Pushbutton switch
US5661279A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1995 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Dec 5, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/008
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A pushbutton switch which is based on a printed-wiring board equipped with a light source and a keypad that is arranged above the printed-wiring board. The pushbutton switch has a non-working portion and a working portion made of transparent silicone rubber or a transparent thermoplastic elastomer, wherein the upper surfaces of the non-working portions, excluding the working portions of the keypad, are covered with an opaque film, with the underside thereof being covered by an insulating film which forms an electrically conductive light-reflecting layer in which the electrically conductive light reflective layer is grounded by being connected to an earth portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.