Screw having an improved head structure

Details Screw having an improved head structure Screw having an improved head structure

1996-07-30

1997-10-07

Wilson, Neill R.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Externally threaded fastener element, e.g., bolt, screw, etc.

Head driving structure

411404, 411919, F16B 2300, F16B 3506

Patent

active

056740379

ABSTRACT:
A screw includes a head and a shank which extends from one side of the head, a substantially cubic recess defined by four sides in the other side of the head, each of the four sides having a short slot perpendicularly outwardly extending therefrom and each of the four short slots communicating with the cubic recess.

REFERENCES:
patent: 1910182 (1933-05-01), Robertson
patent: 3329057 (1967-07-01), Salz
patent: 4089357 (1978-05-01), Gill
patent: 5020954 (1991-06-01), Dreger
patent: 5214987 (1993-06-01), Fenton, Sr.
patent: 5358368 (1994-10-01), Conlan et al.

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