Optimized elastic fastener useful in eyeglass frames
US5584631A · kind A · utility
8Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1995 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Mar 6, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S411/909
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.