Device for redirecting light through a hollow tubular light conduit
CA 2061387 A1 · Owner: Leite, Michael J. · Inventors: Leite, Michael J.; Cobb, Sanford, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Docket No. 43640CAN8A, Abstract of the Disclosure When two hollow tubular light conduits are interconnected at a miter joint, beamed light can be redirected from one of the conduits to the other by athin transparent prismatic element that is mounted to extend along the plane of the miter joint. When the interconnected conduits are acting as a luminaire the miter, joint can be fully illuminated by the transported light. A luminaire of unlimited length can be obtained by mounting a plurality of lamps and parabolic reflectorsalong a transparent hollow tubular light conduit and redirecting light from eachlamp to be transported along the axis of the conduit in both directions. …
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 February 18, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 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.