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:
Feb. 19, 2002
Filed:
Sep. 08, 2000
Applicant:
Inventors:
John J. Egan, III, Centerville, OH (US);
David E. Suica, Carmel, IN (US);
Assignee:
Thermo Black Clawson Inc., Middletown, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21C 9/00 ; B07B 1/18 ;
U.S. Cl.
CPC ...
D21C 9/00 ; B07B 1/18 ;
Abstract
Pressure type screening apparatus for screening papermakers' stock and method of use is disclosed. Screen ( ) has an inlet screening surface ( ) and an outlet surface (unlabled). Pressure transducers (not shown) vary the fluid pressure on the inlet surface of the screen ( ) from a maximum to a minimum, and also vary the fluid pressure on the outlet surface of the screen ( ) from a minimum to a maximum at a repetitive cyclic rate. The amplitude of such pressures is such that flow reversal occurs through the screen ( ) and any fiber mat that tends to form on the inlet surface ( ) is disrupted or fluidized.