Method of sealing and seal for high speed rotary applications
CA 2262890 A1 · Owner: Schmidt, Gerhard · Inventors: Schmidt, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method sealing high speed rotary applications. Firstly mount a first sealing ring having a plurality of flow passages onto a stationary member. Each of the plurality of flow passages has a discharge end positioned in a first sealing surface. Secondly, mount a second sealing ring onto a rotational member adapted to rotate at high speed. The first sealing ring and the second sealing ring are positioned in face to face relation with a gap between the first sealing surface and a second sealing surface. Thirdly, pump a liquid through the plurality of flow passages at a pressure sufficient to preclude the passage of contaminants through the gap.
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 24, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 24, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 24, 2021.
- 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.