An inextensible high temperature resistant runflat tire
CA 2291136 A1 · Owner: Zhang, Zhibin · Inventors: Zhang, Zhibin; Oare, Thomas Reed; Prakash, Amit
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A runflat radial ply passenger or light truck pneumatic tire (10) having a carcass (30) reinforced with at least one sidewall insert or filler (42) and one substantially inextensible cord reinforced ply (38) the ply being wrapped , about two bead cores (26) and located radially inward of a belt reinforcing structure (36). The sidewall insert or filler (42) is located radially inward of the ply (38). The cord (43) has a minimum modulus E of 10 Gpa and is generally inextensible and less heat sensitive than conventional synthetic cords used in passenger and light truck tires. In one embodiment the ply cords (43) are aramid, in another embodiment the cords (43) are steel.
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 April 17, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2020.
- 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.