Integrated Strands Patents (Class 451/536)
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Patent number: 10549403Abstract: A method of manufacturing a flexible grinding product comprises the steps: a) preparing an open cloth of knitted or woven fabric; b) applying a coating to one surface of the cloth, wherein the coated surface of the cloth has one or more flat portions; c) applying a grinding agent to the coated surface of the cloth. Further, a flexible grinding product has an open cloth, wherein a surface of the cloth is provided with a coating such that the coated surface has one or more flat areas which are at least partially provided with a grinding agent.Type: GrantFiled: September 5, 2012Date of Patent: February 4, 2020Assignee: KWH Mirka ABInventors: Goran Hoglund, Hans Hede, Nicolas Schumacher, Mats Sundell, Jan Gron
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Patent number: 9950408Abstract: Disclosed is an exemplary abrasive pad having a plurality of first elongated members and a plurality of second elongated members arranged crosswise relative to the first elongated members to form a mat having a first side and an opposite second side. The second elongated members alternately pass over and under the first members in a serpentine manner, and include a longitudinal concave region and a longitudinal convex region. The abrasive pad includes an abrasive material affixed to the convex region of at least one of the plurality of second elongated members, wherein the concave region of the second elongated members are devoid of abrasive material.Type: GrantFiled: November 2, 2010Date of Patent: April 24, 2018Assignee: Diamabrush LLCInventors: Simon Palushaj, Jerry Duda
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Patent number: 9839337Abstract: An abrasive or cleaning pad includes a composite resin as a wear layer. A cleaning pad system for motorized floor cleaning or polishing applications includes a pad having a combination of two grades of melamine resin-based foam. A method of cleaning a floor surface is also provided.Type: GrantFiled: May 31, 2012Date of Patent: December 12, 2017Assignee: Charlott Produkte Dr. Rauwald GmbHInventor: Wolfgang Rauwald
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Patent number: 9616550Abstract: A grinding tool includes a rigid support body and a carrier substrate. The carrier substrate is attached to the support body, and is supported by the support body. Two opposing surfaces of the carrier substrate respectively define a working surface and a non-working surface. A plurality of first abrasive particles are affixed on the working surface, and a plurality of second abrasive particles are affixed on the non-working surface. The first abrasive particles have a first average size, and the second abrasive particles have a second average size smaller than the first average size. The carrier substrate is attached to the support body at the non-working surface. Moreover, a method of manufacturing the grinding tool is described herein.Type: GrantFiled: October 20, 2015Date of Patent: April 11, 2017Assignee: Kinik CompanyInventors: Jui-Lin Chou, I-Tsao Liao, Chia-Feng Chiu
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Patent number: 9193039Abstract: The disclosure relates to an anti-clogging mesh abrasive cloth, which is one type of coated abrasive tool. The anti-clogging mesh abrasive cloth comprises a substrate, a prime adhesive coating layer painted on the substrate, an abrasive layer planted on the prime adhesive coating layer, and a deposited adhesive coating layer covering on top of the abrasive layer. The substrate of the anti-clogging mesh abrasive cloth is mesh cloth with a plurality of uniformly distributed large meshes and small meshes. The large meshes can facilitate discharge of chips generated during grinding. The small meshes allow the plane around the large meshes to be anti-clogging. The combination of the large meshes and the small meshes makes the anti-clogging mesh abrasive cloth anti-clogging and suitable for grinding the materials apt to causing blockage while being grinded, such as wood, paint and putty.Type: GrantFiled: April 1, 2014Date of Patent: November 24, 2015Assignee: Zibo Riken MT Coated Abrasives Co.Inventors: Jianchang Zhai, Xia Meng, Huanming Xu
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Publication number: 20140378037Abstract: The invention is a new Velcro-backed abrasive cloth. It is used in the coated abrasives industry. Its uniqueness is in the construction. It is formed by a cloth with Velcro on one side (1), after the cloth is dipped in resin, the side with no Velcro is coated with a layer of primer (2), and an abrasive layer (3) is then planted on top of the primer. On top of the abrasive layer, a multi-layer adhesive (4) is then planted. There is an anti clogging coating, an anti static coating or a combination of both on the multi-layer adhesive. This new Velcro backed abrasive cloth utilizes a napped fabric as the base material. The abrasives are directly planted onto the resin treated base material thus reducing the manufacturing steps and lowering costs. The unique construction of the base material extends the product lifetime and increases the sanding efficiency.Type: ApplicationFiled: November 15, 2013Publication date: December 25, 2014Applicant: Zibo Riken MT Coated Abrasives Co., LTDInventors: Gang Yao, Xiangli Ma, Xia Meng
