Prefabricated Assembled Surface Sections Or Parts Patents (Class 241/298)
  • Patent number: 10888868
    Abstract: A center plate for a rotor in a pulp refiner has a surface provided with at least one feeding wing for directing lignocellulose-containing material towards a periphery. The feeding wing is an elongated protrusion arranged such that its second end is arranged further away from a center of the center plate than a first end and also is displaced relative to the first end in a direction opposite to a direction of rotation of the rotor. The center plate is also provided with at least one counter-feeding wing for directing steam flowing along the surface towards the center of the center plate. The counter-feeding wing is an elongated protrusion arranged such that a second end of the counter-feeding wing is arranged further away from the center of the center plate than a first end and closer to the center of the center plate than the first end.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: January 12, 2021
    Inventor: Thommy Lindblom
  • Patent number: 10675630
    Abstract: A refiner plate segment with a continuous transition zone spanning from the periphery or near the periphery of the plate in a substantial spiral toward the axis of rotation of the plate adjacent the breaker bar zone.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: June 9, 2020
    Assignee: Andritz Inc.
    Inventor: Luc Gingras
  • Patent number: 10279495
    Abstract: An apparatus for slicing food product to produce food product slices. The apparatus includes a circular cutting head having an axis and at least one knife assembly on the circumference of the cutting head, and a knife extending axially inward and having a corrugated shape to produce a food product slice with a periodic shape characterized by peaks and valleys. At least one component securing the knife to the cutting head has a surface facing radially inward and a corrugated shape shaped differently than the corrugated shape of the knife to minimize surface contact between unsliced food products and the cutting head.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: May 7, 2019
    Assignee: Urschel Laboratories, Inc.
    Inventors: Michael Scot Jacko, Daniel Wade King
  • Patent number: 9902080
    Abstract: An apparatus for slicing food product to produce food product slices. The apparatus includes a rotatable cutting wheel having two or more knife assemblies. Each knife assembly includes a knife extending radially between a hub and rim of the cutting wheel. The knife has a leading edge facing a direction of rotation of the cutting wheel and a large-amplitude corrugated shape characterized by peaks and valleys. The knife is secured to the hub and rim with a knife holder, and a clamp secures the knife to a first surface of the knife holder. The knife holder and knife are configured to provide continuous and accurate alignment of an individual food product throughout the slicing thereof by the knife of each knife assembly to produce food product slices with a generally parallel-cut cross-section having a uniform thickness and a large-amplitude periodic shape with an amplitude of 0.1 inch or greater.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: February 27, 2018
    Assignee: Urschel Laboratories, Inc.
    Inventors: Enrique Michel, John Poole Hildebrand, Keith Alan Barber, Michael Scot Jacko, Daniel Wade King
  • Patent number: 9718064
    Abstract: A vertical and horizontal mills and discs therefor for grinding particles to submicron size. The mills include two overlapping vertical barrels. Each barrel has a shaft and a plurality of circular discs attached to the shaft disposed in each barrel for grinding materials to submicron size. The discs have an open mesh design provided by overlapping rectangular blades. Each blade has at least two opposing walls orthogonal to a plane defined by the disc. Each disc on one shaft overlaps a disc on the other shaft by from 30 to 45% of the diameter of the discs. An inlet is provided for feeding material to be ground by the mill to the overlapped portion of the discs. An outlet is disposed at an end of the mill opposite the inlet for removing ground material from the mill.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: August 1, 2017
    Inventor: Bill H. Ranne
  • Patent number: 9517572
    Abstract: Apparatuses for cutting food product are provided having a cutting head. The cutting head includes one or more knife assemblies. Each knife assembly includes a knife extending toward the food product and is adapter to secure the knife to the cutting head. The knife has a corrugated shape to produce a food product slice with generally parallel cuts wherein the food product slice has a periodic shape and a large-amplitude cross-section.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: December 13, 2016
    Assignees: Urschel Laboratories, Inc., Frito-Lay North America Inc.
