With Rubber Or Reaction Product Thereof Patents (Class 51/299)
  • Publication number: 20140345202
    Abstract: A composition that can be used for abrasive processing is disclosed. The composition includes an organic bond material, an abrasive material dispersed in the organic bond material, and a plurality of microfibers uniformly dispersed in the organic bond material. The microfibers are individual filaments having an average length of less than about 1000 ?m. Abrasive articles made with the composition exhibit improved strength and impact resistance relative to non-reinforced abrasive tools, and improved wheel wear rate and G-ratio relative to conventional reinforced tools. Active fillers that interact with microfibers may be used to further abrasive process benefits.
    Type: Application
    Filed: August 6, 2014
    Publication date: November 27, 2014
    Inventors: Michael W. Klett, Karen Conley, Steven F. Parsons, Han Zhang, Arup K. Khaund
  • Patent number: 8709114
    Abstract: A method of manufacturing polishing layers for use in chemical mechanical polishing pads is provided, wherein a plurality of polishing layers are derived from a cake, wherein the formation of density defects in the cake and the surface roughness of the polishing layers formed are minimized.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: April 29, 2014
    Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.
    Inventors: Brian T. Cantrell, Kathleen McHugh, James T. Murnane, George H. McClain, Durron A. Hutt, Robert A. Brady, Christopher A. Young, Jeffrey Borcherdt Miller
  • Patent number: 8540785
    Abstract: A bonded abrasive tool includes a bonded abrasive body having a bond matrix material including an organic bond material, abrasive grains contained within the bond matrix material, and chopped fiber bundles within the bond matrix material. The tool further has a porosity within the bonded abrasive body, wherein a majority of the porosity includes pores surrounding the chopped fiber bundles.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: September 24, 2013
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventors: Konstantin S. Zuyev, Walter Strandgaard, Joel A. Fife, Muthu Jeevanantham
  • Publication number: 20130244542
    Abstract: Abrasive articles including a body having a first abrasive layer, a second abrasive layer and one or more reinforcing layers for use with cordless tools have a reduced thickness with respect to conventional counterparts. Techniques for producing and using such abrasive articles are described. In one embodiment, the first abrasive layer and the second abrasive layer comprise abrasive particles in a bond material. In an embodiment, a reinforcing layer is disposed between the first abrasive layer and the second abrasive layer. In a particular embodiment, the body comprises an average thickness of not greater than about 5 mm. In another particular embodiment, the abrasive particles can comprise silicon carbide.
    Type: Application
    Filed: March 1, 2013
    Publication date: September 19, 2013
    Inventors: Taeke Meerveld, Alessandro R. Milani, Marko W. Versteegen, Grzegorz Wojciechowski, Karolina Rozanska-Zaworska
  • Patent number: 8252075
    Abstract: A bonded abrasive tool includes a bonded abrasive body having a bond matrix material comprising an organic bond material, abrasive grains contained within the bond matrix material, and not greater than about 5 vol % chopped fiber bundles within the bond matrix material. The tool further has a porosity within the bonded abrasive body, wherein a majority of the porosity comprises pores surrounding the chopped fiber bundles.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: August 28, 2012
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Goabain Abrasifs
    Inventors: Konstantin S. Zuyev, Walter Strandgaard, Joel A. Fife, Muthu Jeevanantham
  • Publication number: 20120167477
    Abstract: An abrasive article comprising an abrasive particle including a core comprising a compressible material, an intermediate layer comprising a binder material overlying an exterior surface of the core, and an outer layer comprising abrasive grains overlying the intermediate layer.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 5, 2012
    Applicants: SAINT-GOBAIN ABRASIFS, SAINT-GOBAIN ABRASIVES, INC.
    Inventors: Jianna Wang, Guan Wang, Charles G. Herbert
  • Publication number: 20110232198
    Abstract: An abrasive article includes an abrasive layer having an array of protrusions. The abrasive layer has a thickness not greater than about 500 mils. The abrasive article is free of a backing layer.
