Swivelling and tilting chair
CA 2244813 A1 · Owner: Claiteal Pty Ltd · Inventors: Hibberd, Ronald Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chair (1) including a seat (2) coupled to a mounting shaft (3) having an axis of rotation (7), a base (4) and a shaft coupling which allows the shaft (3) to swivel relative to the base (4) about the axis of rotation (7) and allows the shaft (3) to tilt relative to a vertical orientation of the chair (1) to various degrees in the seat (4) direction and sideward directions and prevents the shaft (3) tilting to any substantial extent in the seats (2) rearward direction. The shaft coupling includes a spring bearing allowing the rotation and tilting and includes a cam fitted on the shaft (3) which limits the degree of tilting in accordance with the shape of the cam.
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 January 21, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 21, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 2019.
- 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.