Saw Blades Patents (Class 125/18)
  • Patent number: 10835973
    Abstract: A saw wire to cut hard and brittle materials is disclosed that comprises a steel wire that is provided with bends with segments in between. The average degree of bending of the bends is between 0.5% and 5%. Such a saw wire has a higher breaking load compared to saw wires having a conventional, higher average degree of bending. A method to measure the curvature is described as well as a process to make the inventive saw wire. The invention is applicable to any shaped saw wire for example a single crimped saw wire, a saw wire with at least two crimps in different planes, a saw wire with crimps rotating in a plane.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: November 17, 2020
    Assignee: BEKAERT BINJIANG STEEL CORD CO., LTD.
    Inventors: Alain Simonart, Wenxian Huang
  • Patent number: 10710179
    Abstract: Apparatus for converting rotary motion to linear motion and/or linear motion to rotary motion, comprising: a rotatable piece (24) having a surface, the piece being rotatable about an axis thereof; at least one member (26a-d) having a linking surface (44a-d) facing the surface of the rotatable piece and arranged for restricted movement at least in part laterally relative to the axis of the piece; and located between the surface of the rotatable piece and the or each reciprocating member, means for linking the linking surface of the respective member and the surface of the rotatable piece, wherein the means for linking (30a-d), the surface of the rotatable piece and the linking surface are configured to cooperate so that rotational motion of the rotatable piece causes linear movement of the at least one member, and/or linear movement of the at least one member causes rotational motion of the rotatable piece.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: July 14, 2020
    Assignee: Genius IP Ltd.
    Inventor: Teklemichael Sebhatu
  • Patent number: 10189181
    Abstract: The present invention is a method for slicing a workpiece, including: forming a wire row by a wire spirally wound between a plurality of wire guides and traveling in an axial direction, and pressing a workpiece against the wire row while supplying a processing liquid containing abrasive grains to a contact portion between the workpiece and the wire, wherein a used portion of the abrasive grains are subjected to a treatment with a mixed liquid of sulfuric acid and hydrogen peroxide, and the abrasive grains subjected to the treatment are reused for the slicing of a workpiece. This makes it possible to slice a workpiece with suppressing contamination of a wafer with metal impurities when abrasive grains are reused in slicing a workpiece by use of a wire saw.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: January 29, 2019
    Assignee: SHIN-ETSU HANDOTAI CO., LTD.
    Inventor: Keiichi Kanbayashi
  • Patent number: 9776306
    Abstract: The present invention relates to an electrodeposited diamond wire saw using patterned non-conductive materials in which non-conductive materials are pre-patterned along the outer circumference of a wire on which diamond grit should not be rubbed, before the diamond grit is upset, in order to efficiently improve the manufacturing process, and to a method for manufacturing same. According to one preferred embodiment of the invention, the method for manufacturing an electrodeposited diamond wire saw includes: printing a masking solution on the outer circumference of a wire in a plurality of directions when the wire is inserted for patterning; and upsetting diamond grit on the remaining regions of the outer circumference of the wire, with the exception of the patterned region.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: October 3, 2017
    Assignee: EHWA DIAMOND INDUSTRIAL CO., LTD.
    Inventors: Seh-Kwang Lee, Rak-Joo Sung, Sang-Wook Park
  • Patent number: 9486937
    Abstract: Provided is a wire saw intended for cutting concrete, stone or the like, more particularly, a diamond wire saw which is configured such that each front of beads is formed to be curved so that the beads can appropriately respond to resistance transmitted from an object to be cut without being in direct contact with the resistance, cutting diamond layers are electrodeposited and attached to the curved portions, and a large quantity of cutting chips are accommodate and are then discharged to the outside so that the number of installed beads can be easily adjusted.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: November 8, 2016
    Inventor: Hyo Young Kim
  • Patent number: 9409305
    Abstract: A plurality of bushings are coupled to one another via a series of bolts to provide an interlocking, articulating cutter. The bolts have a cylindrical end and a convex end. The convex ends are seated inside a concave socket coupled to the bushings. The cylindrical ends are coupled to a convex nut seated inside another concave socket coupled to an adjacent bushing. The convex ends of the bolts are configured to articulate inside the seat of the concave sockets. A washer may be placed between the bushings to provide a desired amount of flexibility and/or rigidity. The outer surface of the bushing comprises a cutting structure, such as a milled or clad cutting structure.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: August 9, 2016
