Powered handpiece for dental or surgical use
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United States of America Patent
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N/A
Issued Date -
Aug 18, 2005
app pub date -
Jan 31, 2005
filing date -
Feb 17, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The handpiece (1) has a clamp (10) at the front, which is arranged to tightly grip the shank of a tool and is mounted in a hollow rotatable shaft (11). This is entrained by an electric motor (13), the shaft (12) of which is disposed in the extension of the hollow shaft (11), the adjacent ends of these two shafts being rotatably connected by a positive coupling (61). The adjacent ends of the two shafts (11, 12) are both supported by the same inner ring (63) of a central bearing (15). The coupling (61) is located inside said inner ring (63), in which the end of the shaft of the motor is slidingly mounted and is loaded axially by a spring (69).
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