    Inventors: Enrique Michel, John Poole Hildebrand, Keith Alan Barber, Michael Scot Jacko, Daniel Wade King
  • Patent number: 9267234
    Abstract: A refiner (1, 2, 3) for refining fibrous material. And a blade element (18) for a refiner (1, 2, 3) intended for refining fibrous material. The blade element (18) having a refining surface (18?), which has blade bars (21, 23) and blade grooves (22, 24) between them. The top surface of at least one blade bar (21, 23) is provided with refining grits (25). The blade element (18) has portions (29, 30) forming a protruding part extending away above the refining surface (26a, 26b) and above the blade bars (21, 23) or the refining grits (25) on the refining surface.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: February 23, 2016
    Assignee: Valmet Technologies, Inc.
    Inventors: Juha-Pekka Huhtanen, Vesa Harju, Markku Partanen, Olli Tuovinen, Petteri Vuorio
  • Patent number: 9181654
    Abstract: A set of plate segments for refining comminuted cellulosic material including: a first plate segment and a second plate segment, wherein the first plate segment and the second plate segment each have a refining side configured to oppose the refining side on the other segment, and each of said refining sides includes a refining zone having bars and grooves between adjacent ones of the bars, wherein distance between the grooves in the first plate segment and the grooves in the second plate segment is substantially constant along an arc through the refining zone while the set is mounted to discs in a refiner.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: November 10, 2015
    Assignee: Andritz Inc.
    Inventor: Luc Gingras
  • Publication number: 20140339348
    Abstract: A light weight plate segment configured to be mounted on a disc of a disperser or refiner for comminuted cellulosic material including: a front face having disperser teeth or refining bars; a back face having a raised post surrounding a fastener attachment structure and a raised plate positioning section; side edges of the plate segment; and a radially outer edge and a radially inner edge extending between the side edges; wherein the back face lacks raised structures along the side edges.
    Type: Application
    Filed: April 17, 2014
    Publication date: November 20, 2014
    Applicant: ANDRITZ INC.
    Inventors: MIKAEL REHNSTROM, Ismo Ihalainen, Yves Raymond
  • Publication number: 20140217223
    Abstract: A cast metal plate segment for a refiner of lignocellulosic material or a disperser of comminuted paper or packaging products, the plate segment including a front side with a front surface configured to refine the lignocellulosic material or disperge the comminuted paper or packaging products, and a back side, opposite to the front side, including a corner or edge, wherein the corner or edge comprises a casted surface between machined planar surfaces adjacent the corner or edge.
    Type: Application
    Filed: January 31, 2014
    Publication date: August 7, 2014
    Applicant: Andritz Inc.
    Inventors: Luc Gingras, Yves Raymond
  • Patent number: 8769800
    Abstract: A process for making spare parts for refiners used for producing paper, in particular for making refiners for preparing paper pulps, where the pulp enters at one end and exits on the other side, passing through a rotary body or rotor or male component equipped with bars (or grooves) and a casing or stator or female component bearing fixed counter-bars. This process includes mechanical machining of unmachined sectors; routing or mechanical machining of the machined sectors to obtain a set of bars or grooves or holes; putting together the cone (rotor or stator by joining all of the sectors to the supporting flanges; mechanical machining (turning and grinding) to finish the cone; and balancing of the rotor or stator.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: July 8, 2014
    Assignee: Officine Airaghi S.R.L.
    Inventor: Luca Ghibellini
  • Publication number: 20140110511
    Abstract: Refiner plate segments and refiner plates having fully dammed or partially dammed grooves on a major surface that may control flow behavior of lignocellulosic materials passing between refining plates in a refiner. The dammed grooves form groove segments, and each groove segment has a length of no more than about 30 mm or a subrange thereof.
    Type: Application
    Filed: October 2, 2013
    Publication date: April 24, 2014
    Applicant: ANDRITZ INC.
    Inventor: Peter ANTENSTEINER
  • Publication number: 20140091163
    Abstract: The present disclosure provides a refining disc or a segment thereof, comprising a base composed of a cast iron and teeth composed of a metal carbide composite, which teeth protrude from the base, wherein the teeth are partially embedded in the base. A disc refiner comprising a first and a second disc composed of such discs or segments, said first and second discs being arranged such that the teeth of the first disc face the teeth of the second disc as well as a method of disintegrating a material using such as disc refiner are also provided.
