Electric tool with torque monitor

Details Electric tool with torque monitor Electric tool with torque monitor

1982-10-26

1985-08-13

Schran, Donald R.

Tool driving or impacting

Automatic control of power operated means

Tool advance causing or controlling means

173 1, 7386229, 338114, B23Q 1700

Patent

active

045344205

ABSTRACT:
An electric tool, especially a hand tool, is provided with a torque monitor. For this purpose the support bearings taking up the reaction torque of the electric motor in the housing of the tool are equipped with pressure sensors in the form of conductive plastic material, the electric resistance of which changes as a function of the pressure exerted.

REFERENCES:
patent: 3386067 (1968-05-01), Costanzo
patent: 3832897 (1974-10-01), Schenck
patent: 4089216 (1978-05-01), Elias
patent: 4188821 (1980-02-01), Elias
patent: 4384493 (1983-05-01), Grunbaum

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