Run-flat vehicle tire
CA 1136530 A · Owner: W.R. Grace & Co.-Conn. · Inventors: Ross, William C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
USSN 33,679, Filed April 26, 1979, RUN-FLAT VEHICLE TIRE Abstract of the Disclosure, An insert to provide a run-flat capability to pneumatic vehicle tires comprises a flexible, compressible porous ring comprised of a, plurality of successively-wound circumferential layers of an elastomeric binder-coated filamentary material, the coated filaments having voids therebetween and being bonded to one another by the binder. The insert has desirable properties including lightweight flexibility, and good load-, distributing properties which make it a practical and useful component of any run-flat insert design for pneumatic tires. In preferred embodiments the, insert is spaced and supported from the …
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 November 30, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 30, 1999.
- 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.