Method and apparatus for maintaining filaments in position in a filament winding process
CA 2444324 A1 · Owner: Resin Systems Inc. · Inventors: Elliott, Bruce L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for maintaining filaments in position when manufacturing composite parts through a filament winding process. In its most basic form the method includes a first step of applying resin impregnated filament onto an elongate mandrel. A second step is involved of winding yarn onto the elongate mandrel overlying the resin impregnated filament to, maintain the resin impregnated filament in position and under tension.
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 October 22, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 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.