    Type: Application
    Filed: June 7, 2011
    Publication date: September 29, 2011
    Applicants: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs
    Inventor: Ramaswamy Sankaranarayanan
  • Patent number: 8025557
    Abstract: A flexible sanding composite in accordance with the principles of the invention includes about 10% to about 70% by weight liquid component, such as polybutene and/or oleic acid; about 30% to about 80% by weight abrasive material including calcium carbonate and aluminum oxide; and about 0% to about 5% by weight synthetic rubber. The invention also includes a method of removing dirt or contamination from a surface, or flattening surface irregularities, which includes rubbing the flexible sanding composite against the surface repeatedly until the dirt or contamination is diminished.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: September 27, 2011
    Assignee: Illinois Tool Works Inc.
    Inventors: William R. Andrichik, Mohsen S. Marzouk
  • Patent number: 7985269
    Abstract: Lofty open nonwoven abrasive articles, unitized abrasive wheels, and convolute abrasive wheels include a dipodal aminosilane. Methods of making the abrasive articles are also included.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: July 26, 2011
    Assignee: 3M Innovative Properties Company
    Inventor: Bret W. Ludwig
  • Patent number: 7884020
    Abstract: A polishing cloth used in the chemical mechanical polishing treatment comprises a molded body of (meth)acrylic copolymer having an acid value of 10 to 100 mg KOH/g and a hydroxyl group value of 50 to 150 mg KOH/g.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: February 8, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hideaki Hirabayashi, Naoaki Sakurai, Akiko Saito, Koji Sato, Tomiho Yamada
  • Patent number: 7875335
    Abstract: The present invention provides a polishing pad. The polishing pad comprises a transparent part and a high molecular weight layer. The transparent part has an uneven side surface and the profile of the uneven side surface is selected from a group consisting of a serrated shape, a wavy shape and a toothed shape. The high molecular weight layer encircles the transparent part.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: January 25, 2011
    Assignee: IV Technologies Co., Ltd.
    Inventors: Wen-Chang Shih, Yung-Chung Chang, Min-Kuei Chu, Lung-Chen Wei
  • Patent number: 7811342
    Abstract: A polyurethane adhesive composition, formed by combining a non-blocked urethane prepolymer and a polymeric polyol, is used for preparing a coated abrasive tool. The polyurethane adhesive composition is applied over a substrate to thereby form a polyurethane-adhesive-composition-coated substrate. Curing the polyurethane-adhesive-composition-coated substrate forms a polyurethane-adhesive-coated substrate. An abrasive material is applied over the substrate at a time selected from the group consisting of prior to, after, and simultaneously with, the application of the polyurethane adhesive composition to the substrate, to thereby form the coated abrasive tool. The coated abrasive tool preferably includes a polyurethane adhesive resin coating over the substrate, the resin coating being formed from a polymerization reaction of a non-blocked urethane prepolymer and a phenoxy resin.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: October 12, 2010
    Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs Technologie et Services, S.A.S.
    Inventor: Shyiguei Hsu
  • Publication number: 20100162632
    Abstract: A bonded abrasive tool includes a bonded abrasive body having a bond matrix material comprising an organic bond material, abrasive grains contained within the bond matrix material, and chopped fiber bundles within the bond matrix material. The tool further has a porosity within the bonded abrasive body, wherein a majority of the porosity comprises pores surrounding the chopped fiber bundles.
    Type: Application
    Filed: December 22, 2009
    Publication date: July 1, 2010
    Applicants: SAINT-GOBAIN ABRASIVES INC., SAINT-GOBAIN ABRASIFS
    Inventors: Konstantin S. Zuyev, Walter Strandgaard, Joel A. Fife, Muthu Jeevanantham
  • Publication number: 20090242125
    Abstract: A method and apparatus for planarizing a substrate are provided. A substrate carrier head with an improved cover for holding the substrate securely is provided. The cover may have a bead that is larger than the recess into which it fits, such that the compression forms a conformal seal inside the recess. The bead may also be left uncoated to enhance adhesion of the bead to the surface of the groove. The surface of the cover may be roughened to reduce adhesion of the substrate to the cover without using a non-stick coating.
