Glowswitch starter with specific glass envelope composition
US5872427A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1997 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Aug 21, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/64
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A glowswitch starter according to the invention is provided with a discharge vessel (1) which is closed in a gastight manner and which has a wall (2), with a pair of electrical conductors (3a, 3b) passed through a portion (2b) of the wall of the discharge vessel, and with a bimetal element (4a) in the discharge vessel which is conductively connected to one (3a) of the electrical conductors (3a, 3b), the discharge vessel containing an ionizable filling. The glowswitch starter according to the invention, which is characterized in that at least that portion (2b) of the wall through which the electrical conductors are passed is made from a glass containing at least 5% BaO by weight, has a short ignition delay time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.