Chaff spreading attachment for harvesters
CA 1062575 A · Owner: Druffel, James E. · Inventors: Druffel, Donald G.; Druffel, James E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A chaff spreading attachment that is mountable adjacent the chaff discharge of a harvester, wherein the chaff discharge is located elevationally below and forward of a straw or stalk discharge. The chaff spreading attachment is utilized to create transverse air currents to spread the chaff over the width of the swath taken by the harvester. The attachment includes two oppositely facing fans that are rotated in the same direction about a transverse axis by mechanism connected to a power source provided by the harvester.
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 September 18, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 18, 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.