Power tool safety clutch

Details Power tool safety clutch Power tool safety clutch

1978-10-10

1980-12-16

Downey, Kenneth

192 clutches and power-stop control

Clutches

Operators

192 56C, 192 89W, 192 26, F16D 4320

Patent

active

042390966

ABSTRACT:
A devise for sensing sudden abnormal movement of a power operated tool, such as a hand held circular saw or drill. The device, comprising a wrap spring clutch and an inertia sensing means, further rapidly declutches the tool drive in response to the abnormal movement. The declutching reduces the severity of movement where it is power induced and renders the output drive inoperative to improve operator safety. The tool must be positively reset to accomplish further operation.

REFERENCES:
patent: 2513798 (1950-07-01), Hatfield
patent: 2829748 (1958-04-01), Sacchini et al.
patent: 2994418 (1961-08-01), Floyd et al.
patent: 3521730 (1970-07-01), Weatherby

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