4. Expanded, threaded, driven, headed, tool-deformed, or locked-thr
  5. Headed fastener element with nut, washer, securing means or cap
  6. Cap over the head

David B. Speer

Inventor

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Fastener head with stabilizing ring

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Cap over the head
Patent

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Knurled fastener with cutting edges and removable head

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Impact driven fastener – e.g. – nail – spike – tack – etc. – Head having central recess
Reexamination Certificate

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Profile ID: LFUS-PAI-P-446728

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