Patents Assigned to Norton Company
  • Adhesive formulation
    Patent number: 5519095
    Abstract: This invention provides a method of forming a joint in an abrasive belt using a novel joint adhesive comprising a polyesterurethane, a cross-linking agent and a reactive polyol solvent.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: May 21, 1996
    Assignee: Norton Company
    Inventor: Peter J. Case
  • Superabrasive tool
    Patent number: 5518443
    Abstract: The present invention is related to an abrasive tool comprising a core and abrasive segments attached to said core wherein said abrasive segments comprise a bond material and superabrasive grains and wherein said segments comprise at least two circumferentially spaced regions and wherein said superabrasive grains are alternately dispersed in said regions in high and low concentrations of superabrasive grains. The present invention is further related to an abrasive tool comprising a core and abrasive segments attached to said core wherein said abrasive segments comprise a bond material and superabrasive grains, wherein said abrasive segments comprise at least two circumferentially spaced regions and wherein said superabrasive grains are alternately dispersed in every other region.
    Type: Grant
    Filed: May 13, 1994
    Date of Patent: May 21, 1996
    Assignee: Norton Company
    Inventor: Kawika S. Fisher
  • Alumina sol-gel fiber
    Patent number: 5514631
    Abstract: An alumina based ceramic fiber having submicron sized alpha alumina crystals and a density of at least 95% theoretical is obtained from a sol-gel process.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: May 7, 1996
    Assignee: Norton Company
    Inventors: Thomas E. Cottringer, Ronald H. van de Merwe, Ralph Bauer, Walter A. Yarbrough
  • Infiltrant for metal bonded abrasive articles
    Patent number: 5505750
    Abstract: The present invention is an abrasive tool comprising abrasive particles, hard phase particles and a metal bond, wherein the metal bond comprises a near-eutectic copper phosphorus composition. The present invention further includes an abrasive tool comprising a metallic core; and an abrasive composition bonded to the metallic core; wherein the abrasive composition comprises abrasive particles, hard phase particles and a metal bond, and wherein the metal bond comprises a near-eutectic copper-phosphorus composition. The invention further includes a process of manufacturing the above abrasive tool.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: April 9, 1996
    Assignee: Norton Company
    Inventor: Richard M. Andrews
  • Vitrified abrasive bodies
    Patent number: 5472461
    Abstract: Improved hot-pressed vitrified bodies are described, which comprise an abrasive material, a vitreous bond; and at least one extender agent. The extender agent may be formed of hollow ceramic bodies such as glass or mullite spheres, alone or in combination with a non-reactive material such as graphite. An improved method for preparing vitrified abrasive wheels is also described.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: December 5, 1995
    Assignee: Norton Company
    Inventor: Rounan Li
  • Process for drip casting silicon nitride slurries
    Patent number: 5466400
    Abstract: A process for drip casting silicon nitride slurries.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: November 14, 1995
    Assignee: Norton Company
    Inventors: Vimal K. Pujari, Gulio Rossi
  • Method of abrading with boron suboxide (BxO) and the boron suboxide (BxO) articles and composition used
    Patent number: 5456735
    Abstract: A method of removing material from a surface comprising abrading a surface comprising the step of abrading a surface with an abrasive tool or an abrasive powder comprising a boron suboxide (BxO) composition, wherein during the abrading step the boron suboxide (BxO) composition is maintained at low temperatures. The abrasive which is from the boron suboxide (BxO) family of compounds exhibits an unexpectedly high quality of abrading comparable with the highest quality particulate natural and synthetic diamond, which has a hardness about double that of the boron suboxide (BxO) of the present invention.Further, the invention includes a lapping and polishing powder and lapping slurry wherein the powder is made from a dense, finely crystalline boron suboxide material with a Knoop hardness KHN.sub.100 of at least about 2800 kg/mm.sup.2 and preferably at least 3800 kg/mm.sup.2.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: October 10, 1995
    Assignee: Norton Company
    Inventors: Cristan Ellison-Hayashi, George T. Emond, Shih Y. Kuo
