Pumps – Expansible chamber type – Elongated flexible chamber wall progressively deformed
Patent
1976-12-16
1979-11-13
Croyle, Carlton R.
Pumps
Expansible chamber type
Elongated flexible chamber wall progressively deformed
F04B 4308, F04B 4312, F04B 4506
Patent
active
041741935
ABSTRACT:
A liquid transfer pump in which a flexible hose may be arranged along the internal peripheral wall of a semicircular external enclosure and a drive shaft which is rotated by a motor or the like is provided at a position with the equal distance from the internal peripheral wall and a plurality of squeeze rollers which travel around the drive shaft in accordance with rotation of the drive shaft while rolling around their own axis and squeeze out the liquid in the flexible hose while depressing the flexible hose against the internal peripheral wall to transfer the liquid from one position to another position is rotatably supported by a holder fixed to the drive shaft, wherein the internal peripheral wall of the external enclosure is slanted and the external peripheral surfaces of the squeeze rollers opposite to the internal peripheral wall are made parallel with the internal peripheral wall.
REFERENCES:
patent: 487136 (1892-11-01), Truax
patent: 3396669 (1968-08-01), Everett
patent: 3762836 (1973-10-01), De Vries
patent: 3955902 (1976-05-01), Kyvsgaard
Croyle Carlton R.
Ross Thomas I.
Senko Medical Instrument Mfg. Co. Ltd.
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