A seal for a pump, and a pump comprising the seal
CA 2282389 A1 · Owner: Delaney, George Joseph · Inventors: Delaney, George Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pump (1) for pumping a slurry comprises a pump housing (2) defining a pumping chamber (5) with an impeller (6) located therein for pumping the slurry from an axial inlet port (7) to a radial outlet port (8). The impeller (6) is carried on a pump shaft (10) which is in turn rotatably carried in a shaft carrier sleeve (18) in a carrier housing (12) which also carries the pump housing (2). The shaft carrier sleeve (18) and the pump shaft (10) are axially adjustable in the direction of the arrows A and B for adjusting an axial clearance gap (25) between the impeller (6) and the pump housing (2). A shaft seal (9) for sealing the pumping chamber (5) comprises a packed gland seal (42) …
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 April 30, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2020.
- 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.