Picture frame illumination apparatus
US5313724A · kind A · utility
Inventor
Key dates
| Filing date | Jul 12, 1991 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Jul 12, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2013/1845
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A picture frame is formed in a perimeter relationship relative to a central support plate. The picture frame includes a housing coextensively directed about the support plate, with the housing including a housing section associated with each side of the support plate. Each housing section includes an elongate cylindrical illumination bulb mounted therewithin. A transparent lens is positioned contiguous to and adjacent each edge of the central support plate coextensive with each illumination bulb to direct illumination onto the central support plate. A modification of the invention includes each elongate bulb formed with a plurality of semi-cylindrical coatings, including an opaque, translucent, and clear coating to provide a varying degree of illumination directed upon the central support plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.