One sided fastener device

Details One sided fastener device One sided fastener device

1976-02-23

1977-04-05

Frazier, Roy D.

85 1JP, F16B 1304

Patent

active

040155056

ABSTRACT:
A one sided or blind fastener assembly including a threaded fastener member inserted through a sleeve member having a tubular body, a head at the outer end thereof and a tapered inner end, and an expansion member including an internally threaded end portion adapted to be expanded as it is drawn up over the sleeve. Longitudinally extending ribs on the tapered end portion of the sleeve matingly engage longitudinally extending slots in the expansion member serving to confine the movement of the expansion member to an axial telescopic movement over the tapered sleeve portion. The upper edges of the expansion member are tapered inwardly toward the slots to enhance the clamping capabilities of the fastener.

REFERENCES:
patent: 2343283 (1944-03-01), Davis
patent: 2403330 (1946-07-01), Benton
patent: 2752814 (1956-07-01), Iaia
patent: 2783673 (1957-03-01), Lewis et al.
patent: 2971425 (1961-02-01), Blakeley
patent: 3267793 (1966-08-01), Devine et al.
patent: 3312139 (1967-04-01), Cristina

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