Pumps – Motor driven – Relatively movable pumping members driven by relatively...
Patent
1984-06-15
1985-08-06
Gluck, Richard E.
Pumps
Motor driven
Relatively movable pumping members driven by relatively...
417517, 417900, F04B 1502
Patent
active
045333009
ABSTRACT:
Concrete is transmitted from a hopper forming a part of a mobile concrete pumping apparatus to the deposit site through a flow line having a Y-pipe inlet. The pumping apparatus includes two piston-cylinder concrete pumps mounted in side-by-side relationship adjacent the hopper, which has an auger to rapidly charge a pump with concrete through one of two discharge pipes. Each pump is pivotally mounted, to locate the cylinder aligned with the discharge pipe or with one inlet of the Y-pipe inlet. Each pump has a valve plate pivoting with the cylinder to alternately close the hopper opening and the inlet line. Hydraulic cylinder units are coupled to the valve plates to pivot the pumps. A floating valve plate has coupling pipes attached to the hopper and a hydraulic cylinder urges the same into sliding sealing engagement with the rotating valve plate. The pumps are individually, alternately and oppositely positioned for charging and discharging, with a common discharge period at the end of the one pump unit and start of the other pump unit.
REFERENCES:
patent: 2033338 (1936-03-01), Kirby
patent: 2442916 (1948-06-01), Buchanan
patent: 3298322 (1967-01-01), Sherrod
Read Wayne L.
Westerlund Robert E.
Gluck Richard E.
Westerlund Robert E.
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