Patents Assigned to Tommie Rogers
  • Pipe spinner
    Patent number: 4512216
    Abstract: A motor driven serpentine chain circulating device for spinning drill pipe into engagement for final tightening by other devices. Jaws are closed and locked to position chain for embracing pipe before the chain tension is applied. Chain tension does not depend upon exact positioning of the jaw closure. Optional sequencing system speeds operation.
    Type: Grant
    Filed: January 20, 1984
    Date of Patent: April 23, 1985
    Assignee: Tommie Rogers
    Inventors: Stephen R. Callegari, Sr., Tommie L. Rogers