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. 30, 2007
Filed:
Oct. 24, 2001
Applicant:
Frey Frejborg, Queensbury, NY (US);
Inventor:
Frey Frejborg, Queensbury, NY (US);
Assignee:
Advanced Fiber Technologies, Lennoxville, CA;
Primary Examiner:
Int. Cl.
CPC ...
B07B 1/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A screen cylinder () used for screening cellulosic fibrous material pulp in the pulp and paper industry incorporates first () and second () downstream surfaces () having contoured slopes that form a funnel entrance of the grooves () at the screen cylinder slots (). The contoured construction of the screen cylinder () effects greatly enhanced utility compared to conventional milled and discrete element screen cylinders, including substantially avoiding the Coanda effect.