Safety clutch for motor-operated hand tool

Details Safety clutch for motor-operated hand tool Safety clutch for motor-operated hand tool

1989-06-27

1990-11-06

Lorence, Richard

192 clutches and power-stop control

Clutches

Torque responsive

192150, 464 35, 173 12, 81474, F16D 710, B25B 23157

Patent

active

049678884

ABSTRACT:
A safety clutch for a motor-driven hand tool breaks the rotational drive train when a working tool becomes seized in a receiving material. The safety clutch includes coupling members (25) positioned in a part (22) for transmitting rotational movement to the working tool. The coupling members (25) are radially displaceable within the part (22) between a first position rotatably connecting the part and a power take-off spindle (21) and a second position releasing the connection between the part and spindle. An annular inertial mass (28) rotates with and is rotatable relative to the part (22). The mass (28) has recesses (31) in its inner surface for receiving the coupling members (25) in the second position, and it has support surfaces for holding the coupling members (25) in connecting engagement in recesses (27) in the spindle in the first position.

REFERENCES:
patent: 4066136 (1978-01-01), Wanner et al.
patent: 4365962 (1982-12-01), Regelsberger
patent: 4386689 (1983-06-01), Kato

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