Patent ID: 7073797
Filing Date: 2006-07-11
Classification: B23B,F16D,Y10T

Abstract:
1. A tool holder for quick mounting and dismounting an annular core bit ( 2 ), comprising a guide member ( 4 ) provided at a bit-side end of the tool holder ( 1 ); a hollow, freely rotatable flange ( 3 ) arranged coaxially with the guide member ( 4 ) for axially locking same and having an inner thread; an outer cone surface ( 6 ) located inwardly of the guide member ( 4 ) coaxially therewith and axially spaced therefrom, the outer cone surface ( 6 ) tapering toward the bit-side end of the tool holder ( 1 ) for guiding a core bit shank; and torque transmitting means ( 5 ) arranged between the guide member ( 4 ) and the outer cone surface ( 6 ).