Flow control device

Valves and valve actuation – Tube compressors – Pivoting tube contacting element

Patent

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Details

251 6, 251 7, F16K 706, A61M 514

Patent

active

042854920

ABSTRACT:
An improved clamp for regulating the flow of fluid through a length of flexible tubing comprises a clamp body for supporting the tubing, having opposing walls extending from the surface of the clamp body so as to present a passage for the flexible tubing. A platen is mounted between the walls for contacting the tubing. Guide surfaces are arranged in the walls with a roller positioned within the guide surfaces. The platen is movably positioned between the roller and the flexible tubing so as to present a compression surface against the tubing along the path of travel of the roller. The combination of the platen and the roller exerts a compressive force against the tubing and distributes the force over a wide area of the tubing so as to prevent permanent deformation of the tubing. This compressive force constricts the tubing and thereby regulates flow of liquid therethrough. The improvement comprises a second roller also positioned within the clamp body, so as to exert an additional compressive force upon the platen and thereby against the tubing. As a result through use of the first and second rollers, separate controls are provided for coarse and fine regulation of the flow of liquid through the tubing.

REFERENCES:
patent: 2595511 (1952-05-01), Butler
patent: 2865038 (1958-12-01), Versteeg
patent: 3099429 (1963-07-01), Broman
patent: 3497175 (1970-02-01), Koland
patent: 3960149 (1976-06-01), Bujan
patent: 3967349 (1976-07-01), Christensen
patent: 4191359 (1980-03-01), Andersson

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