Injection molding unit for an injection molding machine
CA 1253308 A · Owner: Hehl, Karl · Inventors: Hehl, Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An injection molding unit has a plasticizing unit formed of a plasticizing cylinder and a feed screw rotatably and axially shiftably received in the plasticizing cylinder a, supply block having a central passage adapted to receive an end portion of the plasticizing cylinder and a hopper communicating with the passage; conduits for admitting plastic material to the hopper from the outside a hydraulic, drive cylinder for inserting the injection molding unit into an injection mold assembly, a hydraulic injection cylinder connectable to the feed screw for imparting thereto periodic axial injection strokes and a locking device for releasably locking the plasticizing unit to a remainder of 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 May 2, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 2, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.