Sand flow system for underfilling caisson
CA 1189331 A · Owner: Stenning, David G.C. · Inventors: Simson, Gary A.; Fitzpatrick, Patrick J.; Stenning, David G.C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A structural element is installed in a body of water by placing bearing pads on the bed of the body of water at the desired location, the pads including solid bottom portions and compressible foam top portions; floating the element into position over such pads; adding ballast to the element to cause the element to sink onto the pads; filling the space between the base of the structural element and the bed of the body of water with particulate foundation material, which is pumped into such space in slurry form; and adding additional ballast to the structural element to compress the foam beyond the yield point thereof whereby the bulk of the load of the element and ballast is transferred from …
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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
- Granted June 25, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2002.
- 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.