The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6979094 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 27, 2005

Filed:

Apr. 15, 2004
Applicant:

Sanjiv Venkatram, Canton, MI (US);

Inventor:

Sanjiv Venkatram, Canton, MI (US);

Assignee:

Yazaki North America, Inc., Canton, MI (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D011/28 ;
U.S. Cl.
CPC ...
Abstract

A reflector provides different-colored backlighting to indicia and a background field of an instrument dial. The dial is mounted on a reflector, forming an interior space. The reflector is assembled on a printed circuit board (PCB). A recessed section of the reflector has an opening exposing a portion of the PCB to the interior space. Another section of the reflector provides a short tube having an inner cavity suspended over the opening. A first group of light emitting diodes is mounted on the exposed portion of the PCB under the tube such that light from the first group is reflected through the inner cavity to light a pointer. A second group of light emitting diodes having a different color is mounted outside the tube and backlights the indicia of the dial. A gap between the exposed portion of the PCB and an end of the tube enables light to leak from the inner cavity and backlight the background field of the dial a different color than the indicia.


Find Patent Forward Citations

Venkatram, Sanjiv. (2005). Multi-color backlighting of instrument cluster displays (U.S. Patent No. 6979094). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6979094

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