Log debarker
CA 1055811 A · Owner: Kockum Industries · Inventors: Allen, W. Henry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotary ring-type log debarker has barking tools operated by double-acting air cylinders with air pressure supplied through solenoid valves from a pressure chamber in the rotor. During normal debarker operation the rotor pressure chamber is isolated from an external source of air pressure. Air is supplied to the rotor pressure chamber intermittently only when necessary to maintain or increase air pressure in the chamber through a pilot air-operated ringtype air seal between the rotor and its stator. The seal is loaded only during the addition of air to the rotor pressure chamber to minimized wear on the sealing surfaces. Positive instantaneous opening and closing of the tools and changes …
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 June 5, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 5, 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.