Card – picture – or sign exhibiting – Illuminated sign – Edge illuminated
Patent
1983-12-23
1988-12-20
Peshock, Robert
Card, picture, or sign exhibiting
Illuminated sign
Edge illuminated
40580, G09F 304
Patent
active
047917466
ABSTRACT:
A display device includes a component in the form of a plate bearing one or more display indicia on one plate surface and having a passage extending through the plate adjacent the display indicium. An integral light-transmissive element is fixedly secured in the plate passage and has a first lensed surface at one end adjacent the display indicium. At its opposite end, the light-transmissive element defines both a second lensed surface and a flat surface in abutting relation to a stepped part of the passage within the plate. The first lensed surface is convex relative to the light-transmissive element and the second lensed surface is concave relative to the light-transmissive element. The element, comprised of a polycarbonate film which is highly resistant to impact damage, is of dimension relative to the passage such that an interference-fit exists therebetween. The element is accordingly not removable by action thereon at the display surface, is not destructed by impact and cannot be forced against an interior light source, thereby providing a quite high degree of resistance to vandalism.
REFERENCES:
patent: 362820 (1887-05-01), Craige
patent: 1045942 (1912-12-01), Burleigh
patent: 1054274 (1913-02-01), Burleigh
patent: 2168223 (1939-08-01), Lauve, Jr.
patent: 2310665 (1943-02-01), Williams
patent: 2372937 (1945-04-01), Dircksen et al.
patent: 2652651 (1953-09-01), Barbera
patent: 2945313 (1960-07-01), Hardesty
patent: 3811211 (1974-05-01), Morgan
patent: 4310974 (1982-01-01), Gdovin et al.
Hakomaki J.
P.T.L. Equipment Co., Inc.
Peshock Robert
LandOfFree
Vandal resistant display units does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vandal resistant display units, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vandal resistant display units will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1903093