Variable speed gearing in rotary electric tool
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United States of America Patent
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-
Sep 26, 1989
Grant Date -
N/A
app pub date -
Feb 9, 1988
filing date -
Mar 9, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A differential gear mechanism is mounted within a gear case fixed to a housing, an intermediate gear and a clutch mechanism are disposed on at least one output side, and a rotation changes for changing over the rotation of both output shafts between synchronous rotation and independent rotation according to increase or decrease in load relative to a present torque value.
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