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Expired Canadian patentCanada

Feed mixing apparatus

CA 1105448 A · Owner: Deere & Company · Inventors: Ryan, Edward C.; Lindstrom, Harold R.; Bigbee, Marvin L.

CIPO record

Overview

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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 A grinder-mixer having a trough-shaped mixing tank a hori-, zontal transfer and mixing auger seated along the bottom of the tank and extending into the hammer mill and a vertical auger in, the tank for elevating the material for recirculation or discharge. Mixing capacity is increased with the larger tank and bridging of material is minimized with steeply inclined tank walls a central-, ly mounted agitator and the trough-mounted mixing auger. Power train demands are reduced through utilizing only two auger conveyors to transfer material from the hammer mill mix it in the tank, and elevate it for recirculation or discharge. Improved intermixing is provided through …

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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 July 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 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.
FiledApril 23, 1979
GrantedJuly 21, 1981
Term endedJuly 21, 1998
Patent numberCA 1105448 A
Classification (IPC)B02C13/28 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedApril 23, 1979Patent grantedJuly 21, 1981Term endedJuly 21, 1998

Sources & verification

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