    Type: Application
    Filed: March 23, 2009
    Publication date: October 1, 2009
    Inventors: Young J. Paik, Melvin Barrentine, Abhijit Y. Desai, Hai Nguyen, Ashish Bhatnagar, Rajkumar Alagarsamy
  • Publication number: 20090191429
    Abstract: A ceramic sprayed member comprises a substrate and a ceramic sprayed coating thereon. Splats have been removed from the surface of the sprayed coating, typically by blasting. The ceramic sprayed member with improved plasma resistance mitigates particle contamination of wafers and enables stable manufacture when used in a halogen plasma process for semiconductor fabrication or the like.
    Type: Application
    Filed: January 23, 2009
    Publication date: July 30, 2009
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Takao MAEDA, Hajime NAKANO, Toshihiko TSUKATANI
  • Publication number: 20090145044
    Abstract: The disclosure is directed to an abrasive article. The abrasive article includes a backing having a major surface and a make layer. The make layer is disposed over the major surface of the backing. The make layer includes abrasive grains and a photoinitiator that increases the depth of ultraviolet cure of the make layer by at least about 50% compared to bis(2,4,6-trimethyl benzoyl) phenyl phosphine oxide. The disclosure is also directed to a method for forming the abrasive article.
    Type: Application
    Filed: December 8, 2008
    Publication date: June 11, 2009
    Applicants: SAINT-GOBAIN ABRASIVES, INC., SAINT-GOBAIN ABRASIFS
    Inventor: Xiaorong You
  • Patent number: 7497884
    Abstract: In one embodiment is provided a method of making an abrasive backing having a smooth surface comprising the steps of providing a paper having a first paper surface and a second paper surface; applying a first synthetic polymeric layer comprising a first synthetic polymeric composition to the first paper surface; and applying a second synthetic polymeric layer comprising a second synthetic polymeric composition to the first synthetic polymeric layer. The method is used to prepare fine abrasive backings having a smooth exterior surface for preparation of fine abrasive papers.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: March 3, 2009
    Assignee: Neenah Paper, Inc.
    Inventors: Gunnard Michael Lindquist, Stella May Boyak
  • Publication number: 20090053983
    Abstract: There is provided a chemical mechanical polishing pad which has a circular polishing surface and a non-polishing surface that is the back side of the polishing surface and incorporates an information recording medium that is readable or readable/writable by an electromagnetic wave in a noncontact manner and in which the position of the center of gravity of the information recording medium in the radial direction of the polishing surface is preferably within a range of 0 to 10% or 80 to 100% of the radius of the polishing surface in the direction from the center on the radius of the polishing surface toward the periphery of the polishing surface.
    Type: Application
    Filed: January 22, 2007
    Publication date: February 26, 2009
    Applicant: JSR CORPORATION
    Inventors: Yukio Hosaka, Shoei Tsuji
  • Patent number: 7241324
    Abstract: A method of producing abrasive tools with abrasive particles consisting of Al2O3 has the steps of producing a mixture of initial components with particles of Al(OH)3, forming blanks of an abrasive tool from the mixture of the initial components with the particles of AL(OH)3, subsequently producing the abrasive tools with the abrasive particles of Al2O3 by subjecting the blanks to a heat treatment such that the particles of Al(OH)3 are converted into the abrasive particles of Al2O3 in the tools, wherein the forming includes rolling a sheet from the mixture of the initial components with the particles of Al(OH)3 before the heat treatment and conversion of the particles of Al(OH)3 the abrasive particles of Al2O3 which particles of Al(OH)3 are softer than the abrasive particles of Al2O3 and therefore do not damage a rolling equipment, and thereafter separating the blanks of the abrasive tools from the sheet for the subjecting to the heat treatment.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: July 10, 2007
    Assignee: Universal Photonics LLC
    Inventors: Alex Cooper, Sergey Vladimirtsev, Yevgeny Bederak
  • Patent number: 7169199
    Abstract: A curable emulsion comprises: an oil phase comprising blocked polyisocyanate and curative; and an aqueous phase comprising at least partially neutralized crosslinked copolymer of monomers comprising at least one free-radically polymerizable carboxylic acid and at least one of an alkyl or alkaryl (meth)acrylate. In some embodiments, the curable emulsion further comprises nonionic surfactant. Methods of making the curable emulsions and their use in the manufacture of abrasive articles are also disclosed.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: January 30, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Loren L. Barber, Jr., Thomas E. Close, Yeun J. Chou
  • Patent number: 7077879
    Abstract: An object of the invention is to provide a polishing pad having the excellent slurry retaining properties and the large removal rate and a composition for a polishing pad which can form such the polishing pad. A composition for polishing pad of the invention is comprising a water-insoluble matrix material containing a crosslinked polymer and a water-soluble particle dispersed in the water-insoluble matrix material. The elongation remaining after breaking is 100% or less when a test piece comprising the water-insoluble matrix material is broken at 80° C. according to JIS K 6251. A polishing pad of the invention is that at least a part of the polishing pad comprises the composition for polishing pad.