    Type: Application
    Filed: April 4, 2012
    Publication date: April 3, 2014
    Applicant: CELLWOOD MACHINERY AB
    Inventor: Peter Ek
  • Publication number: 20140077016
    Abstract: A refiner plate segment with a continuous transition zone spanning from the periphery or near the periphery of the plate in a substantial spiral toward the axis of rotation of the plate adjacent the breaker bar zone.
    Type: Application
    Filed: September 5, 2013
    Publication date: March 20, 2014
    Applicant: Andritz Inc.
    Inventor: Luc GINGRAS
  • Patent number: 8671546
    Abstract: A refiner plate carrier for use in refining lignocellulosic material including a mounting mechanism for mounting to a refiner plate segment and not a rotor or stator disk. The combined plate carrier and refiner plate segment may be then attached to a refiner disk. The refiner plate carrier need not provide structural support to the segment during lignocellulosic refining.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: March 18, 2014
    Assignee: Andritz Inc.
    Inventors: Luc Gingras, George Reynolds
  • Patent number: 8602336
    Abstract: A heavy duty rotary disc-type wood chipper containing a knife clamping system that conducts the impact and shearing loads acting upon the chipper knives along two primary axes which allows for more efficient dissipation of the impact loads and a reduction in the deleterious effects of off-axis loads resulting in the ability to use smaller holding bolts and smaller knives in the system without adversely effecting either the ability of the knives to stay fixed to the disc or the quality of chips produced.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: December 10, 2013
    Assignee: CEM Machine, Inc.
    Inventors: Scott J. Boliver, Daniel McBride
  • Publication number: 20130320119
    Abstract: A set of plate segments for refining comminuted cellulosic material including: a first plate segment and a second plate segment, wherein the first plate segment and the second plate segment each have a refining side configured to oppose the refining side on the other segment, and each of said refining sides includes a refining zone having bars and grooves between adjacent ones of the bars, wherein distance between the grooves in the first plate segment and the grooves in the second plate segment is substantially constant along an arc through the refining zone while the set is mounted to discs in a refiner.
    Type: Application
    Filed: May 7, 2013
    Publication date: December 5, 2013
    Applicant: ANDRITZ INC.
    Inventor: Luc GINGRAS
  • Patent number: 8474739
    Abstract: A refining surface (1, 2) of a refiner for defibrating lignocellulose-containing material has a first blade bar (14?) and a second blade bar (14?) with a blade groove (15) therebetween. A third blade bar has a rising guide surface (21) for guiding the lignocellulose-containing material to an upper surface (14c) of the third blade bar. The third bar guide surface is arranged, in the direction of travel of the first and the second blade bar (14?), at least partly between the first and the second blade bar, between the first blade bar and an imaginary extension of the second blade bar, between an imaginary extension of the first blade bar and the second blade bar, or between the imaginary extensions of both the first and the second blade bar.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: July 2, 2013
    Assignee: Metso Paper, Inc.
    Inventor: Ville Ruola
  • Patent number: 8398009
    Abstract: A refiner or disperser blade is made of a steel alloy by casting. The alloy comprises, in weight percent: 0.6 to 4 wt-% carbon (C), 0.5 to 1.5 wt-% silicon (Si), 0.4 to 1.5 wt-% manganese (Mn), 12 to 28 wt-% chromium (Cr), 4 to 12 wt-% niobium (Nb), as well as iron (Fe).
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: March 19, 2013
    Assignee: Metso Paper, Inc.
    Inventors: Karri Vihma, Johan Norberg
  • Patent number: 8342437
    Abstract: A deflaker plate for use in a deflaker for reducing fibrous flakes in a slurry of fibers. The deflaker plate may include at least one annular ring consisting of multiple teeth, in which at least one tooth has a leading face, a trailing face, and an impact-generating side-face. The impact-generating side-face may be adapted to generate an impact force during operation, such that the force corresponds to a first vector radially pushing the slurry towards a center of the deflaker and a second vector tangentially pushing the slurry towards the leading face.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: January 1, 2013
    Assignee: Andritz Inc.
