Patents by Inventor Deven John Efta

Deven John Efta 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).

  • Alloy for cast iron repair
    Patent number: 9975208
    Abstract: An alloy for cladding cast iron is disclosed. The alloy may include on a weight basis, about 6.2% to about 9.3% of chromium (Cr), about 3.0% to about 4.5% of iron (Fe), about 1.4% to about 2.15% of silicon (Si), about 0.5% to about 0.8% of boron (B), about 0.1% of carbon (C), and a balance of nickel (Ni) and incidental impurities.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: May 22, 2018
    Assignee: Caterpillar Inc.
    Inventors: Tomasz J. Chojnacki, Deven John Efta, Mark D. Veliz
  • Check valve for an engine breather assembly
    Patent number: 8893690
    Abstract: A check valve for a breather assembly includes a valve seat defining a seat opening, a valve stop coupled to the valve seat, and a valve element disposed between the valve seat and the valve stop and including a first element surface and a second element surface. The valve element may be sufficiently flexible to actuate between a closed position, in which the first element surface engages the valve seat, and an open position, in which the second element surface engages the valve stop. The valve element may further include a passage, such as apertures, extending from the first element surface to the second element surface.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: November 25, 2014
    Assignee: Caterpillar Inc.
    Inventors: Deven John Efta, D. Brent Cluskey
  • Check Valve for an Engine Breather Assembly
    Publication number: 20130298885
    Abstract: A check valve for a breather assembly includes a valve seat defining a seat opening, a valve stop coupled to the valve seat, and a valve element disposed between the valve seat and the valve stop and including a first element surface and a second element surface. The valve element may be sufficiently flexible to actuate between a closed position, in which the first element surface engages the valve seat, and an open position, in which the second element surface engages the valve stop. The valve element may further include a passage, such as apertures, extending from the first element surface to the second element surface.
    Type: Application
    Filed: May 10, 2012
    Publication date: November 14, 2013
    Applicant: CATERPILLAR, INC.
    Inventors: Deven John Efta, D. Brent Cluskey