Jeffrey Herman, Bala Cynwyld, PA
(US); Thomas Thoroe Scherb, Sao
Paulo (BR)
Voith Paper Patent GmbH,
Heidenheim (DE)
Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 428 days.
This patent is subject to a terminal disclaimer.
10/768,550
Jan. 30, 2004
Prior Publication Data
US 2005/0167066 Al Aug. 4, 2005
Int. CI.
D21F11/04 (2006.01)
U.S. CI 162/203; 162/204; 162/109;
162/303; 162/308; 8/115.51; 428/153
Field of Classification Search 162/203,
162/204, 109, 303, 308, 117, 113; 8/115.51 See application file for complete search history.
(56) References Cited
U.S. PATENT DOCUMENTS
4,191,609 A 3/1980 Trokhan
5,277,761 A 1/1994 Van Phan et al 162/109
5,503,715 A 4/1996 Trokhan et al 162/296
5,672,248 A 9/1997 Wendt et al 162/109
6,554,959 B2 * 4/2003 Von Paleske et al 162/109
2003/0102098 Al 6/2003 Allen et al 162/203
2004/0237210 Al * 12/2004 Thoroe-Scherb et al. .. 8/115.51
FOREIGN PATENT DOCUMENTS
WO WO 03/062528 7/2003
WO WO 03/083197 * 10/2003
* cited by examiner
Primary Examiner—Mark Halpern
(74) Attorney, Agent, or Firm—Taylor & Aust, PC.
(57) ABSTRACT
A method of forming a structured web including the steps of providing a fiber slurry through a headbox to a nip formed by a structured fabric and a forming fabric and collecting fibers from the fiber slurry in at least one valley of the structured fabric.
18 Claims, 8 Drawing Sheets
