Foot-controlled water faucet
CA 2053008 A1 · Owner: Chuang, Shih-Wei · Inventors: Chuang, Kan-Jung; Chuang, Huo-Lien; Chuang, Kan-Jung
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A foot-controlled water faucet for regulating the outflow of water from a water faucet by means of air pressure comprises a compressing bladder 1 connected with an air bladder 81 in the water faucet by a passageway 3 a valve, block 86, a ring body 67 and a knob 52 associated in proper order to form the water faucet. When stepping on the compressing bladder 1 by foot the air inside is compressed and is squeezed to the air bladder 81 in the water faucet via the passageway 3. The air bladder 81 expands and pushes the platform 35 as well as the stem in the ring body 67 and the valve block 86 respectively downward. The stem 18 moves away from the opening of the valve block 86 and water flows …
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 October 8, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2013.
- 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.