Wheelchair
CA 2115147 C · Owner: Ultra Reach, Llc · Inventors: Galumbeck, Michael H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lightweight, optionally foldable wheelchair (10) which allows the user maximum control over both travel direction and seat position. The wheelchair is driven manually by an arrangement of drive gears which are actuated by a drive gear selector (44) and operated by rotating a pair of opposed handwheels (32 34), one of which is contacted by each of the occupant's hands. One of four or more different gears may be selected. including a "Forward Only" and a "Reverse Only" gear. which allow travel only in the direction selected. A dual function shift lever (42) supports the drive gear selector and may be activated to disengage the drive gears and engage a seat positioning gear (142). When the …
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 August 7, 1992 and granted December 22, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 7, 2014.
- 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.