    Assignee: BISSO MARINE, LLC
    Inventors: William A. Bisso, IV, Tjerko Jurgens
  • Patent number: 8789521
    Abstract: A saw (1) being portable and/or wheeled, such as a wall saw, floor saw or masonry saw, comprising a rotatable circular saw blade (3), a drive motor (5) with an motor output shaft (9) for rotating the saw blade (3), and a transmission (20) for interconnecting the motor output shaft (9) to the rotatable saw blade (3) in order to change an unsuitable high speed and low torque combination of the motor output shaft (9) into a more useable lower speed and higher torque combination at the rotatable tool (3), wherein the transmission (20) comprises two adjustable friction saw protective clutches in parallel, which can be set at a desired predetermined value, so as to limit the maximum size of the forces that the teeth and gears of the transmission (20) are exposed to. No over dimensioning is necessary, and the transmission (20) will make out fine in rough environments. The transmission may be of single-speed or two-speed type.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: July 29, 2014
    Assignee: Husqvarna AB
    Inventor: Andreas J├Ânsson
  • Patent number: 8656901
    Abstract: A cutting tip for a cutting tool used to cut or drill a brittle workpiece such as stone, brick, concrete, or asphalt and a frame saw provided with the cutting tip are disclosed. The swing type cutting tip including abrasive particles has a specific arrangement capable of enhancing the cutting efficiency of the abrasive particles, and thus achieving an enhancement in cutting performance and an increase in lifespan. The cutting tip includes a plurality of abrasive particles to cut a workpiece while swing. At least a part of the abrasive particles are arranged in the form of abrasive particle groups. Each abrasive particle group is constituted by at least two abrasive particles. At least a part of the abrasive particles of the abrasive particle groups are overlapped in a cutting direction.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: February 25, 2014
    Assignees: Ehwa Diamond Industrial Co., Ltd., General Tool, Inc.
    Inventors: Soo-Kwang Kim, Hee-Dong Park, Nam-Kwang Kim
  • Patent number: 8360828
    Abstract: A cutting tool suitable for cutting a workpiece placed on a photocurable adhesive layer is provided. The cutting tool includes a main body, a cutting layer and a light emitting material. The cutting layer is disposed on a surface of the main body and is applicable in cutting the workpiece. The light emitting material is disposed inside the cutting layer or between the main body and the cutting layer. The light emitting material is suitable for emitting a light capable of curing the photocurable adhesive layer adjacent to a cutting path as the workpiece is cut by the cutting layer.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: January 29, 2013
    Assignee: Advanced Semiconductor Engineering, Inc.
    Inventors: Jan-Chen Huang, Chu-Ching Sung, Ming-Yu Huang
  • Patent number: 8047192
    Abstract: An improved frame saw system has multiple blades for cutting slabs of masonry materials. The improved systems and methods allow for cutting masonry materials into slabs having surface small deviations. A frame saw system may include a support structure of unifying material bonded to at least one of the blades for keeping the blades in fixed relative positions. The support structure may be removable from the frame saw system as the blades are engaged in a swinging motion cutting into the block. In addition, a process for cutting masonry blocks of granite, marble, rock, and the like, includes pretreating the surface of the block with a skim coat to fill surface irregularities prior to cutting operations. A frame saw system may contain one or more spacers between the saw blades wherein a compressive force is applied across the blades connected to a frame to reduce deflection of the blades while cutting.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: November 1, 2011
    Assignee: Ehwa Diamond Industrial Co., Ltd.
    Inventors: Markus Jakobuss, Dennis W. Turner, Stephen Hayden, Andre Kuehn, Kurt Proske
  • Patent number: 7637257
    Abstract: An improved frame saw system has multiple blades for cutting slabs of masonry materials. The improved systems and methods allow for cutting masonry materials into slabs having surface small deviations. A frame saw system may include a support structure of unifying material bonded to at least one of the blades for keeping the blades in fixed relative positions. The support structure may be removable from the frame saw system as the blades are engaged in a swinging motion cutting into the block. In addition, a process for cutting masonry blocks of granite, marble, rock, and the like, includes pretreating the surface of the block with a skim coat to fill surface irregularities prior to cutting operations. A frame saw system may contain one or more spacers between the saw blades wherein a compressive force is applied across the blades connected to a frame to reduce deflection of the blades while cutting.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: December 29, 2009
    Assignee: Diamond Innovations, Inc.
