Illuminated sign
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 19, 1991
Grant Date -
N/A
app pub date -
Dec 22, 1989
filing date -
Apr 24, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An illuminated sign (10) that produces a luminescent display that is especially suitable for attachment to an article of clothing such as a jacket (60) or cap (70). The sign (10) consists of an electroluminescent lamp (12) that produces a luminescent cool light, in either, white, yellow or green/blue, that is visible through the openings of an indicia stencil (26) affixed to the front of the lamp (12). The lamp is encapsulated in a film (24) that is further protected by a sign protecting cover (28) having an opening (30) into which is inserted the stencil (26). The signs power circuit consists of an inverter (46) that is powered by a battery (44). The inverter produces an output of 140-volts a-c at 400 Hz that is applied directly to the input of the electroluminescent lamp (12) and that is controlled by a power switch (48). The problems inherent with using protruding LEDs and the limitation of the displays that can be made with the LEDs is eliminated by using the stencil (26) in combination with the electroluminescent panel (12).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully