Vortex counter flow dreding/pumping system
CA 1285961 C · Owner: Weinrib, Harry P. · Inventors: Weinrib, Harry P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A new and improved dredging method and apparatus including a pump (10, 10a) which forms a vortex pressurized stream of liquid within the pump and directs the stream down the inlet conduit (27) to discharge at the inlet (15) at which the momentum and energy of the traveling stream (30) breaks up the clay gravel or other material being dredged from the bed and swirls the same into a puree of solids and liquid which forms a thick viscous stream (31) which flows into the pump inlet and inlet conduit about the vortex stream. The vortex member runner (35) generates the vortex by being rotated at a high speed; for example in excess of, 1,200 rpm without cavitation. Preferably the pump, (10a) is …
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 July 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 9, 2008.
- 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.