Composite cylinder for use in aircraft hydraulic actuator
CA 2134886 A1 · Owner: Ching, Fred Yet-Fan · Inventors: Ching, Fred Yet-Fan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite cylinder constructed from a cylindrical liner (12) having an outer surface (18) which is dome shaped adjacent each end. A plurality of layers (30) of resin impregnated carbon filaments are wound on the outer surface (18) of the liner (19) and over the dome shaped portions. Preferably the filaments are helically wound and are wound at an angle with respect to the access of the cylindrical liner (12) such that radial stress as applied during operation will not tend to displace the filaments wound over the dome shaped portions of the liner (12). The composite cylinder is useful as an integral part of a hydraulic actuator used to position flight control surface on aircraft.
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 13, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2014.
- 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.