Stair-climbing wheelchair carrier
CA 1283668 C · Owner: Sunwa Sharyo Manufacturing Co. Ltd. · Inventors: Misawa, Rintaro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A stair-climbing wheelchair carrier, comprising a carrier portion comprising a pair of endless belt crawlers and a, handle portion rotatably and detachably provided on the carrier. The handle portion is adapted to be rotated between an operating position and a wheelchair engaging position. The endless belt crawler has an oblique overhand portion which has a height higher than a usual height of a step of stair. A guide body is provided to mount a wheelchair secured to the handle portion so as to be rotated together with the handle portion to the operating position. 12
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 April 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 2008.
- 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.