Illuminated indicator gauge
First Claim
1. In an illuminated indicator instrument, the combination of a casing having an open end closed by a viewing window, a translucent dial spaced inwardly of said window, said dial having indicia thereon, a movement within said casing inwardly of said dial and a pointer between said dial and window operatively connected to said movement, a light source within said casing toward the rear thereof and laterally of said movement, and a light conducting prism between said movement and said dial having a beveled surface at an upper edge thereof spaced from the edge of said dial to receive light directly from said light source, said beveled surface reflecting light transversely therethrough by said beveled surface and a portion of said dial receiving light directly from said source and passing light directly therethrough to illuminate the pointer and dial.
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Accused Products
Abstract
An indicator gauge has a flat light conducting prism with an upper beveled surface positioned between the translucent dial and movement of the indicator. The prism receives light from a source located in the rear portion of the gauge and laterally of said movement, such that light is reflected downwardly by the beveled edge through the prism to illuminate the dial and pointer. A second annular prism may also be provided with a beveled surface so as to reflect light from the source across the face of the dial.
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Citations
6 Claims
- 1. In an illuminated indicator instrument, the combination of a casing having an open end closed by a viewing window, a translucent dial spaced inwardly of said window, said dial having indicia thereon, a movement within said casing inwardly of said dial and a pointer between said dial and window operatively connected to said movement, a light source within said casing toward the rear thereof and laterally of said movement, and a light conducting prism between said movement and said dial having a beveled surface at an upper edge thereof spaced from the edge of said dial to receive light directly from said light source, said beveled surface reflecting light transversely therethrough by said beveled surface and a portion of said dial receiving light directly from said source and passing light directly therethrough to illuminate the pointer and dial.
Specification