  • Curl resistant coated abrasive backing with radiation curable cloth finishing additive
    Patent number: 5456975
    Abstract: This invention relates to the construction of backings for coated abrasive products that avoid curling tendencies during adhesive curing and subsequent steps. Curling of the backing is discouraged by the utilization of at least one finishing material carried by said fabric which comprises the product of a reaction between an unsaturated hexafunctional acrylated urethane oligomer component and an unsaturated carboxyfunctional monomer component. These components are caused to react with one another to form cross linking when exposed to actinic or electron beam radiation.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: October 10, 1995
    Assignee: Norton Company
    Inventors: Eugene Zador, Dhiraj H. Darjee, Stanley J. Supkis
  • Superabrasive tool
    Patent number: 5443418
    Abstract: Superabrasive tools incorporating into the structure filamentary particles formed from a microcrystalline alumina confer significant advantages which depend on the orientation of the particles.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: August 22, 1995
    Assignee: Norton Company
    Inventors: James E. Frodin, Scott Pellow, Jean Kramp
  • Laminated diamond substrate
    Patent number: 5441791
    Abstract: A synthetic diamond wafer grown by deposition from a plasma has a smooth, substrate side face and a rough, deposition side face. The rough face is coated with a bonding agent which fills the valleys and is finished so that its surface is parallel to the substrate side face to permit photolithographic processing of the wafer. Also disclosed is a multi-wafer laminate of two or more diamond film layers bonded together with an interlayer. Smooth, flat outer faces of the layers are oriented mutually parallel. The inner, bonded faces may be rough. A filler of diamond particles in the bonding agent improves the thermal conductivity of the laminate.
    Type: Grant
    Filed: May 24, 1993
    Date of Patent: August 15, 1995
    Assignee: Norton Company
    Inventor: Richard C. Eden
  • Method of producing a non-slip sheet
    Patent number: 5433979
    Abstract: Non-slip laminatable materials are provided by coating a polymer sheet backing with mineral particles adhered to the backing by a radiation curable adhesive.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: July 18, 1995
    Assignee: Norton Company
    Inventor: David E. Williams
  • Pavement cutting saw
    Patent number: 5429420
    Abstract: A device for cutting cured and uncured (green) pavement including concrete which is capable of cutting a straight groove without the guidance of an operator. The cutting blade is positioned between the front and rear soft contour wheels in a vertical plane which is side-to-side equi-distant between the wheels. The blade, blade drive motor and the wheel drive motor are arranged so that each wheel carries approximately the same weight to enable the cutting device to move, unassisted, in a straight line.
    Type: Grant
    Filed: January 3, 1994
    Date of Patent: July 4, 1995
    Assignee: Norton Company
    Inventor: James P. Johnson
  • Process for inducing porosity in an abrasive article
    Patent number: 5429648
    Abstract: The invention is a process of manufacturing an abrasive article with the steps of forming an abrasive article in the unfired state comprising an abrasive, a vitreous bond and a polymer resin wherein the polymer resin has an elastic modulus greater than about 2.0.times.10.sup.9 Pa, a weight gain due to moisture absorption when measured after exposure to a 90.degree. C. temperature and 85% relative humidity for 10 hours of less than about 2 wt % and a weight loss on firing in a nitrogen atmosphere at 5.degree. C. per minute to 550.degree. C. of greater than about 95 wt %, and firing the abrasive article thereby decomposing the polymer resin and creating pores in the abrasive article. The invention further includes the abrasive article formed in the unfired state by the above process.
    Type: Grant
    Filed: September 23, 1993
    Date of Patent: July 4, 1995
    Assignee: Norton Company
    Inventor: Mianxue Wu
  • Modified polyvinyl chloride composition
    Patent number: 5428087
    Abstract: Finished articles made of flexible polyvinyl chloride (PVC) using plastisol technology are improved in terms of resistance to heat and solvents and reduction in plasticizer migration by incorporating into the traditional plastisol ingredients substantial amounts of blocked di- or polyisocyanates and di- or polyols and/or di- or polyamines, which, upon heating react with each other to form a polymer network within the article while the PVC is gelling.
