Method for connecting several plastic components through injection molding around the sprue
CA 2322491 A1 · Owner: Lichtinger, Peter · Inventors: Lichtinger, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a method for producing molded parts consisting of several components, using plastic processing machines. Plastified plastic material is injected into two cavities formed by the halves of a tool for each component. A sprue element is provided at least for the first component (1). The invention is characterized in that the sprue element (4) of at least the first component remains in the mold and is totally or partially encapsulated by injection molding by the next component (5) during one of the following working cycles. This reduces the number of additional working steps for the removal of the sprue and prevents eventual impurities in the environment especially in 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
- Filed March 6, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 6, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 2021.
- 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.