Pneumatic bladder pump having stiffness symmetry

Details Pneumatic bladder pump having stiffness symmetry Pneumatic bladder pump having stiffness symmetry

1976-01-09

1978-08-01

Croyle, Carlton R.

Pumps

Motor driven

Fluid motor

417478, 285281, F04B 4308, F04B 4310, F04B 4506

Patent

active

041040058

ABSTRACT:
A compact blood pump includes a flexible bladder mounted within a rigid metal housing. Pneumatic pulses between the bladder and the housing produce pumping action in association with appropriate inlet and outlet valves. The bladder is configured to provide a stiffness characteristic which produces a recurring three lobe collapse pattern during pumping operation. Inlet and outlet passages to the bladder are associated with detachable seal rotatable fluid conduits in fluid-tight relationship to the bladder. The conduits are attachable and rotatable without transmitting torque to the flexible bladder.

REFERENCES:
patent: 723042 (1903-03-01), Schwerin
patent: 1976415 (1934-10-01), Scott
patent: 3062153 (1962-11-01), Losey
patent: 3218979 (1965-11-01), Baldwin
patent: 3286878 (1966-11-01), Schadt et al.
patent: 3550162 (1970-12-01), Huffman et al.
patent: 3814547 (1974-06-01), Kitralakis et al.
Marks' Mechanical Engineers' Handbook, Baumeister (editor), McGraw-Hill Book Co. Inc., 1958, Chp. 5, pp. 63-65.

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