Composite barrel sections for aircraft fuselages and other structures, and methods and systems for manufacturing such barrel sections
CA 2857682 C · Owner: The Boeing Company · Inventors: Biornstad, Robert D.; George, Terry J.; Blankinship, Bruce C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for manufacturing a barrel section of an aircraft fuselage comprises: positioning a plurality of uncured composite stiffeners on a mandrel assembly the , plurality of uncured composite stiffeners extending substantially parallel to a , longitudinal axis of the barrel section; holding the plurality of uncured composite , stiffeners in position on the mandrel assembly by wrapping uncured composite fabric , sheets 360 degrees around the mandrel assembly and over the stiffeners; applying a , plurality of uncured composite fiber tows over the uncured composite fabric sheets to , form a continuous skin extending 360 degrees around the mandrel assembly; and cocuring the stiffeners, …
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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 28, 2005 and granted September 13, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 28, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.