Circuit override
CA 2312560 A1 · Owner: Duve, Jeff · Inventors: Duve, Jeff
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a manual override employing two resistor and capacitor time delay circuits ("R/C circuit") which are in communication with a microprocessor. In the absence of regular A/C power, the first R/C circuit is adapted to provide a signal for a predetermined time T1, and the second R/C circuit is adapted to provide a signal for a predetermined time T2. Since T2 is longer in duration than T1, it is possible for an end-user to deactivate the light via a wall switch for a period of time X, which is of a duration between T1 and T2. The microprocessor in turn, is programmed to sense that an override function is to be employed when this condition is sensed and consequently, the, PIR is …
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 June 27, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 27, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2022.
- 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.