Pumps – Expansible chamber type – Elongated flexible chamber wall progressively deformed
Patent
1976-06-23
1977-11-29
Croyle, Carlton R.
Pumps
Expansible chamber type
Elongated flexible chamber wall progressively deformed
417477, F04B 4308, F04B 4312, F04B 4506
Patent
active
040603482
ABSTRACT:
A rotary roller pump for carrying out sequential pumping of fluid in separate squeezable tubings comprises a stator and a rotor which is provided at opposite ends with rollers, for respective engagement with the tubings, and is so mounted that a gap is provided between an inwardly facing seating of the stator which part-surrounds the rotor, and the rollers for accommodating the tubings which are to be arranged substantially parallel to each other and so as to extend in the general circumferential direction. Each roller comprises two cylindrical and co-axial parts having different diameters such that, with the tubings so accommodated and arranged, the cylindrical part having the larger diameter engages one of the tubing placed between that cylindrical part and the inwardly facing seating in such manner as to exert a pumping action on that tubing when the rotor rotates, whereas the cylindrical part having the smaller diameter does not exert a pumping action on the remaining tubing.
REFERENCES:
patent: 1741070 (1929-12-01), Oliveras
patent: 2909125 (1959-10-01), Daniels
patent: 3039442 (1962-06-01), Hornschuch et al.
patent: 3429273 (1969-02-01), Jones
patent: 3737251 (1973-06-01), Berman et al.
patent: 3876340 (1975-04-01), Thomas
patent: 3985134 (1976-10-01), Lissot et al.
Bioengineering Research S.A.
Croyle Carlton R.
Ross Thomas I.
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