Photoflash lamp and multilamp unit with electrostatic protection
US4049369A · kind A · utility
6Cited by
6References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1975 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Dec 29, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21K5/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high-voltage type photoflash lamp having an ignition structure comprising a mass of primer material bridging a pair of lead-in wires. An insulating sleeve encloses one of the lead-in wires and a fine conductor wire is attached to and projects from the unsleeved lead-in wire to assure contact with filamentary combustible material within the envelope so as to provide electrostatic protection. When mounted in a multilamp unit, each lamp is oriented with the unsleeved lead-in wire connected to a common circuit conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.