Pumping of high viscosity materials

Details Pumping of high viscosity materials Pumping of high viscosity materials

1987-02-20

1989-10-24

Freeh, William L.

Pumps

Successive stages

Reciprocating rigid stages

417489, F04B 500, F04B 2100

Patent

active

048758337

ABSTRACT:
A vane pump in which the ports for passage of highly viscous material pumped are widely dimensioned and the clearances, in particular around the rod which carries the vane, are great. The invention applies to the pumping of materials of the type having a base of butyl rubber and/or polyisobutylene, and in general of materials exhibiting a viscosity greater than 35,000 poises.

REFERENCES:
patent: 2136636 (1938-11-01), Rotter
patent: 2636441 (1953-04-01), Woelfer
patent: 2787225 (1957-04-01), Rotter
patent: 2925941 (1960-02-01), Bloxom
patent: 3160105 (1964-12-01), Sherman et al.
patent: 3312178 (1967-04-01), Rotter et al.
patent: 3995966 (1976-12-01), Blancha
patent: 4014629 (1977-03-01), Elsworth
patent: 4591316 (1986-05-01), Vadasz Fekete
patent: 4679989 (1987-07-01), Harriman

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