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Expired Canadian patentCanada

Hog feeder

CA 1098777 A · Owner: Chore-Time Equipment, Inc. · Inventors: Kallin, Ingmar

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

Feeder apparatus is provided for delivering a pre-determined amount of feed to hogs and like livestock. The apparatus includes a feed transporting and dispensing conveyor with which are associated a plurality of feeder units; each unit receives and temporarily stores the feed. Each unit includes a feed receiver body. A boot extends from the body and defines a discharge opening. A pear-shaped stopper valve carried in the boot fits into and onto the discharge opening to obstruct the flow. A stopper valve pull system acts to draw the stopper valve away from the discharge opening thereby permitting feed flow; if desired this pull sys-, tem can be connected to a timer so as to discharge the feed …

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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 April 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 7, 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 21, 1979
GrantedApril 7, 1981
Term endedApril 7, 1998
Patent numberCA 1098777 A
Classification (IPC)A01K5/02

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedMarch 21, 1979Patent grantedApril 7, 1981Term endedApril 7, 1998

Sources & verification

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