Decorative and protective cap for locknut

Details Decorative and protective cap for locknut Decorative and protective cap for locknut

1990-01-16

1990-11-06

Wilson, Neill R.

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

Internally threaded fastener element, e.g., nut, etc.

Having cap

411372, 411377, 411910, F16B 3714

Patent

active

049682024

ABSTRACT:
A capped nut including a metal nut body, first threads on the outside of the metal nut body, a cap including a metallic shell and a non-metallic insert, dimples in the shell, a shoulder on the insert in contiguous relationship to the dimples for preventing the insert from being removed from the shell, second threads on the insert for mounting on the first threads of the metal nut body, and a rachet arrangement between the insert and the dimples for permitting the shell to override the insert when a turning force is applied to the shell which tends to overtighten the second threads on the insert with the first threads on the nut body but which provides positive engagement between the shell and the insert when a force is applied to the shell for unthreading the cap from the nut body.

REFERENCES:
patent: 1397235 (1921-11-01), Sabel
patent: 3485134 (1969-12-01), Ott
patent: 4659273 (1987-04-01), Dudley
patent: 4710082 (1987-12-01), Curtis
patent: 4723866 (1988-02-01), McCauley
patent: 4824305 (1989-04-01), McCauley

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