Endless Band Or Belt Type Patents (Class 83/661)
  • Patent number: 9687923
    Abstract: A cutting-angle adjustable bandsaw is provided with a base, a first mounting seat, a second mounting seat, a first saw table, a second saw table, a first drive unit, a second drive unit, a bandsaw unit and an adjustment unit. The first and second drive units can make the first and second saw tables move to different horizontal planes, so as to adjust the band blade riding between the drive wheel and the assistant wheel to an inclined position, so that the cutting angle of the band blade is changed to reduce the contact area between the band blade and the object to be cut.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: June 27, 2017
    Assignee: EVERISING MACHINE CO.
    Inventor: Shu-Chia Chiao
  • Patent number: 9643267
    Abstract: A blade for use with a reciprocating saw includes an attachment portion configured to couple to the reciprocating saw and a body extending from the attachment portion. The body includes a first portion, a tip portion, a second portion extending from the first portion to the tip portion, and a cutting edge. The second portion has a height less than a height of the first portion. The blade also includes a blunt tip formed at a distal end of the tip portion and a plurality of gullets formed in the second portion. At least one of the gullets has a generally trapezoidal shape.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: May 9, 2017
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: Austin J. Kazda, Ryan J. Malloy, Robert W. Butzen, Andrew J. Schulz, Roger D. Neitzell, Courtney D. McCool
  • Patent number: 9527146
    Abstract: A saw blade for an oscillating saw can include a plate having cutting teeth arranged in an arcuate tooth pattern at a cutting path. Cutting teeth on opposite sides of the centerline of the plate may be arranged to face oppositely. Each cutting tooth can have primary and secondary relief surfaces at different angles to the cutting path. Cutting teeth may be offset outwardly from the plate, with tips of some of the cutting teeth having outward-facing kerf surfaces parallel to the plate. The plate may be of bimetal construction, so that the cutting teeth and bulk of the plate are made of different materials. The cutting teeth may be formed by a coining process.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: December 27, 2016
    Assignee: TORONTO SAW WORKS INC.
    Inventors: Robin Stoddart, Carlton Chong
  • Patent number: 9225299
    Abstract: A method and generator for modifying interactions between a load and the generator are described. The method includes applying output power to the load using a power amplifier, controlling a level of the output power responsive to a power control setting, and adjusting a conduction angle of the power amplifier to reduce a level of sensitivity of the power amplifier to variations of an impedance of the load. The generator includes a compensation subsystem coupled to the power amplifier that controls a conduction angle of the power amplifier to enable a sensitivity of the power amplifier to be adjusted.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: December 29, 2015
    Assignee: Advanced Energy Industries, Inc.
    Inventors: Michael Mueller, Michael Lynn Westra, Jeremy Richardson, Gideon Van Zyl
  • Patent number: 9038512
    Abstract: A method for manufacturing a bandsaw blade provided at the top of the teeth with cutting tips made of a hard material, includes the steps of: offsetting to the left and right saw teeth constituting left and right offset teeth; forming the saw teeth constituting the left and right offset teeth to a smaller tooth height than that of the saw teeth constituting straight teeth; and grinding cutting tips provided to the top of the left and right offset teeth subsequent to the offsetting step, and machining the edge lines at the top of the left and right offset teeth so that the lines are orthogonal to the travel direction of a bandsaw blade and the cutting direction of the bandsaw blade.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: May 26, 2015
    Assignees: AMANDA COMPANY, LIMITED, AMANDA MACHINE TOOLS CO., LTD
    Inventors: Katsuhiro Horiguchi, Susumu Tsujimoto
  • Publication number: 20150075346
    Abstract: A saw band (1) includes a tooth supporting body (2), a plurality of teeth (3) being located at the tooth supporting body (2) and a back (4) being located opposite to the teeth (3). The back (4) includes a profiled back portion (5). The profiled back portion (5) includes an inclination portion (6), a declination portion (7) and a compensation portion (8). The declination portion (7) is located next to the end of the inclination portion (6) and the compensation portion (8) is located next to the end of the declination portion (7). Alternatively, the inclination portion (6) is located next to the end of the declination portion (7) and the compensation portion (8) is located next to the end of the inclination portion (6), the length of the compensation portion (8) being shorter than length of the inclination portion (6) and the length of the declination portion (7).
