Patents by Inventor Douglas S. CAMPBELL

Douglas S. CAMPBELL 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: 10443250
    Abstract: A method for continuously extruding and depositing an unbroken layer of a slurry or mortar onto a selected work surface uses a mortar gun assembly with a chamber for receiving mortar from a remote supply hopper and an extruder configured to selectively apply a bead or ribbon of mortar of selected thickness onto the work surface. The user selectively applies mortar by controlling a rotating port valve between the hopper and the mortar gun chamber, and the rotating port valve provides a “rest state” in which the mortar is not sent to the mortar gun, but is instead re-circulated by the pump back to the hopper so un-dispensed mortar is kept moving and cannot dry or set.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: October 15, 2019
    Inventor: Douglas S. Campbell
  • Patent number: 10282674
    Abstract: Methods are provided for implementing schemes for embedding a particular optimization problem into a particular hardware solution employing unique graph embedding techniques. The disclosed methods implement an adiabatic quantum optimization in a quantum computing device or a quantum processor. Heuristics for graph minor embedding are employed to map a problem graph structure of a particular binary unconstrained optimization problem onto a physical graph structure (topology) of the quantum computing device or quantum processor to provide an optimized hardware implementation. Known constraints that are presented with current schemes in their application to particular hardware solutions are avoided, including limited qubit connectivity and the presence of faulty qubits.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: May 7, 2019
    Assignee: LOCKHEED MARTIN CORPORATION
    Inventors: Steven H. Adachi, Tessa J. Adair, James C. Boerkoel, Jr., Taylor W. Brent, Douglas S. Campbell, Theresa W. Lynn, Joel R. Ornstein
  • Publication number: 20190024395
    Abstract: A method for continuously extruding and depositing an unbroken layer of a slurry or mortar onto a selected work surface uses a mortar gun assembly with a chamber for receiving mortar from a remote supply hopper and an extruder configured to selectively apply a bead or ribbon of mortar of selected thickness onto the work surface. The user selectively applies mortar by controlling a rotating port valve between the hopper and the mortar gun chamber, and the rotating port valve provides a “rest state” in which the mortar is not sent to the mortar gun, but is instead re-circulated by the pump back to the hopper so un-dispensed mortar is kept moving and cannot dry or set.
    Type: Application
    Filed: October 12, 2015
    Publication date: January 24, 2019
    Inventor: Douglas S. CAMPBELL
  • Publication number: 20170101792
    Abstract: A method for continuously extruding and depositing an unbroken layer of a slurry or mortar onto a selected work surface uses a mortar gun assembly with a chamber for receiving mortar from a remote supply hopper and an extruder configured to selectively apply a bead or ribbon of mortar of selected thickness onto the work surface. The user selectively applies mortar by controlling a rotating port valve between the hopper and the mortar gun chamber, and the rotating port valve provides a “rest state” in which the mortar is not sent to the mortar gun, but is instead re-circulated by the pump back to the hopper so un-dispensed mortar is kept moving and cannot dry or set.
    Type: Application
    Filed: October 12, 2015
    Publication date: April 13, 2017
    Inventor: Douglas S. CAMPBELL
  • Publication number: 20160055421
    Abstract: Methods are provided for implementing schemes for embedding a particular optimization problem into a particular hardware solution employing unique graph embedding techniques. The disclosed methods implement an adiabatic quantum optimization in a quantum computing device or a quantum processor. Heuristics for graph minor embedding are employed to map a problem graph structure of a particular binary unconstrained optimization problem onto a physical graph structure (topology) of the quantum computing device or quantum processor to provide an optimized hardware implementation. Known constraints that are presented with current schemes in their application to particular hardware solutions are avoided, including limited qubit connectivity and the presence of faulty qubits.
    Type: Application
    Filed: August 20, 2015
    Publication date: February 25, 2016
    Inventors: Steven H. ADACHI, Tessa J. ADAIR, James C. BOERKOEL, JR., Taylor W. BRENT, Douglas S. CAMPBELL, Theresa W. LYNN, Joel R. ORNSTEIN
  • Patent number: 9157246
    Abstract: A method for extruding and depositing a slurry or mortar onto a selected work surface uses a mortar gun assembly with a chamber for receiving mortar from a remote supply hopper and an extruder configured to selectively apply a bead or ribbon of mortar of selected thickness onto the work surface. The mortar gun assembly provides mortar from the hopper under pressure and the user selectively applies mortar by controlling a rotating port valve between the hopper and the mortar gun chamber. The rotating port valve provides a “rest state” in which the mortar is not sent to the mortar gun, but is instead re-circulated by the pump back to the hopper so un-dispensed mortar is kept moving and cannot dry or set.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: October 13, 2015
    Inventor: Douglas S. Campbell
  • Publication number: 20120328792
    Abstract: A method for extruding and depositing a slurry or mortar onto a selected work surface uses a mortar gun assembly with a chamber for receiving mortar from a remote supply hopper and an extruder configured to selectively apply a bead or ribbon of mortar of selected thickness onto the work surface. The mortar gun assembly provides mortar from the hopper under pressure and the user selectively applies mortar by controlling a rotating port valve between the hopper and the mortar gun chamber. The rotating port valve provides a “rest state” in which the mortar is not sent to the mortar gun, but is instead re-circulated by the pump back to the hopper so un-dispensed mortar is kept moving and cannot dry or set.
    Type: Application
    Filed: May 18, 2012
    Publication date: December 27, 2012
    Inventor: Douglas S. CAMPBELL