Clutch for electric tool
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United States of America Patent
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Feb 13, 2018
Issued Date -
N/A
app pub date -
Feb 20, 2015
filing date -
Feb 20, 2015
priority date (Note) -
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Abstract
Embodiments of clutches for electric tools, and related methods, are disclosed herein. An electric tool may include an electric motor, a drive shaft coupled between the electric motor and a cutting instrument, and a clutch coupled between the electric motor and the drive shaft. The clutch may include a motor portion having an exterior surface, a drive shaft portion having an exterior surface and forming a mated assembly when mated with the motor portion, and a spring around the motor and drive shaft portions. The spring may exert a holding force on the mated assembly, such that rotation of the motor portion in a first direction loosens the spring and reduces the friction holding force until a torque between the motor and drive shaft portions exceeds the holding force, causing rotation of the motor portion to be decoupled from rotation of the drive shaft portion.
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