Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Impact driven fastener – e.g. – nail – spike – tack – etc. – Including integral locking means
Patent
1989-09-29
1990-10-23
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Impact driven fastener, e.g., nail, spike, tack, etc.
Including integral locking means
411466, 411903, F16B 1500
Patent
active
049647741
ABSTRACT:
A metal fastener, suitable for use in wood construction and coated with a polymeric residue produced by removing water from an aqueous dispersion of a film-forming, thermoplastic, predominately aliphatic polyurethane resin, thereby to reduce penetration force, increase withdrawal force, and protect against corrosion. Before the polyurethane coating is applied, a zinc layer is applied so as to coat the fastener, and a chromate conversion layer is applied so as to coat the zinc layer.
REFERENCES:
patent: 3853606 (1974-12-01), Parkinson
patent: 4307000 (1981-12-01), Vasta
patent: 4837090 (1989-06-01), Hyner et al.
Gabriel Willaim L.
Lat Geronimo E.
Illinois Tool Works Inc.
Wilson Neill R.
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