    Inventors: Markus Jakobuss, Dennis W. Turner, Stephen Hayden, Andre Kuehn, Kurt Proske
  • Patent number: 7614395
    Abstract: The present invention describes electroformed thin-wall nickel cutting saws or blades that are impregnated with diamond abrasives. The thin-wall saws are formed with a plurality of raised portions and an equal plurality of recessed portions, with each raised portion alternating with a recessed portion, the raised and recessed portions are substantially parallel and are connected by transition portions. In another embodiment, some of the transition regions are formed with intermediate steps or partially raised and recessed portions. These intermediate steps or partially recessed and raised portions allow more uniform distribution of matrix material across a kerf width D1 as the cutting saw is spun, thereby, giving the cut edge a substantially square profile.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: November 10, 2009
    Assignee: Kim & Ed Pte Ltd
    Inventor: Edward Robert Perry
  • Publication number: 20090229592
    Abstract: A cutting tip for a cutting tool used to cut or drill a brittle workpiece such as stone, brick, concrete, or asphalt and a frame saw provided with the cutting tip are disclosed. The swing type cutting tip including abrasive particles has a specific arrangement capable of enhancing the cutting efficiency of the abrasive particles, and thus achieving an enhancement in cutting performance and an increase in lifespan. The cutting tip includes a plurality of abrasive particles to cut a workpiece while swing. At least a part of the abrasive particles are arranged in the form of abrasive particle groups. Each abrasive particle group is constituted by at least two abrasive particles. At least a part of the abrasive particles of the abrasive particle groups are overlapped in a cutting direction.
    Type: Application
    Filed: February 28, 2007
    Publication date: September 17, 2009
    Applicant: EHWA DIAMOND INDUSTRIAL CO., LTD.
    Inventors: Soo-Kwang Kim, Hee-Dong Park, Nam-Kwang Kim
  • Patent number: 7527050
    Abstract: An abrasive cutting blade is provided to achieve high-quality surface finishes at high feed rates. The blade is fabricated by electroplating fine abrasive onto a steel cathode disc to form a first layer, followed by electroplating a second layer of coarser abrasive onto the first layer. A third layer of fine abrasive is then electroplated onto the second layer. The resulting composite is then removed from the cathode disc to form a multi-grit, multi-layer, hub-less blade.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: May 5, 2009
    Assignee: Saint-Gobain Abrasives Technology Company
    Inventor: Robert F. Corcoran, Jr.
  • Publication number: 20090090344
    Abstract: Monofilament metal saw wire for a wire saw, wherein the saw wire being provided with a plurality of crimps. The crimps are arranged in at least two different planes, such that, when measured, between measuring rods of a micrometer, over a length comprising crimps in at least two different planes, a circumscribed enveloping D diameter of the saw wire is between 1.05 and 1.50 times a diameter d of the saw wire itself.
    Type: Application
    Filed: December 12, 2005
    Publication date: April 9, 2009
    Applicants: Trefilarbed Bettembourg S.A., HCT Shaping Systems S.A.
    Inventor: Jean-Pierre Vaubourg
  • Patent number: 7213591
    Abstract: A cutting tool in which a disc-like cutter blade is fixed to a spindle of a rotary electric tool, comprising a first guide plate, which is attached on electric tool side to a cutter blade such that it is capable of rotating freely and makes contact with the reference surface of a cutting object material on a process of cutting progress so as to guide along a cutting direction, an inner flange located between the first guide plate and the cutter blade so as to specify a distance X from the reference surface of the cutting object material to a cut groove and a second guide plate which is provided on an opposite side to the electric tool side of the cutter blade and makes contact with a cut face of the cutting object material on a process of the cutting progress so as to stop moving in the cutting direction to specify a cut groove depth Y.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: May 8, 2007
    Assignees: Sankyo Diamond Industrial Co., Ltd, NAO Enterprise Inc.
    Inventors: Nobutoshi Nomoto, Shin Oshima, Naohisa Takahashi
  • Patent number: 7073496
    Abstract: An abrasive cutting blade is provided to achieve high-quality surface finishes at high feed rates. The blade is fabricated by electroplating fine abrasive onto a steel cathode disc to form a first layer, followed by electroplating a second layer of coarser abrasive onto the first layer. A third layer of fine abrasive is then electroplated onto the second layer. The resulting composite is then removed from the cathode disc to form a multi-grit, multi-layer, hub-less blade.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: July 11, 2006
    Assignee: Saint-Gobain Abrasives, Inc.
    Inventor: Robert F. Corcoran
  • Patent number: 7000606
    Abstract: An apparatus for cutting a chamfer on an upper edge of a concrete slab includes a hub designed for installation on the threaded output spindle of an angle grinder, and a specially-modified diamond-grit-edged rotary blade which mounts on the hub. For a preferred embodiment of the hub, an attachment collar is unitary and concentric with both a blade mounting flange having countersunk attachment screw holes and a blade centering shoulder on the flange. The attachment collar has at least one pair of flattened parallel sides for receiving a wrench used to tighten the hub on the output spindle. The blade, which is equipped with both countersunk attachment holes and a central positioning aperture sized to fit closely over the blade centering shoulder, is attachable with countersinking screws to the mounting flange so that the head of each screw is flush with the surface of the blade.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: February 21, 2006
    Assignee: Precision Concrete Cutting, Inc.
