Face seal assembly with composite rotor flange
CA 2438471 A1 · Owner: Giesler, William Lee · Inventors: Ullah, M. Rifat; Guiheen, James V.; Giesler, William Lee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite face seal having an annular seal rotor with a metal base portion and a radially extending flange. The flange having first and second axially facing surfaces. A first ceramic ring is mounted to the first surface of the flange by a first braze joint and a second ceramic ring is mounted to the second surface of the falnge by a second braze joint. The composite face seal assembly further includes an annular stator having an axially facing surface that seallingly engages an axially facing surface of one of the ceramic rings. Each of the braze joints may comprise a molybdenumg ring disposed between two braze rings or, for thicker seal assemblies molybdenum and nickel rings , …
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 February 13, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 13, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2024.
- 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.