Folded edge seal for flashlamp array

Details Folded edge seal for flashlamp array Folded edge seal for flashlamp array

1982-07-26

1983-08-16

Wityshyn, Michael G.

Illumination

Photographic lighting

Plural light sources or light source supports

156 731, 156216, 156217, 156290, 156292, 264 23, 264248, 431357, B29C 2708, G03B 1502

Patent

active

043994911

ABSTRACT:
A multi-lamp photoflash unit has a plastic housing member with a back portion having a plurality of cavities formed to receive a reflector unit wherein is disposed a plurality of flashlamps and a light transmitting front portion formed to fold over and enclose the flashlamps and is characterized by the improvement wherein at least one part of one of the front and back portions of the plastic housing is folded over the edge of the other, aligned in parallel with and sealed to the other of the front and back portions to provide a shear-type seal. The multi-lamp photoflash unit is fabricated by a process wherein the front and back layers are contacted, one is folded over, aligned with and sealed to the other by spaced spot seals.

REFERENCES:
patent: 3303255 (1967-02-01), Bracey, Jr.
patent: 4187768 (1980-02-01), Suzuki
patent: 4326241 (1982-04-01), Broadt et al.

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