    Inventor: M. Ballard Gardner
  • Patent number: 7001403
    Abstract: A saw blade for medical, in particular surgical, applications having a recess for mounting the saw blade inside a saw which exerts an saw movement, especially an oscillating saw movement, to the saw blade. In order to improve the dynamic behavior of the saw blade, longitudinal flat areas of a surface of the saw blade are provided with a plurality of superficial impressions of a defined contour that are aligned at an angle to the longitudinal axis of the saw blade.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: February 21, 2006
    Inventors: Thomas Hausmann, Christian Hendrich
  • Patent number: 6932076
    Abstract: An enhanced and improved diamond circular saw blade of an invention is disclosed. The invention includes welding and jointing of the periphery of a circular steel blade having an axle bore and a plurality of arc-shaped copper alloy metal-sheets. Each arc-shaped copper alloy metal-sheet includes a plurality of openings, which provide the space required to accommodate a plurality of diamond particles. The width of an opening is somewhat wider than the diameter of an individual diamond particle. When the diamond particles are placed inside each opening of the copper alloy metal-sheets, a pair of molds is used to compress the top and the bottom of a plurality of metal teeth between adjacent openings simultaneously. By compressing this pair of molds, the metal teeth between adjacent openings are deformed, so as to squeeze along the direction of these openings and to enclose and hold the diamond particles. As a result, the surface is of an indentation-shaped saw plate.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: August 23, 2005
    Inventors: Chien-Cheng Liao, Fang-Chun Yu
  • Patent number: 6920871
    Abstract: The invention relates to a cable saw device (1) comprising a sawing cable (25) and a cable storage device (30) which is used for temporary accommodation of the sawing cable (25). The cable storage device (30) comprises several deflection rollers (5,6). At least two of said deflection rollers (5,6) are placed at a modifiable axial distance (A) from each other. The cable saw (25) is driven by several deflection rollers (5). Means for compensating the different speeds of the cable saw (25) are arranged between the driving deflection rollers (5).
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: July 26, 2005
    Assignee: Tyrolit Hydrostress AG
    Inventor: Hans Bieri
  • Patent number: 6845767
    Abstract: A saw blade of uniform abrasive segments with undercut protection to prevent loss of segments and to extend blade life. A metal core includes a uniform peripheral contour formed as a series of spaced apart, segment mounting sections separated by radial gullet channels. A diamond cutting segment is securely bonded to each such mounting section at a bonding interface between the segment and the metal core. Adjacent the ends of each segment on opposite sides of successive gullet channels, are upstanding ears which at least register with and extend through the radial arc of the bonding interface between the segments and the metal core. Both the upstanding ears and the region beneath each segment are preferably overcoated with a wear protection material such as carbide. The overcoated region beneath each segment includes a contoured edge to assist in directing swarf away from the cutting groove.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: January 25, 2005
    Assignee: Diamant Boart, Inc.
    Inventor: Metin Sakarcan
  • Patent number: 6539932
    Abstract: A thin strip-shaped grindstone 12 is held flat under tension and moved backwards and forwards in the longitudinal direction, while the grindstone is moved in a direction perpendicular to a cylindrical ingot 1 and cuts the ingot. A metal-bonded grindstone is used as the strip-shaped grindstone 12, at least one pair of electrodes 23 are disposed adjacent to both surfaces of the metal-bonded grindstone one on each side of the ingot. The metal-bonded grindstone is made the positive electrode and DC voltage pulses are applied between the grindstone and the electrodes, and at the same time, a conducting processing fluid 25 is fed to the gaps between the metal-bonded grindstone and the electrodes, and both surfaces of the metal-bonded grindstone are dressed electrolytically on both sides while the cylindrical ingot is being cut by the metal-bonded grindstone.
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: April 1, 2003
    Assignees: Riken, Showa Denko K.K.
    Inventors: Hitoshi Ohmori, Masashi Shigeto, Nobuyuki Nagato
  • Patent number: 6526960
    Abstract: A wire-saw constituted by a rope-like core wire and a cylindrical coil-like saw-wire body wounded around the core wire, and a large number of abrasive grains firmly fixed to the saw-wire body by metal. Problems of conventional wire-saws, such as unstable working performance, a short tool life, low safety and low reliability, and so on, are solved.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: March 4, 2003
    Assignee: Asaoka Co., Ltd.