    Type: Application
    Filed: September 15, 2014
    Publication date: March 19, 2015
    Inventors: Joerg H. Kullmann, Patrick Gleim, Christoph Siel
  • Publication number: 20140377021
    Abstract: A saw tooth for a saw blade that is attached in a longitudinal direction thereof on the saw blade body to extend away, at least in part, from the saw blade body. The saw tooth is formed with a cutting-face part having a cutting face, a height of which extends in the longitudinal direction and a width of which extends perpendicularly to the longitudinal direction. The width of the cutting face is greater than a height of the cutting face.
    Type: Application
    Filed: May 27, 2014
    Publication date: December 25, 2014
    Applicant: ALBERT KNEBEL GMBH & CO. KG HOLDING
    Inventor: Alexander Knebel
  • Publication number: 20140150620
    Abstract: A saw blade having a blade body, a plurality of cutting teeth defining a cutting edge along an edge of the blade body, each tooth along the cutting edge defining a cutting tip. At least one tooth tip along the cutting edge includes a different material, such as, for example, high speed steel, carbide, diamond, and/or a tip coating, than at least one other tooth tip along the cutting edge. The plurality of teeth may be arranged in a repeating pattern or in no pattern along the cutting edge. A method of manufacturing the saw blade includes forming a cutting edge along an axial edge of a blade body, defined by a plurality of cutting teeth having respective tooth cutting tips, wherein at least one tooth tip along the cutting edge includes a different material than at least one other tooth tip along the cutting edge.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Applicant: IRWIN INDUSTRIAL TOOL COMPANY
    Inventors: Asif Elliston, Stephen A. Hampton, Mark T. Cranna, Kenneth Hall
  • Patent number: 8714059
    Abstract: A band saw blade has a plurality of teeth defining a pitch pattern and first and second set patterns within each pitch pattern. The first set pattern includes a plurality of offset teeth that are each offset at approximately the same set magnitude as every other set tooth within the first set pattern. The second set pattern includes a plurality of first offset teeth that are each offset at approximately a first set magnitude, and a plurality of second set teeth that are each offset at approximately a second set magnitude that is greater than the first set magnitude.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: May 6, 2014
    Assignee: Irwin Industrial Tool Company
    Inventor: Mark T. Cranna
  • Publication number: 20140102276
    Abstract: Saw blades, including band saw blades, reciprocating saw blades, hole saw blades and hand hack saw blades, are made from a bi-metal strip. The bi-metal strip includes a cutting edge defined by a plurality of cutting teeth that is welded to an axially-elongated carbon or spring steel backing. The cutting edge is formed of a high speed steel alloy consisting essentially of: about 8/10% to about 1% carbon, up to about 45/100% silicon, up to about 4/10% manganese, up to about 3/100% phosphorous, up to about 3/100% sulfur, about 4% to about 6% cobalt, about 3% to about 5% chromium, about 4-1/2% to about 5-1/2% molybdenum, about 1% to about 2-1/2% vanadium, about 5-1/2% to about 7% tungsten, and about 74% to about 78-1/2% iron.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 17, 2014
    Applicant: Irwin Industrial Tool company
    Inventors: Mark J. Wysk, Arthur C. Reardon
  • Patent number: 8695470
    Abstract: A saw blade (1) includes a base body (2) and a plurality of teeth (10) being connected to the base body (2), the teeth (10) including a cutting portion (6) and a chip producing surface (7). At least a part of the teeth (10) are arranged in a group of teeth being repeatedly arranged along the base body (2). The group of teeth (10) includes at least three unset teeth (10) having different widths. The broadest tooth (10) in the group of teeth (10) does not include a chip deforming element being located next to the chip forming surface (7) in a direction facing away from the cutting portion (6). At least one other tooth (10) in the group of teeth (10) includes a chip deforming element (8) being located next to the chip forming surface (7) in a direction facing away from the cutting portion (6).
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: April 15, 2014
    Assignee: Wikus-Saegenfabrik Wilhelm H. Kullmann GmbH & Co. KG
    Inventors: Joerg H Kullmann, Frank Carrier
  • Patent number: 8677873
    Abstract: A planar band saw blade having an outer cutting edge with a plurality of saw teeth also includes sets of secondary teeth placed in cutout portions along a centerline of the band saw blade. The secondary tooth sets provide portions within the body of the saw blade that provide additional cutting action that reinforces the primary outer cutting edge of the blade. The band saw blade may include teeth on each parallel edge and the interior tooth sets in each cutout portion alternatively point toward opposite edges.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: March 25, 2014
    Assignee: Eugene Carbide Saw Service, Inc.
