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PROPELLER JET LIMITED
| PROPELLER JET LIMITED Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20090022576 | IMPELLER DRIVE FOR A WATER JET PROPULSION UNIT - A water propulsion unit having an intake housing, a pump housing and an outlet with two spaced apart counter rotating impellers being located in the pump housing. The impeller blades on one impeller have an opposite pitch to the blades of the second impeller. The impellers are configured so that one of the impellers will impart less energy to the water as it passes the blades of the impeller than the second impeller. | 01-22-2009 |