Tread for a tire
CA 2058813 A1 · Owner: Consolacion, Rudy Espinosa · Inventors: Buenger, Jerold Robert; Brayer, Randall Raymond; Consolacion, Rudy Espinosa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tread (12) for a tire (10) has a plurality of circumferential grooves (15, 18, 19). The circumferential grooves (15, 18, 19) have first and second walls (20, 22), the first wall (20) being on a side of the groove in a first axial direction and the second wall (22) being on the opposite side of the groove (15, 18, 19). The first and second walls (20 22) have an angular variation wherein the first walls (20) have an angular orientation 0, greater than the second walls (22) as a function of axial distance from a first lateral edge. At an intermediate groove (18) the angular variation between the first and second wall changes such that the orientation °2 of the second wall (22) is equal to or …
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 January 7, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 2014.
- 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.