    Inventors: John Souza, Ross Souza, Rod Souza
  • Publication number: 20140069246
    Abstract: According to prior art, especially wood workpieces are cut by means of band saws or gate saws, a chipping-type separation of the workpiece (5) being achieved by means of the toothing of the saw blades (2). Proceeding from the prior art, the invention relates to a novel device for separating materials (1) wherein an abrasive saw blade (2) of little blade thickness and having a close-toothed microtoothing (3) is used so that a grinding-type separation of materials is achieved. The resulting kerfs are considerably thinner and the cut edges are treated more gently than known from the prior art. The novel abrasive saw blade (2), however, requires more time-consuming blade guidance and blade cleaning and a different blade production. Treatment of wood and veneers.
    Type: Application
    Filed: April 20, 2012
    Publication date: March 13, 2014
    Applicant: Simon Moehringer Anlagenbau GmbH
    Inventor: Stefan Moehringer
  • Publication number: 20130298743
    Abstract: A saw blade (1) includes a tooth supporting body (2) and a plurality of teeth (3) being arranged at the tooth supporting body (2). Each of the plurality of teeth (3) includes a tooth tip (8) including a cutting portion (9). The cutting portion (9) and at least another part of the tooth tip (8) of the teeth (3) are made of a steel alloy that has been produced by powder metallurgy and full annealing.
    Type: Application
    Filed: May 7, 2013
    Publication date: November 14, 2013
    Inventors: Joerg H. Kullmann, Gert Kellezi, Devrim Caliskanoglu
  • Publication number: 20130149059
    Abstract: A saw blade has a cutting edge including a plurality of teeth with a tip, a clearance surface on one side of the tip, a rake face on an opposite side of the tip relative to the clearance surface, a gullet, and a substantially flat or non-curvilinear projection between the rake face and the gullet projecting outwardly relative to the rake face. The projection is inclined at an acute angle relative to a plane extending between the tips of consecutive unset teeth, with an inner end adjacent to the rake face at least about 25/1000 inch below the tip and an outer end adjacent to the gullet. The distance between the inner and the outer ends in a direction substantially parallel to the plane extending between the tips of at least two teeth is less than about 65/1000 inch.
    Type: Application
    Filed: December 7, 2011
    Publication date: June 13, 2013
    Inventor: Mark T. Cranna
  • Publication number: 20130133500
    Abstract: A method for manufacturing a bandsaw blade provided at the top of the teeth with cutting tips made of a hard material, includes the steps of: offsetting to the left and right saw teeth constituting left and right offset teeth; forming the saw teeth constituting the left and right offset teeth to a smaller tooth height than that of the saw teeth constituting straight teeth; and grinding cutting tips provided to the top of the left and right offset teeth subsequent to the offsetting step, and machining the edge lines at the top of the left and right offset teeth so that the lines are orthogonal to the travel direction of a bandsaw blade and the cutting direction of the bandsaw blade.
    Type: Application
    Filed: August 5, 2011
    Publication date: May 30, 2013
    Applicants: AMADA MACHINE TOOLS COMPANY, LIMITED, AMADA COMPANY, LIMITED
    Inventors: Katsuhiro Horiguchi, Susumu Tsujimoto
  • Patent number: 8337189
    Abstract: The invention relates to a device for producing pellets from plastic material or from material to be pelletized. Said device comprises a continuous casting device (1) from which at least one strand (2) of the material to be pelletized is issued, and a belt conveyor (3) comprising at least one conveying belt (4) on which the strand (2) can be fed to a pelletizer (5), said pelletizer breaking the strand up into pellets (6). The invention is characterized in that the belt conveyor (3) has a switchable direction of conveyance of the conveying belt (4), a direction of feed conveyance towards the pelletizer (5) and a direction of discharge conveyance away from the pelletizer (5). The invention also relates to a method for operating said device.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: December 25, 2012
    Assignee: Automatik Plastics Machinery GmbH
    Inventors: Sven Fenchel, Jochen Scheurich
  • Patent number: 8234961
    Abstract: A saw band of steel for a band saw machine with a band back (Br) and with a tooth row arranged thereon having several teeth (20), wherein the initial tooth form (10) is triangular with a tooth base with tooth width (b) and with the tooth tip (1) with a first tooth height (h1), such that the tooth tip (1) does not project beyond tooth width (b) in the band running direction (L), wherein the lateral side of the triangle located in front in the running direction (L) forms the rake face (2) and the rear lateral side forms the clearance face (3) of the tooth (10, 20). The tooth tip (1) of the triangle is specifically removed for the development of a rounded-off tooth crest (4) with a reduced second tooth height (h2), wherein at least in the proximity of the tooth crest (4) a hard material coating covers at least partially the cutting face formed of the tooth crest (4), the rake face (2) and the clearance face (3).