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Patent number: 8888561Abstract: A nonwoven abrasive wheel comprising one or more layers of a nonwoven fiber web, a plurality of super abrasive particles having a Vickers hardness greater than 40 GPa, a polyurethane binder adhering the plurality of super abrasive particles to the nonwoven fibers and adhering the layers of the nonwoven fiber web to each other, and wherein the nonwoven abrasive wheel comprises a Flexural Modulus from 4.0 to 128.0 lb/inch of thickness per inch of displacement.Type: GrantFiled: June 27, 2011Date of Patent: November 18, 2014Assignee: 3M Innovative Properties CompanyInventors: James L. McArdle, Alice B. Moris, Ann M. Hawkins, Carl P. Erickson
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Publication number: 20140302760Abstract: The disclosure relates to an anti-clogging mesh abrasive cloth, which is one type of coated abrasive tool. The anti-clogging mesh abrasive cloth comprises a substrate, a prime adhesive coating layer painted on the substrate, an abrasive layer planted on the prime adhesive coating layer, and a deposited adhesive coating layer covering on top of the abrasive layer. The substrate of the anti-clogging mesh abrasive cloth is mesh cloth with a plurality of uniformly distributed large meshes and small meshes. The large meshes can facilitate discharge of chips generated during grinding. The small meshes allow the plane around the large meshes to be anti-clogging. The combination of the large meshes and the small meshes makes the anti-clogging mesh abrasive cloth anti-clogging and suitable for grinding the materials apt to causing blockage while being grinded, such as wood, paint and putty.Type: ApplicationFiled: April 1, 2014Publication date: October 9, 2014Applicant: Zibo Riken MT Coated Abrasives Co.Inventors: Jianchang Zhai, Xia Meng, Huanming Xu
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Patent number: 8808065Abstract: A surface treating device includes an open lofty non-woven layer (1) and a woven layer (2). The non-woven layer and woven layer have facing sides (5, 6) which are adhered to each other. A plurality of abrasive segments (3) is adhered to the woven layer on the side (7) of the woven layer (2) which faces away from the non-woven layer (1). Thus, the abrasive segments are held in a stable manner so as to better withstand the frictional forces exerted thereon during service.Type: GrantFiled: June 21, 2012Date of Patent: August 19, 2014Assignee: Design Technologies LLCInventor: James Weder
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Patent number: 8734205Abstract: A macro-porous abrasive article includes a spun lace substrate having a macro-porous structure and a coating. The coating is made of a resin binder and abrasive aggregates. The abrasive aggregates are formed from a composition of abrasive grit particles and a nanoparticle binder. The coating is at least partially embedded in the substrate. A method for making the macro-porous abrasive article includes combining abrasive aggregates of abrasive grit particles and a nanoparticle binder with a resin binder to form a slurry. The slurry is applied to a macro-porous support structure so that the slurry at least partially penetrates the substrate. The resin is then cured to bond the aggregate grains to the substrate.Type: GrantFiled: December 14, 2009Date of Patent: May 27, 2014Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Paul S. Goldsmith, Anthony C. Gaeta, James J. Manning, Kamran Khatami
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Patent number: 8579677Abstract: An abrasive brush includes a securing element and a plurality of abrasive filaments secured to the securing element to form a brush. Each abrasive filament includes a matrix of thermoplastic polymer and a plurality of alumina abrasive particles interspersed throughout at least a portion of the matrix. The abrasive particles comprising a polycrystalline alpha alumina having a fine crystalline microstructure characterized by an alpha alumina average domain size not greater than 500 nm. The alumina abrasive particles further include a pinning agent comprising a dispersed phase in the polycrystalline alpha alumina.Type: GrantFiled: September 15, 2011Date of Patent: November 12, 2013Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventor: Trinity J. Boudreau
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Patent number: 8491360Abstract: The present disclosure is directed at a chemical-mechanical planarization polishing pad comprising interconnecting elements and a polymer filler material, wherein the interconnecting elements include interconnecting junction points that are present at a density of 1 interconnecting junction point/cm3 to 1000 interconnecting junction points/cm3, and wherein the interconnecting elements have a length between interconnection junction points of 0.1 microns to 20 cm.Type: GrantFiled: October 23, 2008Date of Patent: July 23, 2013Assignee: Innopad, Inc.Inventors: Paul Lefevre, Oscar K. Hsu, David Adam Wells, Marc C. Jin, John Erik Aldeborgh
