Bearing free wheel and related improvements to pallet flow storage systems
CA 2029759 A1 · Owner: Downs, Gerard M. · Inventors: Downs, Gerard M.; Leyland, Michael Wm. A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improvement relating to material handling and storage equipment for warehousing applications such improvement, consisting of a bearing free wheel having appropriate friction reducing means, such bearing free wheel being suitable for replacement of bearinged wheels typically employed in such applications, and such bearing free wheel providing satisfactory rolling characteristics and improved durability and maintenance characteristics in environments where moisture is encountered.
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 November 13, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 13, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2012.
- 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.