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: August 7, 2012
    Assignee: Oerlikon Trading AG, Truebbach
    Inventors: Josef Vogel, Michael Balint, Gerhard Peyerl
  • Patent number: 8210080
    Abstract: A workpiece cutting method utilizing a band-saw machine, includes the following steps of: guiding tooth tips of an endless band-saw blade provided on the band-saw machine in a direction of a workpiece by a band-saw blade guiding apparatus; and applying vibrations to the band-saw blade in a cutting direction to the workpiece so as to perform cutting of the workpiece by a vibration applying unit provided on the band-saw blade guiding apparatus.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: July 3, 2012
    Assignees: Amada Company, Limited, Amada Cutting Co., Ltd.
    Inventors: Toru Tokiwa, Isomi Washio, Shoji Aihara, Minoru Gotoh
  • Patent number: 8113100
    Abstract: A wood cutting band saw blade includes a cutting edge and a back edge, wherein the cutting edge is defined by a plurality of teeth spaced relative to each other. The plurality of teeth include a plurality of set teeth each having a tip, each defining a bend plane, and each including a shelf located at least partially between the tip and the bend plane for reducing saw dust passing to the kerf and accumulating on the band saw blade. Each of the set teeth may define a relief surface and a cutting surface where the relief surface extends from one side of the tip in a direction opposite that of the movement of the band saw blade and the cutting surface extends from another side of the tip. The shelf includes a shelf surface extending from the cutting surface and may terminate in a shelf tip.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: February 14, 2012
    Assignee: Irwin Industrial Tool Company
    Inventors: Mark T. Cranna, Darriel Miller
  • Publication number: 20120017742
    Abstract: A saw band of steel for a band-sawing machine has a band back and a row of teeth having a number of teeth, at least the row of teeth being provided with a hard material coating. According to the invention, this coating comprises one or more metals of subgroups IV, V or VI of the periodic system or aluminum or silicon and/or their nitrites, oxides, carbides, carbonitrides or borides of the aforementioned metals or mixtures thereof. A method according to the invention is a vacuum coating method, for example as PVD or paCVD.
    Type: Application
    Filed: August 3, 2011
    Publication date: January 26, 2012
    Applicant: Oerlikon Trading AG, Trubbach
    Inventor: Michael BALINT
  • Publication number: 20110265627
    Abstract: The saw blade according to the invention comprises a plurality of teeth spaced apart from each other by chip spaces, wherein at least some chip spaces have pimple-shaped bulges.
    Type: Application
    Filed: August 26, 2009
    Publication date: November 3, 2011
    Inventor: Werner Kwanka
  • Patent number: 7966918
    Abstract: A workpiece cutting method utilizing a band-saw machine, includes the following steps of: guiding tooth tips of an endless band-saw blade provided on the band-saw machine in a direction of a workpiece by a band-saw blade guiding apparatus; and applying vibrations to the band-saw blade in a cutting direction to the workpiece so as to perform cutting of the workpiece by a vibration applying unit provided on the band-saw blade guiding apparatus.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: June 28, 2011
    Assignees: Amada Company, Limited, Amada Cutting Co., Ltd.
    Inventors: Toru Tokiwa, Isomi Washio, Shoji Aihara, Minoru Gotoh
  • Publication number: 20110132168
    Abstract: A band saw blade includes multiple saw teeth having a straight tooth and right and left set teeth, and also includes a gullet portion provided between the saw teeth. A rake surface of each of the saw teeth is provided with a chip curler portion formed into an arc shape at an entire range of approximately 90° to form a chip generated at the time of cutting a work into a small rolled shape before the chip comes into contact with a bottom portion of the gullet portion. A chip non-contact surface to be kept out of contact with the chip is formed to have either a flat surface or a convex surface between the chip curler portion and the bottom portion of the gullet portion, and a dent portion is formed between the chip non-contact surface and the gullet bottom portion, the dent portion recessed from the chip non-contact surface in an opposite direction to a moving direction of the band saw blade in order to increase a radius of a concave curved surface constituting a back side of the gullet bottom portion.
