Multiple sensor lux reader and averager
CA 2332871 A1 · Owner: Bonasia, Gaetano · Inventors: Eckel, David P.; Bonasia, Gaetano
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for sensing and maintaining the light level within an area. The invention comprises multiple lux sensor readers that function to measure the current light level within an area. The readings are averaged such that over time any extreme readings are averaged out. The light level of the plurality of light sources (28) is adjusted in accordance with the averaged readings. The system includes control units (26) controllers, controls for window, skylight light pipe and shading, HVAC controls, lighting loads (28) and light sensors (22), that are used to construct the lighting control system of the present invention.
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 May 13, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 13, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 2021.
- 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.