F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 25/10 (2006.01) F16B 35/00 (2006.01)
Patent
CA 2389788
A threaded fastener has a substantially single helical thread formed upon a shank portion thereof, and a plurality of substantially saw-blade type or serrated teeth are formed upon crest portions of leading ones of individual thread portions of the helical thread. The saw-blade type or serrated teeth cut into side wall portions of any one of a multiplicity of substrates so as to substantially reduce re-quired insertion torque levels, render fastener insertion operations quicker, and enhance fastener pull-out resistance values.
Chen Chin-Tsai
Kram Guenther Reinhard
Finlayson & Singlehurst
Illinois Tool Works Inc.
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