Locking device for output shaft of electric tools
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United States of America Patent
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-
Sep 24, 2002
Grant Date -
N/A
app pub date -
Jan 29, 2002
filing date -
Jan 29, 2002
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A locking device for output shaft of electric tools includes a plurality of brake pads arranged as a circle in a passage in a casing and the brake pads can be limited by a driving disk to co-rotate with a cam mounted on an output shaft. When the output shaft is rotated manually, the brake pads are pushed by the cam and contact the inside of the passage so as to secure the output shaft to output a torque. The driving disk has a hole wherein two hill portions extend from two opposite sides of the hole. The output shaft extends through the hole. A cover plate is mounted to the driving disk and has an aperture whose two opposite sides are located alignment with the two opposite sides of the hole in the driving disk. The driving disk has pawls on a surface thereof and limit the brake pads not to contact the inside of the passage.
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