    Inventors: Toshihiko Asada, Tadao Ishikawa
  • Patent number: 6463920
    Abstract: A work cutting apparatus comprises a plurality of cutting blades each including a metal plate phase containing a super hard abrasive grain dispersed entirely thereon. A work made of a rare-earth alloy magnet member is submerged in a coolant in a container. The work submerged in the coolant is cut by rotating the cutting blades at a high speed not slower than 8000 rpm and by moving the cutting blades to the work vertically or along a normal line passing a tangential point between the cutting blade and the work. The coolant may be supplied from a hose to a cutting region at a time of the cutting. At the time of cutting, the work is vibrated in a direction parallel to a main surface of the cutting blade and perpendicular to a direction of the cutting. Preferably, the cutting blade has a tip portion formed with a cutout, and a spacer including two main surfaces each having an outer circumferential portion formed with an annular stepped portion is inserted between the cutting blades.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: October 15, 2002
    Assignee: Sumitomo Special Metals Co., Ltd.
    Inventors: Sadahiko Kondo, Toshifumi Hiyoke, Toshiaki Sasaki
  • Patent number: 6457468
    Abstract: The vertical blade saw assembly for ceramic and masonry materials is designed to provide an assembly that allows the user to make cuts of any shape to ceramic tiles and masonry materials in order to permit the installation of precision cuts for a particular setting. The assembly has an electric drive motor that is protected from the coolant used to keep the blade from overheating. The assembly has a plurality of parallel arms that are connected and permit the oscillating motion of the arms. The vertical blade is connected to the arms which place the blade in motion. The assembly has a base unit to provide support for the assembly. A coolant tray is positioned around the base unit. A water pump and accompanying tubing is used to circulate the coolant to the blade. Several cutting blades are also disclosed.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: October 1, 2002
    Inventor: Nicolas Goldberg
  • Patent number: 6422229
    Abstract: A device for cutting integrated circuit package boards is disclosed. The device includes a circular saw blade. A plurality of slots are cut in the circumference of the circular saw blade, at least some of the plurality of slots having a depth of at least approximately 2 mm. The blade may have a plurality of first and second slots of different depths cut in the circumference of the saw blade arranged in an alternating pattern.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: July 23, 2002
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Edgardo Padrinao, Adi Anuar Basarudin
  • Patent number: 6138657
    Abstract: A stone cutter for cutting stock stone, in particular marble without causing undesirable and uneconomical breakage of the stone. The stone cutter comprises a movable cutter blade assembly, where the movable cutter blade assembly comprises a movable blade holder and an upper cutter blade; a stationary blade assembly, where the stationary blade assembly comprises a stationary blade holder and a stationary blade. The movable cutter blade assembly is mounted proximate an end of the stationary blade assembly. The stone cutter further comprises a support, where the support comprises at least a base and a table and provides a stable rest for the stationary blade assembly. A handle assembly is also provided to move the movable cutter blade assembly in a linear reciprocating motion toward and away from the stationary blade assembly. The distance between the stationary blade and movable blade are generally equidistant throughout movement of the movable cutter blade assembly.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: October 31, 2000
    Inventor: Arcade C. Richard
  • Patent number: 6105568
    Abstract: A diamond wire saw includes a steel cable, a plurality of rotary diamond abrasive barrels respectively mounted around the steel cable, and pairs of compression springs respectively mounted around the steel cable and fastened to each of the rotary diamond abrasive barrels at tow opposite ends by packing rings, the rotary diamond abrasive barrels each having a spiral convex portion and a spiral concave portion arranged in parallel around the periphery, and a diamond abrasive layer of substantially equal thickness covered on the spiral convex portion and the spiral concave portion, the diamond abrasive layer having a plurality of diamond cutting grains fastened thereto for cutting things.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: August 22, 2000
    Inventor: Fang-Chun Yu
  • Patent number: 6021773
    Abstract: In a wire saw primarily intended for sawing stone with the aid of light portable equipment, a continuous, easily flexed wire loop or wire on which cutting elements are uniformly spaced includes elastomeric spacing elements between the cutting elements. With the intention of increasing the flexibility of the wire loop and its ability to endure bending as it runs around guide sprocket wheels of small diameter, the diameter of the wire or the wire loop is reduced. A narrow waist bore which centers against the wire enables the cutting elements to be threaded in a centerd way on the wire. The spacing elements are applied thinly on the wire between the cutting elements. The elastomeric material functions to resiliently center the cutting elements by being pressed against the center plane of the cutting elements from both sides into recesses provided in the end-walls of the cutting elements, theses recess being flared at a wide angle of about 90 degrees.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: February 8, 2000
