Method for fabricating fluorescent lamp
US4353727A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1981 |
| Grant date | Oct 12, 1982 |
| Priority date | — |
| Expiry date | Jul 23, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A mount having a flared portion is so located that it is coaxial with a straight glass tube having an unconstricted end part and that an end face of the flared portion lies slightly inwards with respect to an end face of the glass tube. Subsequently, an outer surface of the end part of the glass tube is uniformly heated, whereby the flared portion and the end part of the glass tube are melted and stuck to each other. At this time, a surface temperature of the whole glass tube except the melted and stuck portion is maintained at or above 40.degree. C. As a result, a fluorescent lamp having good lamp characteristics is fabricated by the use of the inexpensive glass tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.