Patents by Inventor Steven Donald Spencer

Steven Donald Spencer 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).

  • Publication number: 20240410134
    Abstract: A mechanical swing brake variable control system for an earth-moving machine including an upper revolving car body with swing components mounted on the upper revolving car body, a lower traveling car body with traction components mounted on the lower traveling car body, and a mechanical service brake interconnected with the upper and lower car bodies, controls relative rotation between the upper and lower car bodies. A pressure control device controls a variable pressure applied to the mechanical service brake to vary an amount of swing drive holding torque. An electronic controller monitors and processes signals received from sensors associated with the swing components and machine operator commands, and variably controls the amount of holding torque exerted on the upper revolving car body using the mechanical service brake as a function of one or more of machine roll angle, operational configuration of the swing components, inertial mass of the swing components, and machine operator commands.
    Type: Application
    Filed: June 9, 2023
    Publication date: December 12, 2024
    Applicant: CATERPILLAR INC.
    Inventors: Christopher Michael Ruemelin, Adam Martin Nackers, Santosh Ram Ancha, Rustin Glenn Metzger, Steven Donald Spencer