Pumps – Expansible chamber type – Elongated flexible chamber wall progressively deformed
Patent
1992-12-23
1994-01-25
Look, Edward K.
Pumps
Expansible chamber type
Elongated flexible chamber wall progressively deformed
604153, F04B 4308, F04B 4312
Patent
active
052811115
ABSTRACT:
An improved segmented peristaltic cartridge comprising a housing and a cover for assembly in snap-fit relation, said housing and cover defining a pumping chamber having an open segment therein wherein the pumping chamber holds a rotor, a rotor sleeve and a section of flexible tubing looped around the rotor and connected to respective inlet and outlet ports of the cartridge. Mounted on an exterior face of the housing is a safety shield which protects the tubing exposed in the open segment of the cartridge when the cartridge is inserted into a motor pump frame. The cartridge includes free standing walls on the cartridge housing engaging registration surfaces on the cartridge cover, an improved dowel pin structure and peripheral ribs on the rear cover and engaging a rear face of the rotor to minimize friction therebetween.
REFERENCES:
patent: 4559040 (1985-12-01), Morres et al.
patent: 5057081 (1991-10-01), Sunderland
patent: 5181842 (1993-01-01), Sunderland
patent: 5213483 (1993-05-01), Flamerty
Kramer Thomas A.
Plambeck Gregg E.
Abbott Laboratories
Korytnyk Peter
Look Edward K.
Thibault Harry G.
Wexler Robert E.
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