Patents by Inventor David J. Allan

David J. Allan 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).

  • POWER STRUCTURE DIAGNOSTIC METHOD AND APPARATUS FOR IMPROVED MOTOR DRIVE DIAGNOSTIC COVERAGE
    Publication number: 20160141865
    Abstract: Motor drive diagnostic and control methods and apparatus are provided in which rectifier and inverter switching devices are individually monitored for malfunctions, and detected malfunctions initiate implementation of a safety function to signal a drive controller to shut down non-safety-related processing, to discontinue command pulse signaling to the switching devices, and to disable optical transmitters between the drive controller and the rectifier and inverter switches, and an input contactor or other switching circuit is opened to disconnect input power from the motor drive after implementation of the safety function.
    Type: Application
    Filed: May 20, 2015
    Publication date: May 19, 2016
    Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
    Inventors: Reginald A. Drake, Angelo Bortolus, Marius G. Chis, David J. Allan, Zhongyuan Cheng, Catalin Florin Gemanaru
  • Wine decanting machine
    Patent number: D257935
    Type: Grant
    Filed: August 25, 1978
    Date of Patent: January 20, 1981
    Assignee: Allwines Limited
    Inventor: David J. Allan