Tire balancing using glass beads
CA 2216744 C · Owner: Counteract Balancing Beads Inc. · Inventors: Leblanc, Roger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A free-flowing material made up of glass beads. The glass bead material are introduced into a imbalanced tire. The motion of the imbalanced tire encourages the glass bead material to migrate to areas of the inside tire lining so as to correct the imbalance. Once the tire is balanced, the glass bead material migration come to a general stop and generally remain on the resting area of the inside tire liner until a sudden shock is applied on 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
- Filed September 29, 1997 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2019.
- 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.