Anisotropic laminate of belted portions of a scrap tire
CA 2068529 A1 · Owner: Snyder, Robert H. · Inventors: Snyder, Robert H.; Snyder, Robert H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The problem of recycling scrap radial tires is addressed by providing many uses for a laminate made by bonding two or more belt sections of a radial tire, the sidewalls of which have been cut away, the tire then cut open, and de-treaded. The result is a multi-ply structure (11, 13) which is sensibly rigid in all three directions because each belt ply in a belt is reinforced with cords (12, 14) at an angle, the cord angle in one belt ply being opposed to the angle in the other. A slat, bar or beam, formed with, plural belts is essentially rigid in a direction at right angles to its longitudinal axis, because for bending to occur one belt must, be in tension and the other in compression. …
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 18, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 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.