Manual tightened chuck
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United States of America Patent
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-
Jun 19, 2001
Grant Date -
N/A
app pub date -
Dec 17, 1999
filing date -
Mar 12, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A manually tightened chuck has a separated nut in (7) fixed in a recess at a front sleeve (10) with close fit, and jaws (9) engaged by respective thread part of each radial out surface with the nut, which enables to reciprocate synchronously within corresponding bores at a chuck body (1) by rotating the front sleeve, a rear sleeve (2) fixed with keys (11) around the periphery of rear part of the chuck body free from turning each other, a thrust ball bearing (6) and a spring (4) arranged between the front and rear sleeves act for separating the relative movement of the sleeves and applying a final gripping force after the jaws touch a drill bit.
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