Pile load testing device
CA 2062379 C · Owner: Arctic Foundations, Inc. · Inventors: Long, Erwin L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pile load testing device for testing the loading of a test pile extending downwardly into the ground. The testing device includes a reaction pile axially disposed inside the test pile and extending further into the ground than the test pile, a reference pile disposed axially inside the reaction pile and extending further in the ground than both the test pile and the reaction pile a loading device for, simultaneously exerting a downward force on the test pile and an upward reaction force on the reaction pile such that the test pile moves downwardly, and a measuring device for detecting the rate at which the test pile moves downwardly. An insulated shroud circumscribes the testing device …
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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
- Filed March 6, 1992 and granted April 22, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 6, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 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.