Grain bin reinforcement
CA 2291846 A1 · Owner: Twister Pipe Ltd. · Inventors: Welch, John P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
7-, A reinforcement member is used for reinforcing corrugated panels especially the corrugated metal panels of grain bin walls. The reinforcement member, is an elongate structural member with a corrugated web and at least one flange projecting from the web. The preferred structure is a channel structure with two, flanges along opposite sides of the web. The web nests into the corrugations of the, grain bin, eliminating pockets between the panel and the reinforcement member and, providing vertical support to the corrugations. The reinforcement members may be, used inside or outside a grain bin wall or where additional strength is , required both.
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 December 7, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 7, 2021.
- 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.