Integrated chair and control
CA 1263296 C · Owner: Steelcase Inc. · Inventors: Knoblock, Glenn A.; Teppo, David S.; Beukema, Duane M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An integrated chair and control arrangement is provided for tilt back chairs, and other similar seating. The chair has a base as well as a back and a bottom or seat which are interconnected for mutual rotation about a common axis. The common axis is located above the chair bottom forward of the chair back, and generally adjacent to the hip joints of a seated user. A control supports the chair back and chair bottom on the base in a manner such that rearward tilting of the chair back simultaneously shifts the chair back, the chair bottom, and the location of the common axis in a manner which maintains the adjacent spatial relationship between the common axis and the hip joints of the seated …
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
- Granted November 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 28, 2006.
- 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.