Communications: electrical – Visual indication – Having light piping
Patent
1991-08-29
1994-04-26
Weldon, Ulysses
Communications: electrical
Visual indication
Having light piping
34081547, 34081577, G08B 500, G09F 1912
Patent
active
053070577
ABSTRACT:
A fiber optic display sign is provided comprising a plurality of magnetically actuatable indicator elements, each having associated therewith at least two fiber optic cables for transmitting light. Each of the fiber optic cables has an end face for emitting light which terminates in an indicator element, and an end face for receiving light which is positioned in close proximity with the other light receiving end faces to form a light receiving surface. A light source assembly moveable with respect to the light receiving surface includes a primary light source and a secondary light source each adapted to illuminate the light receiving surface when aligned therewith. The light source assembly is alternatively moveable to a first position at which the primary light source is aligned with the light receiving surface or a second position at which the secondary light source is aligned with the light receiving surface. An electronic circuit detects an interruption in the current through the primary light source and provides an electrical signal in response thereto. A solenoid responds to the electrical signal by moving the light source assembly from the first position to the second position and energizing the secondary light source.
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Schott Glaswerke, Wiesbaden, Germany, product catalog.
Bawadekji Anwar
Cook Kenneth J.
Davis Donald J.
Stack Thomas E.
Stout Jeffry B.
Fatahi-yar M.
Vultron, Inc.
Weldon Ulysses
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