Method of detecting filling weight for injection molder
CA 2055449 A1 · Owner: Yokota, Akira · Inventors: Yokota, Akira
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method of detecting the filling weight for an injection molder or specifically to a, method of detecting the weight of the plasticized synthetic resin injected from the injection molder cylinder to fill in the cavity of a mold. The objective is to ensure highly accurate detection of the filling weight on the injection, molder side, in continuous molding production. According to the invention, the weight of the resin injected from the cylinder to fill in the cavity is detected through operations on the basis of the positional values of the screw and the pressure and temperature values of the resin obtained before and after injection with the resin pressure …
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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 13, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 13, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2013.
- 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.