Patents by Inventor Clifford James Walker

Clifford James Walker 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: 9853552
    Abstract: A method of operating a power converter includes applying a first signal sequence to one or more terminals of the power converter to unlock a controller of the power converter and cause the controller to enter a programming mode, applying a second signal sequence to the one or more terminals of the power converter to program a controller parameter of the power converter, and applying a third signal sequence to the one or more terminals to lock the controller of the power converter and cause the power converter to enter a locked mode. The one or more terminals of the power converter includes one or more input terminals of the power converter that converter are adapted to be coupled to a programmable ac or dc supply, or one or more output terminals of the power converter that are adapted to be coupled to a programmable electronic load.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: December 26, 2017
    Assignee: Power Integrations, Inc.
    Inventors: Clifford James Walker, David Michael Hugh Matthews
  • Publication number: 20170117811
    Abstract: A method of operating a power converter includes applying a first signal sequence to one or more terminals of the power converter to unlock a controller of the power converter and cause the controller to enter a programming mode, applying a second signal sequence to the one or more terminals of the power converter to program a controller parameter of the power converter, and applying a third signal sequence to the one or more terminals to lock the controller of the power converter and cause the power converter to enter a locked mode. The one or more terminals of the power converter includes one or more input terminals of the power converter that converter are adapted to be coupled to a programmable ac or dc supply, or one or more output terminals of the power converter that are adapted to be coupled to a programmable electronic load.
    Type: Application
    Filed: January 4, 2017
    Publication date: April 27, 2017
    Inventors: Clifford James Walker, David Michael Hugh Matthews
  • Patent number: 9570988
    Abstract: This relates to systems and processes for programming parameters of a controller of a power converter. In one example, a predetermined signal may be applied to the input or output terminals of the power converter to unlock the controller and cause the controller to enter a programming mode. While in the programming mode, one or more additional predetermined signals may be applied to the terminals of the power converter to program one or more parameters of the controller. Once the desired parameters have been programmed, another predetermined signal may be applied to the terminals of the power converter to cause the controller to exit the programming mode and enter a locked mode. The predetermined signals applied to the terminals of the power converter can include an ac or dc signal having a predetermined pattern of changes in frequency, amplitude, and/or magnitude that are applied for a fixed or variable duration.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: February 14, 2017
    Assignee: Power Integrations, Inc.
    Inventors: Clifford James Walker, David Michael Hugh Matthews
  • Publication number: 20160118896
    Abstract: This relates to systems and processes for programming parameters of a controller of a power converter. In one example, a predetermined signal may be applied to the input or output terminals of the power converter to unlock the controller and cause the controller to enter a programming mode. While in the programming mode, one or more additional predetermined signals may be applied to the terminals of the power converter to program one or more parameters of the controller. Once the desired parameters have been programmed, another predetermined signal may be applied to the terminals of the power converter to cause the controller to exit the programming mode and enter a locked mode. The predetermined signals applied to the terminals of the power converter can include an ac or dc signal having a predetermined pattern of changes in frequency, amplitude, and/or magnitude that are applied for a fixed or variable duration.
    Type: Application
    Filed: October 22, 2014
    Publication date: April 28, 2016
    Inventors: Clifford James WALKER, David Michael Hugh MATTHEWS
  • Patent number: 5681441
    Abstract: A method for the electroplating of conductive metal onto a substrate containing at least one hole and an electroplateable surface which is conducive to subsequent metal deposition comprises placing the substrate in close proximity to an electrode but such that there is no substantial electrical continuity between the electroplateable surface and the electrode prior to electroplating. The electroplateable surface is preferably an electroplateable pattern which comprises either a conductive metal pattern or a catalytic pattern for subsequent plating. This process can be employed with any electroplateable pattern technique which is recognized in the art such as, for example, printing, stamping, plating, photographic or electrophotographic processes. In one embodiment, this process can be employed in the production of Plated Wire, i.e., a product which can be effectively employed as a replacement for drawn wires in power distribution applications.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: October 28, 1997
    Assignee: ELF Technologies, Inc.
    Inventors: Leo Gulvad Svendsen, Clifford James Walker, James Leborn Lykins, II