Patents by Inventor Randal L. Keefer

Randal L. Keefer 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).

  • Auger telescoping hoist assembly and holding fork mechanism
    Patent number: 5695016
    Abstract: A telescoping hoist assembly and holding fork mechanism for an augering apparatus comprising a telescoping hoist arm with independently operating lift capability to lift auger flights to add them to or remove them from a string driving a cutting head for augering operations and a fork ram mechanism moveable horizontally and vertically within the augering apparatus to assist in the positioning of auger flights in their addition to or removal from the string.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: December 9, 1997
    Assignee: Brydet Development Corp.
    Inventors: Ronald C. Deeter, Randal L. Keefer