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:
Jan. 12, 1999
Filed:
Dec. 04, 1996
Applicant:
Inventors:
Layne L Moen, Flagstaff, AZ (US);
James T Walter, Flagstaff, AZ (US);
Assignee:
W. L. Gore & Associates, Inc., Newark, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B28B / ; B26F / ; B32B / ;
U.S. Cl.
CPC ...
428131 ; 428137 ; 428910 ; 428421 ; 428422 ; 4283166 ; 4283044 ; 4283179 ; 428323 ; 2642888 ; 264156 ; 264118 ; 264127 ; 2642356 ; 2642358 ; 264175 ; 264291 ; 156229 ; 15624411 ; 15624418 ;
Abstract
A macroscopically perforated porous expanded polytetrafluoroethylene sheet material having a microstructure of nodes interconnected by fibrils wherein the perforations have a minimum diameter of about 0.1 mm and wherein the orientation of a fibril varies as a function of the proximity of a fibril to the edge of a perforation. The length of the fibrils may also vary as a function of the proximity of a fibril to the edge of a perforation. The sheet material may alternatively be provided in a tubular form.