Drill attachment for a surgical drill
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United States of America Patent
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-
Nov 30, 1999
Grant Date -
N/A
app pub date -
Sep 29, 1998
filing date -
Sep 29, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
A drill attachment (10) for decreasing the rotational speed/increasing the output torque of a cutting accessory (14) that is attached to a drill such as a surgical drill (10). The drill attachment has an input drive shaft (34) that is coupled to the drive shaft (16) of the drill to rotate in unison with the drill drive shaft. The input drive shaft rotates a set of axially fixed input planet gears (58). The input planet gears rotate a ring gear (66) that is fitted around the input planet gears. The ring gear rotates a set of axially fixed output planet gears (70). The planet gears rotate an output drive shaft (84). By the selective dimensioning of the drive shaft and gears the output speed/torque can be reduced and increased as desired.
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