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:
May. 19, 1998
Filed:
Mar. 07, 1997
William C Pizzo, Lisle, IL (US);
Illinois Tool Works Inc., Glenview, IL (US);
Abstract
The control knob includes a chamber into which a translucent polycarbonate jewel light pipe assembly of a first color, such as blue, and a translucent polycarbonate jewel cap of a second color, such as white, are inserted. The jewel cap is engaged against said jewel light pipe assembly and includes a bulbous portion which protrudes or stands proud through an axially oriented slot in the sidewalls 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 cap, such as white. However, when the dashboard is electrically illuminated, such as during the night, the illumination is collected by the jewel light pipe, and the color of the jewel light pipe assembly, such as blue or blue-green, is projected through the cap assembly and the indicator appears to be blue or blue green.