Fastener driver head and tool and coupling therebetween

Details Fastener driver head and tool and coupling therebetween Fastener driver head and tool and coupling therebetween

1981-07-30

1984-02-07

Shedd, Wayne L.

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

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

Head driving structure

403359, 411409, 411910, 81 90C, 81121R, 440 64, F16B 2300

Patent

active

044300352

ABSTRACT:
A coupling arrangement includes a fastener driver head and a mating tool drive socket. The fastener driver head comprises a substantially circular disc-shaped base portion, a plurality of frustoconical portions integrally formed with the base portion and concentrically located within one surface thereof. A plurality of ribs are integrally formed with the base portion and alternating with the frustoconical portions and extend axially outwardly of both the base portion and the frustoconical portions. Each of the ribs extends from a line parallel with and spaced above a given diameter of the base portion to an outer periphery of said base portion. A mating drive tool has a recessed driving head or socket substantially complementary with the fastener head for closely interfitting engagement therewith.

REFERENCES:
patent: 2715325 (1955-08-01), DuPont

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