Shopping cart wheels with polymeric bearing races
CA 2076481 C · Owner: Hicks, Jimmy L. · Inventors: Hicks, Jimmy L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved shopping cart wheel which includes a hub which has bearing supporting cavities, The outer bearing is fabricated from a polymer, and the inner bearing is likewise fabricated from a polymer and has a cylindrical portion which extends into the center of the hub. This construction avoids the corrosion heretofore caused by cleaning solutions on the metal races.
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 August 20, 1992 and granted November 3, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 20, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2014.
- 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.