Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Separate head element
Patent
1999-11-30
2000-06-20
Wilson, Neill
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
Separate head element
411169, 411400, 470 13, F16B 2300, F16B 3506
Patent
active
060770147
ABSTRACT:
A bolt and restraining clip assembly are formed by providing a raised square portion on the head of the bolt on the side of the head away from the threaded end of the bolt. A clip with a mating square hole is mounted on the raised square portion, and an additional central protrusion extending outwardly from the raised square portion is impacted, for example in a punch press, to form a boss extending outwardly over the hole in the clip to firmly secure the clip to the bolt.
REFERENCES:
patent: 362274 (1887-05-01), Hall
patent: 2246457 (1941-06-01), Schultz
patent: 3362449 (1968-01-01), Barwick et al.
patent: 4974274 (1990-12-01), Compton et al.
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