Projection headlamp lighting system using different diameter optical light conductors
CA 2076089 C · Owner: Davenport, John M. · Inventors: Hansler, Richard L.; Davenport, John M.; Barnes, Lee E. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A projection headlamp lighting system includes a light source to generate light, a light distributing arrangement to distribute the light to a preselected lighting position, and a light projecting arrangement at the lighting position to project the light in the desired pattern. The light distributing arrangement includes a plurality of elongated optical light conductors being of different diameter sizes and having respective input and output ends. The light projecting arrangement includes a housing for holding the output ends of the optical light conductors in an array to project a desired light pattern that is substantially tailored to optimally fit a vehicle's field of illumination with …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed August 13, 1992 and granted November 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 13, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.