Illuminated instrumentation display

Illumination – Illuminated scale or dial – Edge illuminated modifier or light rod/pipe

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Details

362 32, 116288, 116328, 336120, G01D 1128

Patent

active

053195272

ABSTRACT:
An illuminated apparatus comprises a fixedly mounted air core gage having a spindle which rotates in response to signals provided to the air core gage, a first coil fixably mounted with respect to the air core gage having a first axis coaxial with the spindle, a power source coupled to the first coil, providing power to the first coil, which responsively generates a magnetic flux, a pointer body mounted to the spindle and rotating in response to rotation of the gage spindle, a second coil mounted to the pointer body adjacent to the primary coil, a light source mounted on the pointer body, coupled to and receiving the electric current from the second coil, the electric current illuminating the light source, and a light pipe pointer arm receiving light from the light source and emitting light out of an exit surface to appear as an illuminated pointer to an observer.

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patent: 5142453 (1992-08-01), Ohta et al.
patent: 5143434 (1992-09-01), Otha et al.

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