Rotary woodworking machine
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United States of America Patent
Stats
-
Aug 17, 2004
Grant Date -
Dec 18, 2003
app pub date -
Aug 7, 2002
filing date -
Jun 13, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotary woodworking machine includes a longitudinally extending transmitting shaft having two ends respectively coupled to two rotary woodworking members. A speed ratio varying device is disposed to couple the transmitting shaft to an output shaft of a motor, and includes two pitch-variable first and second pulleys mounted on the transmitting shaft and the output shaft, a belt trained on the pulleys, and a control unit operable to move a movable disc of the first pulley toward or away from a fixed disc of the first pulley so as to vary the radial distances between the belt and each of the shafts, thereby varying the speed ratio of the transmitting shaft to the output shaft.
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