    Type: Application
    Filed: August 7, 2009
    Publication date: June 9, 2011
    Applicants: AMADA COMPANY, LIMITED, AMADA MACHINE TOOLS COMPANY, LIMITED
    Inventor: Yuji Nagano
  • Patent number: 7930963
    Abstract: A workpiece cutting method utilizing a band-saw machine, includes the following steps of: guiding tooth tips of an endless band-saw blade provided on the band-saw machine in a direction of a workpiece by a band-saw blade guiding apparatus; and applying vibrations to the band-saw blade in a cutting direction to the workpiece so as to perform cutting of the workpiece by a vibration applying unit provided on the band-saw blade guiding apparatus.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: April 26, 2011
    Assignees: Amada Company, Limited, Amada Cutting Co., Ltd.
    Inventors: Toru Tokiwa, Isomi Washio, Shoji Aihara, Minoru Gotoh
  • Patent number: 7913601
    Abstract: A saw blade, such as a bandsaw blade, has a toothform pattern that includes a raker tooth and set teeth. The bandsaw blade teeth are configured such that a distance from a tooth point of the raker tooth to a tooth point of an immediately preceding set tooth is the smallest tooth spacing in the saw blade toothform pattern. With the use of a smaller spacing, the raker tooth removes the smallest chip thickness from a work piece relative to the chip thicknesses removed by the set teeth. This reduces the amount of load imposed on the raker tooth point. In one arrangement, in order to balance the forces on either side of the blade during operation, the saw blade is configured such that an accumulated pitch of the tooth points set to a first side of the blade are substantially equal to the accumulated pitch of the tooth points set to a second opposing side of the blade.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: March 29, 2011
    Assignee: Simonds International Corporation
    Inventors: Dale G. Petts, Peter B. Hopper
  • Patent number: 7908954
    Abstract: During the manufacture of a bandsaw blade, a rotary hone forms, in a clearance side of each tooth, a narrow flat land. A leading edge of the land defines a sharp cutting edge. The land has a width no longer than ten percent of the pitch distance of the teeth.
    Type: Grant
    Filed: November 22, 2001
    Date of Patent: March 22, 2011
    Assignee: Kapman AB
    Inventors: Per Forsberg, Håkan Hellbergh, Robert C. Hayden, Sr.
  • Publication number: 20110017042
    Abstract: A saw blade (1) includes a base body (2) and a plurality of teeth (10) being connected to the base body (2), the teeth (10) including a cutting portion (6) and a chip producing surface (7). At least a part of the teeth (10) are arranged in a group of teeth being repeatedly arranged along the base body (2). The group of teeth (10) includes at least three unset teeth (10) having different widths. The broadest tooth (10) in the group of teeth (10) does not include a chip deforming element being located next to the chip forming surface (7) in a direction facing away from the cutting portion (6). At least one other tooth (10) in the group of teeth (10) includes a chip deforming element (8) being located next to the chip forming surface (7) in a direction facing away from the cutting portion (6).
    Type: Application
    Filed: July 21, 2010
    Publication date: January 27, 2011
    Applicant: WIKUS-Saegenfabrik Wilhelm H. Kullmann GmbH & Co. KG
    Inventors: Jörg H. Kullmann, Frank Carrier
  • Publication number: 20100024225
    Abstract: A band saw including a housing, a motor supported by the housing, a first wheel supported by the housing for rotation about a first wheel axis, the first wheel being drivingly coupled to the motor and driveable by the motor, and a second wheel supported by the housing for rotation about a second wheel axis. A band saw blade extends around the first wheel and the second wheel for traveling in a continuous loop around the first wheel and the second wheel to cut a work piece. The band saw blade includes a first surface for engaging the first wheel and the second wheel, and a second surface opposite the first surface. The first surface includes a knurled surface for gripping the first wheel and the second wheel.
    Type: Application
    Filed: July 29, 2009
    Publication date: February 4, 2010
    Inventor: Jeffrey M. Wackwitz
  • Publication number: 20090044679
    Abstract: A planar band saw blade having an outer cutting edge with a plurality of saw teeth also includes sets of secondary teeth placed in cutout portions along a centerline of the band saw blade. The secondary tooth sets provide portions within the body of the saw blade that provide additional cutting action that reinforces the primary outer cutting edge of the blade. The band saw blade may include teeth on each parallel edge and the interior tooth sets in each cutout portion alternatively point toward opposite edges.
    Type: Application
    Filed: October 22, 2008
    Publication date: February 19, 2009
    Inventors: John Souza, Ross Souza, Rod Souza
  • Publication number: 20080276781
    Abstract: Cutting tool having a support and a multiplicity of saw teeth which have a tip region and a root region, wherein the saw teeth are welded directly or indirectly to the support at the root region, and wherein the tip region is narrower than the root region in side view.
