Rail wheel stop mechanism for road/rail vehicle
CA 2356231 A1 · Owner: Doka, Jeff · Inventors: Semple, Jim; Doka, Jeff
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For use with a road/rail vehicle that is convertible from a road mode for traveling on a road, to a rail mode for traveling on rails, an apparatus for mounting a rail wheel to the vehicle. The apparatus comprises an air bag bearing against the rail wheel and the vehicle frame such that the vehicle frame is supported on the rail wheel by the air bag and such that the vehicle frame can move up and down with respect to the rail wheel in response to motion of the vehicle along a set of rails. A stop mechanism is attached to the vehicle frame and to the rail wheel and is operative to allow the vehicle frame to move down with respect to the rail wheel only to a stopped position where adjacent …
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 29, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 29, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 2023.
- 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.