Patents by Inventor Tim Lien

Tim Lien 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).

  • Pulse width modulation drive and method for ornaments with movable components
    Patent number: 7247076
    Abstract: A decoration device may include a low-friction drive line and a PWM controlled motor that reduces or eliminates the gearing needed to achieve appropriate speed and torque at the motor output shaft. In preferred embodiments, the decoration device is an ornament that includes a low friction interfaces to accommodate relatively low torque output from the PWM drive motor. In certain embodiments, the PWM controller drives a motor at low speeds suitable for ornament applications.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: July 24, 2007
    Assignee: Hallmark Cards, Incorporated
    Inventors: Phu Dang, Tim Lien
  • Pulse Width Modulation Drive and Method for Ornaments with Moveable Components
    Publication number: 20070137075
    Abstract: A decoration device may include a low-friction drive line and a PWM controlled motor that reduces or eliminates the gearing needed to achieve appropriate speed and torque at the motor output shaft. In preferred embodiments, the decoration device is an ornament that includes a low friction interfaces to accommodate relatively low torque output from the PWM drive motor. In certain embodiments, the PWM controller drives a motor at low speeds suitable for ornament applications.
    Type: Application
    Filed: February 16, 2007
    Publication date: June 21, 2007
    Applicant: HALLMARK CARDS, INCORPORATED
    Inventors: Phu Dang, Tim Lien
  • PULSE WIDTH MODULATION DRIVE AND METHOD FOR ORNAMENTS WITH MOVABLE COMPONENTS
    Publication number: 20070086755
    Abstract: A decoration device may include a low-friction drive line and a PWM controlled motor that reduces or eliminates the gearing needed to achieve appropriate speed and torque at the motor output shaft. In preferred embodiments, the decoration device is an ornament that includes a low friction interfaces to accommodate relatively low torque output from the PWM drive motor. In certain embodiments, the PWM controller drives a motor at low speeds suitable for ornament applications.
    Type: Application
    Filed: October 14, 2005
    Publication date: April 19, 2007
    Inventors: Phu Dang, Tim Lien