Patents by Inventor Gregory Scott McDonald

Gregory Scott McDonald 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: 11535492
    Abstract: An overspeed safety braking mechanism for lift cars and elevator systems is described herein. The safety mechanism may comprise a safety kit secured to an overhead portion of a lift car, and configured to engage a cable to prevent a downward movement of the lift car. Engagement of the cable may occur when a threshold speed is reached. The overhead portion of the lift car is detachable upon a predetermined upward force resulting from an engagement of the safety cable from the safety kit. A primary brake system may be positioned beneath the safety kit, on or near a lift platform, configured to engage the safety cable in response to an activation of the safety kit and a detection of the threshold speed.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: December 27, 2022
    Assignee: Safeworks, LLC
    Inventors: David Arevalo Romo, Gregory Scott McDonald
  • Patent number: 11427437
    Abstract: An overspeed brake system is described to engage a safety cable and subsequent brake system once a threshold speed is reached. An overspeed safety kit may be installed on an elevator system or lift car, to identify a threshold speed and engage a brake lever to activate a braking system. One or more brake engagement devices may be applied to limit the force on the brake lever during a fall, thereby preventing potential damage to brake components, while cushioning the deceleration.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: August 30, 2022
    Assignee: SafeWorks, LLC
    Inventors: David Arevalo Romo, Gregory Scott McDonald
  • Publication number: 20200223664
    Abstract: An overspeed brake system is described to engage a safety cable and subsequent brake system once a threshold speed is reached. An overspeed safety kit may be installed on an elevator system or lift car, to identify a threshold speed and engage a brake lever to activate a braking system. One or more brake engagement devices may be applied to limit the force on the brake lever during a fall, thereby preventing potential damage to brake components, while cushioning the deceleration.
    Type: Application
    Filed: January 10, 2020
    Publication date: July 16, 2020
    Inventors: David Arevalo Romo, Gregory Scott McDonald
  • Publication number: 20200223666
    Abstract: An overspeed safety braking mechanism for lift cars and elevator systems is described herein. The safety mechanism may comprise a safety kit secured to an overhead portion of a lift car, and configured to engage a cable to prevent a downward movement of the lift car. Engagement of the cable may occur when a threshold speed is reached. The overhead portion of the lift car is detachable upon a predetermined upward force resulting from an engagement of the safety cable from the safety kit. A primary brake system may be positioned beneath the safety kit, on or near a lift platform, configured to engage the safety cable in response to an activation of the safety kit and a detection of the threshold speed.
    Type: Application
    Filed: January 10, 2020
    Publication date: July 16, 2020
    Inventors: David Arevalo Romo, Gregory Scott McDonald