Safety roller assemblies
CA 1101321 A · Owner: Dunlop Limited · Inventors: Corner, Michael R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improvements in a safety roller of the type described in U K Patent Specification No 1 522 028 for, use within a tyre and wheel assembly to prevent disastrous loss of vehicle handling ability upon substantial tyre deflation. Improved strength, stability and wear, resistance of the safety roller support member (32) bearing surface(s) are provided in various arrangements (Figures 1 5 and 6), generally by a relative increase in the area of lateral and skew movement-resisting bearing surfaces 30 and 34. A superior bearing material (molybdenum disulphide impregnated nylon) is proposed. New forms of circumferentially inextensible but laterally elastic rings (40 42; 60;70) are proposed (Figures 1, …
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 19, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 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.