Grommeted bypass duct penetration
CA 2509935 C · Owner: Pratt & Whitney Canada Corp. · Inventors: Bruno, Vittorio; Olver, Bryan; Hadi, Goli
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bypass duct sealing grommet (28) for sealing between an opening (24) in a gas turbine engine bypass duct wall (13) and the external surface of a projection (199 extending through the opening (24). Conventionally the , intersection between the projection (19) and the sheet metal bypass duct wall (13) requires accurate fitting and welding but cannot then accommodate , thermal expansion and contraction. The grommet (28) enables an oversized opening for relative thermal motion and simplifies manufacture. The grommet (28) has an annular body with a central aperture (29) adapted to seal against the external surface of the projection (19) and two flangers (30,31) defining an external slot …
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 18, 2003 and granted February 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 18, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 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.