    Type: Application
    Filed: July 8, 2008
    Publication date: November 13, 2008
    Inventors: Franz Egger, Karl Zepic
  • Publication number: 20080202306
    Abstract: A workpiece cutting method utilizing a band-saw machine, includes the following steps of: guiding tooth tips of an endless band-saw blade (7) provided on the band-saw machine (1) in a direction of a workpiece by a band-saw blade guiding apparatus (13,15); and applying vibrations to the band-saw blade in a cutting direction to the workpiece so as to perform cutting of the workpiece by a vibration applying unit (19A,19B) provided on the band-saw blade guiding apparatus (13,15).
    Type: Application
    Filed: July 25, 2005
    Publication date: August 28, 2008
    Applicants: AMADA COMPANY, LIMITED, AMADA CUTTING CO., LTD.
    Inventors: Toru Tokiwa, Isomi Washio, Shoji Aihara, Minoru Gotoh
  • Patent number: 7210388
    Abstract: A bimetal saw band which is suitable for cutting materials of high hardness and wear resistance at high cutting speeds and with a reduced consumption of coolant is disclosed. The saw band includes a support band with from 0.20 to 0.45% of carbon, from 0.2 to 0.6% of silicon, from 0.5 to 1.8% of manganese, from 0.1 to 3.5% of molybdenum, from 1.0 to 5.0% of chromium, from 0.5 to 1.5% of nickel, from 0.1 to 1.0% of copper, from 0.1 to 2.0% of tungsten, from 0.1 to 0.5% of vanadium, from 0.01 to 0.30% of niobium and/or tantalum and less than 0.2% of cobalt, and the remainder iron including melting-related impurities, with the tungsten, vanadium and niobium/tantalum contents matched to one another. The saw includes hardmetal tips including at least 75% of tungsten carbide and 5 to 15% of cobalt, as well as grain stabilizers with a grain size of less than 5 ?m.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: May 1, 2007
    Assignee: Stahlwerk Ergste Westig GmbH
    Inventors: Oskar Pacher, Werner Lenoir
  • Patent number: 7121180
    Abstract: A band saw includes a continuous saw body and multiple saw teeth provided on an edge portion of said saw body entirely. The edge portion of the saw body and the saw teeth are angled toward an inner side of the saw body by creating a bend near a tooth base line of the saw body. A band saw processing method and a method of manufacturing the band saw are also disclosed.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: October 17, 2006
    Assignee: Yugen Kaisha Marushimo Machine Saw
    Inventor: Tatsuo Shimofurutani
  • Patent number: 7036415
    Abstract: A band saw blade includes a plurality of set teeth which are formed in a variable pitch. In that construction, a bending lengths of each of the set teeth at a setting and bending position or at a bendingly setting position are substantially equal to each other.
    Type: Grant
    Filed: May 7, 1998
    Date of Patent: May 2, 2006
    Assignee: Amada Company, Limited
    Inventor: Susumu Tsujimoto
  • Patent number: 6938339
    Abstract: An apparatus for forming shaped surfaces of an elongate substrate is disclosed. The apparatus includes a first and second collar spaced along the substrate, wherein a cutting filament extends between the collars. The collars are selectively rotated to pass the cutting filament through the substrate and form a shaped surface. The shaped surface can include conical or frustoconical shapes.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: September 6, 2005
    Assignee: Corning Incorporated
    Inventor: Katherine W. Hughes
  • Publication number: 20040182216
    Abstract: An extended-wear chain for a chainsaw, for example, with the chain having a coating that improves one or more wear characteristics of the chain. The coating preferrably includes one or more of titanium, zirconium, a titanium compound, or a zirconium compound. The coating can be deposited by using a physical vapor deposition process, for example.
    Type: Application
    Filed: July 31, 2003
    Publication date: September 23, 2004
    Applicant: Electrolux Professional Outdoor Products, Inc.