    Assignee: Hagby Asahi AB
    Inventor: Anders Svensson
  • Patent number: 5871005
    Abstract: A wheel cutter blade has a plurality of blade bodies affixed around the periphery of a blade base plate. The inner peripheral portion of each blade body is joined to the blade base plate. The peripheral portion of each blade body also joins to the peripheral portion of the adjacent blade bodies, such that the blade bodies form a consolidated annular molded body. Each blade body contains grinding granules only at the outer peripheral portions of each blade body, so that the grinding granules are not in contact with the blade base plate. The blade bodies may have shallow surface groove channels on the front and rear sides of each blade body, such that an air flow is created. This air flow is useful to reduce friction heat and exhaust ground dust.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: February 16, 1999
    Inventor: Kimiko Sueta
  • Patent number: 5702492
    Abstract: In a plating process for constructing a nickel/embedded abrading particle saw blade on a saw blade substrate, the step of plating abrading particles onto and within the supporting copper substrate is disclosed. The beveled edge of a circular aluminum saw blade blank is first coated with a thin zinc layer. Thereafter, copper and abrading particles are plated followed by conventional abrading particle and nickel plating. Conventional material removal thereafter follows at the saw blade side adjacent the circular saw blade blank, saw blade edge, and copper layer. With removal of the copper layer, abrading particles originally partially embedded in the copper layer are exposed for cutting. The need for electro-polishing and garnating is eliminated in so far as exposure of abrading particles is concerned. The final saw blade product produced has uniform cutting edges on both sides with less likelihood of producing edge fractures, chips, or cracks in silicon wafers during separation.
    Type: Grant
    Filed: June 11, 1996
    Date of Patent: December 30, 1997
    Assignee: Dynatex International
    Inventor: Charles N. Elsbree
  • Patent number: 5588419
    Abstract: In a plating process for constructing a nickel embedded abrading particle saw blade on a saw blade substrate, the step of plating abrading particles onto and within the supporting copper substrate is disclosed. The beveled edge of a circular aluminum saw blade blank is first coated with a thin zinc layer. Thereafter, copper and abrading particles are plated followed by conventional abrading particle and nickel plating. Conventional material removal thereafter follows at the saw blade side adjacent the circular saw blade blank, saw blade edge, and copper layer. With removal of the copper layer, abrading particles originally partially embedded in the copper layer are exposed for cutting. The need for electro-polishing and garnating is eliminated in so far as exposure of abrading particles is concerned. The final saw blade product produced has uniform cutting edges on both sides with less likelihood of producing edge fractures, chips, or cracks in silicon wafers during separation.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: December 31, 1996
    Assignee: Dynatex International
    Inventor: Charles N. Elsbree
  • Patent number: 5438973
    Abstract: A cutting blade the core of which is generally tear-drop shaped in cross-section. The sides of the tear-drop shaped core form an included angle of not less than about 5 degrees (and typically not less than about 9 degrees), and abrasive is provided essentially on only the wide bottom surface of the core.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: August 8, 1995
    Assignee: Crystal Systems, Inc.
    Inventors: Frederick Schmid, Maynard B. Smith, Chandra P. Khattak
  • Patent number: 5150641
    Abstract: The blade having a convex or concave edge and a workpiece engaged by the blade are relatively displaced by an oscillating parallelogrammatic linkage so that an arcuate contour is cut in the workpiece. The oscillating radius of the parallelogrammatic linkage and the radii of the curvature of the blade and the cut contour are dimensioned so that the contact between the cutting edge of the blade and the workpiece is a quasi-point contact. This allows rapid cutting for thin pressure-sensitive materials.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: September 29, 1992
    Inventor: Peter G. Werner
  • Patent number: 5078035
    Abstract: A circular saw blade having an inner drive portion, an outer cutting edge portion, and a plurality of angled slots extending through the blade from the first lateral surface through to the second lateral surface of the blade. The angled slots are radially spaced inboard of the outer cutting edge portion and they are closed and thus do not open to the outer diameter of the saw blade. The angled slots serve to produce an audible signal in the event the saw blade is rotated in the wrong direction of rotation upon a drive unit.
    Type: Grant
    Filed: November 28, 1990
    Date of Patent: January 7, 1992
    Assignee: Diamond Products, Inc.
