Pumps – Expansible chamber type – Elongated flexible chamber wall progressively deformed
Patent
1972-12-19
1976-01-06
Husar, C. J.
Pumps
Expansible chamber type
Elongated flexible chamber wall progressively deformed
128215, 222 79, F04B 4308, A63H 318, A61M 500
Patent
active
039307611
ABSTRACT:
A peristaltic pump comprising a portable housing capable of being held in the hand and which carries means defining an elongated surface, a tube leading past the housing in contact with the elongated surface that includes near one end of the housing, a non-return valve that allows fluid to flow only in the direction that leads away from the housing, the tube being a flexible tube along at least that part of its length in contact with the elongated surface, a roller which is reciprocable along the flexible tube, means for squeezing the tube against the surface by the roller and thereby closing the tube and for moving the roller along the tube towards the non-return valve while thus squeezing the tube, means for continuously biasing the roller away from the non-return valve and means to withdraw the roller from said tube during or subsequent to its return to its initial position whereby the flexible tube returns substantially to its normal configuration.
REFERENCES:
patent: 401950 (1889-08-01), Hausmann
patent: 424944 (1890-04-01), Allen
patent: 2527614 (1950-10-01), Arpin
patent: 3318482 (1967-05-01), Voce
patent: 3353537 (1967-11-01), Knox
patent: 3649138 (1972-03-01), Clay
patent: 3674024 (1972-07-01), Cirillo
patent: 3786683 (1974-01-01), Berman et al.
Gluck Richard E.
Husar C. J.
The Boots Company, Ltd.
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