Optimized elastic fastener useful in eyeglass frames
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United States of America Patent
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Dec 17, 1996
Issued Date -
N/A
app pub date -
Mar 6, 1995
filing date -
Mar 23, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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