Patents by Inventor Larry G. Null

Larry G. Null 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).

  • Brake system for drawworks
    Patent number: 4696377
    Abstract: A brake system for a drawworks includes a hydraulically actuated band brake system having a backup spring actuator for emergency stops. The system also includes a caliper disc brake system for emergency stops. The disc brake system includes a rotor directly mounted to the drum barrel and a pair of spring actuated caliper assemblies.
    Type: Grant
    Filed: September 27, 1985
    Date of Patent: September 29, 1987
    Assignee: LTV Energy Products Company
    Inventors: Eugene M. Richardson, Norbert O. Brehm, Larry G. Null