Snow pack stability monitor
CA 2187751 C · Owner: Bilak, Roman A. · Inventors: Theriault, Larry M.; Bilak, Roman A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus comprises a probe for measuring snow pack movement, comprising a mobile element adapted to contact and be displaced by the snow pack, a static element linked to the mobile element by linkage means and adapted to remain stationary relative to the ground, and measuring means to measure relative movement of the two elements. The mobile element comprises a wand (16; 166) adapted to be placed in contact with a snowpack and having tilt means (20(a); 20(b); 168) that permit the want to tilt away from the vertical in response to lateral movement of the surrounding snow pack. The measuring means comprises a movement sensor (50; 170) connected to the wand that measures the resulting …
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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 April 20, 1995 and granted July 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 2017.
- 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.