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. 02, 1993
Filed:
Oct. 07, 1991
Richard E Hergert, Rockton, IL (US);
Richard R Hergert, Rockton, IL (US);
Eugene B Neill, South Beloit, IL (US);
Scott B Pantaleo, Beloit, WI (US);
Arnold J Roerig, Beloit, WI (US);
Thomas D Rogers, Roscoe, IL (US);
Jay A Shands, Beloit, WI (US);
Noriaki Takeguchi, Rockton, IL (US);
Beloit Technologies, Inc., Wilmington, DE (US);
Abstract
A headbox tube bank apparatus and method of directing flow through same is disclosed for permitting the flow therethrough of stock in a papermaking machine. The apparatus includes a tube bank frame for rigidly supporting the tube bank, the frame defining a plurality of openings. A plurality of tubes cooperate with the frame such that each tube extends through and is supported by an opening. Each tube has an upstream and a downstream portion, the upstream portion defining an internal cross-machine direction section of substantially circular configuration for maximizing the velocity of the stock through the tube. The downstream portion includes a first and a second end with the first end being connected to the upstream portion and the second end defining a downstream orifice having a flow area in a cross-machine direction which is of rectangular configuration for progressively improving the uniformity, stability, cleanliness, and for lowering turbulence of the stock during flow thereof through the downstream portion.