Self-illuminated tell-tale
OwnerDouglas G. Mochainventor
Life of this patent
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Abstract
A tell-tale construction includes an optical fiber ribbon that emits light along its length to make the tell-tale visible at night. The optical fiber ribbon is housed between a pair of plastic strips having the size, flexibility, and weight of a conventional tell-tale, and the plastic strips are transparent or translucent so that the light emitted from the ribbon is visible through the plastic. In a preferred embodiment, a light emitting diode is modified by forming a slot in its leading end so that a first end of the optical fiber ribbon is insertable into the slot, in alignment with the light-emitting anode of the LED. In other embodiments, a central light source is employed and optical fibers deliver light to each tell-tale to eliminate the need for a light source associated with each tell-tale.
Claims6
A tell-tale assembly, comprising:
- an optical fiber of predetermined length;
- said optical fiber being treated along said predetermined length so that it emits light along said predetermined length;
- a pair of optical fiber housing members of elongate, flexible, light-in-weight, and transparent construction;
- said optical fiber housing members having a common size and shape, said common size and shape being collectively substantially equal to a size and shape of a tell-tale;
- said optical fiber being sandwiched between said optical fiber housing members;
- a light source;
- a light source housing;
- a first end of said optical fiber positioned in close proximity to said light source to receive light therefrom;
- whereby said optical fiber is visible under low light conditions due to light from said light source being emitted along the length of said optical fiber and being visible through said optical fiber housing members.
Dependencies are inferred from the claim text.