18960839. THREADED FASTENER (Illinois Tool Works Inc.)
THREADED FASTENER
Organization Name
Inventor(s)
Victor Truong of Chicago IL (US)
Michael C. Dill of Elk Grove Village IL (US)
Yongping Gong of Wilmette IL (US)
Mark D. Latz of Oak Forest IL (US)
THREADED FASTENER
This abstract first appeared for US patent application 18960839 titled 'THREADED FASTENER
Original Abstract Submitted
Various embodiments provide a fastener including a head, a shank connected to the head and having a tip, one or more helical thread formations extending outwardly from the shank, and wherein a bottom portion of the head includes a plurality of ribs that extend towards the tip of the shank and that are shaped to abruptly frictionally engage a surface of a first object being attached to a second object to create an immediate frictional torsional resistance of a desired force level to the tightening of the fastener. This frictional resistance is provided back to the tightening tool to inform the operator of the tightening tool that the head of the fastener has sufficiently engaged the first object and that further tightening or clockwise rotation of the fastener is unnecessary.