B - Operations – Transporting – 25 – B
Patent
B - Operations, Transporting
25
B
81/23
B25B 21/00 (2006.01) B25B 23/147 (2006.01)
Patent
CA 1087885
TITLE OF THE INVENTION ELECTRICALLY POWERED TORQUE-CONTROLLED TOOL ABSTRACT OF THE DISCLOSURE An electrically powered torque-controlled tool having an electric motor which rotates a bit, whereby a screw, bolt or nut fitted at the front and of the bit is tightened. The tool is designed so that when the tighten- ing force exerted by the bit reaches a preset torque, the driving by the electric motor is stopped by opening the switch and concurrently therewith a clutch interposed between the electric motor and the bit is disengaged and held in this released state, thereby avoiding the reaction which would otherwise be produced by the motor inertia immediately after the tightening, thus achieving a high- precision tightening operation.
302910
Hosokawa Shuji
Kato Michio
Nishida Yoshikazu
Tanaka Tamotsu
Uematsu Masataka
Kirby Eades Gale Baker
Matsushita Electric Industrial Co. Ltd.
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