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. 23, 2007
Filed:
Jul. 15, 2003
Applicant:
John Hawes, Averill Park, NY (US);
Inventor:
John Hawes, Averill Park, NY (US);
Assignee:
Albany International Corp., Albany, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
D21F 7/08 (2006.01); B32B 5/06 (2006.01); B32B 27/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A grooved perforated layer for use in a papermakers' fabric is provided. The grooves serve to diffuse flow at the surface of the perforated layer so as to reduce the pressure drop across the layer and thereby reduce the migration of fines. In this manner, the light/dark pattern associated with the fines is avoided and the quality of the resulting paper sheet is improved.