Laminated internally threaded fastener

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Internally threaded fastener element – e.g. – nut – etc. – Multipart

Patent

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Details

411433, 411527, F16B 3708, F16B 2118

Patent

active

057854777

ABSTRACT:
An internally threaded fastener assembled from formed laminae can be inexpensively and efficiently produced from a variety of materials in a multi-staged, die-operated, drawing press. Each lamina has an internal bore with less than one full thread form at the helix plane and is designed to be stacked in an aligned, alternating arrangement to provide full thread rotations along the interior of the assembled fastener.

REFERENCES:
patent: 2244823 (1941-06-01), Burke
patent: 2318708 (1943-05-01), Parr
patent: 2581641 (1952-01-01), Forgaard
patent: 3233262 (1966-02-01), Vollman
patent: 4383787 (1983-05-01), Reynolds
patent: 4900209 (1990-02-01), Reynolds

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