ApplicationNo. 573660 filed on 05/01/1975
US Classes:384/29, Cylindrical outer race175/220WITH ABOVE-GROUND GUIDE FOR RELATIVELY ADVANCING TOOL
ExaminersPrimary: Wood, M. H. Jr.
Assistant: Church, Gene A.
Attorney, Agent or Firm
AbstractA drill steel idler guide having an internal sleeve rotatably supported in a base by means of ball bearings fitting in opposed annular grooves in the sleeve and base, said sleeve having a bore through which a drill steel can slidably fit. Means is provided for directing pressure air through the base and into an annular space between the base and the sleeve.