Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Headed bolt or screw with threads and complementary nut
Patent
1992-05-19
1993-09-14
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Headed bolt or screw with threads and complementary nut
411180, 411339, F16B 2100, F16B 3500, F16B 3704
Patent
active
052443264
ABSTRACT:
A fastener assembly including a first fastener member adapted to be inserted into a first structural component. The first fastener member includes a head portion and a generally cylindrical shank portion extending from the head portion. The fastener assembly also includes a second fastener member having a head portion and a shank portion extending therefrom. The first and second fastener members include respective internally and externally threaded portions that interengage to secure the fastener members together. One of the fastener members is provided with anti-rotation structure that prevents rotational movement of the fastener members with respect to the structural components, while permitting non-destructive axial removal of the fastener members from the structural components. In a preferred embodiment, the anti-rotational structure is provided as a plurality of longitudinal ridges disposed on an outer surface of the shank portion of one of the fastener members. The longitudinal ridges extend along the shank portion in a direction generally parallel to the longitudinal axis of the shank portion. Each of the ridges may be triangular in cross section. The head portions or shank portions of either or both of the fastener members may be coated with a micro-encapsulated locking material.
REFERENCES:
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patent: 4490083 (1984-12-01), Rebish
patent: 5000636 (1991-03-01), Wallace
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