    Inventors: Karl H. Moller, Andrew L. Jedick
  • Patent number: 4930486
    Abstract: A method is provided for effectively and precisely cutting metals, ceramics, composite materials and the like by use of a blade having an elongated metal band body and a conductive abrasive layer adhered to a cutting edge thereof, with a first voltage difference selectively applied continuously or intermittently between the blade and an electrode disposed close to a side of the blade. A conductive processing fluid is supplied to a cutting portion between the blade and the workpiece and the first applied voltage is preferably applied to provide a negative pole on the blade side and a positive pole on the workpiece. Electrolytic, electro-discharge and grinding operations are thus provided simultaneously, to thereby permit rapid and precise cutting of hard, bittle and difficult-to-cut materials while maintaining the cutting effectiveness of the blade. In one aspect of this method, the blade is also provided with an insulation layer on at least a metal surface, and the cutting effects are thereby improved.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: June 5, 1990
    Assignee: Applied Magnetic Lab Co., Ltd.
    Inventor: Akio Kuromatsu
  • Patent number: 4920946
    Abstract: Apparatus is provided for effectively and precisely cutting metals, ceramics, composite materials and the like by use of a blade having an elongated metal band body and a conductive abrasive layer adhered to a cutting edge thereof, with an electrode disposed close to a side of the blade and a voltage difference is selectively applied continuously or intermittently between the electrode and the blade which is pressed against and reciprocated relative to the workpiece. A conductive processing fluid is supplied to a cutting portion between the blade and the workpiece and the processing voltage is continuously or intermittently applied to preferably provide a minus pole on the blade side and a plus pole on the work side. Electrolytic, electro-discharge and grinding operations are thus provided simultaneously, to thereby permit rapid and precise cutting of metals and other hard, brittle and difficult-to-cut materials whila maintaining the cutting effectiveness of the blade.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: May 1, 1990
    Assignee: Applied Magnetic Lab. Co., Ltd.
    Inventor: Akio Kuromatsu
  • Patent number: 4894917
    Abstract: The present invention provides a saw blade for use in a jig saw mechanism in which a drive member is caused to reciprocate axially and to reciprocate a saw blade carried by one end only thereof on said drive member, which saw blade comprises:a. an axially elongated generally rod-like blade member having a grit edge cutting surface thereto, one end of said blade member being secured into a blade mounting member;b. a blade mounting member comprising an axial socket into which the end of the blade member is secured; andc. a securing member extending axially from the said mounting member and adapted to be secured to the reciprocating drive member of a jig saw mechanism.
    Type: Grant
    Filed: April 11, 1989
    Date of Patent: January 23, 1990
    Assignee: C4 carbides (International) Limited
    Inventor: Peter J. Nicolson
  • Patent number: 4856490
    Abstract: An improved wire saw having a wire rope, a resilient layer covering the outer periphery of the wire rope, and a plurality of sleeves mounted on the wire rope through the resilient layer at spacings, the sleeves having an abrasive layer on their outer periphery. The resilient layer has a smaller outer diameter at portions between the sleeves than over and adjacent to the sleeves. The sleeves or the resilient layer is provided with an engaging portion to axially extend to prevent one of them from turning with respect to the other.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: August 15, 1989
    Assignee: Osaka Diamond Industrial Co., Ltd.
    Inventors: Tsunezo Kawase, Shuichiro Koroku, Kunio Okada
  • Patent number: 4776316
    Abstract: An apparatus and method for wafering an ingot of semiconductor material. Wafering blades are fabricated from one or more layers of a fiber reinforced plastic tape and coated with an abrasive material which is embedded into the exposed flat surfaces of the blades. An assembly of such blades is used in a wafering device in which the blades are reciprocated while the ingot is plunged against the cutting edges of the blades. The primary cutting action occurs as exposed ends of the fiber material at the blade edges contact the ingot. The abrasive material on the blade sides provides additional side cutting action and produces a polished finish on the surfaces of the resulting wafers.
    Type: Grant
    Filed: April 29, 1987
    Date of Patent: October 11, 1988
    Inventor: Brian I. Ashkenazi
  • Patent number: 4709699
    Abstract: A Gigli saw used by a surgeon to cut bones is constructed of a plurality of round wires which have been deformed in a coining stand so that they form one polygonal shape which in the preferred embodiment is square. This square strand is then twisted along its own axis in a given direction of lay. It is then heat-treated for stress relief and a plurality, such as three, of such strands are twisted together to form a cable. This results in a Gigli saw blade with many cutting edges formed at the edges of the polygon as each such edge is presented at the periphery of the cable. Preferably, the strands have a different number of twists from that of the cable, and are twisted in the opposite direction so that the cutting edges lie at about 5 to 15 degrees relative to the longitudinal axis of the cable.
