Patents by Inventor Paul Withey

Paul Withey 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).

  • METHOD AND APPARATUS FOR PRODUCING CASTING SHELL
    Publication number: 20220379370
    Abstract: A ceramic casting shell is formed by a method comprising the steps of coating a wax former with one or more layers of a ceramic slurry; drying the or each layer of ceramic slurry; wherein the dried layer or layers of ceramic slurry form a ceramic shell; applying over the ceramic shell, a coating of a polymer material; heating the formed assembly to melt and remove the wax former, wherein the polymer coating acts as a strengthening layer to the ceramic shell during the wax removal process; and subsequent to removal of the wax former, heating the ceramic shell to melt and remove the polymer coating. The polymer coating is preferably the outer coating of the ceramic shell. The polymer coating may be applied by spraying, dipping or painting onto the ceramic shell.
    Type: Application
    Filed: May 5, 2022
    Publication date: December 1, 2022
    Inventors: Uriel Joseph, Paul Withey
  • METHOD AND APPARATUS ASSOCIATED WITH ANISOTROPIC SHRINK IN SINTERED CERAMIC ITEMS
    Publication number: 20140284848
    Abstract: A manufacturing method for producing ceramic item from a photocurable ceramic filled material by stereolithography. The method compensates for the anisotropic shrinkage of the item during firing to produce a dimensionally accurate item.
    Type: Application
    Filed: October 2, 2012
    Publication date: September 25, 2014
    Applicant: ROLLS-ROYCE CORPORATION
    Inventors: M. Eric Schlienger, Nina Bergan French, Michael D. Baldwin, Michael Maguire, Paul Withey
  • Method and Apparatus Associated with Anisotropic Shrink in Sintered Ceramic Items
    Publication number: 20100114357
    Abstract: A manufacturing method for producing ceramic item from a photocurable ceramic filled material by stereolithography. The method compensates for the anisotropic shrinkage of the item during firing to produce a dimensionally accurate item.
    Type: Application
    Filed: June 22, 2009
    Publication date: May 6, 2010
    Inventors: M. Eric Schlienger, Nina Bergan French, Michael D. Baldwin, Michael D. Maguire, Paul Withey
  • Method and apparatus associated with anisotropic shrink in sintered ceramic items
    Patent number: 7551977
    Abstract: A manufacturing method for producing ceramic item from a photocurable ceramic filled material by stereolithography. The method compensates for the anisotropic shrinkage of the item during firing to produce a dimensionally accurate item.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: June 23, 2009
    Assignee: Rolls-Royce Corporation
    Inventors: M. Eric Schlienger, Nina Bergan French, Michael D. Baldwin, Michael Maguire, Paul Withey
  • Method and apparatus associated with anisotropic shrink in sintered ceramic items
    Publication number: 20080063867
    Abstract: A manufacturing method for producing ceramic item from a photocurable ceramic filled material by stereolithography. The method compensates for the anisotropic shrinkage of the item during firing to produce a dimensionally accurate item.
    Type: Application
    Filed: April 19, 2007
    Publication date: March 13, 2008
    Inventors: M. Schlienger, Nina Bergan French, Michael Baldwin, Michael Maguire, Paul Withey
  • Turbine blade for a gas turbine engine
    Publication number: 20080063533
    Abstract: A turbine blade is manufactured as a single-crystal casting from a metal alloy, without a solution heat treatment step.
    Type: Application
    Filed: May 15, 2007
    Publication date: March 13, 2008
    Applicant: ROLLS-ROYCE PLC
    Inventors: Christopher Boyle, Philip Jennings, Julian Mason-Flucke, Michael Wardle, Paul Withey
  • Forming structures by laser deposition
    Publication number: 20060054079
    Abstract: A method of forming at least a part of a single crystal component (34) comprising a base material, the method comprises the steps of; directing a flow of base material (24) at a first location (22) on a substrate (26, 34), directing a laser (20) towards the first location (22) to fuse the flow of base material (24) with the substrate (26, 34) thereby forming a deposit (22) on the substrate (26), characterised in that, the method comprises controlling the rate of cooling of the deposit (22) and/or substrate (26, 34) so that the single crystal extends into the deposit (22).
    Type: Application
    Filed: September 13, 2005
    Publication date: March 16, 2006
    Inventors: Paul Withey, Max Schlienger