Patents Examined by M. Petravick
  • Directional multi-blade boring head
    Patent number: RE37450
    Abstract: Directional boring bits (1100, 1200) are disclosed which have at least one roller cone (1202, 1104) and also each define a deflecting surface (1104) for deflecting the boring bit when the bit is advanced without rotation. The borehole can be curved by pushing the bit forward without rotation.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: November 20, 2001
    Assignee: The Charles Machine Works, Inc.
    Inventors: Arthur D. Deken, Cody L. Sewell