Method and apparatus for separating lighter and heavier portions of threshed tobacco
CA 1047354 A · Owner: Amf Incorporated · Inventors: Hudson, John H. (Jr.); Johnson, Herman T.; Ferrary, Ferdinand F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The method and apparatus for separating lighter and heavier portions of threshed tobacco by creating two adjacent vortices circulating in opposite directions the turbulence of which separates the threshed tobacco; the vortices coacting to form rising column of high velocity air for carrying off lighter portions of tobacco while heavier portions of tobacco drop to a pneumatic take-off.
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 January 30, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 30, 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.