Patents by Inventor Nathan D. Ames

Nathan D. Ames 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: 10217534
    Abstract: A method for fabricating assemblies that includes providing a first component that further includes silicon carbide and that has an upper portion and a tapered lower portion; providing a second component that further includes silicon carbide and that has an upper portion that is adapted to receive the tapered lower portion of the first component; providing a predetermined amount of multiphase Al—Si braze foil; grinding the Al—Si braze foil into a powder; mixing a predetermined amount of braze paste binder with the Al—Si powder to form a slurry; uniformly applying the slurry to the tapered lower portion of the first component; uniformly applying the slurry to the upper portion of the second component and inserting the tapered lower portion of the first component into the upper portion of the second component; and heating the applied slurry to a temperature of 725° C. to 1450° C. for a predetermined period of time.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: February 26, 2019
    Inventors: Alber Sadek, Edward D. Herderick, Kirk E. Cooper, Nathan D. Ames
  • Patent number: 10032527
    Abstract: A method for fabricating assemblies includes providing first and second components that include ceramic, metal, or composite; positioning a multiphase joining interlayer between the first and second components, wherein the joining interlayer includes a first phase that melts at a first temperature and a second phase interspersed throughout the first phase, and wherein the second phase melts at a second temperature that is lower than the melting temperature of the first phase; and heating the joining interlayer to a temperature in the range of 725° C. to 1450° C. for a predetermined period of time to soften the first phase and melt the second phase, wherein the first phase remains in a solid or a semi-solid state, and wherein the second phase segregates to the boundaries of the first phase and transforms the joining interlayer into a substantially porosity-free adherent material that joins the first component to the second component.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: July 24, 2018
    Assignee: EDISON WELDING INSTITUTE, INC.
    Inventors: Edward D. Herderick, Kirk E. Cooper, Nathan D. Ames
  • Patent number: 9662733
    Abstract: Methods for welding a particle-matrix composite body to another body and repairing particle-matrix composite bodies are disclosed. Additionally, earth-boring tools having a joint that includes an overlapping root portion and a weld groove having a face portion with a first bevel portion and a second bevel portion are disclosed. In some embodiments, a particle-matrix bit body of an earth-boring tool may be repaired by removing a damaged portion, heating the particle-matrix composite bit body, and forming a built-up metallic structure thereon. In other embodiments, a particle-matrix composite body may be welded to a metallic body by forming a joint, heating the particle-matrix composite body, melting a metallic filler material forming a weld bead and cooling the welded particle-matrix composite body, metallic filler material and metallic body at a controlled rate.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: May 30, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: John H. Stevens, Redd H. Smith, James A. Oxford, Jose E. Ramirez, Nathan D. Ames, Shuchi P. Khurana
  • Publication number: 20090032310
    Abstract: Methods for welding a particle-matrix composite body to another body and repairing particle-matrix composite bodies are disclosed. Additionally, earth-boring tools having a joint that includes an overlapping root portion and a weld groove having a face portion with a first bevel portion and a second bevel portion are disclosed. In some embodiments, a particle-matrix bit body of an earth-boring tool may be repaired by removing a damaged portion, heating the particle-matrix composite bit body, and forming a built-up metallic structure thereon. In other embodiments, a particle-matrix composite body may be welded to a metallic body by forming a joint, heating the particle-matrix composite body, melting a metallic filler material forming a weld bead and cooling the welded particle-matrix composite body, metallic filler material and metallic body at a controlled rate.
    Type: Application
    Filed: July 29, 2008
    Publication date: February 5, 2009
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: John H. Stevens, Redd H. Smith, James A. Oxford, Jose E. Ramirez, Nathan D. Ames, Shuchi P. Khurana
  • Patent number: 6884963
    Abstract: Arc welding of duplex stainless steel tubing is accomplished using a non-pulsed electric arc and a high refractory weld flux. Weld beads, uniform throughout their lengths, and having a duplex phase structure and desirable profile are produced by single pass orbital welding, even if the wall thickness of the duplex tubing exceeds 2 mm.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: April 26, 2005
    Assignee: Swagelok Company
    Inventors: Nathan D. Ames, Andrew P. Marshall, Charles Sapsford, Edwin L. Wolf