Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Impact driven fastener – e.g. – nail – spike – tack – etc. – Multiple prong – e.g. – nailing plate – staple – etc.
Patent
1986-11-07
1988-10-25
Gall, Lloyd A.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Impact driven fastener, e.g., nail, spike, tack, etc.
Multiple prong, e.g., nailing plate, staple, etc.
411473, 411920, F16B 1502
Patent
active
047800380
ABSTRACT:
A clamp with a U-shaped head and nail-like legs is provided with embossments pressed out of the material in that portion of the head which is in alignment with the nail-like leg, the embossments protruding to at least the height of the top of the U-shaped head.
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patent: 2885168 (1959-05-01), Silverman
patent: 2885169 (1959-05-01), Thiel
patent: 2887004 (1959-05-01), Stewart
patent: 3117758 (1964-01-01), Bauer
patent: 3154999 (1964-11-01), Stewart
patent: 3279300 (1966-10-01), Larson
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