Pumps – Motor driven – Fluid motor
Patent
1983-07-28
1985-05-07
Gluck, Richard E.
Pumps
Motor driven
Fluid motor
417474, 138 45, 138119, F04B 4310, F04B 4312
Patent
active
045155364
ABSTRACT:
A peristalitic pump comprising a pump housing accommodating a hose. A hollow space surrounding the hose is provided between the outer wall of the hose and the pump housing. The ends of the hose are sealingly attached all around to corresponding supply and discharge ends of the pump housing. The pump housing is provided with connecting tubes for supplying a pressure medium to the hollow space and discharging the medium therefrom, in order to exert pressure at desired points of time on the outer wall of the hose. The hose has an elliptic cross-sectional form adjacent the supply end along a given trajectory. Starting from the supply end, which is circular in cross-section, the hose becomes gradually flatter and broader to give a minimal value and sequentially in the direction of the hose portion extending toward the discharge end become increasingly less flat and broad in the same manner until the circular cross-section is obtained. The hose has a constant wall thickness along the entire length between the supply end and the discharge end and a constant inner circumferential length of the cross-section.
REFERENCES:
patent: 3039309 (1962-06-01), Vesper et al.
patent: 3406633 (1968-10-01), Schomburg
patent: 4250872 (1981-02-01), Tamari
Gluck Richard E.
Lavine Irvin A.
Noord-Nederlandsche Machinefabriek B.V.
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