Pneumatic tire
CA 1237054 A · Owner: The Goodyear Tire & Rubber Company · Inventors: Hinkel, Walter W.
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 ground-engaging tread, portion. The tread portion has at least two circumferentially extending grooves, each groove having a pair of oppositely disposed sidewalls. One groove sidewall having a first portion extending radially outward in a substantially vertical direction from the base of the groove to a first point spaced a distance from the bottom of the groove a distance no greater than about one-half of the groove depth and a second portion extending from the first point radially outward to the tread surface at an inclined angle. The second groove sidewall extending from the base of the groove to the tread surface at an inclined angle. The included angle between …
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 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 2005.
- 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.