Illuminated switches and rubber material for the cover piece therefor
US5407721A · kind A · utility
14Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1993 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Nov 19, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24917
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A finger touch member of an illuminated switch prepared by a process comprising printing or coating a surface of a multicomponent rubber material composed of, as essential components, 90-70% by weight of EPDM and 5-30% by weight of liquid polymerized butadiene rubber, with an ink of contemplated color, covering the entire top face of the resulting printed or coated cover piece with a light blocking coating layer and irradiating the so covered top face with a laser beam to cut out the coating layer in a contemplated pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.