Patents by Inventor W. Craig Willan

W. Craig Willan 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: 10634593
    Abstract: A method for testing for hydrogen embrittlement, including mounting a container around a steel alloy test specimen, the container having a closed bottom below a notched area on the test specimen and an open upper end above the notched area; applying a tensile load to the test specimen and sustaining the load for a selected duration to incubate potential hydrogen embrittlement cracks with a sub-critical flaw size if sufficient hydrogen in dangerous levels is present in the test specimen; then, while sustaining the load, dispensing a cryogenic fluid into the container, immersing and chilling the notched area, reducing the sub-critical flaw size for any hydrogen embrittlement cracks incubated; and with the sustained load, fracturing the notched area if the sub-critical flaw size of any hydrogen embrittlement cracks incubated reaches a critical flaw size.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: April 28, 2020
    Assignee: GOFF OMEGA HOLDINGS, LLC
    Inventor: W Craig Willan
  • Publication number: 20180238783
    Abstract: A method for testing for hydrogen embrittlement, including mounting a container around a steel alloy test specimen, the container having a closed bottom below a notched area on the test specimen and an open upper end above the notched area; applying a tensile load to the test specimen and sustaining the load for a selected duration to incubate potential hydrogen embrittlement cracks with a sub-critical flaw size if sufficient hydrogen in dangerous levels is present in the test specimen; then, while sustaining the load, dispensing a cryogenic fluid into the container, immersing and chilling the notched area, reducing the sub-critical flaw size for any hydrogen embrittlement cracks incubated; and with the sustained load, fracturing the notched area if the sub-critical flaw size of any hydrogen embrittlement cracks incubated reaches a critical flaw size.
    Type: Application
    Filed: February 6, 2018
    Publication date: August 23, 2018
    Applicant: GOFF OMEGA HOLDINGS, LLC
    Inventor: W Craig Willan
  • Patent number: 5370310
    Abstract: A device for directing the flow of an atomized slurry from the ejection orifice of an atomizer housing which is composed of a cylindrical liner bushing made of a wear-resistant material and a cylindrical sleeve bushing designed to support the liner bushing within the ejection orifice of the atomizer housing. The geometries of the liner and sleeve bushings form an annular, recessed shoulder at the discharge end of the bushings. During rotation of the atomizer, turbulent flow eddy currents pack slurry media into this shoulder. The liner bushing is bonded in the sleeve bushing under compression to create a residual preload opposing the centrifugal force generated by rotation of the atomizer housing.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: December 6, 1994
    Inventor: W. Craig Willan
  • Patent number: 5294059
    Abstract: A device for directing the flow of an atomized slurry from the ejection orifice of an atomizer housing which is composed of a cylindrical liner bushing made of a wear-resistant material and a cylindrical sleeve bushing designed to support the liner bushing within the ejection orifice of the atomizer housing. The geometries of the liner and sleeve bushings form an annular, recessed shoulder at the discharge end of the bushings During rotation of the atomizer, turbulent flow eddy currents pack slurry media into this shoulder. The liner bushing is bonded in the sleeve bushing under compression to create a residual preload opposing the centrifugal force generated by rotation of the atomizer housing.
    Type: Grant
    Filed: June 9, 1992
    Date of Patent: March 15, 1994
    Inventor: W. Craig Willan
  • Patent number: 5195701
    Abstract: An air cargo container with features for reducing damage caused by a bomb explosion. The container has a venting device which faces a fuselage wall of an airplane when the container is stowed. An explosion propels the venting device to pierce the fuselage wall of the airplane in the event of an explosion. This creates a hole which vents the shock waves and gas from the explosion.
    Type: Grant
    Filed: February 4, 1992
    Date of Patent: March 23, 1993
    Inventor: W. Craig Willan
  • Patent number: 4976136
    Abstract: A method of detecting cracks and structural separations in the fuselage of an aircraft utilizes a highly detectable gas such as chlorofluorocarbon. The gas will be pumped into the interior of the fuselage until the fuselage reaches a pressure that occurs during normal flight operations. A detector will then be moved over the skin of the fuselage. The detector is of a type that will detect minute amounts of any gas escaping through cracks and structural separations in the fuselage. The detector has an entrapment shoe which entraps any gas that might be bleeding off through a tiny crack. The detector has an alarm circuit which provides an alarm to the operator.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: December 11, 1990
    Inventor: W. Craig Willan