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.:
Date of Patent:
Feb. 01, 2000
Filed:
Mar. 26, 1998
William C Pizzo, Lisle, IL (US);
Illinois Tool Works Inc., Glenview, IL (US);
Abstract
The control knob engages, on its interior, a translucent polycarbonate jewel body collar assembly of a first color, such as white, which, in turn, provides a housing for a translucent polycarbonate jewel light pipe assembly of a second color, such as blue or blue-green. The jewel body collar assembly includes a collar to engage the interior cylindrical support section of the control knob and a light pipe housing assembly to engage the jewel light pipe assembly. The jewel body collar assembly further includes a ridge which protrudes through a slot in the sidewall and front face of the control knob thereby forming an indicator for the control knob. In ambient illumination, such as during the day, the indicator appears to be the color of the jewel body collar assembly, such as white. However, when the dashboard is electrically illuminated, such as during the night, the illumination is collected by the jewel light pipe assembly, and the color of the jewel light pipe assembly, such as blue or blue-green, is projected through the ridge of the jewel body collar assembly and the indicator appears to be blue or blue-green.