Water jet motor for boats

Claim 1

A JET PUMP OF THE TYPE ADAPTED FOR USE WITH AN OUTBOARD BOAT MOTOR TO DRIVE A BOAT HAVING A BOTTOM THROUGH WATER COMPRISING A FLOW THROUGH CASING HAVING A DOWNSTREAM END PORTION WHICH IS TAPERED OUTWARDLY IN THE DOWNSTREAM DIRECTION, A MIXED IMPELLER ADAPTED TO ROTATE ABOUT ITS AXIS, A SUBSTANTIAL PORTION OF SAID IMPELLER BEING ACCOMMODATED IN SAID CASING END PORTION FOR ROTATION THEREIN, A RECUPTERATOR SECTION SECURED TO SAID END PORTION TO GATHER THE WATER FROM THE IMPELLER, A CONVERGING NOZZLE COMMUNICATING WITH SAID RECUPERATOR WHEREBY THE RECUPERATOR DIRECTS THE WATER INTO SAID NOZZLE, SAID NOZZLE DISPOSED AT SUBSTANTIALLY RIGHT ANGLES WITH RESPECT TO THE AXIS OF THE IMPELLER, AND SKIMMING INTAKE MEANS CARRIED AT THE OTHER END OF SAID CASING, SAID SKIMMING INTAKE MEANS PROVIDING A SKIMMING SURFACE WHICH IS ESSENTIALLY A CONTINUATION OF THE BOTTOM OF THE BOAT TO SKIM THE WATER WHEN THE BOAT IS IN MOTION WITH THE BOTTOM RIDING ON THE SURFACE OF THE WATER.