Loosening-resistant threaded fastener system and method of use

Details Loosening-resistant threaded fastener system and method of use Loosening-resistant threaded fastener system and method of use

1998-09-18

1999-10-19

Wilson, Neill

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Torque responsive nut or bolt driving connection

Resilient connection

411 14, 411120, 411204, F16B 3100, F16B 3304

Patent

active

059677210

ABSTRACT:
A loosening-resistant threaded fastener system and method of use includes a washer that is axially movable on a threaded stud, a threaded nut having threads which cooperate with the threaded stud, and a washer anti-rotation mechanism to prevent the washer from rotating on the stud about a fastening axis. One of the washer and the nut may include a plurality of protrusions while the other of the washer and the nut has a plurality of detents. The protrusions and the detents engage one another at a plurality of angular positions. Rotating the nut on the stud while in contact with the washer results in distinct, audible clicks which may be counted to obtain a pre-determined tightness.

REFERENCES:
patent: 3273443 (1966-09-01), Rubin
patent: 3425314 (1969-02-01), Ohlson
patent: 4434736 (1984-03-01), Szostak et al.
patent: 5533849 (1996-07-01), Burdick
patent: 5606753 (1997-03-01), Hashimoto

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