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Expired Canadian patentCanada

Rotor for an axial flow rotary separator

CA 1096735 A · Owner: Deere & Company · Inventors: West, Neil L.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure, Material control elements carried by the rotor of an axial flow rotary combine separator include inclined blades as well as conventional rasp bars. The inclined blades take various forms but common features include their downstream inclination (that, is in the direction of the axial movement of crop material in the separator) and having a frontal working edge athwart the direction of rotation to engage crop material and deflect or urge it downstream. The orientation and configuration of the blades results in their working edges being their dominating material control feature while the inclined surfaces have a subordinate role in material control, the actual …

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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 March 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 13, 1979
GrantedMarch 3, 1981
Term endedMarch 3, 1998
Patent numberCA 1096735 A
Classification (IPC)A01F12/18 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedMarch 13, 1979Patent grantedMarch 3, 1981Term endedMarch 3, 1998

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.