    Type: Grant
    Filed: June 16, 2004
    Date of Patent: July 18, 2006
    Assignee: JSR Corporation
    Inventors: Toshihiro Ogawa, Kou Hasegawa, Nobuo Kawahashi
  • Publication number: 20030233792
    Abstract: Foamed thermoplastic polymeric mechanical planarization polishing pads (“MP pads”) made with supercritical fluids are presented. A supercritical fluid foaming agent is dissolved in a thermoplastic polymer. A rapid change in the solubility and volume of the supercritical fluid foaming agent in the thermoplastic polymer results in foaming of the thermoplastic polymer. Foamed thermoplastic polymeric MP pads are advantageously both significantly and uniformly porous.
    Type: Application
    Filed: June 24, 2002
    Publication date: December 25, 2003
    Inventor: Stephen J. Kramer
  • Patent number: 6645264
    Abstract: It is an object of the invention to provide a composition for forming a polishing pad comprising substances having specific functional groups exhibiting excellent hydrophilic properties and the like, a crosslinked body for polishing pad as well as a polishing pad with excellent water resisting and durability which exhibits excellent polishing performance including a high removal rate and method for producing thereof. The composition for forming a polishing pad comprises a crosslinkable elastomer having no carboxyl, amino, hydroxyl, epoxy, sulfonic acid and phosphoric acid groups, and a water-insoluble substance having at least one functional group selected from the group consisting of carboxyl, amino, hydroxyl, epoxy, sulfonic acid and phosphoric acid groups. And a water-soluble substance such as cyclodextrin may be contained. A polishing pad can be manufactured using the composition above or the crosslinked body for polishing pad, and porous polishing pads may also be obtained.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: November 11, 2003
    Assignee: JSR Corporation
    Inventors: Kou Hasegawa, Tomoo Koumura, Yutaka Kobayashi
  • Patent number: 6521005
    Abstract: Surface conditioning articles comprising an organic matrix and water-based organic binders are reported. The water-based organic binders include a first binder and a second binder with abrasive particles dispersed and adhered within the second binder. The first binder comprises a mixture of a phenolic resin and a carboxylated butadiene-acrylonitrile copolymer latex, in the range of weight ratio of dry materials of said latex versus said phenolic resin of 90/10 to 60/40.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: February 18, 2003
    Assignee: 3M Innovative Properties Company
    Inventor: Bernard Vincent
  • Patent number: 6432549
    Abstract: A curl-resistant, antislip abrasive backing which includes a polymer-reinforced paper having a first surface and a second surface; a synthetic polymeric layer bonded to the first surface; and an amorphous, rubbery polymer film layer bonded to the second surface. Also provided is a curl-resistant, antislip abrasive paper which includes a polymer-reinforced paper having a first surface and a second surface; a synthetic polymeric layer bonded to the first surface; a layer of abrasive particles bonded to the synthetic polymer layer; and an amorphous, rubbery polymer film layer bonded to the second surface. By way of examples, the amorphous, rubbery polymer may be a polyester elastomer or an amorphous, rubbery polypropylene.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: August 13, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventor: Francis Joseph Kronzer
  • Patent number: 6406504
    Abstract: A resilient abrasive article includes a resilient elongatable substrate, abrasive particles adhesively bonded to the substrate with a flexible make coat, and a hard size coat applied over the abrasive particles and flexible make coat. The size coat provides an anti-loading layer which is applied thinly enough to prevent the size coat from cracking and tearing the substrate during use.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: June 18, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Jonathan M. Lise, Chris A. Minick
  • Patent number: 6312485
    Abstract: A polymeric foam finishing pad is made by attaching an array of foam fingers to a suitable support substrate. The foam fingers are attached to the substrate in a continuous strip of interconnected fingers or may be individually inserted into a support substrate and attached to the substrate by an adhesive layer. Each of the foam members is preferably formed in and cut from an advancing foam strip and folded and inserted into a preformed opening contained in the support substrate, such that each foam member forms a pair of fingers that extend from the front face of the support substrate. The outer tip of each foam finger may include a pair of slits extending into the foam member from the outer tip to divide each outer tip into a plurality of contact tips, thereby increasing the amount of surface contact between the finishing pad and the surface being finished. The tips of the fingers may also be provided with abrasive particles to provide a more aggressive pad finishing surface.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: November 6, 2001
    Assignee: Lake Country Manufacturing, Inc.
