Snow disposal system
CA 2240080 A1 · Owner: Mccaffrey, Felim · Inventors: Mccaffrey, Felim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A snow disposal system includes a culvert laid out in a loop beneath an area receiving snow to be disposed of such as the, apron area of an airport, the culvert being located beneath local limits of frost penetration. A body of water at least partly fills the culvert, water circulation pumps being provided to cause the body of water to recirculate continuously through the culvert. Preferably multiple chutes, are provided at intervals along the culvert there being, enough water in the culvert to reduce snow from a typical snowfall to a slurry. Water main and storm drain connections may be made to the culvert to permit handling of heavier snowfalls.
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 June 10, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 10, 2020.
- 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.