    Inventor: Robert L. Morrison
  • Patent number: 6681674
    Abstract: A saw blade with teeth has a tooth point with a tooth edge (E1, E2). A tooth face is on the front side of the tooth and a tooth back is behind the tooth edge. A tooth gullet (G1, G2) is defined as the space between the tooth edges of two adjacent teeth. The tooth edge (E1, E2) extends between a right hand tooth corner (A1, A2) and a left-hand tooth corner (B1, B2). A first tooth gullet, disposed between the tooth edge (E1) of a first tooth (T1) and the tooth edge (E2) of the next tooth (T2) is beveled. A sloping surface (S1) extends from the first tooth edge (E1) in the rear end of the first tooth gullet downwardly along the tooth face and to at least the tooth bottom.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: January 27, 2004
    Inventors: William Hakansson, Bengt Emanuel Hakansson
  • Patent number: 6601495
    Abstract: A structural band saw blade is provided having a cutting edge defined by a plurality of teeth spaced relative to each other, and a back edge located on an opposite side of the blade relative to the cutting edge. Each tooth of the band saw blade defines a tip, a rake face formed on one side of the tip, a primary clearance surface formed on the opposite side of the tip relative to the rake face, a secondary clearance surface formed on the opposite side of the primary clearance surface relative to the tip, and a tertiary clearance surface formed on the opposite side of the secondary clearance surface relative to the first clearance surface. The primary clearance surface defines a first acute relief angle, the secondary clearance surface defines a second acute relief angle less than the first acute relief angle, and the tertiary clearance surface defines a tertiary acute relief angle greater than the first and second relief angles.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: August 5, 2003
    Assignee: American Saw & Mfg. Co., Inc.
    Inventor: Mark T. Cranna
  • Patent number: 6532852
    Abstract: The present invention provides a band saw blade 1 which has less difference in cut areas of workpieces with small diameters and cut areas of workpieces with large diameters, and is capable of weakening the cutting resistance and preventing unintentional bending of a cutting line and noise generation when a workpiece, which cannot easily be cut, is cut. The band saw blade 1 has, on the back surface 5 of a body 3 thereof, a wavy back surface 5 which is changed periodically or irregularly. A plurality of imaginary curves L1,L2 running parallel to the wavy undulation provided for the back surface 5 are formed opposite to the back surface. Moreover, a plurality of saw teeth 2,4,6,8,10 having tooth tips which substantially describe the imaginary curves L1,L2 are formed. Thus, constant areas can be cut by the band saw blade 1 regardless of the diameter of the workpieces required to be cut. Moreover, the cutting resistance can be weakened, and unintentional bending and noise can be prevented.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: March 18, 2003
    Assignee: Amada Company, Limited
    Inventors: Susumu Tsujimoto, Iwao Kamiyama
  • Publication number: 20020148340
    Abstract: A band saw blade includes a plurality of set teeth which are formed in a variable pitch. In that construction, a bending lengths of each of the set teeth at a setting and bending position or at a bendingly setting position are substantially equal to each other.
    Type: Application
    Filed: May 7, 1998
    Publication date: October 17, 2002
    Inventor: SUSUMU TSUJIMOTO
  • Publication number: 20020040530
    Abstract: Apparatus for utilizing a portable band saw includes a stand and a key which can be removably slidably secured in the stand. The guide plate is removed from a portable band saw and the key is attached to the saw at the location previously occupied by the guide plate. The key is then slidably secured in the stand to anchor the saw in the stand.
    Type: Application
    Filed: October 9, 2001
    Publication date: April 11, 2002
    Inventor: Timothy M. Crawley
  • Publication number: 20010015120
    Abstract: A bandsaw blade is manufactured from a blank having a plurality of teeth, at least some of which are to be set. Those set teeth are ground, prior to setting, such that at least an upper portion of the front rake face thereof forms an acute angle with a line extending perpendicular to a center line of the blank. Thereafter, those ground teeth are set to respective side of the blank, whereby a lateral rake angle of each set tooth is smaller than a side relief angle thereof. Preferably, the side relief angle is at least 5 degrees larger than the lateral rake angle.
    Type: Application
    Filed: April 10, 2001
    Publication date: August 23, 2001
    Inventor: Darren Hickey
  • Patent number: 6272963
    Abstract: A metal band saw is disclosed which is used to cut cutting-resistant materials such as SKD11, stainless steel, etc. and has characteristics of generating less chips on the cutting edge as well as improving wear resistance, resulting in very long service life. The blade material for the metallic band saw comprises high-speed steel containing 2 wt. % or less of vanadium (V), wherein 3 area % or more of carbide grains having a major diameter of 3 &mgr;m or more as observed in a metallographic structure.
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: August 14, 2001
    Assignee: Hitachi Metals, Ltd.
