Mechanism for use in conjunction with the intake opening of a water jet propelled vehicle

Claim 1

IN COMBINATION, A BOAT HULL HAVING A LONGITUDINAL AXIS AND A BOTTOM PROVIDED WITH AN INTAKE PORT, AN ENGINE MOUNTED IN SAID HULL, A PUMP MOUNTED IN SAID HULL AND HAVING INLET AND EXHAUST DUCTS, SAID PUMP BEING OPERATIVELY CONNECTED TO SAID ENGINE AND SAID INLET DUCT BEING REGISTERED WITH SAID INTAKE PORT, MENS INCLUDING SAID EXHAUST DUCT FOR PROPELLING SAID HULL IN RESPONSE TO OPERATION OF SAID ENGINE AND PUMP, SAID PORT HAVING FORWARD AND AFT EDGES EXTENDING TRANSVERSELY OF SAID HULL AND OPPOSITE LATERAL EDGES EXTENDING LONGITUDINALLY OF SAID HULL, TWO ELONGATED SPACED APART AND PARALLEL KEEL MEMBERS MOUNTED ON AND DEPENDING FROM SAID BOTTOM, SAID KEEL MEMBERS EXTENDING LONGITUDINALLY OF SAID HULL ON OPPOSITE SIDES, RESPECTIVELY, OF SAID PORT, SAID KEEL MEMBERS BEING ADJACENT TO THE RESPECTIVE ONES OF SAID LATERAL EDGES, SAID KEEL MEMBERS EXTENDING FOR AT LEAST THE LONGITUDINAL DISTANCE OF SAID PORT AND DEFINING THE OPPOSITE SIDES OF AN OPEN SPACE FREE OF TANGIBLE STRUCTURE THAT PROJECTS BENEATH SAID PORT, SAID SPACE HAVING AN OPEN FORWARD END, AN OPEN AFT END AND AN OPEN BOTTOM COMMUNICATING WITH SAID SPACE, EACH OF SAID KEEL MEMBERS BEING IMPERVIOUS TO WATER AND HAVING A SURFACE FACING THE OTHER OF SAID KEEL MEMBERS, WHEREBY WATER IS DEFLECTED INTO SAID PORT IN RESPONSE TO TURNING MOTION OF SAID HULL.