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:
Mar. 02, 1999
Filed:
Sep. 18, 1997
Jerry L Williams, Tinley Park, IL (US);
Dennis J Hilburger, Dolton, IL (US);
Jacek J Jozwik, Richton Park, IL (US);
Kent A Kekeis, Hammond, IN (US);
Timothy J Mazies, Oak Forest, IL (US);
Gregory A Sink, Lombard, IL (US);
John M Davenport, Lyndhurst, OH (US);
Richard L Hansler, Pepper Pike, OH (US);
William J Cassarly, Richmond Hts., OH (US);
Federal Signal Corporation, Oak Brook, IL (US);
General ELectric Company, Schenectady, NY (US);
Abstract
A lighting system and method for broadcasting colored lights as emergency warning signals from a light source. A centralized continuous light source is coupled via a fiber optic transmission medium to an external display location such as a lens or the like located on a vehicle. The color and the relative intensity of each color is periodically modulated to alternate between at least two states such that the contrast between these alternating states is perceived by observers to be a flashing source of light with no off-time. The frequency and the duty cycle of the repetition rate of alternating between the states may be further controlled to better draw attention to the light source.