Reciprocating pump for pumping viscous materials

Details Reciprocating pump for pumping viscous materials Reciprocating pump for pumping viscous materials

1994-02-17

1995-12-26

Bertsch, Richard A.

Pumps

Expansible chamber type

Moving cylinder

417519, F04B 1902

Patent

active

054782171

ABSTRACT:
A positive displacement pump is disclosed having a pump body, a cylinder member rotatably accommodated within the pump body and a piston member within the cylinder member. At least a portion of the cylinder member is rotatable about the cylinder axis in step with the reciprocal motion of the piston relative to the cylinder. The rotatable portion of the cylinder has as least one flow port which communicates with the working volume of an intake or discharge port for material being pumped. The rotatable portion of the cylinder preferably has two flow ports, one which will communicate with the intake port and the other which will communicate with the discharge port.

REFERENCES:
patent: 1295211 (1919-02-01), Riedler
patent: 1568170 (1926-01-01), Le Bret
patent: 2163817 (1937-12-01), Johnson
patent: 2529457 (1950-11-01), Nilsson
patent: 2553162 (1951-05-01), Bancroft
patent: 2865292 (1958-12-01), Raibaud
patent: 3302752 (1967-02-01), Shiokawa
patent: 3967612 (1976-07-01), Yamada
patent: 4036326 (1977-07-01), Mukai et al.
patent: 4231716 (1980-11-01), Kubota et al.
patent: 4797073 (1989-01-01), Kubota

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