Tread for pneumatic tire and tire comprising such a tread
CA 2127970 C · Owner: Hitzky, Leo Joseph · Inventors: Hitzky, Leo Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pneumatic tire having a block design suited for off-road use, modified to improve rolling resistance and noise properties when used on paved surfaces has a tread, design having angled lateral grooves with three branches between the blocks in each circumferential row of blocks in the tread. Narrow grooves separate the blocks in several of the rows of blocks, and tire bars are present in the lateral grooves separating blocks in other rows of blocks. Hook shaped sipes are located in the blocks about halfway between two laterally extending grooves. Void areas in the shoulder area of the tire enhance traction in mud and sand.
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 July 13, 1994 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 13, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 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.