Stacking method and equipment for measuring the timber volume and other dimensions of a stack of logs
CA 2069633 C · Owner: Kauppinen, Mauno · Inventors: Kauppinen, Mauno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a stacking method, for measuring the timber volume and other dimensions of a stack of logs in, which method the external dimensions of the stack the, average diameter and length of the logs are measured and, from these the timber volume is calculated. In the method a beam of light on the stack is set transversely round the stack, the beam of light at the surface of the stack is photographed at an angle from both in front and behind and, the location of the beam of light is measured from a video image. Furthermore, curves in the video image depicting the surface of the logs are recognized and differentiated from the image obtained, the diameters of the outer logs are calculated …
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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 November 23, 1990 and granted June 18, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 23, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2012.
- 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.