Self-retained fastener

Details Self-retained fastener Self-retained fastener

1976-06-22

1983-07-05

Kundrat, Andrew V.

Joints and connections

Articulated members

Pivoted

403316, 411352, F16B 4100

Patent

active

043915442

ABSTRACT:
A self-retained fastener including locking means provided near the end of the fastener first inserted through a hole in a workpiece wherein the locking means becomes operative after passing beyond the hole in the workpiece. The locking means comprises an annular groove near the end of the fastener having a configuration which increases radially outwardly from a point axially inwardly from the end of the fastener toward the end of the fastener. A spring ferrule member is engaged about the end of the fastener around the annular groove and includes a portion thereof which cooperates with the exterior surface of the workpiece and the annular groove on the fastener to oppose unintentional removal of the fastener from the workpiece once it has passed through the hole in the workpiece. The ferrule also serves as a removal tool for permitting removal of the fastener when desired.

REFERENCES:
patent: 636331 (1899-11-01), Glover
patent: 636332 (1899-11-01), Glover
patent: 1169693 (1916-01-01), Swedlund
patent: 1588908 (1926-06-01), Reynolds
patent: 2594239 (1952-04-01), Weiss
patent: 3812756 (1974-05-01), Wenger

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