Earthen material integrity sensing device
CA 2249873 A1 · Owner: Picton, Daniel R. · Inventors: Picton, Daniel R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sensing device and sensing process is described for indicating movement of earthen material adjacent a structure. The preferred device includes a tubular frame including a top end and a bottom end. An anchor is configured to suspend the frame from the structure with the bottom end oriented toward the earthen materials. An actuator is releasably mounted on the bottom end of the tubular frame, spanning the bottom end and configured to rest against and be supported by the earthen materials. The actuator is movable in response to movement of the earthen material relative to the structure from an inoperative position engaging and spanning the bottom end of the tubular frame to an operative …
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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 October 8, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 8, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 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.