Pumps – Expansible chamber type – Elongated flexible chamber wall progressively deformed
Patent
1979-02-28
1980-11-11
Gluck, Richard E.
Pumps
Expansible chamber type
Elongated flexible chamber wall progressively deformed
417477, 422 82, F04B 4312, F04B 4508
Patent
active
042330017
ABSTRACT:
A peristaltic pump having an array of compressible tubes in parallel substantially coplanar relationship with each other. A cylindrical rotor assembly including a series of equally spaced rollers around its periphery is located adjacent one side of the array of tubes, and a resiliently mounted platen assembly is located adjacent the other side of the array in position to urge the tubes into contact with the rollers. The platen assembly is provided with a first arcuate ledge portion which defines a first pair of spaced occlusion points and a second arcuate ledge portion which defines a second pair of spaced occlusion points. An additional compressible tube containing air or other segmentizing fluid extends between the rotor and the first ledge portion, it is then directed back in the opposite direction between the rotor and the second ledge portion, and it then proceeds externally with respect to the rotor and platen assembly with the downstream end of the additional tube connected to a junction point in open communication with one of the tubes in the array. As the rotor assembly rotates, it progressively occludes each of the tubes in the array as well as the additional tube over the entire distance between the first pair of spaced points, to pump the first fluid and the segmentizing fluid through their respective tubes, and it also periodically occludes the additional tube between the second pair of spaced points, to periodically introduce the segmentizing fluid to the junction point in timed relation to the flow of the first fluid. The segmentizing fluid is introduced during the intervals when there is a continuous flow of the first fluid past the junction point.
REFERENCES:
patent: 2797149 (1957-06-01), Skeggs
patent: 2865303 (1958-12-01), Ferrari et al.
patent: 2893324 (1959-07-01), Isreeli et al.
patent: 2935028 (1960-05-01), Ferrari et al.
patent: 3101674 (1963-08-01), Weiskopf et al.
patent: 3167397 (1965-01-01), Skeggs
patent: 3306229 (1967-02-01), Smythe
patent: 3588281 (1971-06-01), Isreeli
patent: 4049381 (1977-09-01), Burns
Gluck Richard E.
Peerless Electronics Research Corporation
Robinson, Jr. Lee C.
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