Framing for a wheel chair
CA 1112991 A · Owner: Brattgard, Sven-Olof · Inventors: Brattgard, Sven-Olof
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Framing for a wheel chair with four wheels a number of frame, parts connected with each other and provided with bearing means for the wheels and a device for the support of a seat unit. The wheels are by means of the frame parts pairwise connected with two wheel undercarriages which are pivotably connected with each other via a pivoting hinge. This pivoting hinge secures an even distribution of the load on all the wheels substantially independent of level variations in the ground.
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 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 1998.
- 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.