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Patent number: 8435099Abstract: An aspect of the present disclosure relates to a chemical mechanical planarization pad including a first domain and a second continuous domain wherein the first domain includes discrete elements regularly spaced within the second continuous domain. The pad may be formed by forming a plurality of openings for a first domain within a second continuous domain of the pad, wherein the openings are regularly spaced within the second domain, and forming the first domain within the plurality of openings in second continuous domain. In addition, the pad may be used in polishing a substrate with a polishing slurry.Type: GrantFiled: January 27, 2010Date of Patent: May 7, 2013Assignee: Innopad, Inc.Inventors: Paul Lefevre, Anoop Mathew, Guangwei Wu, David Adam Wells, Oscar K. Hsu, Xuechan Zhao
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Patent number: 8215051Abstract: A pest control material (11), such as mosquito netting, has a surface (12) with abrasive/absorptive microprojections (13). Insect pests such as mosquitoes suffer damage to their cuticle, resulting in dehydration and/or invasion by microbial pathogens. The material is made by coating a fabric with abrasive and/or absorptive materials.Type: GrantFiled: June 14, 2007Date of Patent: July 10, 2012Assignee: Insectshield LimitedInventors: Bruce Alexander, Stephen John Russell
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Publication number: 20110034115Abstract: An abrasive mesh for a powered grinding wheel is made by weaving plural twisted warp threads with plural single weft threads. The twisted warp threads construct an even machining surface for grinding the workpiece evenly, avoiding the occurrence of surface scratch. Since the twisted warp threads are connected to the single weft threads by weaving, the structure strength of the abrasive mesh is relatively high, thus extending its service life. Further, the abrasive mesh can be applied to grind the workpiece requiring high grinding fineness.Type: ApplicationFiled: August 10, 2009Publication date: February 10, 2011Inventors: Ching-Chi CHAO, Yi-Shen LAI
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Patent number: 7828634Abstract: The polishing pad (104) is useful for polishing at least one of magnetic, optical and semiconductor substrates (112) in the presence of a polishing medium (120). The polishing pad (104) includes a plurality of polishing elements (402, 502, 602, 702). The polishing elements (402, 502, 602, 702) are aligned in a vertical direction and having a first and a second end. A plurality of junctions (404, 510, 610, 710) connects the first and second ends of the polishing elements (402, 502, 602, 702) with at least three polishing elements at each of the plurality of junctions (404, 510, 610, 710) for forming a tier. Each tier representing a thickness in the vertical direction between the first and second ends of the polishing elements (402, 502, 602, 702). And an interconnected lattice structure (400, 600) forms from connecting sequential tiers of the plurality of junctions (404, 504) that connect the polishing elements (402, 502, 602, 702).Type: GrantFiled: August 16, 2007Date of Patent: November 9, 2010Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventors: Bo Jiang, Gregory P. Muldowney
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Patent number: 7815491Abstract: The present invention mainly relates to a polishing pad comprising a base material comprising fibers; a membrane with low permeability; a two-component paste formed on the upper surface of the membrane with low permeability for adhering the base material to the membrane with low permeability; and a polyurethane paste formed on the lower surface of the membrane with low permeability. A method of polishing a substrate comprising using the polishing pad and a method for manufacturing the polishing pad as described above are also provided. The polishing pad as mentioned above prevents the polishing pad from detaching from the polishing platen or head. The polishing pad is easy to be replaced without leaving residues on the polishing platen or head.Type: GrantFiled: May 29, 2007Date of Patent: October 19, 2010Assignee: San Feng Chemical Industry Co., Ltd.Inventors: Chung-Chih Feng, I-Peng Yao, Lyang-Gung Wang, Yung-Chang Hung
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Patent number: 7635291Abstract: Chemical mechanical polishing pads are provided, wherein the chemical mechanical polishing pads have a polishing layer comprising an interpenetrating network including a continuous non-fugitive phase and a substantially co-continuous fugitive phase. Also provided are methods of making the chemical mechanical polishing pads and for using them to polish substrates.Type: GrantFiled: July 16, 2009Date of Patent: December 22, 2009Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventor: Gregory P Muldowney
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Patent number: 7628829Abstract: An abrasive article comprises a porous abrasive member, a nonwoven filter medium, and a porous attachment fabric. A plurality of openings in the porous abrasive member cooperates with the nonwoven filter medium to allow the flow of particles from an outer abrasive surface of the porous abrasive member to the porous attachment fabric. Methods of making and using the abrasive articles are included.Type: GrantFiled: March 20, 2007Date of Patent: December 8, 2009Assignee: 3M Innovative Properties CompanyInventors: Edward J. Woo, Thomas W. Rambosek, Seyed A. Angadjivand, Mary B. Donovan, Rufus C. Sanders, Jr., Yeun-Jong Chou
