Opening of capsule inside sealed lamp
US5394056A · kind A · utility
5Cited by
13References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1993 |
| Grant date | Feb 28, 1995 |
| Priority date | — |
| Expiry date | Apr 7, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/395
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A capsule containing a precise amount of a substance such as mercury is mounted in an electrode mount assembly on a temperature sensitive member. At elevated temperatures the capsule is moved away from lamp components by the temperature sensitive member to preclude inadvertent release of the mercury into the sealed lamp. After the lamp has cooled, the temperature sensitive member urges the capsule into biased engagement with a cutting wire so that upon supply of current thereto the capsule is melted and opened to release the mercury.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.