Jet propulsion watercraft

Patent metadata

Field	Value
Publication number	US-9783277-B2
Application number	US-201615190247-A
Country	US
Kind code	B2
Filing date	Jun 23, 2016
Priority date	Sep 20, 2013
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

A jet propulsion watercraft includes a vessel body, a steering nozzle, and a bucket. The steering nozzle includes a jet port from which a jet of water is ejected to propel the vessel body. The bucket is configured to move to a retracted position away from the jet of water ejected from the jet port and a jet receiving position to receive the jet of water ejected from the jet port. The bucket includes a right opening, a left opening, a first opening, and a second opening spaced apart from the first opening. The jet of water flows rightward from the right opening, leftward from the left opening, and rearward from the first opening and the second opening when the bucket is located in the jet receiving position. The first opening is located at least partially rightward of a right end of the jet port. The second opening is located at least partially leftward of a left end of the jet port.

First claim

What is claimed is:

1. A jet propulsion watercraft comprising:
a vessel body;
a steering nozzle that pivots right and left, the steering nozzle including a jet port from which a jet of water is ejected to propel the vessel body; and
a bucket that moves to a retracted position spaced away from the jet of water ejected from the jet port and to a jet receiving position to receive the jet of water ejected from the jet port; wherein
the bucket includes a rear plate portion, a right plate portion, a left plate portion, a right opening, a left opening, a first opening, and a second opening;
the rear plate portion is disposed rearward of the steering nozzle and directs the jet of water at least in a right-and-left direction when the bucket is located in the jet receiving position;
the right plate portion extends forward from a right end portion of the rear plate portion;
the left plate portion extends forward from a left end portion of the rear plate portion;
the right opening is in the right plate portion;
the left opening is in the left plate portion;
the first opening is in either the rear plate portion or the right plate portion;
the first opening is perpendicular or substantially perpendicular to the right opening;
the second opening is in either the rear plate portion or the left plate portion and is spaced apart from the first opening;
the second opening is perpendicular or substantially perpendicular to the left opening;
the first opening is located at least partially rightward of a right end of the jet port; and
the second opening is located at least partially leftward of a left end of the jet port;
the jet of water ejected from the jet port flows rightward from the right opening and flows rearward from the first opening when the bucket is located in the jet receiving position and the steering nozzle is pivoted right; and
the jet of water ejected from the jet port flows leftward from the left opening and flows rearward from the second opening when the bucket is located in the jet receiving position and the steering nozzle is pivoted left.

2. The jet propulsion watercraft according to claim 1 , wherein
the right plate portion includes a right plate extending to the right end portion of the rear plate portion and a right tube protruding rightward from the right plate;
the left plate portion includes a left plate extending to the left end portion of the rear plate portion and a left tube protruding leftward from the left plate;
the right tube includes the right opening and the first opening therein; and
the left tube includes the left opening and the second opening therein.

3. The jet propulsion watercraft according to claim 1 , wherein
the first opening is located at least partially in an ejection direction of the jet of water ejected from the steering nozzle when the steering nozzle is pivoted to a rightmost angle; and
the second opening is located at least partially in an ejection direction of the jet of water ejected from the steering nozzle when the steering nozzle is pivoted to a leftmost angle.

4. The jet propulsion watercraft according to claim 1 , wherein the rear plate portion causes the jet of water ejected from the steering nozzle to flow in the right-and-left direction rather than in an up-and-down direction.

5. The jet propulsion watercraft according to claim 1 , wherein the rear plate portion includes an inner surface opposed to the steering nozzle when the bucket is located in the jet receiving position, and the inner surface includes a right recess extending towards the right opening and a left recess extending towards the left opening.

6. The jet propulsion watercraft according to claim 1 , wherein the rear plate portion includes a rear plate opposed to the steering nozzle when the bucket is located in the jet receiving position and a lower rib protruding forward from a lower end portion of the rear plate.

7. The jet propulsion watercraft according to claim 1 , wherein a center of the right opening and a center of the left opening are located at a same height as a center of the jet port of the steering nozzle when the rear plate portion is located directly rearward of the steering nozzle.

8. The jet propulsion watercraft according to claim 1 , wherein the first opening is a hole, and the second opening is a hole.

9. The jet propulsion watercraft according to claim 1 , wherein the first opening is a cutout extending to the right opening, and the second opening is a cutout extending to the left opening.

Assignees

• Yamaha Motor Co Ltd

Inventors

• Kaneko Yoshiyuki
• Suzuki Masaru

Classifications

• B63H11/11 Primary

  with bucket or clamshell-type reversing means · CPC title

• B63H11/113

  Pivoted outlet · CPC title

• B63B35/731

  Operations & Transport · mapped topic

• B63H11/02

  the propulsive medium being ambient water · CPC title

• B63B34/10

  Power-driven personal watercraft, e.g. water scooters (water jet propulsion B63H11/00; jet steering B63H25/46); Accessories therefor · CPC title