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:
Dec. 12, 2006
Filed:
Mar. 05, 2001
Applicant:
J. Robert Prough, Glens Falls, NY (US);
Inventor:
J. Robert Prough, Glens Falls, NY (US);
Assignee:
Andritz Inc., Glens Falls, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A vessel is constructed with (preferably substantially stationary) screen surfaces which minimize compaction of comminuted cellulosic fibrous material, and allow springback of the material, as it flows downwardly. A slurry of wood chips, sawdust, or pulp is passed downwardly past one or more screen surfaces, which have a number of parts, including at least a first perforated part through which liquid is extracted, and a substantially solid part substantially immediately adjacent and below the first part which has a step out to relieve compaction and allow springback of the material.