Reverse system for water-jet propulsion personal watercraft

Abstract

A reverse system of a water-jet propulsion personal watercraft is disclosed. The reverse system typically includes a water jet pump configured to propel the watercraft, a reverse bucket disposed rearward of the water jet pump to be vertically pivotable and configured to receive water ejected rearward from the water jet pump and to direct the water substantially forward, and a pump cover configured to cover the water jet pump from below. The pump cover typically includes a restricting portion, and the reverse bucket typically includes a stopper. The restricting portion and the stopper typically are configured to contact each other to restrict upward pivot movement or downward pivot movement of the reverse bucket within a predetermined range.

1 . A reverse system of a water-jet propulsion personal watercraft, comprising: 
 a water jet pump configured to propel the watercraft;    a reverse bucket disposed rearward of the water jet pump to be vertically pivotable and configured to receive water ejected rearward from the water jet pump and to direct the water substantially forward; and    a pump cover configured to cover the water jet pump from below, wherein the pump cover includes a restricting portion, and the reverse bucket includes a stopper, the restricting portion and the stopper being configured to contact each other to restrict upward pivot movement or downward pivot movement of the reverse bucket within a predetermined range.    
   
   
       2 . The reverse system of a water-jet propulsion personal watercraft according to  claim 1 , wherein the pump cover further includes a mounting portion to which the reverse bucket is pivotally mounted.  
   
   
       3 . The reverse system of a water-jet propulsion personal watercraft according to  claim 2 , wherein the restricting portion is integral with the mounting portion.  
   
   
       4 . The reverse system of a water-jet propulsion personal watercraft according to  claim 3 , wherein the reverse bucket has a substantially bowl-shaped base portion, the mounting portion includes mounting portions vertically provided on an upper surface of the pump cover to be located at right and left positions inward of the base portion of the reverse bucket, and the stopper of the reverse bucket is configured to protrude inward from an inner wall of the base portion.  
   
   
       5 . The reverse system of a water-jet propulsion personal watercraft according to  claim 1 , wherein the pump cover has a mounting portion configured to pivotally mount the reverse bucket, and the reverse bucket is pivotally mounted by the mounting portion at a position lower than a center line substantially at the center of a flow cross-sectional area of water ejected from the water jet pump.  
   
   
       6 . The reverse system of a water-jet propulsion personal watercraft according to  claim 5 , wherein the reverse bucket includes a substantially bowl-shaped base portion, and a flange portion configured to extend outward and rearward in a longitudinal direction of the body from a rear end of the base portion, and wherein the flange portion is coupled to the base portion to form an angle larger than 180 degrees between an inner wall of the flange portion and an inner wall of the base portion.