Key top member for push button switch structure
US6621027B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2000 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | May 13, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2229/058
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A key top member for a push button switch structure capable of facilitating change and modification of a design while eliminating deformation and misregistration of a display section, being accommodated to a variety of data, being increased in design properties and visibility, and being reduced in manufacturing cost. An upper resin sheet made of thermoplastic resin and having display sections such as a letter, a symbol, a pattern or the like printed thereon is formed with projections having configurations conforming to outer configurations of key top elements. The projections are each securely provided therein with a filler member made of photo-setting resin directly or through an adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.