Patent Yard Sign in
Expired Canadian patentCanada

Squeeze station for automated molding machine

CA 2591325 C · Owner: Hunter, William A. · Inventors: Hunter, William A.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

An automated matchplate molding machine includes a cope flask a pattern plate , and drag flask for creating formed sand molds. A lock is provided to lock the drag flask to the platen table of the molding machine during desired stages of an individual sand molding sequence. The lock between the drag flask and the platen table may include actuated pins which engage corresponding detent structures such as tapered holes integral with the drag flask and prevent lateral migration of the drag flask relative to the platen table. Additionally, cope flask actuators are provided which vertically support and are operable to raise the cope flask relative to the squeeze head to facilitate release …

Read the whole patent

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

  • Filed December 5, 2005 and granted August 6, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 5, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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 5, 2005
GrantedAugust 6, 2013
Term endedDecember 5, 2025
Patent numberCA 2591325 C
Classification (IPC)B22C9/00 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedDec 5, 2005Patent grantedAug 6, 2013Term endedDec 5, 2025

Sources & verification

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