Safety pneumatic tire
CA 1104044 A · Owner: Bridgestone Tire Company Limited · Inventors: Yamauchi, Makoto; Goshima, Norio; Tsukahara, Kazumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A safety pneumatic tire which can improve running distance under punctured condition comprising an annular resilient reinforcing body having a maximum thickness corresponding to 4 to 9% of the tire maximum width and a JIS hardness of at least 60° in which a ratio of the tire maximum width TW to the rim width is 1.0 ? TW/RW ? 1.3.
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 June 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 1998.
- 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.