The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 1981
Filed:
Sep. 20, 1979
Albert F Bujan, Waukegan, IL (US);
Abbott Laboratories, North Chicago, IL (US);
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.