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:
Jul. 06, 1993
Filed:
Dec. 04, 1991
Heinz Braun, Ravensburg, DE;
Alfred Bubnik, Ravensburg, DE;
Herbert Holik, Ravensburg, DE;
Rudiger Kurtz, Immenstaad/B., DE;
Heinz Steckenreuter, Ravensburg, DE;
Helmut Stieb, Schlier-Oberankenroute, DE;
Jurgen Zenz, Baienfurt, DE;
Sulzer-Escher Wyss GmbH, Ravensburg, DE;
Abstract
A twin screen paper forming apparatus is provided having upper and lower screens moving in a first direction and wrapping around a portion of a leading forming roller positioned at the beginning of a forming zone where the upper and lower screens converge to form a twin screen. At least one stationary forming element is positioned downstream of the leading forming roller to contact with the lower screen. A water guide element is also located in the region of the forming zone approximately at the start of the forming zone. At least one forming rail contacts the upper screen and a pulp suspension discharge nozzle is positioned, to prevent preliminary draining, upstream of the location where the upper and lower screens converge.