    Inventors: Richard A. Kaiser, Scott S. McLain, Jim D. Schneider
  • Patent number: 6254468
    Abstract: In the method for the manufacture of dental tools for the treatment of surfaces, a rubber core serving as a carrier layer is first applied by injection molding onto the spindle of the tool, and the abrasive layer comprising the abrasive grains is subsequently applied to the carrier layer. In another method for the manufacture of dental tools for different treatments of surfaces, more particularly for coarse grinding, finishing, and polishing, rubber-elastic masses of different degrees of hardness are used for the abrasive parts of the tools according to the intended treatment, and abrasive grains of the same size are embedded in the rubber-elastic mass of these parts.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: July 3, 2001
    Assignee: Identoflex AG
    Inventors: Guido Gozzi, Heinrich Rupf, Beat A. Von Weissenfluh
  • Patent number: 6120569
    Abstract: A method for production of stone pattern processing mills including the steps of application of compression to resin, cellulose, and milling material in a mold module. The resin and milling material are combined to form milling granules to be bound to the cellulose substances so as to form a milling grain cellulose layer. The backside of the milling grain cellulose layer is covered with suitable flexible substances to form a hollow-set machine/grind cushion meant for coupling with a mill chassis for use. Alternatively, the backside of the machine/grind cushion may be filled with flexible or hard material so as to form a one-piece mill.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: September 19, 2000
    Inventor: Ching-An Kuo
  • Patent number: 6059850
    Abstract: A resilient abrasive article includes a resilient elongatable substrate, abrasive particles adhesively bonded to the substrate with a flexible make coat, and a hard size coat applied over the abrasive particles and flexible make coat. The size coat provides an anti-loading layer which is applied thinly enough to prevent the size coat from cracking and tearing the substrate during use.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: May 9, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Jonathan M. Lise, Chris A. Minick
  • Patent number: 6033449
    Abstract: A polishing tool for polishing optical and technical glass, semiconductors, ceramics and other materials has a high concentration of cerium dioxide or aluminum oxide particles in the quantity of 85-96% by weight, and a high molecular binder based on synthetic rubber and including a combination of high-molecular components and other components for vulcanization, plasticization and stabilization.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: March 7, 2000
    Inventors: Alex Cooper, Yakov Mikhlin, Yevgeny Bederak
  • Patent number: 6007590
    Abstract: A method for manufacturing a foraminous abrasive article whereby abrasive particles are concentrated in an external surface region of a foraminous substrate. The method includes the steps of: providing a foamable, hardenable, liquid resin composition and a foraminous substrate having an external surface; foaming the resin composition effective to disperse a plurality of gas bubbles throughout the resin composition; applying the foamed resin composition to the external surface of the substrate to form a foam coating layer having an upper surface; applying a plurality of abrasive particles to the upper surface of the foam coating layer; heating the foamed coating layer effective to eliminate the gas bubbles from the foamed coating layer; and hardening the resin composition to attach the abrasive particles to the substrate. The invention also concerns the foraminous abrasive article products of this method.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: December 28, 1999
    Assignee: 3M Innovative Properties Company
    Inventor: Rufus C. Sanders, Jr.
