G - Physics – 05 – D
Patent
G - Physics
05
D
341/108.1
G05D 15/01 (2006.01) B25B 21/00 (2006.01) B25B 23/145 (2006.01) G05D 17/02 (2006.01)
Patent
CA 1049119
MULTI-STAGE TIGHTENING SYSTEM ABSTRACT A sequential tightening system is disclosed in this application for tightening a plurality of fasteners to a final predetermined condition and includes a plurality of wrenches for tightening the fasteners and a control system operatively associated with each of said wrenches for tightening the fasteners to a first predetermined condition, preferably their seated condition and at a relatively high output speed of the wrenches, and temporarily discontinuing the tightening pro- cedure. When the tightening procedure of all of the wrenches has been temporarily discontinued, the control means restarts the tightening procedure of each wrench simultaneously or, if desired, sequentially, and, preferably at a lower output speed of the wrenches. As each wrench tightens its operatively engaged fastener to the final predetermined condition, the control means discontinues the tightening procedure of that wrench.
235661
Aspers Arthur J.
Finkelston Robert J.
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