    Inventor: Peter Antensteiner
  • Patent number: 8328124
    Abstract: A method of mechanically refining lignocellulosic material in a refiner having opposing refiner plates including: introducing the material to an inlet in one of the opposing refiner plates; rotating at least one of the plates with respect to the other plate, wherein the material moves radially outward through a gap between the plates due to centrifugal forces created by the rotation; as the material moves through the gap, passing the material over bars in a refiner zone of a first one the plates, each bar in the refiner zone having a leading face and an upper ridge, wherein the leading face includes a sidewall of the bar facing a direction of rotation of the opposing plate and the leading edge has an interior angle of between 150 degrees to 175 degrees, and discharging the material from the gap at a periphery of the refiner plates.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: December 11, 2012
    Assignee: Andritz Inc.
    Inventor: Luc Gingras
  • Patent number: 8272588
    Abstract: A rotary mandolin assembly for processing food comprises a container, a lid, and an operating handle. The container has a base and a sidewall that connects to and protrudes upwardly from the base. The sidewall terminates at a flange. The lid contacts the flange of the sidewall of the container. The lid has a cover, a retractable door, and a blade carrier. The cover has an opening formed therein. The retractable door is disposed above the opening of the cover. The retractable door is adapted to be positioned in one of a first position and a second position. The blade carrier has a plurality of blades attached thereto. The blade carrier is disposed beneath both the cover and the retractable door. The operating handle removably connects to the blade carrier.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: September 25, 2012
    Assignee: WKI Holding Company, Inc.
    Inventors: Julia Burke, Marianne Grisdale, Siarhei Murauyou
  • Patent number: 8226023
    Abstract: A refiner (1) comprising a stator (2) and a rotor (4). The stator (2) and the rotor (4) comprise a flat portion (7, 9) and a conical portion (8, 10). The conical portion has a first end (17) of smaller diameter (D1) and a second end (18) of greater diameter (D2) such that the first end is directed towards the flat portion and the second end is directed away from the flat portion. The refining surface (12) of the conical portion of the stator comprises at least an outer zone (23) arranged at the second end of the conical portion and an inner zone (22) arranged relative to the outer zone on the side of the first end of the conical portion. A portion of the length of the blade bars (20) in the outer zone are arranged relative to the rotation direction (RD) of the rotor such that they have a retentive effect on the material to be refined. Also a blade segment (19) for a conical portion of a stator of a refiner.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: July 24, 2012
    Assignee: Metso Paper, Inc.
    Inventors: Petteri Vuorio, Dahn Lundell, Eric Hensley, Jeff Bowie, Christer Hedlund, Peter Bergqvist
  • Publication number: 20120048979
    Abstract: A refiner plate carrier for use in refining lignocellulosic material including a mounting mechanism for mounting to a refiner plate segment and not a rotor or stator disk. The combined plate carrier and refiner plate segment may be then attached to a refiner disk. The refiner plate carrier need not provide structural support to the segment during lignocellulosic refining.
    Type: Application
    Filed: November 3, 2011
    Publication date: March 1, 2012
    Applicant: Andritz Inc.
    Inventors: Luc GINGRAS, George Reynolds
  • Patent number: 8113455
    Abstract: A device for grinding input material is provided with a supporting disk rotating around an axis of rotation within a housing. On the supporting disk, in its circumferential area, first grinding tools are arranged concentrically, axially opposite from which second grinding tools are arranged, forming a radial grinding gap. During operation of a device in accordance with the invention, the grinding tools execute a motion relative to one another. In accordance with an embodiment, the first grinding tools be fastened over an interchangeable ring to the supporting disk, wherein the interchangeable ring is fastened removably to the supporting disk concentric to the axis of rotation and on which the first grinding tools are arranged.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: February 14, 2012
    Assignee: Pallmann Maschinenfabrik GmbH & Co. KG
    Inventor: Hartmut Pallmann
  • Patent number: 8061643
    Abstract: A refiner plate carrier for use in refining lignocellulosic material including a mounting mechanism for mounting to a refiner plate segment and not a rotor or stator disk. The combined plate carrier and refiner plate segment may be then attached to a refiner disk. The refiner plate carrier need not provide structural support to the segment during lignocellulosic refining.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: November 22, 2011
    Assignee: Andritz Inc.