    Inventor: Shiho Fukumoto
  • Patent number: 6269722
    Abstract: A metal cutting bandsaw blade includes a strip and a recurring group of teeth projecting therefrom. The recurring group of teeth has a setting pattern and a height pattern. The setting pattern has at least three units selected from the following setting types: (a) unset teeth (b) teeth set to the right (c) teeth set to the left. The setting pattern includes at least one of each of the setting types. The height pattern has at least two selected from the following height types: (a) high teeth (b) low teeth. The height pattern includes at least one of each of the height types. The total number of teeth in the recurring group is the product of the number of setting units and the number of heights units. The number of setting units is incommensurable with the number of height units. The number of teeth set to the right in the recurring group is equal to the number of teeth set to the left. All of the set teeth in the group have substantially equal setting widths.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: August 7, 2001
    Assignee: Kapman AB
    Inventor: Håkan Hellbergh
  • Patent number: 6269724
    Abstract: An apparatus for forming a continuous web of material from a block of material is disclosed. The block is preferably a cylindrical block having a base and a generally vertical central axis extending generally orthogonally from the base. The apparatus comprises a rotatable platen such that the block may be rotatably supported, and a milling cutter for displacing portions of the block defining a displaced portion near the base of the block. A blade is positioned generally parallel to the central axis of the block, the blade positioned to cut into the block a predetermined distance from the central axis. The blade has a portion operatively disposed within the displaced portion of the block. The apparatus also comprises a drive mechanism for rotating the platen; as well as a linear drive mechanism for linearly decreasing the predetermined distance of the blade from the central axis.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: August 7, 2001
    Assignee: The Procter & Gamble Company
    Inventors: David Albert Sabatelli, Charles Zell Smith, III, Robert John Steller, Eric Richard Wilhelm
  • Patent number: 6196104
    Abstract: The invention relates to a method for producing sheets of polymeric surfacing, the sheets produced thereby, and the apparatus used to produce the sheets. The method includes providing a solid polymeric slab, and slicing the slab into sheets of surfacing. The sheets may include polymeric particles contained in a polymeric matrix. The particles may have a maximum linear dimension that is greater than the final thickness of the sheets, thereby resulting in an aesthetically pleasing “chunky” appearance. The apparatus used to slice the sheets produces a relatively smooth, uniform surface, and is capable of dramatically limiting the amount of variation in thickness within a finished sheet.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: March 6, 2001
    Assignee: Premark RWP Holdings, Inc.
    Inventors: Frank Bell Cloud, Robert Edward Respess
  • Patent number: 6164161
    Abstract: A blade sharpener for band saws used in the lumber and other wood processing industries, is installed on the band saw structure for sharpening the band saw blade periodically as required without need to remove the blade from the saw. The sharpener apparatus is retractable within the band saw frame when not in use, permitting the saw to be used normally. When the blade requires sharpening, the apparatus is extended and clamped about the blade. The blade is advanced to the proper position, and the sharpener is actuated to sharpen each of the teeth of the band saw blade in place on the saw. The mechanism includes an automatic shutoff to preclude further sharpening operation once the blade has been advanced through a full cycle and all teeth have been sharpened. The sharpener also includes adjustments for tooth pitch, hook angle, and tooth or gullet depth, enabling the device to be useable for sharpening virtually any band saw blade configuration.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: December 26, 2000
    Inventor: William D. Young
  • Patent number: 6119571
    Abstract: A bandsaw blade includes recurring identical groups of teeth. Each tooth group consists of two to six teeth. Each group is spaced from leading and trailing groups by first and second respective distances. The first and second distances being different from one another.
    Type: Grant
    Filed: April 10, 1998
    Date of Patent: September 19, 2000
    Assignee: Sandvik Aktiebolag
    Inventor: Robert C. Hayden, Sr.
  • Patent number: 6082239
    Abstract: A saw having a self-pumped hydrodynamic blade guide or bearing for retaining the saw blade in a centered position in the saw kerf (width of cut made by the saw). The hydrodynamic blade guide or bearing utilizes pockets or grooves incorporated into the sides of the blade. The saw kerf in the workpiece provides the guide or bearing stator surface. Both sides of the blade entrain cutting fluid as the blade enters the kerf in the workpiece, and the trapped fluid provides pressure between the blade and the workpiece as an inverse function of the gap between the blade surface and the workpiece surface. If the blade wanders from the center of the kerf, then one gap will increase and one gap will decrease and the consequent pressure difference between the two sides of the blade will cause the blade to re-center itself in the kerf.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: July 4, 2000
    Assignee: The Regents of the University of California
    Inventors: Kenneth L. Blaedel, Pete J. Davis, Charles S. Landram