Patent Yard Sign in
Expired Canadian patentCanada

Delay stretch and blow machine system

CA 1204905 A · Owner: Emhart Industries, Inc. · Inventors: Duga, Robert J.; Spurr, Robert

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

In a machine system for continuous formation of molecularly oriented plastic bottles by blowing heatconditioned parisons comprising a plurality of parisonforming stations, i.e , sixteen (16); a plurality of blowing stations, but fewer in number than the number of parison-forming stations, i.e. four (4); and a storage area between the parison-forming and parison-blowing stations improvements are described primarily in the storage area and in the mechanisms for transferring hot parisons from the parison-forming station to the storage area and from the storage area, sequentially in multiples to the blowing, station.

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

  • Granted May 27, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 27, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 22, 1980
GrantedMay 27, 1986
Term endedMay 27, 2003
Patent numberCA 1204905 A
Classification (IPC)B29C49/12

Timeline

Timeline From CIPO dates

19811984198719901993199619992002Application filedJan 22, 1980Patent grantedMay 27, 1986Term endedMay 27, 2003

Sources & verification

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