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公开(公告)号：CA2441945C
公开(公告)日：2007-08-21
申请号：CA2441945
申请日：2002-04-09
Applicant: KADANT WEB SYSTEMS INC
Inventor： GOODNOW RONALD F , REID ROBERT A , BRAUNS ALLEN J
IPC: D21G3/00
Abstract: In a paper machine having a roll rotating about an axis extending in a cross machine direction, and having a doctor blade applied to the roll surface by a blade holder parallel to the axis and carried on a doctor back, an apparatus is provided for accommodating relative movement between the blade holder and the doctor back in the cross machine direction during mounting and removal of the blade holder. The apparatus comprises a rail fixed to the doctor back and extending longitudinally in the cross machine direction. A groove extends along the length of the guide rail. The groove has a bottom, a width measured between confronting sides, and a top defined by ledges projecting inwardly from the sides, with inner edges spaced one from the other to define a slot that underlies t he blade holder and has a width narrower than the width of the groove. A plurality of shafts are spaced along the length of the blade holder and project downwardly through the slot and into the groove. First and second independently rotatable elements are carried by eac h of the shafts. The first rotatable elements are located in the slot and are dimensioned to contact the inner edges of the ledges, and the second rotatable elements are located in the groove and are dimensioned to contact the undersides of theledges.
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公开(公告)号：CA2426008C
公开(公告)日：2007-07-03
申请号：CA2426008
申请日：2001-09-27
Applicant: KADANT WEB SYSTEMS INC
Inventor： MEHMOOD BILAL
IPC: D21G3/00
Abstract: A composite doctor blade comprises a steel support band configured with (Wa) a width and thickness (Ta) suitable for mounting in a blade holder, with tensile and yie ld strengths suitable for a selected doctoring application. A wear resistant strip of hig h speed steel is integrally joined to an edge of the support band. The wear resistant strip h as tensile and yield strengths higher than those of the support band, and has a hardness of between about 55 to about 65 Rc.
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公开(公告)号：DE60218647D1
公开(公告)日：2007-04-19
申请号：DE60218647
申请日：2002-04-09
Applicant: KADANT WEB SYSTEMS INC
Inventor： BRAUNS ALLEN J , REID ROBERT A , GOODNOW RONALD F
IPC: D21G3/00
Abstract: In a paper machine having a roll rotating about an axis extending in a cross machine direction, and having a doctor blade applied to the roll surface by a blade holder parallel to the axis and carried on a doctor back, an apparatus is provided for accommodating relative movement between the blade holder and the doctor back in the cross machine direction during mounting and removal of the blade holder. The apparatus comprises a rail fixed to the doctor back and extending longitudinally in the cross machine direction. A groove extends along the length of the guide rail. The groove has a bottom, a width measured between confronting sides, and a top defined by ledges projecting inwardly from the sides, with inner edges spaced one from the other to define a slot that underlies the blade holder and has a width narrower than the width of the groove. A plurality of shafts are spaced along the length of the blade holder and project downwardly through the slot and into the groove. First and second independently rotatable elements are carried by each of the shafts. The first rotatable elements are located in the slot and are dimensioned to contact the inner edges of the ledges, and the second rotatable elements are located in the groove and are dimensioned to contact the undersides of the ledges.
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公开(公告)号：CA2570040A1
公开(公告)日：2005-12-29
申请号：CA2570040
申请日：2005-06-09
Applicant: KADANT WEB SYSTEMS INC
Inventor： DRAPER MICHAEL , JAMES JOHN JR
IPC: D21G3/00
Abstract: A planar element for use in a papermaking machine comprising a synthetic construction incorporating nanoparticles in a polymeric resin matrix.
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公开(公告)号：ES2222739T3
公开(公告)日：2005-02-01
申请号：ES99953199
申请日：1999-10-15
Applicant: KADANT WEB SYSTEMS INC
Inventor： BRAUNS ALLEN J , JACKSON STACEY L
Abstract: Una cuchilla rascadora alargada que tiene un borde lateral configurado para la aplicación a la superficie de un rodillo giratorio en una máquina para fabricar papel, siendo dicha cuchilla rascadora una multicapa de material compuesto que comprende: a) un núcleo interno formado predominantemente por material polimérico termoplástico o termoestable que descansa sobre el eje neutro de dicha cuchilla; y b) capas intermedias en los lados opuestos de dicho núcleo, incluyendo dichas capas intermedias fibras de refuerzo, teniendo el borde lateral de dicha cuchilla rascadora una capacidad de abrasión, medida mediante el procedimiento de ensayo D5181-91 de la ASTM, de entre 4, 0 y 5, 0.
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Patent Agency Ranking
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公开(公告)号：DE69812174T2
公开(公告)日：2003-12-11
申请号：DE69812174
申请日：1998-12-18
Applicant: KADANT WEB SYSTEMS INC
IPC: D21G3/00
Abstract: An apatus for doctoring a roll in a paper machine, comprising a doctor blade and an integral blade holder including a support tray carrying fluid actuated tubes for applying the doctor blade to the roll. The blade holder is removably mounted on and releasably secured to the doctor back.
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公开(公告)号：ES2193600T3
公开(公告)日：2003-11-01
申请号：ES98963263
申请日：1998-12-18
Applicant: KADANT WEB SYSTEMS INC
Inventor： GOODNOW RONALD F , REID ROBERT A
IPC: D21G3/00
Abstract: An apatus for doctoring a roll in a paper machine, comprising a doctor blade and an integral blade holder including a support tray carrying fluid actuated tubes for applying the doctor blade to the roll. The blade holder is removably mounted on and releasably secured to the doctor back.
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公开(公告)号：BRPI0615763A2
公开(公告)日：2011-05-24
申请号：BRPI0615763
申请日：2006-09-05
Applicant: KADANT WEB SYSTEMS INC
Inventor： DRAPER MICHAEL , JAMES JOHN , ROTHERHAM JOHN
IPC: D21G3/00
Abstract: A planar element is disclosed for use in a papermaking machine. The planar element includes a composite of multiple layers, with at least some of the layers including resin impregnated fabrics including basalt fibers.
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公开(公告)号：BRPI0608939A2
公开(公告)日：2010-02-17
申请号：BRPI0608939
申请日：2006-03-20
Applicant: KADANT WEB SYSTEMS INC
Inventor： JOHNSON ROBERT P , REID ROBERT A , BRAUNS ALLEN J
IPC: D21G3/00
Abstract: A reciprocating doctor is provided for doctoring the cylindrical surface of a roll rotating about a first axis. The doctor includes a doctor back with a blade holder carrying a doctor blade. The doctor back has journals aligned on a second axis parallel to the first rotational axis of the roll. The journals are rotatably supported in sleeve bearings, and the sleeve bearings are in turn supported by diaphragms spaced along the second axis. The sleeve bearings are fixed axially on their respective journals, and the diaphragms have hub portions surrounding and fixed relative to the sleeve bearings, and peripheral portions surrounding the hub portions and fixed relative to a support structure. The diaphragms are configured to resiliently accommodate reciprocating movement of their hub portions and associated sleeve bearings relative to their peripheral portions and associated support structure. A first operating mechanism serves to rotate the doctor back about the second axis, and a second operating mechanism serves to impart reciprocating movement to the journals and their sleeve bearings along the second axis.
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