Patents by Inventor Anthony G. Razzell

Anthony G. Razzell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20030034113
    Abstract: A method of manufacturing a ceramic matrix composite comprises forming a slurry comprising a ceramic sol, filler particles and a solvent and forming laminates of fibers (12). The laminates of fibers (12) are impregnated with the slurry and are stacked (14) on a mold (10). The stack (14) of laminates of fibers (12) is covered by a porous membrane (16), a breather fabric (18) and a vacuum bag (20). The vacuum bag (20) is evacuated and is heated to a temperature of 60° C. for 10 hours to produce a ceramic matrix composite. The ceramic matrix composite is then heated to a temperature of 1200° C. at atmospheric pressure to sinter the ceramic matrix composite.
    Type: Application
    Filed: September 18, 2002
    Publication date: February 20, 2003
    Inventors: Edwin G. Butler, Anthony G. Razzell, John Dominy, Paul A. Doleman, Ihsan A.H. Al-Dawery
  • Patent number: 6497776
    Abstract: A method of manufacturing a ceramic matrix composite comprises forming a slurry comprising a ceramic sol, filler particles and a solvent and forming laminates of fibres (12). The laminates of fibres (12) are impregnated with the slurry and are stacked (14) on a mould (10). The stack (14) of laminates of fibres (12) is covered by a porous membrane (16), a breather fabric (18) and a vacuum bag (20). The vacuum bag (20) is evacuated and is heated to a temperature of 60° C. for 10 hours to produce a ceramic matrix composite. The ceramic matrix composite is then heated to a temperature of 1200° C. at atmospheric pressure to sinter the ceramic matrix composite.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: December 24, 2002
    Assignee: Rolls-Royce plc
    Inventors: Edwin G. Butler, Anthony G. Razzell, John Dominy, Paul A. Doleman, Ihsan AI-I Al-Dawery
  • Publication number: 20020145500
    Abstract: An electrical conductor winding (70) comprises a plurality of laminates of electrical insulation (72). Each laminate of electrical insulation (72) has a slot (78) on one surface (76). Each laminate of electrical insulation (70) has an electrical conductor (82) arranged in the slot (78). An electrical connector (84) connects the electrical conductor (82) in one laminate of electrical insulation (78) with the electrical conductor (82) in an adjacent laminate of electrical insulation (72). The laminates of electrical insulation (72) are arranged such that the surface (74) of one laminate of electrical insulation (72) abuts and is bonded to the surface (76) of an adjacent laminate of electrical insulation (12). The laminates of electrical insulation (12) comprise a glass-ceramic material. The electrical conductor windings allow active magnetic bearings, electric motors and electric generators to be used at temperatures up to 500° C. for example in gas turbine engines.
    Type: Application
    Filed: March 26, 2002
    Publication date: October 10, 2002
    Inventors: Anthony G. Razzell, John J.A. Cullen, Diane Holland
  • Patent number: 6251317
    Abstract: The present method of manufacturing a ceramic composite material, composed of matrix and reinforcing materials and an intermediate weak interfice material, creates a composite material particuarly intended for use at temperatures above 1400° C. and in an oxidizing environment. The matrix and reinforcing materials consist of the same or different ceramic oxides having a melting point above 1600° C. The interface material provides in combination with the matrix and reinforcing materials a stress field liable to micro aciding. The reinforcing material is immersed into a powder slurry containing carbon (C) and ZrO2 so as to be coated thereby and then dried. After which, the thus created composite material is subjected to green forming and densifying steps. Finally, the composite material undergoes a heat-treatment in air leaving a porous structure of the interface material.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: June 26, 2001
    Assignees: Volvo Aero Corporation, Rolls Royce PLC, Societe Nationale d'Etude et de Construction de Moteurs d'Aviation, Office National d'Etudes et de Recherches Aerospatiales
    Inventors: Robert Lundberg, Magnus Holmquist, Anthony G. Razzell, Ludovic Molliex, Olivier Sudre, Michel Parlier, Fabrice Rossignol, Julien Parmentier