Nasion-secured sport glasses
US4953967A · kind A · utility
Inventor
Key dates
| Filing date | May 31, 1989 |
| Grant date | Sep 4, 1990 |
| Priority date | — |
| Expiry date | May 31, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C5/12
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An ophthalmic device for use, in particular, in vigorous sporting activities, comprises a pair of lenses (11) mounted in a frame front (10), and held in position on the wearer's face by an adjustable flexible band (18). The band (18) is secured to the frame front (10) by lugs (16 L & R), mounted inside the frame front and perpendicular to the plane of the lenses (11). These lugs (16) are in horizontal alignment with a nasion protrusion (14) that is integral to a nose rest piece (12). The nose rest piece (12) is of a flexible material and is secured between the lenses (11) at the bridge area of the frame front (10). These glasses cannot fall from the wearer's face, and provide a no-slip, no-pitch, no-yaw fit. The glasses are extremely comfortable to wear for long periods of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.