Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Head driving structure
Patent
1990-11-21
1991-12-24
Lindsey, Rodney M.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
Head driving structure
411103, 411374, F16B 2300
Patent
active
050747304
ABSTRACT:
A fastener assembly including a bolt having an enlarged head at one end and a nose at the other end. The bolt is threaded for threaded engagement to the stud of a receptacle assembly. The head of the bolt has a countersunk opening configured to a tool for rotating the same. This opening includes a spring biased releasable plug which is moved downwardly upon insertion of the tool to permit rotation thereof, then returns to a position flush with the exterior of the head of the bolt surrounding the opening. An adjusting screw is threaded into a mating threaded hole in the plug for adjusting the same so that the upper surface of the plug is flush with the upper surface of the bolt head.
REFERENCES:
patent: 2101938 (1937-12-01), Giberson
patent: 2133409 (1938-10-01), Webb
patent: 2555197 (1951-05-01), Lasky
patent: 3405595 (1968-10-01), Peterson
patent: 3785670 (1974-01-01), Smith
patent: 4822227 (1989-04-01), Duran
patent: 5017069 (1991-05-01), Stencel
Avibank Mfg. Inc.
Lindsey Rodney M.
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