Device for regulating the flow rate in a tube

Details Device for regulating the flow rate in a tube Device for regulating the flow rate in a tube

1985-01-18

1986-11-04

Schwadron, Martin P.

Fluid handling

Systems

Plural noncommunicating flow paths

251 4, 604250, 137601, F16L 5514

Patent

active

046205640

ABSTRACT:
A device for regulating the flow rate in the tube, e.g. in infusion- and transfusion assemblies. The flow rate can be regulated by twisting a portion of the tube by means of a twisting device. The tube comprises at least along the portion of its length which is intended to be twisted a plurality of separate or communicating flow passages. Between said flow passages there are provided distance members arranged about or forming an inner core in the tube about which the tube is twisted and which reduces compression of the tube. When the tube is twisted the free space between said distance members is gradually reduced in the twisted cross-section of the tube and by that a reduction of the flow area is obtained.

REFERENCES:
patent: 2516029 (1950-07-01), Swindin
patent: 2569850 (1951-10-01), Falconer
patent: 2781059 (1957-02-01), Frey
patent: 3062239 (1962-11-01), O'Neill
patent: 3322147 (1967-05-01), Barrows
patent: 3720235 (1973-03-01), Schrock
patent: 4292969 (1981-10-01), Raible et al.
SU-943-457, Ivan, Q66.
SU-706-634, Rozi, Q66.

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