Belt structure for a radial pneumatic tire
CA 2036635 C · Owner: Navaux, Stanley · Inventors: Navaux, Stanley
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A radial ply pneumatic tire (10) has carcass plies (13- 15) reinforced by textile cords and folded axially around a pair of axially spaced bead cores (11,12) and a belt structure (30; 330) comprising at least two layers (32-34; 332-334) made of spirally wound strips. The spirally wound strips are reinforced by cords consisting at least in part of aramid yarns. Between each pair of neighboring layers (332- 334) of spirally wound strips, a ply (340,341) reinforced by textile cords is interposed. Such a belt structure is more specifically suitable fox an aircraft tire.
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 February 19, 1991 and granted April 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2013.
- 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.