An adjustable leak device for a rotating shaft
CA 2475010 A1 · Owner: Wright, Andrew · Inventors: Oppermann, Marthinus Johannes; Wright, Andrew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device (10) for controlling a leak of fluid through an opening (13) in a wall (14) over a rotating shaft (18), which rotating shaft extends through the opening is described. The device includes an adjustable member (20) adjustably mountable to the wall, the member having a generally stationary working surface (22) spaced from a rotating working surface (24) which rotates with the shaft such that an adjustable leak gap is defined between the stationary and the rotating working surfaces to control the leak of fluid through the opening.
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 7, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 7, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 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.