Patents by Inventor Timothy S. Collins

Timothy S. Collins 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).

  • Systems and methods for controlling a switching device for an electric motor with selective flux stator
    Patent number: 11949354
    Abstract: A system comprising a synchronous three-phase electric motor and a controller is provided. The synchronous three-phase electric motor comprises a rotor, a stator, a plurality of coils, and a plurality of switching devices. The plurality of coils formed from conductive windings each wound around one or more of a plurality of stator teeth of the stator. The plurality of coils comprises a plurality of permanent coils and a plurality of bypass coils. The plurality of switching devices configured to selectively switch between a tapped position and a primary position. The controller is configured to provide a first switching command to the plurality of switching devices to switch from the primary position to the tapped position based on a transition signal. The transition signal is based on comparing an electrical characteristic associated with one or more input currents to the plurality of switching devices with a threshold value.
    Type: Grant
    Filed: February 7, 2022
    Date of Patent: April 2, 2024
    Assignee: ABB Schweiz AG
    Inventors: Frederick L. Hoadley, Hoat V. Phung, Timothy S. Collins, Robert F. McElveen, Jr.
  • Systems and Methods for Controlling a Switching Device for an Electric Motor with Selective Flux Stator
    Publication number: 20230253901
    Abstract: A system comprising a synchronous three-phase electric motor and a controller is provided. The synchronous three-phase electric motor comprises a rotor, a stator, a plurality of coils, and a plurality of switching devices. The plurality of coils formed from conductive windings each wound around one or more of a plurality of stator teeth of the stator. The plurality of coils comprises a plurality of permanent coils and a plurality of bypass coils. The plurality of switching devices configured to selectively switch between a tapped position and a primary position. The controller is configured to provide a first switching command to the plurality of switching devices to switch from the primary position to the tapped position based on a transition signal. The transition signal is based on comparing an electrical characteristic associated with one or more input currents to the plurality of switching devices with a threshold value.
    Type: Application
    Filed: February 7, 2022
    Publication date: August 10, 2023
    Applicant: ABB Schweiz AG
    Inventors: Frederick L. Hoadley, Hoat V. Phung, Timothy S. Collins, Robert F. McElveen, JR.
  • Method for efficient public key based certification for mobile and desktop environments
    Publication number: 20020038420
    Abstract: A method for forming a certificate is provided. Generally, a first public key of a first encryption type is placed in the certificate. A second public key of a second encryption type is also placed in the certificate.
    Type: Application
    Filed: April 10, 2001
    Publication date: March 28, 2002
    Inventors: Timothy S. Collins, Chin Ming Kuo