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:
Jun. 11, 1991
Filed:
Jun. 07, 1990
Applicant:
Inventors:
Dong D Nguyen, Lawrenceville, NJ (US);
Marvin L Harris, Lawrenceville, NJ (US);
Assignee:
Union Camp Corporation, Wayne, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F26B / ;
U.S. Cl.
CPC ...
34120 ; 226 97 ;
Abstract
Apparatus and methods for reducing the amplitude and frequency of web-edge flutter associated with drawing web materials are provided. The apparatus includes a pair of air foils disposed proximate to a pair of opposing planar surfaces of the web. Each of the air foils includes a first convex surface facing the web and disposed in contact with air flowing on the web for producing a venturi effect which reduces at least the flutter amplitude in the open draw.