Chucks or sockets – Longitudinal screw clamp
Reexamination Certificate
2006-07-11
2006-07-11
Gay, Jennifer H. (Department: 3672)
Chucks or sockets
Longitudinal screw clamp
C408S23900A, C403S359300, C403S359500, C175S403000
Reexamination Certificate
active
07073797
ABSTRACT:
A tool holder (1) and a shank (8) for quick mounting and dismounting an annular core bit (2) both include cooperating respective guide members (4, 4′) provided at their bit-side ends, flanges (3, 9) arranged coaxially with the guide members (4, 4′) for axially locking same and having, respectively, outer and inner threads, and outer and inner cone surfaces (6, 10) located inwardly of the respective guide members (4, 4′) and axially spaced therefrom. The outer and inner cone surfaces (6, 10) taper toward their respective bit-side ends. The tool holder and the shank have cooperating torque transmitting elements (5, 5′) arranged between the respective inner guide members (4, 4′) and the respective outer cone surfaces (6, 10).
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Abelman ,Frayne & Schwab
Gay Jennifer H.
Hilti Aktiengesellschaft
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