Patents by Inventor Paul William Dufilho

Paul William Dufilho 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).

  • Patent number: 10556196
    Abstract: A screen panel assembly includes a screen panel and a raised screen component disposed thereon. The raised screen component includes an inclined screen surface that defines a first plane oriented at a first angle relative to the screen panel and a wedge surface positioned at a back side of the raised screen component. The inclined screen surface has a front edge that is aligned with a top surface of the screen panel and is substantially perpendicular to a longitudinal axis of the screen panel, the first plane being substantially perpendicular to a displacement vector along which the screen panel assembly is accelerated by a vibratory separation device. The wedge surface is adapted to disrupt a flow path of a flow of a material mixture flowing in a longitudinal direction across the screen panel by redirecting the flow around opposing sides of the raised screen component.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: February 11, 2020
    Assignee: National Oilwell Varco, L.P.
    Inventors: Thomas Robert Larson, Paul William Dufilho
  • Publication number: 20170209820
    Abstract: A screen panel assembly includes a screen panel and a raised screen component disposed thereon. The raised screen component includes an inclined screen surface that defines a first plane oriented at a first angle relative to the screen panel and a wedge surface positioned at a back side of the raised screen component. The inclined screen surface has a front edge that is aligned with a top surface of the screen panel and is substantially perpendicular to a longitudinal axis of the screen panel, the first plane being substantially perpendicular to a displacement vector along which the screen panel assembly is accelerated by a vibratory separation device. The wedge surface is adapted to disrupt a flow path of a flow of a material mixture flowing in a longitudinal direction across the screen panel by redirecting the flow around opposing sides of the raised screen component.
    Type: Application
    Filed: April 6, 2017
    Publication date: July 27, 2017
    Inventors: Thomas Robert Larson, Paul William Dufilho
  • Patent number: 9643111
    Abstract: A screen panel assembly includes a screen panel and one or more raised screen components, wherein at least one of the raised screen components is disposed on the screen panel. Furthermore, each of the one or more raised screen components includes at least one inclined screen surface that defines a first plane that is oriented at a first angle relative to said screen panel. Additionally, the first plane is substantially aligned with a second plane that is oriented at a second angle relative to a third plane that is perpendicular to a displacement vector along which the screen panel assembly is accelerated by a vibratory separation device.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: May 9, 2017
    Assignee: National Oilwell Varco, L.P.
    Inventors: Thomas Robert Larson, Paul William Dufilho
  • Publication number: 20140251894
    Abstract: A screen panel assembly includes a screen panel and one or more raised screen components, wherein at least one of the raised screen components is disposed on the screen panel. Furthermore, each of the one or more raised screen components includes at least one inclined screen surface that defines a first plane that is oriented at a first angle relative to said screen panel. Additionally, the first plane is substantially aligned with a second plane that is oriented at a second angle relative to a third plane that is perpendicular to a displacement vector along which the screen panel assembly is accelerated by a vibratory separation device.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 11, 2014
    Applicant: National Oilwell Varco, LP
    Inventors: Thomas Robert Larson, Paul William Dufilho
  • Patent number: 8622220
    Abstract: A screen for a vibratory separator includes at least two layers of screening material, at least one layer of screening material made of a plurality of intersecting wires having a coating containing nickel or chromium. Wires in the screening material including first shute wires and first warp wires at a right angles to each other. The first warp wires at a right angle to first shute wires, the second wires including second shute wires and second warp wires, each of the second shute wires at a right angle to second warp wires, and each of the second warp wires at a right angle to second shute wires. The first warp wires are aligned with second warp wires, and each of the first shute wires are aligned with a second shute wire.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: January 7, 2014
    Assignee: Varco I/P
    Inventors: David Lee Schulte, Jr., Thomas Robert Larson, Paul William Dufilho
  • Publication number: 20090145816
    Abstract: Screen assemblies for vibratory separators and shale shakers, the screen assemblies in certain aspects having screening material with a protector on an outer periphery of the screening material; and methods of making such screen assemblies. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).
    Type: Application
    Filed: December 11, 2007
    Publication date: June 11, 2009
    Inventors: Paul William Dufilho, David L. Schulte, JR.
  • Publication number: 20090145836
    Abstract: A seal structure for sealing around the sides of a screen for a vibratory separator, the screen including a support, the support having two spaced-apart support ends and two spaced-apart support sides, screening material on the support, a seal member having ends and sides encompassing ends and sides of the support, the seal member having a bottom part connected to the seal member's two spaced-apart seal ends and the two spaced-apart seal sides, and the bottom member, in one aspect, having a hollow seal portion for sealingly contacting a supporting structure of the vibratory separator for supporting the screen. This Abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).
    Type: Application
    Filed: December 11, 2007
    Publication date: June 11, 2009
    Inventor: Paul William Dufilho
  • Publication number: 20090057205
    Abstract: A screen for a vibratory separator, the screen including at least two layers of screening material, at least part of the at least one layer of screening material coated with a coating containing nickel or chromium, the at least two layers of screening material including a first layer and a second layer, the first layer made of a plurality of intersecting first wires, the second layer made of a plurality of intersecting second wires, the first wires including first shute wires and first warp wires, each of the first shute wires at a right angle to first warp wires, each of the first warp wires at a right angle to first shute wires, the second wires including second shute wires and second warp wires, each of the second shute wires at a right angle to second warp wires, each of the second warp wires at a right angle to second shute wires, each of the first warp wires aligned with a second warp wires, and each of the first shute wires aligned with a second shute wire.
    Type: Application
    Filed: August 31, 2007
    Publication date: March 5, 2009
    Inventors: David Lee Schulte, JR., Thomas Robert Larson, Paul William Dufilho