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:
Mar. 25, 2003
Filed:
Nov. 01, 2001
Lynn E. Jensen, Clearfield, UT (US);
Fresenius USA, Inc., Lexington, MA (US);
Abstract
An improved flow control device for regulating the flow of liquid or gas through a length of flexible-conduit using a generally enclosed rack and pinion assembly engaged by an external slidable assembly or switch. The case has a lower rack with a surface supporting a length of flexible conduit, opposing walls, and an upper surface. The lower rack has at least one rack track along which a pinion gear assembly may be engaged and rotated. The pinion gear assembly has a cylinder shaft capped on at least one end by a pinion gear with radiating teeth. The pinion gear assembly can be rotated along a portion of the flexible conduit, compressing it at one or more positions. Operation of the flow control device can be accomplished using a single hand, and the case remains enclosed without subjecting the pinion gear assembly to an external environment.