Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Torque responsive nut or bolt driving connection – Frangible connection
Patent
1993-02-22
1994-02-01
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Torque responsive nut or bolt driving connection
Frangible connection
411 14, 411311, 295251, F16B 3100, F16B 3304, F16B 3930
Patent
active
052827070
ABSTRACT:
The present invention relates to a fastening system comprising a nut with a locking threadform and a nut driving system which visually marks the locking nut when the proper torque is reached. The locking nut with a locking threadform has been designed so that the major diameter thread of a typical bolt will engage a wedge ramp portion of the nut threadform thereby resisting unintentional loosening. The nut driving system of the present invention comprises a wrench socket wherein the socket contains a ball set; when the socket is used to tighten the locking nut, it visually marks the nut head when the proper torque is reached.
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Machinery's Handbook, by Erik Oberg, Franklin D. Jones and Holbrook L. Horton, 20th Ed., Second Printing, 1976, pp. 1274-1279, 1282-1285, 1290-1295, 1342-1343, 1360-1361 and 1218-1229.
Detroit Tool Industries Corporation
Wilson Neill R.
LandOfFree
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