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Expired Canadian patentCanada

Automatic pet food feeder

CA 1252007 A · Owner: Peng, Douglas C. · Inventors: Peng, Douglas C.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The automatic feeder is for dispensing dry pet food. It has a generally rectangular housing having three downwardly sloping platforms located one over another in a zig zag manner. The platforms separate the interior of the housing into a top storage chamber , a middle chamber and a bottom chamber. The bottom chamber has a side dispensing opening. Food pellets in the top storage chamber slide from the top platform onto the middle platform in the middle chamber. The middle platform has a vibration means mounted thereto. The vibration means is actuated for a predetermined time interval to cause an amount of food pellets to transfer from the middle platform into the bottom chamber. The …

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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 4, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 4, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 23, 1986
GrantedApril 4, 1989
Term endedApril 4, 2006
Patent numberCA 1252007 A
Classification (IPC)A01K5/02

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedDec 23, 1986Patent grantedApril 4, 1989Term endedApril 4, 2006

Sources & verification

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