    Type: Grant
    Filed: November 2, 1993
    Date of Patent: June 27, 1995
    Assignee: Norton Company
    Inventors: Dominique Petit, Michel Ladang
  • Remotely controlled sampling device having a vent passage connecting an internal chamber to the environment through an upper outlet
    Patent number: 5410919
    Abstract: A remotely controlled fluid sampling device adapted to take and retrieve samples from any depth or level within a body of fluid comprises an elongated tubular container, the upper outlet end of which is sealingly attached to an end cap. The end cap has a vent passage, a drain passage, a manually operated stop cock for opening and closing off the drain passage, and an eye or hook portion for attaching a support means thereto. A sealed housing is sealingly attached to the opposite inlet end portion of the tubular container and encloses an upper valve chamber with a fluid passage in its outer wall and a lower power chamber separated by an upper end wall in which a valve bore is sealingly engaged by an axially moveable valve stem.
    Type: Grant
    Filed: September 3, 1992
    Date of Patent: May 2, 1995
    Assignee: Norton Company
    Inventors: Robert E. Carpenter, Scott Santora, Stephen A. Borgianini
  • Method of making synthetic diamond wear component
    Patent number: 5411758
    Abstract: A method is disclosed for making a wear component that includes providing a base surface, producing a synthetic diamond film having at least a particular equivalent strain, and applying the diamond film to the base surface. A method is also disclosed for producing synthetic diamond for use as a wear surface, by chemical vapor deposition wherein the equivalent strain of the synthetic diamond is monitored, and deposition parameters are modified when the equivalent strain of the synthetic diamond is less than a predetermined percentage.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: May 2, 1995
    Assignee: Norton Company
    Inventor: Matthew Simpson
  • Radome wall design having broadband and mm-wave characteristics
    Patent number: 5408244
    Abstract: The invention describes a multi-layer radome construction which is termed a D-sandwich and allows excellent transmission efficiency over areas of the entire spectrum of DC to at least 100 GHz. The radome wall construction comprises a core layer of low dielectric constant material bounded by intermediate layers of high dielectric constant material which themselves are bounded by additional layers of low dielectric constant material. Each of the low dielectric constant layers has a substantial electrical effect upon the performance of the radome as well as being a high strength material which provides substantial structural rigidity to the radome. The radome may be further provided with one or more protective surface coatings for certain environmental conditions, without destroying the desired transmission characteristics of the radome.
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: April 18, 1995
    Assignee: Norton Company
    Inventor: S. Benjamin Mackenzie
  • Polymer backed material with non-slip surface using E-beam cured urethane binder
    Patent number: 5401560
    Abstract: Non-slip laminatable materials are provided by coating a polymer sheet backing with mineral particles adhered to the backing by a radiation curable adhesive.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: March 28, 1995
    Assignee: Norton Company
    Inventor: David E. Williams
  • Process and additive for the ladle refining of steel
    Patent number: 5397379
    Abstract: A process of refining steel in a ladle using solid granules or briquettes made from recycled LMF slag and raw materials to make a desulfurizing addition, a slag conditioner or synthetic refining slag is described. The preferred recycled LMF slag material generally comprises of 35% to about 65% CaO; 10% to about 35% Al.sub.2 O.sub.3 ; 1% to about 10% SiO.sub.2 ; 3% to about 15% MgO; 0.3% to about 10% FeO; 0.1% to about 5% MnO; 0% to about 0.5% P.sub.2 O.sub.5 ; and 0.1% to about 0.5% S. The ladle refining additive comprises from about 10% to about 90% of a recycled ladle metallurgy furnace slag and the balance of raw materials selected from the group consisting of: a calcium oxide source; soda ash; fluorspar; borax; calcium carbonate; aluminum source; calcium aluminate; alumina source; metallic calcium, magnesium, sodium and their oxides, fluorides and carbides; and mixtures of all of the foregoing.
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: March 14, 1995
    Assignee: Oglebay Norton Company
    Inventors: Bruce J. Barker, William C. Weber, William J. West
  • Abrasive material and method
    Patent number: 5395407
    Abstract: The hardness and microstructure of aluminous abrasives produced from alumina gels are enhanced by introduction of seed material as by wet vibratory milling of the material with alumina media, or by the direct addition of very fine alpha alumina particles in the amount of 1% or less.
    Type: Grant
    Filed: October 4, 1988
    Date of Patent: March 7, 1995
    Assignee: Norton Company
    Inventors: Thomas E. Cottringer, Ronald H. van de Merwe, Ralph Bauer, Walter A. Yarbrough