    Inventors: Luc Gingras, George Reynolds
  • Patent number: 8033308
    Abstract: A double-sided wear insert, for a knife assembly that includes a knife, a clamp, and a holder. In one embodiment, the wear insert can be turned end-for-end, and in another embodiment the wear insert can be flipped up-side down, to double the service life of the part.
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: October 11, 2011
    Assignee: Key Knife, Inc.
    Inventor: Bradley R. Stager
  • Patent number: 8028946
    Abstract: A refining surface (2) of a refiner stator (4) for a refiner for defibrating lignocellulose-containing material has a feed edge (17) oriented in the direction of the feed flow of the material to be refined, and a discharge edge (16) oriented in the direction of the discharge flow of the material refined. The surface (2) has blade bars (10) with grooves (11) therebetween, and at least one dam (12) in a groove (11). The dam has an upwardly rising guiding surface (13) from the blade groove bottom (15) for guiding the material to be refined and the material already refined out of the blade groove. The upward direction of the guiding surface (13) is from the direction of the discharge edge (16) of the refining surface (2) in the direction of the feed edge (17) of the refining surface (2).
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: October 4, 2011
    Assignee: Metso Paper, Inc.
    Inventor: Petteri Vuorio
  • Patent number: 8006924
    Abstract: A refiner plate assembly and method includes an annular arrangement of adapter subplates that mount to a refiner disk of a disk refiner using a conventional mounting technique, such as bolted in a standard pattern associated with the particular disk refiner. The adapter subplate arrangement remains mounted to the disk and provides a universal mounting surface for an annular arrangement of individual removable refiner segments. A steam and/or accept evacuation channel is provided in this assembly via filter passages at a radially intermediate location in one or more refiner segments which communicate with a recess or channel in one or more associated adapter subplates that direct the steam and/or accepts through outlet ports in the outer rim of the adapter subplate(s). Refining efficiency is provided in a universal refiner plate assembly by eliminating steam volume and already refined pulp from outer portions of the refining zone.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: August 30, 2011
    Assignee: J & L Fiber Services, Inc.
    Inventor: Ola M. Johansson
  • Patent number: 7984869
    Abstract: A face-mounted carrier for transporting a refiner plate segment for refining lignocellulosic material to a refiner disk. The refiner plate segment may contain threads that facilitate bolting to the face-mounted carrier and bolting to the refiner disk.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: July 26, 2011
    Assignee: Andritz Inc.
    Inventor: Ron Musselman
  • Patent number: 7913942
    Abstract: A refiner (1) comprising a stator (2) and a rotor (6) that comprise a planar portion and a conical portion after the planar portion, which in turn comprise refining surfaces (4, 8) provided with blade bars (15, 18, 24) and blade grooves (16, 19, 25) therebetween, and the planar portions (4?, 81) of the refining surfaces (4, 8) of the stator (2) and the rotor (6) comprising at least two refining zones (14, 17, 23) in the direction of the radius (R) of the planar portion.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: March 29, 2011
    Assignee: Metso Paper, Inc.
    Inventor: Petteri Vuorio
  • Patent number: 7900862
    Abstract: A refiner plate for a mechanical refiner of lignocellulosic material including: a refining surface on a substrate, wherein the refining surface is adapted to face a refining surface of an opposing refiner plate; wherein the refining surface includes bars and grooves between the bars and the bars have at least a radially outer section in which the bars include a leading sidewall having an irregular surface in the outer section.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: March 8, 2011
    Assignee: Andritz Inc.
