Incrementally adjustable arc apparatus
CA 2082706 A1 · Owner: Lyman, Dan · Inventors: Ludovici, Alan; Ludovici, Alan; Lyman, Dan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an apparatus for adjusting the angle between elements of a wheelchair. In one embodiment the apparatus, includes a plate with interlocking teeth and a locking block with matching teeth. The locking block is attached to the wheelchair or an element of the wheelchair.The plate is pivotally attached to the same wheelchair or wheelchair element. The angle between the plate and the wheelchair or wheelchair element is fixed by pivoting the attached components to the desired position and forcing the interlocking teeth of the date to engage the matching teeth of the locking block.
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 November 12, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 12, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 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.