Pumps – Expansible chamber type – Mechanically actuated distributor
Patent
1981-12-02
1984-02-14
Gluck, Richard E.
Pumps
Expansible chamber type
Mechanically actuated distributor
417532, 417900, F04B 1502
Patent
active
044313861
ABSTRACT:
A pump assembly for concrete comprises a hopper adapted to hold the mass and having a front wall formed with a front port centered on a front axis perpendicular to the front wall at the front port and a rear wall formed with two rear ports centered on respective rear axes perpendicular to the rear wall at the rear ports and generally parallel to the front axis. Respective piston pumps secured to the rear wall outside the hopper over the rear ports can draw portions of the mass out of the hopper and expel the drawn-out portions back into the hopper through the respective rear ports. An outlet conduit is connected to the front wall outside the hopper over the front port. A generally curved or nonstraight distributor pipe in the hopper has a front end engaged over and aligned with the front port, a rear end engageable over and alignable with either of the rear ports, and a generally arcuate centerline crossing the front axis at the front port and extending parallel to the rear axes at the rear wall. The distributor pipe can be pivoted about the front axis between a position with the rear end aligned with and engaged over one of the rear ports and the other rear port exposed in the hopper and another position with the rear end aligned with and engaged over the other rear port and the one rear port exposed in the hopper. The pipe can be wholly curved between its front and rear ends, with the centerline smoothly arcuate, or it can be formed of two straight portions joined at an elbow.
REFERENCES:
patent: 3832097 (1974-08-01), Schlect
patent: 3989420 (1976-11-01), Taylor
patent: 4178142 (1979-12-01), Schwing
Fehler Jurgen O.
Geue Franz-Hubert
Griesbach Rolf
Cuomo Peter M.
Dubno Herbert
Elba-Werk Maschinen-Gesellschaft mbH & Co.
Gluck Richard E.
Ross Karl F.
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