    Inventor: Luc Gingras
  • Patent number: 7823822
    Abstract: A bushing to assist in positioning a bolt in the bolt apertures of refining plates and disk. The bushing is a cylindrical sleeve that slides over the bolt shaft, before the bolt is inserted into the aperture. The bushing may be short relative to the length of the bolt and the aperture. The bushing fits between the bolt and aperture in the refining plate and/or disk, as the bolt engages the threads of the plate and/or disk. The bolt is centered in the aperture and the centered bolt ensures that the plate segment is properly positioned on the disk as the bolt fastens the segment to the disk.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: November 2, 2010
    Assignee: Andritz Inc.
    Inventor: Yves Raymond
  • Patent number: 7798436
    Abstract: A portable chipper apparatus having a chipping disc with front and rear faces and a series of slots extending through the disc. A knife is arranged on the front face of the disc in proximate relation relative to each slot. At least two shredder/detanglers are secured to the rear face of the disc. Each shredder/detangler includes a base and at least three generally planar and substantially identical paddles arranged in spaced and generally parallel relation relative to each other. The paddles extend from the base at an angle and projects away from the rear face of the chipping disc. The paddles on each shredder/detangler have a continuous elongated linear cutting edge for impacting with and further reducing and cutting the size of the chipped material engaged by the paddles. Each shredder/detangler further includes an impeller at a distal end of the base.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: September 21, 2010
    Assignee: The Toro Company
    Inventor: James A. Cornelius
  • Publication number: 20100218850
    Abstract: A sharp edged knife stop can secure the position of knife blades in a cutting or chipping system and prevent the separation of knife blades. The sharp edged knife stops can also assist in the cutting or chipping and lower the amount of debris build up that would occur with the use of traditional knife stops. The sharp edged knife stop has the same inclination angle as the knife blades and the same difference in knife edge height as the knife blades above that of a retaining ring height.
    Type: Application
    Filed: October 22, 2008
    Publication date: September 2, 2010
    Applicant: IGGESUND TOOLS AB
    Inventors: Robert L. Uelmen, Aaron J. Adent
  • Patent number: 7779525
    Abstract: Replaceable refiner fillings used for refining of lignocellulosic and other natural and synthetic fibrous materials in the manufacture of paper, paperboard, and fiberboard products. The refiner fillings include a pattern of blades and spacers defined by a bar cluster, with the bar cluster being the basis of formation of the filling. A method of manufacture provides bar cluster patterns based on factors including pumping angle, plurality of segments in a refiner filling, and the number of clusters in a segment. A bar set cluster is established for uniform fabrication of bar clusters for the refiner fillings.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: August 24, 2010
    Assignee: Advanced Fiber Technologies (AFT) Trust
    Inventor: John B. Matthew
  • Patent number: 7758726
    Abstract: Plate elements, a plate configuration, and associated system for thermomechanical refining of wood chips wherein destructured and partially defibrated chips are fed to a rotating disc primary refiner, where opposed discs each have an inner band pattern of bars and grooves and outer band pattern of bars and grooves, such that substantially complete fiberization (defibration) of the chips is achieved in the inner band and the resulting fibers are fibrillated in the outer band. One embodiment is directed to a pair of opposed co-operating refining plate elements for a flat disc refiner wherein the bars and grooves on each of the inner bands form an inner feed region followed by an outer working region, the bars and groove on each of the outer bands form an inner feed region followed by an outer working region, and the gap and/or material flow area formed when the plates are placed in front of each other increases between the inner working region and the outer feed region.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: July 20, 2010
    Assignee: Andritz Inc.
