Means for controlling fluid flow

Details Means for controlling fluid flow Means for controlling fluid flow

1976-01-19

1978-01-03

Schwardron, Martin P.

Valves and valve actuation

Tube compressors

Roller tube contacting element

251 4, 251 7, F16K 704

Patent

active

040662381

ABSTRACT:
The invention provides means for controlling the flow of fluids such as parenteral fluids. It comprises a body and flexing means. The body defines a passageway with opposed flexible walls which can be held in contact throughout their cross-section except for a limited region of which the cross-section varies along the body. The limited region may be formed by tapered grooves in the walls. The flexing means retains the body flexed so that the walls thereof are held in contact over a localized area of limited axial length, due at least partly to the internal stresses set up in the body arising from its flexure. The body is movable lengthwise relative to the flexing means to alter the position of the localized area and thus to alter the rate of fluid flow through the body.

REFERENCES:
patent: 3103335 (1963-09-01), Martinez
patent: 3779507 (1973-12-01), Clarke

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