Openable and closeable nozzle for the plasticizing cylinder of an injection molding machine
CA 1290525 C · 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
A plasticizing unit for an injection molding machine includes a carrier block; a plasticizing cylinder securable to the carrier block; an injection nozzle having a nozzle body connected to the front end of the plasticizing cylinder; a discharge outlet at the front end of the nozzle body; a valve needle cooperating with the discharge outlet and having a closed position shutting off the discharge outlet and an open position allowing discharge of material from the plasticizing cylinder through the discharge outlet; force-transmitting linkage means being connected to the valve needle; and a power unit for displacing said force-transmitting linkage means and the valve needle into the open or …
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 October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
- 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.