  • Patent number: 5928760
    Abstract: An abrasive sheet has an abrasive particle layer formed on a surface of a thin flexible resin film. The abrasive sheet is produced by the steps of preparing a releasable film, forming a thin flexible resin film layer on a release agent applied surface of the releasable film and forming an abrasive particle layer on an upper surface of the resin film layer. Thereafter, the resin film having the abrasive particle layer formed thereon is removed from the releasable film, and the resin film having the abrasive particle layer formed thereon is cut into any suitable size. The abrasive sheet can provide higher polishing power during the polishing operation, but it polishes a surface while tracing or following any orange peel on the surface. Therefore, the abrasive sheet is effective for use as the polishing tool that can replace the fine compound buffing process currently utilized in the automobile repairing industry.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: July 27, 1999
    Assignee: Kovax Corporation
    Inventors: Akira Usui, Yukio Yoshida
  • Patent number: 5902360
    Abstract: In a method for removing metal from the surface of a workpiece by continuously rubbing the surface with a tool in a friction-inducing manner and in the presence of a friction-enhancing agent (an anti-lubricant) and in which a thin layer of the friction-enhancer must be available at the tool surface, there is provided a tool which carries the friction-enhancing agent in the form of a composition of an abrasive and a rubbery solid siloxane reaction product admixed with a liquid, mobile, anti-lubricant siloxane stably dispersed therewithin, and the use of the tool to excoriate and condition the surface by removing therefrom the oxide film thereon and leaving its place a siloxane film, and a conditioned metal surface having siloxane molecules each individually bonded directly to the metal over a relatively large area of the surface to provide a relatively uniform siloxane layer.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: May 11, 1999
    Assignee: Ball Burnishing Machine Tools Limited
    Inventor: Geoffrey Robert Linzell
  • Patent number: 5711840
    Abstract: A method of making abrasive articles which includes the steps of sandwiching and adhering abrasive particles between two sheets of fiber where the particles have a major cross-section dimension greater than the thickness of the sheets into resultant second sheets. The resultant second sheets are then adhered together by lamination under pressure so that the abrasive particles of a second sheet enter the interstices between the abrasive particles of adjacent other second sheets to form an interlocking bond and increase the tensile strength. The sheets are preferably cut from a processed strip prior to lamination. Prior to lamination the second sheets may be coated with one or both of a liquid rubber and a thermosetting resin. If resin is used the stack is heated as it is pressure laminated. The application of rubber and resin may be in the alternative. The application of rubber imparts flexibility while the resin upon curing imparts hardness.
    Type: Grant
    Filed: September 2, 1994
    Date of Patent: January 27, 1998
    Assignee: Northeast Abrasives, Diamond and Tools Corp.
    Inventor: Jeffrey Steven Johnson
  • Patent number: 5674122
    Abstract: Abrasive articles and methods for their manufacture are described. The articles are screen abrasive articles including a durable backing member having a patterned array of portions thereon arranged around a plurality of openings extending through the backing with the openings comprising between about 20% and about 80% of the total area of the backing. A coating of abrasive material is adhesively affixed to the array of portions on the backing, forming abrasive surfaces arranged around the openings to cooperatively function as a single abrasive surface while the openings allow debris to pass through the article during abrasive applications. In at least one aspect of the invention, the portions of the backing include a plurality of first surface portions and a plurality of second surface portions having surface areas greater than the surface areas of the first portions.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: October 7, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: John E. Krech
  • Patent number: 5622535
    Abstract: A composition comprising an inorganic filler and binder component containing a glassy polymer and a rubbery polymer is provided. The glassy polymer contacts and encapsulates the filler. The compositions are especially useful in the fabrication of flexible magnetic recording media and abrasive articles.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: April 22, 1997
    Assignee: International Business Machines Corporation
    Inventor: Richard L. Bradshaw
  • Patent number: 5620489
    Abstract: A method for making abrasive articles uses a soft, easily deformable and flexible preform having a high binder content. The binder gives the preform its integrity, and is present in greater quantity than the retaining powder. The preform can have superabrasive particles mixed therein, or added later. The preform allows even distribution of a small quantity of retaining powder for thin superabrasive articles. A porous layer may be added to the assembly for making an abrasive article, the porous layer absorbing the liquid binder, supporting the retaining powder and superabrasive particles to prevent lateral movement, and perhaps giving strength to the preform. The final assembly to be heated or sintered (preferably under pressure) for making the abrasive article, which may include any number of layers of superabrasive particles, porous layers and preforms.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: April 15, 1997
    Assignee: Ultimate Abrasive Systems, L.L.C.
