Shade attachment for eyeglasses
US4953231A · kind A · utility
Inventor
Key dates
| Filing date | Jul 19, 1989 |
| Grant date | Sep 4, 1990 |
| Priority date | — |
| Expiry date | Jul 19, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C9/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A shade attachment for eyeglasses includes a frame defining a pair of openings dimensioned for registry with lenses of a pair of conventional eyeglasses. Top and bottom resilient clips are provided on the frame and are configured for frictional engagement with top and bottom edges of eyeglass lenses. A set of transverse slats are mounted on the frame and extend across the lens openings. The salts are mounted for movement between open and closed positions by a linear drive train including a plurality of driven gears secured to axle shafts of each of the slats. A plurality of idler gears are mounted for rotation on the frame between and in mesh with each adjacent pair of driven gears. A drive gear is mounted for rotation on the frame and in mesh with one of the driven gears. A control knob is provided for manually rotating the drive gear to simultaneously open or close all of the slats extending across one of the frame openings. In a second embodiment of the present invention, the shade mechanism is provided as an integral part of a pair of eyeglasses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.