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Patent number: 7517277Abstract: The polishing pad (104) is useful for polishing at least one of a magnetic, optical and semiconductor substrate (112) in the presence of a polishing medium (120). The polishing pad 104 includes multiple layers of polishing filaments (200, 300, 400, 500) stacked on a base layer (204, 404, 504) of polishing filaments, the multiple layers of polishing filaments (200, 300, 400, 500) having a sequential stacked formation with each layer of the polishing filaments being above and attached to a lower polishing filament, the multiple layers of polishing filaments (200, 300, 400, 500) being parallel to a polishing surface of the polishing pad (104) and wherein individual polishing filaments (202, 302, 402) of the multiple layers of polishing filaments (200, 300, 400, 500) are above an average of at least three polishing filaments (202, 302, 402), to form the polishing pad having an open lattice structure of interconnected polishing filaments (210, 310, 410, 510, 610).Type: GrantFiled: August 16, 2007Date of Patent: April 14, 2009Assignee: Rohm and Haas Electronic Materials CMP Holdings, Inc.Inventor: Gregory P. Muldowney
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Patent number: 7452265Abstract: An abrasive article with an integral dust collection system. The abrasive article comprises a porous abrasive layer with openings, a first filter media with channels, a second filter media, a third filter media with channels, a fourth filter media, and an optional attachment layer. The openings of the porous abrasive layer cooperate with the channels to allow the flow of particles from the abrasive surface to the filter media.Type: GrantFiled: December 21, 2006Date of Patent: November 18, 2008Assignee: 3M Innovative Properties CompanyInventors: Thomas W. Rambosek, Edward J. Woo, Curtis J. Schmidt
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Publication number: 20080200102Abstract: The present invention mainly relates to a polishing pad comprising a base material comprising fibers; a membrane with low permeability; and a buffer layer formed between the base material and an upper surface of the membrane with low permeability and embedded into the fibers of the base material. A method of polishing a substrate comprising using the polishing pad and a method for manufacturing the polishing pad as described above are also provided.Type: ApplicationFiled: February 15, 2007Publication date: August 21, 2008Applicant: San Fang Chemical Industry Co., Ltd.Inventors: Chung-Chih Feng, I-Peng Yao, Lyang-Gung Wang, Yung-Chang Hung
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Patent number: 7357698Abstract: A polishing pad for chemically mechanically polishing a semiconductor wafer comprises a first groove pattern circularly formed on the surface of the polishing pad, and a second groove pattern formed on the surface of the polishing pad while spirally extending from the circular center of the polishing pad to the outside so as to overlap the first groove pattern. The polishing pad further comprises a third groove pattern formed on the surface of the polishing pad while radially extending from the circular center of the polishing pad to the outside so as to overlap the first and second groove patterns. A chemical mechanical polishing apparatus comprises the polishing pad. The polishing pad of the chemical mechanical polishing apparatus has enhanced groove patterns formed on the polishing pad to provide uniform distribution of the slurry, thereby enhancing polishing speed and polishing uniformity.Type: GrantFiled: November 29, 2005Date of Patent: April 15, 2008Assignee: Hynix Semiconductor Inc.Inventor: Yong Soo Choi
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Patent number: 7285146Abstract: A resilient hand-held abrasive article includes a flexible conformable backing layer having opposed first and second major surfaces, a flexible reinforcing layer affixed to at least one of the backing layer first and second major surfaces, and abrasive particles arranged on the reinforcing layer, thereby defining an abrasive surface. The backing layer comprises a multiplicity of separated resilient bodies connected to each other in a generally planar array in a pattern that provides open spaces between adjacent connected bodies.Type: GrantFiled: December 28, 2005Date of Patent: October 23, 2007Assignee: 3M Innovative Properties CompanyInventor: John G. Petersen
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Patent number: 7267608Abstract: A conditioner including abrasive elements for conditioning a polishing pad to be used in abrasive semiconductor substrate treatment processes, such as chemical-mechanical polishing or chemical-mechanical planarization processes. The abrasive elements are formed from a material that may be degraded or dissolved by at least one chemical that will not substantially degrade or dissolve a material of the polishing pad. The abrasive elements of the conditioner may be degraded or dissolved in at least one chemical that will not substantially degrade or dissolve a material of the polishing pad. Any residue or particles of, or from, the abrasive elements that stick to or become embedded in the polishing pad are removed therefrom by exposing the polishing pad to the at least one chemical so as to degrade or dissolve the residue or particles without substantially degrading or dissolving a material of the polishing pad.Type: GrantFiled: December 5, 2003Date of Patent: September 11, 2007Assignee: Micron Technology, Inc.Inventor: Stephen J. Kramer
