Non-powered, portable apparatus for clearing the mouth
CA 2090667 A1 · Owner: Yang, Shyi S. · Inventors: Kao, Tony; Yang, Shyi S.; Yang, Shyi S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus is disclosed for cleaning the mouth, including a chuck unit fastened to the outlet pipe of a water tap and locked in place by a locknut a, spray gun connected to the chuck unit by a spiral water tube, wherein the spray gun has a control valve controlled to eject a stream of water for cleaning the cavity of the mouth. A toothbrush may be attached to the handle of the spray gun in place of the nozzle thereof for cleaning the teeth. The toothbrush has water outlets on the brush head thereof through which water is ejected for cleaning the gaps in the teeth. 14
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 March 1, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 1, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 2015.
- 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.