Tire tread structure
CA 1054914 A · Owner: Uniroyal S.A. · Inventors: Mirtain, Henri J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A tread for a pneumatic vehicle tire, characterized by improved wear, is disclosed. The tread includes a plurality of lugs separated by grooves and a plurality of circumferentially continuous ribs. Each edge of the lugs and ribs is chamfered. The width of each chamfer as projected onto the radially outward surface of the tread is between about 0.15L and about 0.5L, where L is the dimension of the unchamfered lug or rib measured perpendicularly to the chamfered edge and parallel to the surface of the tread. The depth of each chamfer is between about 0.2Z and about 0.4Z, where Z is the depth of the groove adjacent to the chamfered edge measured to the radially …
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
- Granted May 22, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 1996.
- 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.