (1964-09-01), Scwing
patent: 3279383 (1966-10-01), Smith

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