Fibre optic street lighting fixtures
CA 2425474 A1 · Owner: Drysdale, Robert · Inventors: Roberts, L. Michael; Elsegood, Christopher J.; Drysdale, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention proposes a novel method of streetlight construction which , utilizes fiber optic, transmission of the light form a remote lamp-house to the radiating portion of the light fixture, located at the top of the lamp standard or utility pole thereby providing certain advantages. Utilizing light delivery via fiber optics the streetlight uses a remote lamp-, house to focus light onto fiber optics, which transmits the light to the radiating portion of the fixture and then dis-, tributes the light to a certain area whereby illumination for human vision and safety is provided. The delivered light is used for safety or decorative lighting and a reduction in general power, …
Read the whole patent
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 April 24, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2025.
- 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.