Hot tip seal
CA 1136814 A · Owner: Gellert, Jobst Ulrich · Inventors: Gellert, Jobst U.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a hot tip seal located between the nozzle and the gate in an injection molding system. The seal has a generally cylindrical hollow outer portion which is seated in the nozzle and extends to abut on the cavity plate around the gate. Three ribs extend radially from the outer portion to an elongated central pin portion and define apertures therebetween. Pressurized melt flows from a central passage in the nozzle, through the apertures around the central pin portion and into the cavity. The nozzle seal prevents direct contact between the heated nozzle and the cooled cavity plate to reduce heat loss, while at the same time improves heat transfer to the gate area by …
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 December 7, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 1999.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.