Patents Assigned to Norton Company
  • Synthetic diamond wear component and method
    Patent number: 5633087
    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: May 12, 1995
    Date of Patent: May 27, 1997
    Assignee: Norton Company
    Inventor: Matthew Simpson
  • Waterproof paper-backed coated abrasives
    Patent number: 5624471
    Abstract: Waterproof coated abrasive paper made using a maker and/or size coat comprising a radiation-curable binder that is hydrophobic when polymerized.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: April 29, 1997
    Assignee: Norton Company
    Inventors: Anthony C. Gaeta, Gwo S. Swei
  • Method for preparing mixtures for abrasive articles
    Patent number: 5611827
    Abstract: An improved method for preparing a molding material for abrasive articles has been developed. The method includes the step of continuously blending an abrasive material with a curing agent and measured portions of two phenol-novolac resins, one of which has a phenol-formaldehyde molar ratio in the range of about 1:0.2 to 1:0.35. The blending composition can also include various other materials, such as fillers. The resulting product is a flowable, granular material homogeneously coated with the phenol-novolac resins. The product can be directly molded, i.e., without an aging step, into various abrasive articles, such as grinding wheels.In another embodiment, either a continuous or discontinuous technique can be used to blend the phenol-novolac resins, and the molded product is then cold pressed or warm pressed at a pressing temperature less than about 140.degree. C.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: March 18, 1997
    Assignee: Norton Company
    Inventors: Janet L. Hammarstrom, Michael J. Lemberger, Mark W. Rowden, Arno Gardziella
  • Vitreous grinding tool containing metal coated abrasive
    Patent number: 5607489
    Abstract: A vitreous bonded abrasive tool comprises 12 to 50% bond, 5 to 50% metal coated superabrasive, at least 10% porosity and 2 to 20% solid lubricant. The abrasive tool containing titanium or nickel coated diamond is particularly effective in grinding ceramic material, such as sapphire.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: March 4, 1997
    Assignee: Norton Company
    Inventor: Rounan Li
  • Method of making a wear component by plasma jet CVD
    Patent number: 5589232
    Abstract: A method for making a wear component that includes providing a base surface, producing a synthetic diamond film by plasma jet CVD having at least a particular equivalent strain, and applying the diamond film to the base surface.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: December 31, 1996
    Assignee: Norton Company
    Inventor: Matthew Simpson
  • Curl-resistant coated abrasives
    Patent number: 5582625
    Abstract: A coated abrasive backing material is provided which is suitable for heavy duty grinding applications is provided by a continuous solid resin matrix having dispersed therein an essentially isotropic fibrous web. The invention also provides a coated abrasive based on said backing.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: December 10, 1996
    Assignee: Norton Company
    Inventors: Howard R. Wright, Richard Vogel, Richard Sargood, Gwo S. Swei, Jane L. Cercena
  • Mesh-backed abrasive products
    Patent number: 5578343
    Abstract: A mesh backed coated abrasive product is provided that has a binder coat that can be partially cured by radiation and finally cured at the same time as a size applied over the top of the maker coat. The use of the radiation curable binder permits the elimination of fabric pre-treatment and speeds the production process considerably.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 26, 1996
    Assignee: Norton Company
    Inventors: Anthony C. Gaeta, Gwo S. Swei, Neil W. Durkee
  • Hot metal grinding
    Patent number: 5577956
    Abstract: A coated abrasive suitable for conditioning a freshly cast metal surface comprises a backing having a cyclic elongation at a temperature of 150.degree. C. of less than 3%.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: November 26, 1996
    Assignee: Norton Company
    Inventor: Dhiraj H. Darjee
  • Washable coated abrasives
    Patent number: 5578097
    Abstract: A washable coated abrasive material comprising a substrate and maker, size and optionally supersize coats and a functionalized polysiloxane modifying the binder of the outermost layer.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: November 26, 1996
    Assignee: Norton Company
    Inventors: Anthony C. Gaeta, Gwo S. Swei
  • Sol-gel alumina abrasive wheel with improved corner holding
    Patent number: 5573561
    Abstract: The present invention provides a vitreous-bonded abrasive grinding wheel wherein the abrasive grit portion comprises a sol-gel alumina abrasive and wherein the wheel has improved corner or form holding characteristics and mechanical properties. The invention further includes the bond composition which allows for improved corner or form holding and mechanical properties with sol-gel alumina abrasives.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: November 12, 1996
    Assignee: Norton Company
    Inventors: David A. Sheldon, Robert S. Lundberg, Xiaoming Li
  • Friction coating for film backings
    Patent number: 5573816
    Abstract: A friction promoting layer is provided which comprises a binder and particulate material and is suitable for use with film backed coated abrasives. The binder used is one that shrinks upon drying and curing to ensure that particulates in the layer are not buried in the binder component.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 12, 1996
