Oscillatory pump for the transport of viscous materials

Details Oscillatory pump for the transport of viscous materials Oscillatory pump for the transport of viscous materials

1979-03-19

1980-03-18

Gluck, Richard E.

Pumps

Expansible chamber type

Oscillating pumping member

417519, 417900, 92120, F04C 2100, F04B 1502

Patent

active

041937430

ABSTRACT:
A piston pump for the transport of viscous materials and, in particular, concrete, includes a housing having defined therein an annular-shaped working space, a piston slidably mounted within the annular-shaped working space for oscillatory movement, and a pressure conduit and a suction conduit, each of which is communicative with the working space. The pump also includes control means having a member which is disposed in the annular-shaped working space for connecting the portion of the working space, which lies in front of the moving piston, to the pressure conduit and for simultaneously connecting the portion of the working space which lies back of the moving piston, to the suction conduit. In addition, the pump includes means for reversibly driving the piston so that it moves in an oscillatory manner in the annular working space, reversing its direction when it nears the member of the control means.

REFERENCES:
patent: 3667653 (1972-06-01), Loewenthal
patent: 3807908 (1974-04-01), Rossi

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