Tool for moulding self-stiffened panels made from a composite material
CA 2002302 C · Owner: Taquoy, Bernard · Inventors: Taquoy, Bernard; Boime, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
For moulding self-stiffened panels (A) from a composite material with a thermosetting matrix, use is made of a tool comprising a block (10) a sealing bag (12), whose peripheral edge is connected to the block by a sealing bead (14), and solid, non-deformable calibration parts (22). Panel (A) is placed in a tight volume (16) defined between the block and the bag, whilst the parts (22) are placed outside said volume, above the bag and between the panel stiffeners (C). The calibration parts (22) are connected by a rigid structure (24). Thus when the volume (16) is placed under a vacuum and when the tool is placed in an oven or autoclave, a uniform pressure is applied to the panel by the bag …
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 November 6, 1989 and granted May 12, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 6, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 2011.
- 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.