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Patent number: 7258705Abstract: A porous abrasive article that allows air and dust particles to pass through. The abrasive article has a screen abrasive and a polymer netting with hooks. The screen abrasive has an abrasive layer comprising a plurality of abrasive particles and at least one binder. The polymer netting cooperates with the screen abrasive to allow the flow of particles through the abrasive article.Type: GrantFiled: August 5, 2005Date of Patent: August 21, 2007Assignee: 3M Innovative Properties CompanyInventors: Edward J. Woo, Charles R. Wald, Curtis J. Schmidt
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Patent number: 7252694Abstract: A porous abrasive article that allows air and dust particles to pass through. The abrasive article has a screen abrasive and an apertured attachment interface with hooks. The screen abrasive has an abrasive layer comprising a plurality of abrasive particles and at least one binder. The apertured attachment interface cooperates with the screen abrasive to allow the flow of particles through the abrasive article.Type: GrantFiled: August 5, 2005Date of Patent: August 7, 2007Assignee: 3M Innovative Properties CompanyInventors: Edward J. Woo, Charles R. Wald, Curtis J. Schmidt
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Patent number: 7235114Abstract: A resilient flexible abrasive article includes a continuous backing layer including a support layer coated with foam, the continuous backing layer having opposed major surfaces, at least one of the major surfaces including a three dimensional surface topography including raised and recessed regions, and wherein the raised and recess regions are at least partially coated with abrasive particles, thereby defining an abrasive surface.Type: GrantFiled: March 16, 2006Date of Patent: June 26, 2007Assignee: 3M Innovative Properties CompanyInventors: Chris A. Minick, Ian R. Owen
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Patent number: 7160183Abstract: A buff is made from a non-woven fabric where the fibers are first carded and formed into a fairly thick fleece. The fleece is passed over a topographical surface on, for example, a moving belt or a drum. The fleece is subject to a bow-tie hydroentanglement process where many fine jets of water entangle the fibers on the topographical surface. Excess water is vacuumed from the system. The fabric is dried and chemically treated. With the fabric a variety of buffing tools are made, in wheel, belt or roll form. Tests against standard and mill treatment buffs show a remarkably lower fabric weight loss percentage and lower or normal operating temperatures. The fabric has exceptional mechanical strength having a tensile strength in excess of 650 N/50 mm according to DIN 29073/3. Preferably the fabric has a tensile strength of at least 1,000 N/50 mm in the machine direction and in excess of 900 N/50 mm in the cross direction according to such DIN.Type: GrantFiled: May 8, 2003Date of Patent: January 9, 2007Assignee: Jason IncorporatedInventor: Robert J. Weber
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Patent number: 6971950Abstract: An endless belt for a belt type polishing machine comprises a support fabric and a polymer layer of relatively low hardness. The polymer layer is formed with drainage grooves. The support fabric may comprise a non woven or woven material, or a membrane with oriented reinforcing yarns. A further version comprises a spiral-link fabric supporting a woven or non woven layer carrying the polymer layer. The polymer layer may be a double layer, the upper of which is either harder or softer than the lower layer.Type: GrantFiled: October 22, 2003Date of Patent: December 6, 2005Assignee: Praxair Technology, Inc.Inventor: Walter Dudovicz
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Patent number: 6840842Abstract: An objective of the present invention is to provide a burnishing pad, capable of removing dirt by burnishing a place (i.e., a dirty point) onto which dirt attaches to impart sufficient luster, and being biodegraded; a burnishing machine equipped with the burnishing pad; and a burnishing method using the burnishing pad. The burnishing pad of the invention is comprised of a lock-like fiber composite in which adjacent fibers are bonded at intersection thereof, wherein said fiber is at least one selected from the group consisting of a vegetable fiber and an animal fiber. And another burnishing pad is a fiber composite comprised of thick fibers of 150 ?m or more in fiber diameter. These pads can be equipped with a porous supporting layer, respectively. The porous supporting layer has a mean 5% modulus strength of 20 N/5 cm width or more at 70° C. and a unit area weight of 100 g/m2 or less.Type: GrantFiled: December 12, 2002Date of Patent: January 11, 2005Assignees: Toyo Cushion Co., Ltd., Japan Vilene Company, Ltd.Inventors: Miyoko Hirai, Yukio Suzuki, Kazuo Irobe, Takanobu Haruki, Yoshihiro Suzuki, Naohiko Shimono, Hiroki Kanamaru
