Vestige nozzle assembly for injection molding
CA 2263533 C · Owner: Kofsman, Michael · Inventors: Kofsman, Michael; Kroeger, Charles R.; Mcgrevy, Alan N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hot tip nozzle assembly (50) for injection molding plastic components comprises a nozzle housing (58) defining a hot runner passage (84) and a nozzle tip section (60) which is received in the hot runner passage. The nozzle tip section (60) defines a hot runner tip passage (94) in flow communication with the hot runner passage (84). The nozzle tip section slides (60) freely within the hot runner passage (84) during injection molding. A stop is provided on the nozzle tip section (92) to limit downward movement relative to the cavity gate and automatically position the nozzle tip (90) relative to the injection gate (128) of the mold. In addition axial thermal , expansion of the …
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
- Filed July 17, 1997 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 17, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 17, 2019.
- 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.