    Inventor: Naum N. Tselesin
  • Patent number: 5591239
    Abstract: An open low-density abrasive article comprising in combination:(a) a lofty, open, nonwoven three-dimensional fibrous web formed of a plurality of interentangled randomly-extending polyamide staple fibers including points of intersection and contact between the fibers, the points of intersection and contact between the fibers being bonded together to form a three-dimensionally integrated structure throughout the web, wherein the fibers comprise surfaces and a fiber tenacity of less than 5 g/denier; (b) abrasive particles dispersed throughout the web and securely adhered to the surfaces of the fibers; and (c) resinous material dispersed throughout the web comprising (i) a hard phenolic resin formed as a cured product of a phenolic resin precursor distributed throughout the web and in contact with the fibers, and (ii) a modifier component of the type and in an amount effective to substantially prevent chemical degradation of the fibers while in contact with the phenolic resin precursor.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: January 7, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Eric G. Larson, Rufus C. Sanders, Jr., Brent D. Niccum, Walter W. Pawlikowski, Elizabeth C. Edblom
  • Patent number: 5520712
    Abstract: An abrasive cleaning ball (1) is made of a mass of sponge rubber filled with abrasive grains (2) intimately mixed within the mass. The grains are constituted by short lengths of a wire made of an abrasive material that is polygonal in section, preferably square in section, and coated on its side surfaces with dried adhesive.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: May 28, 1996
    Inventor: Andre Bizard
  • Patent number: 5518794
    Abstract: A composite abrasive filament, including at least one preformed core at least partially coated with a hardened, abrasive-filled thermoplastic elastomer, exhibits increased abrading life over previously known abrasive filaments. Also disclosed are methods of making such filaments and using such filaments in article form to abrade a variety of workpieces.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: May 21, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Loren L. Barber, Jr., Dennis G. Welygan, Richard M. Pihl
  • Patent number: 5491025
    Abstract: An abrasive filament, including a thermoplastic elastomer having abrasive particles dispersed and adhered therein, exhibits improved life over previously known abrasive-filled polymeric filaments. Methods of making abrasive filaments of the invention, articles including the abrasive filaments, and methods of abrading surfaces using the abrasive articles of the invention are also described.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: February 13, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard M. Pihl, Duane J. Hayes, Loren L. Barber, Jr., Dennis G. Welygan, R. Eugene Hardwick, Ronald O. Zemke, deceased
  • Patent number: 5489233
    Abstract: An improved polishing pad is provided comprising a solid uniform polymer sheet having no intrinsic ability to absorb or transport slurry particles having during use a surface texture or pattern which has both large and small flow channels present simultaneously which permit the transport of slurry across the surface of the polishing pad, where said channels are not part of the material structure but are mechanically produced upon the pad surface. In a preferred version of the invention, the pad texture consists of a macrotexture produced prior to use and a microtexture which is produced by abrasion by a multiplicity of small abrasive points at a regular selected interval during the use of the pad.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: February 6, 1996
    Assignee: Rodel, Inc.
