Directional object sensor for automatic flow controller
CA 2333285 A1 · Owner: Parsons, Natan E. · Inventors: Parsons, Natan E.; Wu, Haiou
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In response to an infrared-radiation sensor assembly (12) a control circuit , controls an electromechanical valve (18) in an automatic faucet (16). Reflector surfaces (44, 46) so form a sensor beam as to cause the sensor to be insensitive to the presence of a sink (24).
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 17, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 17, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 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.