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Patent number: 6786812Abstract: A supporting disk for a surface grinding wheel comprises a glass-fiber reinforced phenolic resin body which has an upper covering layer of a textile glass fabric or a glass-yarn layer, an intermediate layer of a fiber mat, and a lower covering layer of a textile glass fabric or a glass-yarn layer.Type: GrantFiled: February 12, 2002Date of Patent: September 7, 2004Assignees: August Rüggeberg GmbH & Co., P-D Glasseiden GmbH OschatzInventors: Bernd Stuckenholz, Bernd Trompelt, Bernd Preissler, Gisela Gross
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Patent number: 6736714Abstract: An endless belt for a belt type polishing machine comprises a support fabric and a polymer layer of relatively low hardness. The polymer layer is formed with drainage grooves. The support fabric may comprise a non woven or woven material, or a membrane with oriented reinforcing yarns. A further version comprises a spiral-link fabric supporting a woven or non woven layer carrying the polymer layer. The polymer layer may be a double layer, the upper of which is either harder or softer than the lower layer.Type: GrantFiled: September 30, 1997Date of Patent: May 18, 2004Assignee: Praxair S.T. Technology, Inc.Inventor: Walter Dudovicz
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Patent number: 6726555Abstract: The invention pertains to a fiber-reinforced rotationally symmetrical tool carrier, a corresponding manufacturing method and a grinding tool. The tool carrier can be separably connected to a rotary drive and contains a tool receptacle surface for receiving a grinding, rough-grinding and/or polishing element. The tool carrier and the grinding tool contain a fiber reinforcement that consists at least partially of natural fibers.Type: GrantFiled: December 27, 2001Date of Patent: April 27, 2004Assignee: Gerd Eisenblaetter GmbHInventor: Gerd Eisënblaetter
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Patent number: 6712681Abstract: A polishing pad having a body comprising fibers embedded in a matrix polymer formed by a reaction of polymer precursors. The fibers define interstices, and the precursors fill these interstices substantially completely before completion of the reaction. The pad may include a thin layer of free fibers at its polishing surface. A segment of at least a portion of the free fibers are embedded in the adjacent body of the polymer and fibers. The fibers may be separate, or in the form of a woven or non-woven web.Type: GrantFiled: November 20, 2000Date of Patent: March 30, 2004Assignee: International Business Machines CorporationInventors: Shyng-Tsong Chen, Kenneth P. Rodbell, Oscar Kai Chi Hsu, Jean Vangsness, David S. Gilbride, Scott Clayton Billings, Kenneth Davis
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Patent number: 6699104Abstract: A polishing pad includes a polishing layer and an adhesive layer. An adhesive bottom surface of the adhesive layer has an air transmitting pathway to collect air that is expelled from under the adhesive bottom surface, which avoids entrapment of air under the adhesive bottom surface.Type: GrantFiled: September 13, 2000Date of Patent: March 2, 2004Assignee: Rodel Holdings, Inc.Inventors: Arthur Richard Baker, III, Steven Fetheroff
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Patent number: 6672952Abstract: A tearable abrasive article is provided which includes a backing comprising a polymer film having a scrim partially embedded therein and an abrasive coating comprising a plurality of abrasive articles and a binder bonded to at least one side of the backing.Type: GrantFiled: December 23, 1998Date of Patent: January 6, 2004Assignee: 3M Innovative Properties CompanyInventors: Craig A. Masmar, Jeffrey S. Peterson, Michael L. Teetzel
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Patent number: 6638151Abstract: The present invention relates to a polishing instrument for polishing a surface into a predetermined configuration. The present invention aims to provide a polishing instrument superior in operability and stability and capable of polishing a surface into a desired configuration. The polishing instrument of the present invention includes: a rotatable rotary substrate portion equipped with a polishing plane holding a polishing material on its surface; a plurality of movable substrate portions equipped with polishing planes which hold the polishing material on their surfaces, which are provided in the peripheral edge of the rotary substrate portion, and which rotate about a connection line connecting them to the rotary substrate portion; and elastic members for biasing the polishing planes of the movable substrate portions toward a position where they are flush with the polishing plane of the rotary substrate portion.Type: GrantFiled: October 9, 2001Date of Patent: October 28, 2003Inventor: Makoto Ueno
