Illumination devices for watches and other instruments
US6729738B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2002 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | May 3, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/857
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A UV emitter is incorporated into a variety of different illumination devices suitable for illuminating indicia associated with dials on watches, gauges and other instruments, as well as ornaments. The indicia is made of a material responsive to UV emissions to render the indicia visible. The devices may be used in motor vehicles and other devices. In addition, a conductor arrangement is also provided that can be used to support the UV emitter under the transparent cover of watches or gauges, with the UV emitter oriented to direct the UV emissions toward the indicia. Embodiments are presented for UV emitters on top of dials with indicia, laterally from the dials, or even under the dials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.