Remote operated logging system
CA 2250536 A1 · Owner: Dextras, Kenneth G. · Inventors: Dextras, Kenneth G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a system (and devices) for performing selective and unmanned, aerial logging "off the sump"; thereby eliminating the need for clear cutting and most of, the associated roads. The net result is a controlled harvest that leaves the remainder of the, forest intact and undisturbed. This is accomplished by using an explosive method (and, device) to launch a pre-trimmed tree trunk with a rocket powered vehicle , attached to it at the appropriate location, to a safe elevation above the tree line. Once this elevation is, attained, the rocket powered vehicle kicks-in to support and carry the log to a , predetermined location using a missile guidance system. Other …
Read the whole patent
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 23, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 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.