Self-retaining means for fasteners particularly screws

Details Self-retaining means for fasteners particularly screws Self-retaining means for fasteners particularly screws

1994-11-04

1996-07-02

Wilson, Neill R.

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

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

Head having counter-sinking means

411107, 411533, 411999, F16B 2300, F16B 3900

Patent

active

055315542

ABSTRACT:
A fastener for insertion through aligned holes of two components to be secured to one another by the fastener. The fastener includes a shaft portion having an end; a fastener head disposed at said end; and a retaining arrangement for maintaining the fastener captive by the components. The retaining arrangement includes a conical collar situated between the shaft portion and the fastener head. Further, the conical collar surrounds the axis and has a maximum diameter base oriented toward the fastener head. The conical collar is provided with radial recesses. The retaining arrangement also has a neck part surrounding the shaft axis and disposed between the fastener head and the conical collar.

REFERENCES:
patent: 3782437 (1974-01-01), Seckerson
patent: 3789725 (1974-02-01), Lindstrom
patent: 4274460 (1981-06-01), Egner
patent: 4509890 (1985-04-01), Hill
patent: 4652018 (1987-03-01), Boghosian

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