Electrically heated transparency with multiple parallel and looped bus bar elements
US5824994A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1996 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Jun 13, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/016
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrically heated transparency which has a glass plate, a pair of bus bars provided at upper and lower sides of the glass plate and a transparent electric conductive film disposed on a surface of the glass plate so as to connect the pair of bus bars. The upper side bus bar has two upper bus bar elements. The upper bus bar elements are respectively extended to current feeding portions and have free ends at opposite positions in an upper side portion of the glass plate and near both sides of the transparent electric conductive film. The upper bus bar elements have parallel portions, in a connecting portion for connecting the upper side bus bar to the transparent electric conductive film, so as to oppose to each other with a space, and the upper bus bar elements are in contact with the transparent electric conductive film at the parallel portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.