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:
Nov. 25, 1980
Filed:
Apr. 09, 1979
Applicant:
Inventors:
Jan I Bergstrom, Beloit, WI (US);
Richard E Hergert, Rockton, IL (US);
Assignee:
Beloit Corporation, Beloit, WI (US);
Primary Examiner:
Int. Cl.
CPC ...
D21F / ;
U.S. Cl.
CPC ...
162203 ; 162209 ; 162211 ; 162301 ; 162312 ; 162351 ; 162352 ;
Abstract
By imposing pressure pulses on mobile fibers in suspension in paper making stock slurry in the primary drainage area of the forming zone of a roll former substantially uniform distribution of the fibers is effected in forming of the paper web. A device for effecting the pressure pulses is located adjacent to the primary drainage area and may comprise a pressure pulse producing element of selected shape to control the length of the pressure pulse for the particular character of paper making fiber stock slurry involved in the paper web being formed.