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Expired Canadian patentCanada

Assembly for clamping mold to platens of injection- molding machine

CA 1161229 A · Owner: Kraus-Maffei Aktiengesellschaft · Inventors: Vostrovsky, Ernst

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

At an injection-molding machine an assembly for, clamping a mold half to a platen comprises a bore therein and a projection on a substantially planar face of the mold half. The projection includes an annular flange insertable into the platen bore and an annular groove defined in part by an inclined or beveled surface of the flange. A pair of sliding plates are reciprocatably mounted in the platen for shirting from withdrawn positions inwardly to locking positions the plates having, beveled inner edges for coating with the inclined flange surface to clamp the mold half to the platen. The bore is advantageously formed with a conical extension for accepting the head or nozzle of an injection …

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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 January 31, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 31, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 25, 1980
GrantedJanuary 31, 1984
Term endedJanuary 31, 2001
Patent numberCA 1161229 A
Classification (IPC)B29C45/17 +2 more

Timeline

Timeline From CIPO dates

1981198419871990199319961999Application filedSep 25, 1980Patent grantedJan 31, 1984Term endedJan 31, 2001

Sources & verification

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