Seal saver
CA 1306386 C · Owner: Dunford, Joseph Reginald · Inventors: Dunford, Joseph Reginald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention consists of a novel filter combination which is disposed and adapted to be placed within a centrifugal pump between the impeller and the mechanical seal or packing thereof, for the purpose of protecting the mechanical seal or packing therein from the contaminants in the liquid being pumped by the centrifugal pump, the device consists of a plurality of annular rings, joined by means, each having vents around the circumferences thereof. The rings are designed to utilize the angular motion of the fluid and the forces on the contaminants induced by the rotation of the impeller, shaft and seal of the centrifugal pump, to remove contaminants from the fluids entering the area of the …
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
- Granted August 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 2009.
- 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.