    Inventors: Marc J. Sabourin, Luc Gingras
  • Patent number: 7712694
    Abstract: A special shape of bars on refining discs or plate segments of a rotating disc refiner is disclosed including a plurality of bars generally extending outwards towards the outer end of the disk across its surface, arranged in a single, two or more radial zones, the plurality of the bars within a zone being curved with the shape of a logarithmic spiral. Disc refiners including such refining discs are also disclosed.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: May 11, 2010
    Assignee: Durametal Corporation
    Inventor: Peter Antensteiner
  • Patent number: 7712691
    Abstract: A hogging, sometimes known as reducing, apparatus for reducing wood waste into hog fuel, though some embodiments may also be used for reducing other materials including demolition timber, demolition masonry, mild steel scrap (thin sections), soft metal scrap, recycled cans, recycled glass, recycled plastic, soft rocks, occasionally hard rocks, recycled roading and asphalt, old tyres, and certain green garden waste. The apparatus includes a drum (40) inclined to the horizontal and into which raw material can be fed at its upper end. Rotation of the drum (40) assists driving raw material towards reducing elements (45) positioned at an angle near its (40) lower end. Screening apertures (41) allow sufficiently comminuted material to pass therethrough for removal. Optional features include internal agitators (60) for improving processing and screening, assisted drying of raw material by motor exhaust (71), and initial pre-screening of foreign material.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: May 11, 2010
    Inventor: Rodney Warwick Sharp
  • Patent number: 7669621
    Abstract: A disc cutting apparatus for chipping wood chips from a log includes a chipper frame, a rotary cutting disc having a plurality of substantially radially disposed knife assemblies in relation to a proximal facing side of the disc and a feed spout into which a log is fed into the chipper apparatus. The apparatus further includes a bedknife, the bedknife having a first surface and an opposing second surface that is nonparallel to the first surface such that a wedge is produced between the first surface and the second surface for fitting within a corresponding nonparallel gap in the chipper frame. The bedknife further includes at least one secondary trimming edge for more complete reduction of wood chipped and for reducing the size of slivers formed.
    Type: Grant
    Filed: August 14, 2006
    Date of Patent: March 2, 2010
    Assignee: CEM Machine, Inc.
    Inventors: Timothy Paul Nettles, John P. Storms
  • Publication number: 20090302140
    Abstract: A refiner plate assembly and method includes an annular arrangement of adapter subplates that mount to a refiner disk of a disk refiner using a conventional mounting technique, such as bolted in a standard pattern associated with the particular disk refiner. The adapter subplate arrangement remains mounted to the disk and provides a universal mounting surface for an annular arrangement of individual removable refiner segments. A steam and/or accept evacuation channel is provided in this assembly via filter passages at a radially intermediate location in one or more refiner segments which communicate with a recess or channel in one or more associated adapter subplates that direct the steam and/or accepts through outlet ports in the outer rim of the adapter subplate(s). Refining efficiency is provided in a universal refiner plate assembly by eliminating steam volume and already refined pulp from outer portions of the refining zone.
    Type: Application
    Filed: June 19, 2009
    Publication date: December 10, 2009
    Inventor: Ola M. Johansson
  • Publication number: 20090242679
    Abstract: A wear plate assembly includes a body portion and an abutment flange extending from a radially outer circumferential edge of the body portion and substantially normal thereto. The abutment flange is cooperatively configured with respect to another abutment flange of a respective adjacent wear plate that interengages with the wear plate such that a convoluted edge of the another abutment flange of the respective adjacent wear plate intermeshes with a respective convoluted edge of the abutment flange of the wear plate. At least one polygonal recess and a corresponding abutment ramp are substantially aligned therewith at a same latitude on the body portion, the recess further includes a through hole extending through the wear plate. A first clip configured is partially received in the polygonal recess, the clip having a plurality of exposed impact surface faces.
    Type: Application
    Filed: March 28, 2008
    Publication date: October 1, 2009
    Applicant: ALSTOM TECHNOLOGY LTD.
    Inventors: Oliver G. Briggs, JR., Chistopher D. Curl, Thomas B. Preston, Paul C. Thulen
  • Publication number: 20090230226
    Abstract: A face-mounted carrier for transporting a refiner plate segment for refining lignocellulosic material to a refiner disk. The refiner plate segment may contain threads that facilitate bolting to the face-mounted carrier and bolting to the refiner disk.
    Type: Application
    Filed: February 6, 2009
    Publication date: September 17, 2009
    Applicant: ANDRITZ INC.