    Inventors: Lee M. Cook, John V. H. Roberts, Charles W. Jenkins, Raj R. Pillai
  • Patent number: 5460883
    Abstract: A composite abrasive filament, including at least one preformed core at least partially coated with a hardened, abrasive-filled thermoplastic elastomer, exhibits increased abrading life over previously known abrasive filaments. Also disclosed are methods of making such filaments and using such filaments in article form to abrade a variety of workpieces.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: October 24, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Loren L. Barber, Jr., Dennis G. Welygan, Richard M. Pihl
  • Patent number: 5443906
    Abstract: An abrasive filament, including a thermoplastic elastomer having abrasive particles dispersed and adhered therein, exhibits improved life over previously known abrasive-filled polymeric filaments. Methods of making abrasive filaments of the invention, articles including the abrasive filaments, and methods of abrading surfaces using the abrasive articles of the invention are also described.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: August 22, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard M. Pihl, Duane J. Hayes, Loren L. Barber, Jr., Dennis G. Welygan, R. Eugene Hardwick, Ronald O. Zembke, deceased
  • Patent number: 5079875
    Abstract: A grinding wheel for use in a grinding machine, wherein a plurality of grinding tips are bonded on the periphery of a wheel core having a disk-like shape using a bond which forms a bonding layer between the wheel core and the grinding tips. The grinding wheel is further provided with means for preventing coolant from entering inside of the abrasive layer and/or bonding layer, thereby preventing the bonding layer from being swelling by the coolant. In a first embodiment, the preventing means is composed of rubber layers formed on the both side surfaces of the grinding wheel at the places corresponding to the radial position of the bonding layer. In another embodiment, the preventing means is composed of water-repellant material capable of repelling water. Such material is composed of silicon or fluorine resin and is soaked into the grinding tips.
    Type: Grant
    Filed: November 23, 1990
    Date of Patent: January 14, 1992
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Kunihiko Unno, Tomoyasu Imai, Hajime Fukami, Akimitsu Kamiya, Shinji Soma
  • Patent number: 5038500
    Abstract: A gritted outsole suitable for intervulcanization with a rubber boot has a layer of inorganic grit particles secured to its outer face. The grit particles are chemically bonded to the rubber of the outsole by an adhesive having both polar and non-polar components. The adhesive may comprise a pair of successive primer coatings on the grit particles. The first primer coating is made of a polar organic polymer which has a high affinity for the grit particle. The second primer overcoats the first primer and serves to intervulcanize the first primer with the rubber of the outsole. An intervulcanized gritted outsole according to the invention provides improved traction and has greater durability than conventional gritted outsoles.
    Type: Grant
    Filed: November 8, 1988
    Date of Patent: August 13, 1991
    Assignee: LaCrosse Footwear, Inc.
    Inventor: Jon E. Nicholson
  • Patent number: 4475926
    Abstract: A resinoid bonded abrasive article in which the resinoid bond includes 5-80% by volume of an improved active filler or grinding aid. The active filler is a mixture of iron pyrites, potassium sulfate and an alkali haloferrate; the alkali haloferrate having the formula A.sub.x Fe.sub.y ++ Fe.sub.z +++ H.sub.x+2y+3z where A is an alkali metal, H is a halogen, x is a number from 1 to 10, y is a number from 0 to 1, z is a number from 0 to 1, and y and z are not zero at the same time. The fillers are present in the bond in a ratio of alkali-haloferrate-to-pyrites-to-potassium sulfate of 0.5:1:0.5.
    Type: Grant
    Filed: September 2, 1983
    Date of Patent: October 9, 1984
    Assignee: Norton Company
    Inventor: Gordon E. Hickory
  • Patent number: 4335033
    Abstract: An eraser based on polyvinyl chloride having particles of a crosslinked polymeric natural or synthetic rubber embedded in the polyvinyl chloride structure. Such erasers have high strength and good aging resistance. Additionally, conventional softeners in the eraser do not undergo significant migration and consequently, the eraser does not smudge. A process for manufacturing the eraser is also disclosed.
    Type: Grant
    Filed: August 16, 1979
    Date of Patent: June 15, 1982
    Assignee: J. S. Staedtler
    Inventor: Werner Handl
  • Patent number: 4280935
    Abstract: A friction material of the present invention is directed to secure a required value of an initial effect and the following effects after a friction hysteresis during a brake operation by adding 20-60 wt. % of a high carbon iron powder instead of a ceramic powder in the conventional friction material and also succeed in improving a wear resistance at a high temperature by further adding 0.5-10.5 wt. % of antimony trioxide as a flame retarding material.
    Type: Grant
    Filed: August 31, 1979
    Date of Patent: July 28, 1981
    Assignee: Akebono Brake Industry Company, Ltd.
    Inventor: Osao Ogiwara