Fluorescent lamp having heater circuit disconnect device
US4156831A · kind A · utility
12Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 1978 |
| Grant date | May 29, 1979 |
| Priority date | — |
| Expiry date | May 24, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/541
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rapid start fluorescent lamp contains a circuit opening device on the cathode mount which opens a short time after lamp starting and stops heater current flow to the cathode. The circuit opening device is a thermostatic element in a sealed glass tube. Additional support is provided for the cathode end that is connected to the circuit opening device in order to prevent damage from vibration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.