Foldable pneumatic tire
CA 1057634 A · Owner: Bridgestone Tire Company Limited · Inventors: Hayakawa, Hiroshi; Ezura, Sakae
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A foldable pneumatic tire including an annular tread and sidewalls each extending from both ends of the tread and terminating in bead portions the sidewalls, adapted to be folded axially inwardly toward each other to be collapsed within the tread. The foldable tire located in a mold for vulcanization comprises the bead portions each extending perpendicular to a rotating axis of the tire and having a height 1.2 to 2.0 times of that of a flange of a rim, and each the sidewall consisting of first and second sidewalls making an angle with each other between 140 and 160°, and an outer surface of the second sidewall radially inwardly sloping at an angle of 0 to 5° to the rotating axis. The tire …
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 July 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 3, 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.