Elevation chair
CA 2392479 A1 · Owner: Kaneda, Takashi · Inventors: Mizuseki, Isamu; Adachi, Kazuya; Kaneda, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An elevation chair having a seat which is elevated by a driving mechanism, provided with a seat frame and a seat main body attached to the frame as to incline forward, the seat main body has an oscillation mechanism to automatically incline the seat main body forward at a predetermined height, and an angle detecting means to stop the driving mechanism when the seat main body reaches a predetermined inclination angle. And, the elevation chair has an automatic braking mechanism which releases wheels when a footrest attached to a position above a front wheel is laid to be horizontal, and brakes the wheel when the footrest is standing.
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 July 4, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 4, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 4, 2024.
- 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.