    Inventor: Ron Musselman
  • Publication number: 20090173813
    Abstract: Replaceable refiner fillings used for refining of lignocellulosic and other natural and synthetic fibrous materials in the manufacture of paper, paperboard, and fiberboard products. The refiner fillings include a pattern of blades and spacers defined by a bar cluster, with the bar cluster being the basis of formation of the filling. A method of manufacture provides bar cluster patterns based on factors including pumping angle, plurality of segments in a refiner filling, and the number of clusters in a segment. A bar set cluster is established for uniform fabrication of bar clusters for the refiner fillings.
    Type: Application
    Filed: March 12, 2009
    Publication date: July 9, 2009
    Inventor: John B. Matthew
  • Publication number: 20090134258
    Abstract: A process for making spare parts for refiners used for producing paper, in particular for making refiners for preparing paper pulps, where the pulp enters at one end and exits on the other side, passing through a rotary body or rotor or male component equipped with bars (or grooves) and a casing or stator or female component bearing fixed counter-bars. This process includes mechanical machining of unmachined sectors; routing or mechanical machining of the machined sectors to obtain a set of bars or grooves or holes; putting together the cone (rotor or stator by joining all of the sectors to the supporting flanges; mechanical machining (turning and grinding) to finish the cone; and balancing of the rotor or stator.
    Type: Application
    Filed: November 21, 2008
    Publication date: May 28, 2009
    Applicant: OFFICINE AIRAGHI S.R.L.
    Inventor: Luca Ghibellini
  • Patent number: 7520460
    Abstract: A sensor, sensor disk, sensor measurement correction system, and method used in measuring a parameter in the refining zone. The sensor includes a spacer that spaces its sensing element from the disk. In one preferred embodiment, the spacer is made of an insulating material that insulates the sensing element from the thermal mass of the disk to prevent the thermal mass from affecting sensor measurement. The sensor includes a housing carried by the spacer that, in turn, carries the sensing element. Where the sensing element is a temperature sensing element, the housing is thermally conductive and the housing and spacer enclose the sensing element. Each sensor is disposed in the refining surface, preferably in its own separate bore in the disk and flush with or below axial refiner bar height. Signals from one or more sensors are processed by a processing device linked to a module containing calibration data that is applied to make sensor measurements more accurate.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: April 21, 2009
    Assignee: J & L Fiber Services, Inc.
    Inventors: Ola M. Johansson, Timothy L. Wulf
  • Patent number: 7513451
    Abstract: A refining element for use in the refining of fibrous materials is disclosed in which the refining surface includes an inner portion and an outer portion defining a transition region between these two portions, a plurality of bars and grooves in the inner portion of the refining surface, and a plurality of bars and intermediate grooves in the outer portion of the refining surface, the bars in the inner surface having a greater width than those in the outer surface, and the transition region having a varying distance from the inner edge of the refining element across the refining surface.
    Type: Grant
    Filed: January 17, 2005
    Date of Patent: April 7, 2009
    Assignee: Metso Paper, Inc.
    Inventors: Nils Virving, Pertti Purolainen, Lars Holmsten
  • Patent number: 7478773
    Abstract: A refiner plate including a generally planar surface having annular rows of teeth arranged concentrically on the plate, and at least one of said rows includes teeth including a leading edge corner angle of less than 90 degrees. These teeth may include a leading sidewall having a radially outward portion slanted in a direction opposing the rotation of the plate.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: January 20, 2009
    Assignee: Andritz Inc.
    Inventors: Luc Gingras, Mike Bacich
  • Patent number: 7472855
    Abstract: A refiner stator plate having concentric rows of teeth wherein an outer row is at or near an outer periphery of the plate, and the outer row teeth include leading sidewalls slanted to deflect high-velocity refining particles moving along a radial line between the plates.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: January 6, 2009
    Assignee: Andritz Inc.
    Inventor: Luc Gingras
  • Publication number: 20080302897
    Abstract: A refiner blade comprising a blade surface for defibrating a lignocellulose-containing material, the blade surface comprising blade bars and blade grooves provided therebetween. At least one blade groove provided in the blade surface is formed by removing material from the blade surface by water cutting.
    Type: Application
    Filed: December 4, 2006
    Publication date: December 11, 2008
    Inventors: Hakan Sjostrom, Timo Kononen