Method and apparatus for molding a thermoformable sheet material
CA 2473692 A1 · Owner: National Research Council Of Canada · Inventors: Youssef, Younes; Lebrun, Gilbert; Gagnon, Patrick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for molding thermoformable sheet material is set forth. The method includes the steps of providing a conventional stamp type mold one , section of which provides a compliant mold member which is augmented by diaphragm. The diaphragm coacts with the compliant member during a molding phase to ensure dimensional uniformity in the molded article. Further tight , or detailed areas are easily molded by making use of the compliant and diaphragm members. In a further embodiment tension adjusting is achieved , during molding by a series of discrete tension members. The tension members cooperate with the compliant and diaphragm members to significantly improve dimensional …
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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 January 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 2025.
- 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.