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Publication number: 20030148722Abstract: Foam for making pads and belts with controlled, reproducible microcellular structure and method of making such foam in a fast and efficient manner. Under constant pressure and temperature, a prepolymer is mixed with the nucleation surfactant in a tank in the presence of a frothing agent metered into the tank by way of a dip tube or sparge. The nitrogen gas is sheared into small bubbles and is drawn off from the headspace of the tank creating a continuous flow of nitrogen. The pressure of the tank may vary from any absolute pressure down to near complete vacuum, thereby all but eliminating the pressure requirement. The froth of the present invention has a more consistent cell structure and increased cell count.Type: ApplicationFiled: October 7, 2002Publication date: August 7, 2003Inventors: Brian Lombardo, Jeffrey P. Otto
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Patent number: 6595843Abstract: A buff is made from a non-woven fabric where the fibers are first carded and formed into a fairly thick fleece. The fleece is passed over a topographical surface on, for example, a moving belt or a drum. The fleece is subject to a bow-tie hydroentanglement process where many fine jets of water entangle the fibers on the topographical surface. Excess water is vacuumed from the system. The fabric is dried and chemically treated. With the fabric a variety of buffing tools are made, in wheel, belt or roll form. Tests against standard and mill treatment buffs show a remarkably lower fabric weight loss percentage and lower or normal operating temperatures. The fabric has exceptional mechanical strength having a tensile strength in excess of 650 N/50 mm according to DIN 29073/3. Preferably the fabric has a tensile strength of at least 1,000 N/50 mm in the machine direction and in excess of 900 N/50 mm in the cross direction according to such DIN.Type: GrantFiled: October 31, 2000Date of Patent: July 22, 2003Assignee: Jason IncorporatedInventor: Robert J. Weber
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Patent number: 6589106Abstract: A polishing element for mineral or organic optical glass, adapted to be mounted on a rotatable support, of a shape suitable for that of the glass to be polished, includes a base constituted by a polymeric film, of a woven or non-woven fabric, having, at its surface, a flocking of fibers of viscose and or polyamide fixed on the base by glue, the fibers having a length between 0.3 mm and 1.0 mm.Type: GrantFiled: June 1, 2000Date of Patent: July 8, 2003Assignee: Etablissements D Curt, Societe AnonymeInventor: Alain Balmelle
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Patent number: 6406577Abstract: A coated abrasive backing consisting of an endless, seamless, loop is provided. The backing loop includes about 40-99% by weight of an organic polymeric binder, based upon the weight of the backing; and an effective amount of a fibrous reinforcing material engulfed within the organic polymeric binder material. The endless, seamless backing loop includes a length with parallel side edges, and at least one layer of fibrous reinforcing material engulfed within the organic polymeric binder material such that there are regions of organic binder material free of fibrous reinforcing material on opposite surfaces of the layer of fibrous reinforcing material. The fibrous reinforcing material can be in the form of individual fibrous strands, a fibrous mat structure, or a combination of the these. A method for preparing the endless, seamless backing loop for a coated abrasive belt is also provided.Type: GrantFiled: October 17, 1996Date of Patent: June 18, 2002Assignee: 3M Innovative Properties CompanyInventors: Harold Wayne Benedict, Diana Denise Zimny, Donna Wendeln Bange
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Patent number: 6406576Abstract: A coated abrasive backing consisting of an endless, seamless, loop is provided. The backing loop includes about 40-99% by weight of an organic polymeric binder, based upon the weight of the backing; and an effective amount of a fibrous reinforcing material engulfed within the organic polymeric binder material. The endless, seamless backing loop includes a length with parallel side edges, and at least one layer of fibrous reinforcing material engulfed within the organic polymeric binder material such that there are regions of organic binder material free of fibrous reinforcing material on opposite surfaces of the layer of fibrous reinforcing material. The fibrous reinforcing material can be in the form of individual fibrous strands, a fibrous mat structure, or a combination of the these. A method for preparing the endless, seamless backing loop for a coated abrasive belt is also provided.Type: GrantFiled: October 17, 1996Date of Patent: June 18, 2002Assignee: 3M Innovative Properties CompanyInventors: Harold Wayne Benedict, Diana Denise Zimny, Donna Wendeln Bange
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Patent number: 6402604Abstract: The invention provides individually made abrasive discs with the primary abrasive surface around the periphery of the disc where the bulk of the abrading action occurs when the disc is in use. The invention also provides a process by which these discs can be made using a unique grain feeding technique which is capable of depositing abrasive grain on a backing surface accurately and in annular patterns.Type: GrantFiled: December 15, 2000Date of Patent: June 11, 2002Assignee: Saint-Gobain Abrasive Technology CompanyInventor: Olivier Léon-Marie Fernand Guiselin
