Vibration resistant fastener

Details Vibration resistant fastener Vibration resistant fastener

1974-05-17

1976-08-03

Frazier, Roy D.

Brushing, scrubbing, and general cleaning

151 37, F16B 3930

Patent

active

039723607

ABSTRACT:
A vibration resistant threaded fastener which may be a set screw or any other type of threaded fastener wherein the load bearing flank of the threaded surface of the screw is provided with a series of serrations. Each serration is formed with an inclined ramp terminating in a buttress with the ramp surface being inclined in the direction of tightening the fastener so that the buttress presents a surface tending to act against rotation of the fastener to preclude loosening of the fastener. Upon engagement in a workpiece under compressive load the buttress of the serrations coact with the thread flank of the mating internal thread in a workpiece to preclude disengagement of the fastener. In one embodiment of the fastener bearing pads are provided to limit the degree of coaction between the serrations and the thread flank of the workpiece.

REFERENCES:
patent: 1933332 (1933-10-01), May
patent: 2959204 (1960-11-01), Rigot
patent: 3078899 (1963-02-01), MacLean et al.
patent: 3176746 (1965-04-01), Walton
patent: 3339389 (1967-09-01), Mosow
patent: 3825051 (1974-07-01), Sigmund

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