    Assignee: Norton Company
    Inventors: Anthony C. Gaeta, Gwo S. Swei
  • Dual-cure binder system
    Patent number: 5571297
    Abstract: A coated abrasives having very desirable efficiencies in production is provided by the use of a binder coat which comprises a compound having at least one function that is radiation curable and at least one function that is polymerizable under thermally activated conditions.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 5, 1996
    Assignee: Norton Company
    Inventors: Gwo S. Swei, Anthony C. Gaeta, Wen L. P. Yang, Jane L. Cercena
  • Universal sampling device for high and low viscosity substances
    Patent number: 5566576
    Abstract: A universal sampling device for retrieving samples of high and low viscosity substances at various depths and from specific portions of contained bodies of materials without being completely submerged therein, is disclosed. The sampling device is made of chemically inert material, has manually operable inlet and outlet vent valve means attached to opposite inlet and outlet ends of a relatively long tube into which the sample enters upon opening of the inlet and outlet valve means at the desired point in the substance to be tested. Means are provided for manually closing and opening of the inlet valve means such as pushing and pulling a valve stem by hand into sealingly engagement with an inlet valve body. Another method attaches a valve stem to an adjustable valve control rod extending upwardly through the tube and outlet valve means.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: October 22, 1996
    Assignee: Norton Company
    Inventors: Samuel E. Sher, Stephen A. Borgianini, Robert E. Carpenter, Scott Santora, William S. Scavuzzo
  • Composite abrasive products
    Patent number: 5556438
    Abstract: Composite abrasive wheels having shaped abrasive grits bonded to a fibrous substrate are more effective than their counterparts with irregularly shaped grain, especially at finer grit sizes.
    Type: Grant
    Filed: September 21, 1994
    Date of Patent: September 17, 1996
    Assignee: Norton Company
    Inventors: Gary J. Kardys, Robert G. Kelly
  • Dielectric curing
    Patent number: 5542961
    Abstract: Use of dielectric heating to cure a thermosettable resin component of a binder formulation used to secure abrasive particles to a backing in a coated abrasive greatly accelerates the production process.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: August 6, 1996
    Assignee: Norton Company
    Inventors: Gwo S. Swei, Nicolas Avril, Jony Wijaya
  • Alumina abrasive wheel with improved corner holding
    Patent number: 5536283
    Abstract: The present invention provides a vitreous-bonded abrasive grinding wheel wherein the abrasive grit portion comprises an alumina abrasive and wherein the wheel has improved corner or form holding characteristics and mechanical properties. The invention further includes the bond composition which allows for improved corner or form holding and mechanical properties with alumina abrasives.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: July 16, 1996
    Assignee: Norton Company
    Inventors: David A. Sheldon, Robert S. Lundberg
  • Coated abrasives with rapidly curable adhesives
    Patent number: 5527368
    Abstract: A coated abrasive having improved properties of grinding performance and brittleness, said abrasive comprising a backing and an abrasive coating adhered thereon wherein the abrasive coating comprises a suspension containing lapping size abrasive grains and a binder, said binder containing a diacrylated monomer and a triacrylated or higher acrylated monomer.
    Type: Grant
    Filed: May 17, 1989
    Date of Patent: June 18, 1996
    Assignee: Norton Company
    Inventors: Stanley J. Supkis, Eugene Zador, Sitaramaiah Ravipati, Richard A. Romano, Walter A. Yarbrough
  • High density green bodies
    Patent number: 5525557
    Abstract: This invention relates a high density green bodies, particularly high density silicon nitride spherical green bodies having substantially no radial density gradients.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: June 11, 1996
    Assignee: Norton Company
    Inventors: Vimal K. Pujari, Gulio Rossi
  • Abrasive products
    Patent number: 5525100
    Abstract: Coated abrasive materials can be made from a backing material and abrasive elements which comprise abrasive particles adhered to a rigid base material, said elements being rigidly adhered to the backing material in a predetermined pattern.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: June 11, 1996
    Assignee: Norton Company
    Inventors: Robert G. Kelly, Gary J. Kardys
  • Multi-layer superhard film structure
    Patent number: 5518766
    Abstract: A multi-layer diamond film is grown by d.c. arc assisted plasma deposition. A series of layers are deposited on each other by periodically back-etching the surface and renucleating during deposition. There may also be deposited a thin layer of non-diamond carbon material between the diamond layers, but no other non-carbon material. Renucleation is controlled by varying the proportion of methane to hydrogen in the feed gases, by temperature cycling of the substrate, or by inducing modal changes in the arc.
    Type: Grant
    Filed: September 2, 1993
    Date of Patent: May 21, 1996
    Assignee: Norton Company
    Inventors: Louis K. Bigelow, Robert M. Frey, Gordon L. Cann