Tread for a tire
CA 2124372 C · Owner: Brayer, Randall Raymond · Inventors: Consolacion, Rudy Espinosa; Brayer, Randall Raymond; Croyle, Warren Lee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An asymmetric non-directional tread for a tire is disclosed. The tread has a plurality of ground engaging tread elements separated by circumferential and lateral grooves. The net contact area in a first tread half is approximately equivalent to a net contact area in a second tread half although the tread stiffness in the first tread half preferably is higher than in the second tread half. The outboard side of same circumferential grooves may be tapered to buttress tread elements against cornering forces. The total of the average groove widths of the circumferential grooves of the first tread half being greater than the total of the average groove widths of the circumferential grooves of the …
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 May 26, 1994 and granted January 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 26, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 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.