Patents by Inventor Steven Kennerknecht

Steven Kennerknecht 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).

  • Investment castings and process
    Patent number: 8631852
    Abstract: An investment casting process is provided in which a molten aluminum metal is cast into a refractory mold and thereafter cooled to solidify the metal in the mold. The improvement includes the step of cooling the mold and solidifying the metal therein which is carried out by placing the mold in a chamber adapted to retain a liquid. The mold is mounted in a stationary condition in the chamber. A coolant liquid is introduced into the chamber to immerse the mold in the liquid while maintaining the mold in a stationary condition.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: January 21, 2014
    Inventor: Steven Kennerknecht
  • INVESTMENT CASTINGS AND PROCESS
    Publication number: 20110303384
    Abstract: An investment casting process is provided in which a molten aluminum metal is cast into a refractory mold and thereafter cooled to solidify the metal in the mold. The improvement includes the step of cooling the mold and solidifying the metal therein which is carried out by placing the mold in a chamber adapted to retain a liquid. The mold is mounted in a stationary condition in the chamber. A coolant liquid is introduced into the chamber to immerse the mold in the liquid while maintaining the mold in a stationary condition.
    Type: Application
    Filed: June 10, 2011
    Publication date: December 15, 2011
    Inventor: Steven KENNERKNECHT
  • Shaped metal panels and forming same by shot peening
    Patent number: 6938448
    Abstract: A panel, such as is intended for an aircraft wing panel, has continuous ribs extending on one surface. The panel is formed, or given a dihedral bend, by shot peening the ribs at a V-shaped section to expand the V-shaped sections and thus deform the panel. A strong formed panel is thus provided with continuous ribs. Further shot peening steps can be carried out on the panel for further shaping.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: September 6, 2005
    Assignee: Sonaca NMF Canada Inc.
    Inventors: Steven Kennerknecht, David Cook
  • Automated method and apparatus for aircraft surface finishing
    Publication number: 20020072297
    Abstract: An improved method and automated apparatus provides for the automated surface finishing of aircraft panels, which includes a central controller, a universal shuttle for transporting aircraft panels, scanning means and a panel surface processor moveable about a plurality of axes to present a plurality of surface finishing tools to act upon the panel is disclosed herein.
    Type: Application
    Filed: December 8, 2000
    Publication date: June 13, 2002
    Inventors: Steven Kennerknecht, Serge Fortin
  • Shaped metal panels and forming same by shot peening
    Publication number: 20020050157
    Abstract: A panel, such as is intended for an aircraft wing panel, has continuous ribs extending on one surface. The panel is formed, or given a dihedral bend, by shot peening the ribs at a V-shaped section to expand the V-shaped sections and thus deform the panel. A strong formed panel is thus provided with continuous ribs. Further shot peening steps can be carried out on the panel for further shaping.
    Type: Application
    Filed: September 5, 2001
    Publication date: May 2, 2002
    Applicant: NMF Canada Inc.
    Inventors: Steven Kennerknecht, David Cook
  • Ceramic core for investment casting and method for preparation of the same
    Patent number: 5468285
    Abstract: There is disclosed a core mix and a method of fabricating the core for use in investment casting. The core composition comprises an acid soluble borate binder in a high percentage by weight of the composition. A refractory selected from period three nitride compounds is employed with the binder to impart strength to the core. The use of the combination of binder and refractory as disclosed herein provides a high strength core which is readily soluble by mild environmentally friendly acids.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: November 21, 1995
    Inventor: Steven Kennerknecht
  • Casting method for metal matrix composite castings
    Patent number: 5394930
    Abstract: The invention discloses an improved method for forming metal matrix composite castings. The method achieves the casting having increased mechanical properties by using a selectively permeable mold in conjunction with pressurized gas. This allows a greater degree of metal infiltration within the interstices of a suspended preform. The method teaches the use of whiskered, fibered and particulated ceramic constituents for use in the preform, as well as various embodiments of casting methods.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: March 7, 1995
    Inventor: Steven Kennerknecht
  • Ceramic core for investment casting and method for preparation of the same
    Patent number: 5387280
    Abstract: There is disclosed a core mix and a method of fabricating the core for use in investment casting. The core composition comprises an acid soluble borate binder in a high percentage by weight of the composition. A refractory selected from period three nitride compounds is employed with the binder to impart strength to the core. The use of the combination of binder and refractory as disclosed herein provides a high strength core which is readily soluble by mild environmentally friendly acids.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: February 7, 1995
    Assignee: Pechiney Recherche
    Inventor: Steven Kennerknecht