Earpiece-less eyeglass apparatus and strap attachment mechanism
US9229245B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jun 12, 2014 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Aug 26, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T24/1371
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An earpiece-less eyeglass apparatus and retainer-strap attachment mechanism. First and second attachment mechanisms are mounted on each side of a lenticular frame. Each attachment mechanism includes a stemball assembly, a socket housing, and a spring. The stemball assembly includes a shaft, a narrow neck, and a ball. The socket housing includes a primary socket, a secondary socket, and a narrow slot joining the primary and secondary sockets. The spring is mounted within the primary socket and the slot, and is shaped to form a rounded portion within the primary socket and a narrow restriction portion within the slot for receiving, respectively, the ball and the neck of the stemball assembly. The narrow restriction portion locks the ball into the secondary socket without placing stress on the housing when the neck of the stemball assembly is slid through the slot, moving the ball into the secondary socket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.