Wheel for in-line skates
CA 2136907 A1 · Owner: Boyer, Geoffrey · Inventors: Boyer, Geoffrey
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved wheel for an in-line skate comprising, a hub for rotation about an axis a circular ring made of a, relatively hard material disposed concentrically about the hub, the ring having an outer ground engaging peripheral surface, and a core disposed concentrically about the hub for at least partially supporting the ring in a ground engaging position thereof, the core having an outer ground engaging peripheral surface and being made of softer material compared to the ring, and wherein the diameter of the ring exceeds the diameter of the core to provide a discrete radial transition from the ground engaging surface of the core to the ground engaging surface of the ring.
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 29, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 2016.
- 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.