Isolator seal
CA 2571503 C · Owner: Aes Engineering Limited · Inventors: Roddis, Alan James; Colverson, Andrew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An isolator seal comprises a stator member (17) for location into the stator of rotating equipment and a rotor member (14) for location onto a rotary shaft of the rotating equipment. These two members provide respective adjacent surfaces (82/83) and a static shut-off device (81) engages both adjacent surfaces when the rotor member is static and disengages one or more of said surfaces when the rotor member is dynamic. In one aspect of the present invention at least one of said surfaces is inclined to the longitudinal axis at an angle greater or less than 90~. In a further aspect of the present invention the static shut-off device comprises a resilient annular sealing member (354) …
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 July 12, 2005 and granted December 16, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 12, 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.