    Type: Grant
    Filed: August 6, 1986
    Date of Patent: December 1, 1987
    Assignee: Fort Wayne Metals Research Products Corporation
    Inventors: Mark S. Michael, Scott A. Glaze
  • Patent number: 4674474
    Abstract: A wire saw for cutting of stone is disclosed. Abrasive cutter elements are borne on slidable rotatable carriers encompassing a single filament metallic wire. The longitudinal motion of the slidable carrier elements is limited by helical spring restraining elements which are joined to the wire by a non-embrittling process leaving the rear end of the helical spring restraining element fixed to the wire but letting the front portion compress along the axis of the wire thereby absorbing shock imparted to the abrasive cutter elements upon impact with the stone.
    Type: Grant
    Filed: August 6, 1986
    Date of Patent: June 23, 1987
    Assignee: Engelhard Corporation
    Inventor: Gerard J. Baril
  • Patent number: 4619172
    Abstract: A cutting element for being longitudinally connected to form a saw which can cut in two or four planes and "to and fro" because of its self-cleaning action during use provided by rotating a blade 90.degree. in relation to its connected preceeding blade.
    Type: Grant
    Filed: July 5, 1985
    Date of Patent: October 28, 1986
    Inventor: Rafael Perez
  • Patent number: 4517954
    Abstract: A cutting element, for use on the cutting member of a variety of cutting machines, particularly for stone cutting machines. The cutting element includes a base member substantially permanently fixable to the cutting member, and a cap member selectively engageable with the base member. The cap member has hooks that mechanically lock the cap member to the base member, so removal of the cap member during cutting motion is resisted mechanically. The cap member can be moved laterally of the base member for removal; and, a locking pin or screw selectively holds the cap member against such lateral motion.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: May 21, 1985
    Assignee: Gran-Quartz Trading, Inc.
    Inventors: Peter T. deKok, John Phildius
  • Patent number: 4393450
    Abstract: A three-dimensional model-making system that employs a cutting wire under tension and acting in a reciprocating mode to shape an easily-machinable material. The machine has three servo-driven axes including an x and y axis and a rotational axis.
    Type: Grant
    Filed: August 11, 1980
    Date of Patent: July 12, 1983
    Assignee: Trustees of Dartmouth College
    Inventor: Robert B. Jerard
  • Patent number: 4387698
    Abstract: A blade head assembly for a slurry saw comprises a plurality of elongated, thin (0.02 to 0.14 millimeter thick) blades in spaced parallel relationship made of a metallic glass which is at least 50 percent amorphous and is based on one or more of nickel, iron, cobalt, chromium and vanadium.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: June 14, 1983
    Assignee: Allied Corporation
    Inventor: Samir T. Bustany
  • Patent number: 4384564
    Abstract: A narrow wire blade with abrasive particles plated within a longitudinally-extending, plated cutting portion that extends from only one side of a wire core and has parallel side walls spaced by a controlled width.
    Type: Grant
    Filed: January 22, 1981
    Date of Patent: May 24, 1983
    Assignee: Crystal Systems Inc.
    Inventors: Maynard B. Smith, Frederick Schmid, Chandra P. Khattak
  • Patent number: 4258763
    Abstract: A plurality of cutting teeth are disposed at intervals in a complete circle around the periphery of a flexible cutting element. A frame is coupled to the cutting element to receive and guide the cutting element. Means is coupled to the cutting element and to the frame to impart an oscillatory motion to the cutting element to enable the oscillating teeth of the cutting element to cut a selected material. A simplified version of the present invention includes first and second handles coupled to opposite ends of the flexible cutting element to enable an operator to impart an oscillatory motion to the cutting element.
    Type: Grant
    Filed: November 20, 1978
    Date of Patent: March 31, 1981
    Inventors: Fernando Figueredo, Guillermo A. Valdes, Armando R. Framil
  • Patent number: 4187828
    Abstract: A cutting process in which a blade under tension is moved relative to a workpiece. The blade has a longitudinally-extending abrasive-holding portion defined by blade material that is softer than the workpiece to be cut and overlies a high tensile strength core. The abrasive-holding portion defines a cutting surface extending between opposite sides of the blade and defining less than one-half the total outer surface of the blade, and abrasive particles are partially embedded into a longitudinally-extending segment of the cutting surface but not into the sides of the blade.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: February 12, 1980
    Assignee: Crystal Systems, Inc.
    Inventor: Frederick Schmid