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Patent number: 6302930Abstract: The present invention provides an improved nonwoven abrasive product. The improved abrasive product has a porous, lofty web of multiple layers of coiled, autogenously bonded thermoplastic filaments, binder resin, abrasive granules and size resin. When porous, lofty web, before adding binder resin, abrasive granules or size resin, has a coil weight in the range of 17 to 28 g/24 in2 (1.097 to 1.808 kg/m2) and is variegated, and the coated porous lofty web exhibits a relatively high measured load/deflection value then the useful life of the abrasive product is greatly increased compared to abrasive products made from webs having lower coil weights and no variegation.Type: GrantFiled: January 10, 2000Date of Patent: October 16, 2001Assignee: 3M Innovative Properties CompanyInventor: Ronald E. Lux
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Patent number: 6299520Abstract: A nonabsorbent, abrasive scrubbing pad, especially for domestic use in the kitchen or bathroom, comprising a nonwoven web of fibers in which the fibers have coated thereon a mixture of antimicrobial compounds. The antimicrobial compounds are dispersed in a coating material that is applied to the fibers and then cured to anchor the antimicrobial compounds in the coating and prevent their being leached. The coating preferably also has dispersed therein abrasive particles to provide an abrasive scrubbing pad.Type: GrantFiled: October 7, 1999Date of Patent: October 9, 2001Assignee: ACS Industries, Inc.Inventor: Robert H. Cheyne, III
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Patent number: 6257973Abstract: The invention provides individually made abrasive discs with the primary abrasive surface around the periphery of the disc where the bulk of the abrading action occurs when the disc is in use. The invention also provides a process by which these discs can be made using a unique grain feeding technique which is capable of depositing abrasive grain on a backing surface accurately and in annular patterns.Type: GrantFiled: November 4, 1999Date of Patent: July 10, 2001Assignee: Norton CompanyInventor: Olivier Léon-Marie Fernand Guiselin
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Patent number: 6231427Abstract: A wafer polisher and method for the chemical mechanical planarization of semiconductor wafers. The polisher includes a wafer holder for supporting the semiconductor wafer and a linear polishing assembly having a polishing member positioned to engage the surface of the wafer. The polishing member is movable in a linear direction relative to the wafer surface to uniformly polish the surface of the wafer. A pivotal alignment device may be used to pivotally support one of the wafer holder and the polishing member relative to the other of the wafer holder and the polishing member with the surface of the wafer and the polishing member retained in parallel alignment during operation of the polisher. The polisher optionally includes a conditioning station for conditioning the polishing member.Type: GrantFiled: May 8, 1997Date of Patent: May 15, 2001Assignee: Lam Research CorporationInventors: Homayoun Talieh, David Edwin Weldon
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Patent number: 6217432Abstract: An abrasive article is formed having a barrier coating coextensive with and interposed between a backing and an abrasive coating. The hardened barrier coating essentially eliminates penetration of the abrasive coating into the backing, especially volatile materials. The barrier coating comprising as starting materials a water-borne resin that upon hardening forms a crystalline or semi-crystalline polymer, a major polyfunctional crosslinking agent, and at least one minor polyfunctional crosslinking agent. The minor polyfunctional crosslinking agent enhances the attachment of the abrasive coating to the barrier coating.Type: GrantFiled: May 19, 1998Date of Patent: April 17, 2001Assignee: 3M Innovative Properties CompanyInventor: Edward J. Woo
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Patent number: 6190246Abstract: Perforated sheet steel or wire mesh to which tungsten carbide grit is copper braze welded to provide a device which can be cut to a desired size and shaped into or used as a substrate for tools used for sanding, filing, grinding, deburring, deflashing, cutting, sawing, filing and the like. The sheet steel being perforated provides apertures or recesses wherein removed material can collect and/or pass through reducing the clogging of the grit and frequency of cleaning the working surface of the tool or device. The apertures also provide for the flow of air, cooling the device in certain applications. Tungsten carbide gritted wire mesh is particularly good in providing a surface which tends to renew itself due to grit adhering to the side of the wire strands but not such as to clog the holes. Welding the grit to the wire mesh or cloth also causes the strands of the cloth to be welded together providing for a strong, yet flexible device or substrate.Type: GrantFiled: December 23, 1996Date of Patent: February 20, 2001Inventors: Brian H. Parrott, Roger W. Mason