Illuminated keypad key and method of manufacture thereof
US6084190A · kind A · utility
41Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 14, 1998 |
| Grant date | Jul 4, 2000 |
| Priority date | — |
| Expiry date | Jan 14, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2227/002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illuminated keypad key and method of manufacture thereof, having a light-permeable resin key top, a film having a pattern formed in one side thereof, the film being fixed to the upper and side surfaces of the transparent resin key top, cutting away portions of the film that extend beyond the lower periphery of the key top, and upper surface of a key operating portion made from transparent rubber or thermoplastic elastomer, being fixed to the underside surface of the key top by means of a transparent adhesive. The above mentioned film has a thickness of 100 mm-200 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.