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Expired Canadian patentCanada

Die closing unit with plate adjustment mechanism for injection molding machine

CA 1079017 A · Owner: Hehl, Karl · Inventors: Hehl, Karl

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

A die closing unit for an injection molding machine having either the stationary die carrier plate or the movable die carrier plate so connected to the tie rods or to, the piston rods, respectively, that the space between the two die carrier plates is adjustable, the adjustment mechanism including adjustment sleeves and rotationally coupled adjustment nuts seated on threaded tie rod portions a clamp-, ing flange creating a rigid tie rod connection by abutting the sleeves and by clamping their threads the sleeves hav-, ing drive teeth for synchronous adjustment rotation after release by means of either an internally geared adjustment ring or a gear chain, with the aid of a drive arbor.

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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 June 10, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJune 10, 1980
Term endedJune 10, 1997
Patent numberCA 1079017 A
Classification (IPC)B29C45/17

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJune 10, 1980Term endedJune 10, 1997

Sources & verification

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