Search International and National Patent Collections

1. (WO1999006633) PAPER FORMING ACTIVITY CONTROL WITH LIFTING VARIABLE ANGLE INERTIAL STIMULATION BLADES

Pub. No.:    WO/1999/006633    International Application No.:    PCT/US1998/012434
Publication Date: Feb 11, 1999 International Filing Date: Jun 11, 1998
IPC: D21F 1/20
D21F 1/48
Applicants: THERMO FIBERTEK INC.
Inventors: NEUN, John, A.
BACHAND, Jeffrey, P.
CARLTON, Keith
GROGAN, Daniel
Title: PAPER FORMING ACTIVITY CONTROL WITH LIFTING VARIABLE ANGLE INERTIAL STIMULATION BLADES
Abstract:
A papermaking apparatus such as a Fourdrinier table which includes a long blade (10) and a trail blade (14). In the first aspect of the invention, the long blade (10) includes an upper undulated surface (12) with vents (18) passing from the upper undulated surface (12) to the lower surface of the long blade (10) which is at substantially atmospheric pressure. In the second aspect of the invention, the trail blade (14) includes an elevator-type device (22) for adjusting the vertical position of the trail blade. In a third aspect of the invention, a single elevator (38) is used to adjust the angle of the blade, the blade is provided as a modular or multiple-piece design, mounting buttons (52) are used to engage slots of T-shaped cross section in the blade and/or ceramic inserts (62) are included at wear points.