| Patent Number |
Title Of Patent |
Date Issued |
| 5893703 |
Pump shaft sealing system |
April 13, 1999 |
| For a pump that produces a negative pressure in a pump casing, a shaft seal system comprises a positive flow of air into the seal system to flow about shaft seals to counteract the negative pressure otherwise being communicated thereto from within the pump casing. The seals engage the |
| 4914841 |
Dredging with a pressurized, rotating liquid stream |
April 10, 1990 |
| An apparatus for dredging using a pump which forms a highly pressurized, rotating stream of liquid which is directed down the inlet conduit to a discharge and the momentum and energy of the rotating stream is transferred to the solids and liquids, suspending the solids to agitate and |
| 4815929 |
Eddy pump |
March 28, 1989 |
| A method and apparatus for pumping liquid includes a pump casing with a vortex generating member which generates a swirling column of liquid which swirls about a central axis and which is directed through the pump inlet to discharge into the ambient body of liquid at which its energy is |
| 4792275 |
Pump construction |
December 20, 1988 |
| A pump is provided within a vortex generator having a plurality of equally spaced blades which rotate in a pump casing to form a nucleus of fluid in the shape of an ellipsoid having an upper tapered end and a lower tapered end with a thicker central section at the blades. Fluid flows in |
| 4776753 |
Method of and apparatus for pumping viscous fluids |
October 11, 1988 |
| A method and apparatus for pumping liquid includes a pump casing with a vortex generating member which generates a swirling column of liquid which swirls about a central axis and which is directed through the pump inlet to discharge into the ambient body of liquid at which its energy is |
| 4596511 |
Eddy pump |
June 24, 1986 |
| A method and apparatus for pumping liquid includes a pump casing with a vortex generating member which generates a swirling column of liquid which swirls about a central axis and which is directed through the pump inlet to discharge into the ambient body of liquid at which its energy is |
