B - Operations – Transporting – 25 – B
Patent
B - Operations, Transporting
25
B
81/23, 341/108.1
B25B 23/145 (2006.01) B23P 19/06 (2006.01) B25B 23/14 (2006.01)
Patent
CA 1166722
SIMPLIFIED FASTENING TECHNIQUE USING THE LOGARITHMIC RATE METHOD Abstract of the Disclosure A fastening tool, which is preferably portable, incorporates torque and angle sensors connected to an analog calculating circuit which determines, while tightening below the yield point of any component of the joint being tightened, a final shut off parameter which varies from joint to joint while tightening seriatim a plurality of substantially identical joints. The logarithimic rate method is used to determine the final shut off parameter. In accordance with one embodiment of the invention, a simplification occurs by the measurement of an angle interval occurring between two predetermined torque values. In accordance with another embodiment of the invention, a simplification occurs by measuring the torque value existing at a predetermined angle interval beyond a first predetermined torque level.
380306
Rockwell International Corporation
Smart & Biggar
LandOfFree
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