G - Physics – 03 – B
Patent
G - Physics
03
B
240/77
G03B 15/04 (2006.01)
Patent
CA 1103638
ABSTRACT OF THE DISCLOSURE A photoflash unit having a flashed lamp indicator comprising two layers of film having different colors, one of the layers being a heat-shrinkable material and the other layer being translucent and substantially unaffected by the heat of lamp flashing. An adjacent indicia sheet provides an aperture through which one of the indicator colors is visible. Upon flashing of an associated lamp, the heat shrinkable layers shrivels from view and the color of the other layer becomes visible through the aperture to clearly identify which lamp was flashed. In one embodiment, the two-color indicator is used to identify the last lamp flashed in a sequence, while each of the preceding lamps in the sequence has a respectively associated single-layer color indicator which shrinks away to leave a void upon flashing of the lamp.
313526
Harvey William J.
Mcdonough Thomas B.
Shaffer John W.
Gte Sylvania Incorporated
R. William Wray & Associates
LandOfFree
Photoflash unit with two-color indicator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photoflash unit with two-color indicator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photoflash unit with two-color indicator will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-978117