High speed drill holders
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United States of America Patent
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-
Sep 3, 2002
Grant Date -
Dec 13, 2001
app pub date -
Jul 25, 2001
filing date -
Jan 26, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A collet for carrying a high-speed drill which comprises a collar (2) arranged to enclose a drill shank (1), an outer rim support (8) arranged for attachment to a drill, and a clamping mechanism between the collar and the outer rim support (8). The clamping mechanism is arranged to provide clamping forces between said outer rim support (8) and said collar so that said collar tightly grips a drill shank (1), as a consequence of centrifugal forces and of off center sprag effect forces.
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