Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Internally threaded fastener element – e.g. – nut – etc. – Having cap
Patent
1997-03-17
1998-05-12
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Internally threaded fastener element, e.g., nut, etc.
Having cap
411372, 411910, F16B 1900, F16B 3300, F16B 3714
Patent
active
057496900
ABSTRACT:
A non-removable screw nut fastener assembly for affixation to a threaded bolt member comprising a nut member with a round substantially smooth exterior surface having a peripheral snap ring groove, a cap member having one closed end and an interior surface having a peripheral snap ring groove, the cap member being of such size as to fit closely but loosely over the nut member when the nut is fastened to the bolt member substantially enclosing and prevent turning of the nut and a snap ring resting untensioned partly within each of the peripheral grooves to prevent removal of the cap member.
REFERENCES:
patent: 4302137 (1981-11-01), Hart
patent: 4690167 (1987-09-01), Skipper
patent: 4784555 (1988-11-01), Cantrell
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