Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc.
Patent
1987-04-15
1989-02-28
Smith, Gary L.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
411399, 4034081, 217 65, 52217, F16B 3500
Patent
active
048080519
ABSTRACT:
A screw, particularly a wood screw, has a screw shank that consists of a first section which is provided with a thread and extends to the one end of the screw and of a second section without thread which terminates in a screw head. At least one annular projection, arranged concentric to the axis of the screw shank, is provided on said second section of the shank.
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patent: 2016610 (1935-10-01), Moeller
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patent: 3987698 (1976-10-01), Rabe
patent: 4096901 (1978-06-01), Reichenbach
patent: 4486134 (1984-12-01), White
Lindsey Rodney M.
Smith Gary L.
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