Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Multipart
Patent
1991-01-31
1992-02-25
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
Multipart
411 65, 411354, 411901, 411908, F16B 1900, F16B 3502
Patent
active
050908570
ABSTRACT:
A metallic threaded composite fastener, particularly suited for high temperature applications, has a body member made of high temperature-resistant composite material with a ceramic coating. The body member has a head portion configured to be installed in a countersunk hole and a shank portion which is non-circular and tapered. One part of the shank may be non-circular and the other part tapered, or the two types of surfaces could be combined into a frustum of a non-circular cone. A split collar member made of high strength, high temperature-tolerant metal alloy is split into two halves and the interior of the halves are configured to engage the shank. The exterior of the collar has external threads and the upper portion of the collar has a circumferential groove which receives a lock ring to secure the collar halves to the shank. In the assembled condition torque may be transmitted from the body to the split collar by the engaged non-circular portions to install and remove the fastener assembly into or from a threaded aperture and shear loads in the collar threads are transferred to the shank tapered portion as a combination of radial compression and axial tension loads. Thus, tension loads may be applied to the fastener shank without damaging the ceramic coating.
REFERENCES:
patent: 2388273 (1945-11-01), Lord
patent: 3074746 (1963-01-01), Shames et al.
patent: 3159075 (1964-12-01), Bjork
patent: 4126338 (1978-11-01), Coel et al.
patent: 4486134 (1984-12-01), White
patent: 4687395 (1987-08-01), Berecz et al.
patent: 4687397 (1987-08-01), Berecz
patent: 4718801 (1988-01-01), Berecz
patent: 4861211 (1989-08-01), Dunsmore
patent: 4863330 (1989-09-01), Olez et al.
patent: 4975014 (1990-12-01), Rufin et al.
patent: 5007781 (1991-04-01), Jensen et al.
Fein Edward K.
Manning John R.
Schlorff Russell E.
The United States of America as represented by the Administrator
Wilson Neill R.
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