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:
Sep. 18, 1984
Filed:
Sep. 23, 1982
Stephen Kocanowski, Middlesex, NJ (US);
Whitman Medical Corporation, Clark, NJ (US);
Abstract
An intravenous flow control valve includes in-line valving mechanism wherein flow through the valve at low flow settings increases slowly with displacement of a valve controller disc. The disc, which is free to rotate with respect to an axis but is longitudinally fixed, includes a threaded stem which engages a threaded bore and a sluice gate member. The gate member is permitted to move only longitudinally in a valve control chamber in response to disc rotation and includes a control passage defined therethrough which tapers in the direction of gate member motion so as to graduate the cross-sectional area of the passage exposed to flow as the disc rotates. A locking arrangement permits the disc to be positionally locked to avoid inadvertent change of the valve setting. The disc and stem provide an hermetic seal for the valve control chamber to avoid contamination of the intravenous fluid being controlled.