F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
103/30
F04B 43/12 (2006.01) F04B 43/00 (2006.01) F04B 43/10 (2006.01)
Patent
CA 1086567
ABSTRACT OF THE DISCLOSURE The present invention provides a pump comprising a tubular casing fluid inlet means at one end of said casing, fluid outlet means at the other end of said casing, a tubular support member positioned in said casing in substantial axial alignment therewith, an elastic pumping member disposed about the outer surface of said tubular support member, pump means for expanding and contracting said elastic pumping member so that it alter- nately expands and seals against the inner surface of said tubular casing and contracts back to said tubular support member, and a fluid flow path through said tubular support member which connects said inlet means to said outlet means, said fluid flow path being fluidly connected to a volumetric area which is partially defined by at least a portion of the exterior of the elastic pumping member which is disposed closest to the one end of the casing, and which volumetric area fluidly communicates with the fluid inlet means. Pumps made in accordance with the teachings of this invention can thus be of sufficiently small diameter that they can be relatively easily inserted through the bung hole of drums for pumping fluid out of such drums.
297518
Marcus & Associates
Sealed Air Corporation
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