Barking drum
CA 1060316 A · Owner: Aktiebolaget Karlstads Mekaniska Werkstad · Inventors: Eriksson, Sture
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A barking drum rotatable about a horizontal axis has a plurality of parallel ridge-like lifting elements on its inside wall. The lifting elements extend longitudinally of the drum and are inclined to its axis so that in moving upwardly as the drum rotates they raise the back ends of logs in the drum higher than the front ends without causing lengthwise sliding of the logs. A sliding gate is disposed to be positioned transversely of the drum discharge outlet for controlling the log retention time in the drum.
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
- Granted August 14, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 14, 1996.
- 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.