Electric driver with torque-adjustable clutch mechanism

Details Electric driver with torque-adjustable clutch mechanism Electric driver with torque-adjustable clutch mechanism

1986-05-14

1988-01-26

Bell, Paul A.

Tool driving or impacting

Automatic control of power operated means

Tool advance causing or controlling means

81469, B23Q 500

Patent

active

047211695

ABSTRACT:
Disclosed is an electric driver which is capable of freely controlling the rotational speed of a motor or a bit. The electric driver comprises a transmission mechanism provided between a drive shaft of the motor and the bit, and the transmission mechanism includes a clutch device operated to release the bit from a driven connection with the drive shaft when a transmission torque from the drive shaft to the bit exceeds a predetermined value. The clutch device has an elastic member and the predetermined torque value is adjustable by means of the elastic member.

REFERENCES:
patent: 3892146 (1975-07-01), Yasoshima
patent: 4265320 (1981-05-01), Tanaka et al.
patent: 4418765 (1983-12-01), Mori et al.
patent: 4617843 (1986-10-01), Nishida et al.

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