Optimized elastic fastener useful in eyeglass frames

Details Optimized elastic fastener useful in eyeglass frames Optimized elastic fastener useful in eyeglass frames

1995-03-06

1996-12-17

Wilson, Neill R.

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

Headed fastener element with nut, washer, securing means or cap

Lap bolt or fastener

411353, 411517, 411909, F16B 2100, F16B 2118

Patent

active

055846319

ABSTRACT:
A fastener useful for attaching components of an eyeglass frame together. The fastener includes a pin having a smooth or fluted shank and a retainer having a hole for receiving the shank, the hole being sized to provide an interference fit with the shank. The retainer is made from a titanium nickel shape memory alloy in an optimized elastic condition. The optimized elastic condition is provided by work hardening a tube or wire of Ni--Ti and cutting the retainer out of the tube/wire. The retainer accommodates wear in moving parts held together by the retainer and pin assembly.

REFERENCES:
patent: 2230916 (1941-02-01), Tinnerman
patent: 3203302 (1965-08-01), Frederick
patent: 3367228 (1968-02-01), King, Jr.
patent: 3619478 (1971-11-01), Staiger
patent: 4450616 (1984-05-01), Morita
patent: 4624092 (1986-11-01), Baginski
patent: 4880343 (1989-11-01), Matsumoto
patent: 5224248 (1993-07-01), Brilliant

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