Toothbrush
CA 2066469 A1 · Owner: Hukuba, Hiroshi · Inventors: Hukuba, Hiroshi; Hukuba, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided an electrically driven toothbrush having a simple structure and capable of changing the reciprocation stroke of bristles in a simple operation. The toothbrush is composed of a head portion 10 including a bristle portion 15 studded with bristles 14 a grip portion, 12 having a motor 22, an intermediate transmission member 20 mounted in the grip portion and connected to the head portion, and a conversion mechanism 24 interposed between the intermediate transmission member and the motor for converting a rotational movement of the motor into a reciprocal movement of the intermediate transmission member. At least the bristle portion of the head portion is resiliently tiltable …
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 April 21, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2014.
- 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.