Watercraft suspension

• US 6,892,666 B1
• Filed: 02/24/2003
• Issued: 05/17/2005
• Est. Priority Date: 02/22/2002
• Status: Expired due to Fees

• Current Assignee: Bombardier Recreational Products Incorporated (Bombardier Incorporated)
• Original Assignee: Bombardier Recreational Products Incorporated (Bombardier Incorporated)
• Inventors: Plante, Renald, Berthiaume, Yves
• Primary Examiner(s): Morano, S. Joseph
• Assistant Examiner(s): Vasudeva, Ajay
• Application Number:
  US10/370,573
• Time in Patent Office: 813 Days
• Field of Search: 114/55.5, 114/55.54, 114/55.55, 114/55.56, 114/55.57, 114/343, 114/363, 114/364, 440/38, 440/53, 440/63, 440/83, 440/111, 440/112, 464/50, 464/172, 464/173
• US Class Current: 114/363
• CPC Class Codes: B63B 34/10 Power-driven personal watercraft, e.g. water scooters water jet propulsion B63H11/00; jet steering B63H25/46; Accessories therefor
• CPC Class Codes: B63B 39/005 Equipment to decrease ship's vibrations produced externally to the ship, e.g. wave-induced vibrations propulsion mountings for anti-vibration purposes B63H21/30; vibration dampers, suppression of vibration in systems F16F

Abstract

A watercraft has a pivoting, shock absorbing component that absorbs forces applied to its hull. The watercraft includes a hull, a deck coupled to the hull, an engine, and a jet propulsion system movably coupled to the engine. In one embodiment, a forward hull portion couples to the deck and a rearward hull portion movably couples to the deck and/or the forward hull portion. The jet propulsion system mounts to the rearward hull portion, while the engine mounts to the deck. A suspension element is disposed between the hull rear portion and either the deck or the hull forward portion. In another embodiment, the hull and deck are movably coupled to each other.

Claims

1. A watercraft comprising:

a deck;

a hull moveably coupled to the deck;

a steering handle operatively connected to the deck;

an engine substantially immovably coupled to the deck;

a jet propulsion unit supported by the hull, including an inlet for taking in water, an impeller assembly for generating a pressurized stream of water, an outlet for discharging the pressurized stream of water, and a movable element positioned at the outlet for selectively directing the pressurized stream of water, wherein the movable element is operatively connected to the steering handle and directs the pressurized stream of water based on signals from the steering handle; and

a suspension system suspending the deck on the hull and configured so as to be only operative in a vertical plane containing the longitudinal axis of the vehicle.

2. The watercraft of claim 1, further comprising an engine compartment disposed between the forward portion and the deck, the engine being disposed within the engine compartment.

3. The watercraft of claim 1, further comprising an articulated drive shaft operatively connecting the engine to the jet propulsion system, wherein the drive shaft comprises a first drive shaft section coupled to the engine, a second drive shaft section coupled to the jet propulsion system, and an articulating coupling that couples the first and second drive shaft sections.

4. The watercraft of claim 1, wherein the suspension element is disposed between a rearward portion of the hull and a rearward portion of the deck.

5. The watercraft of claim 1, wherein a forward portion of the hull is pivotally coupled to a forward portion of the deck.

6. The watercraft of claim 1, wherein the suspension system is disposed between a forward portion of the hull and a forward portion of the deck.

7. The watercraft of claim 1, wherein:

the suspension element comprises a first suspension system, which is disposed between a rearward portion of the hull and a rearward portion of the deck; and

the watercraft further comprises a second suspension system disposed between a forward portion of the hull and a forward portion of the deck.

8. The watercraft of claim 7, wherein the second suspension system comprises a flexible beam coupled to the forward portion of the hull and the forward portion of the deck.

9. The watercraft of claim 7, wherein the first suspension system further comprising:

a swing arm having first and second spaced pivot points, the first pivot point being pivotally connected to the rearward portion of the hull, the second pivot point being pivotally connected to the rearward portion of the deck; and

a first shock absorber extending between the swing arm and the deck.

10. The watercraft of claim 1, further comprising an internal frame coupled to the deck at a position beneath the deck, wherein the engine is supported by the internal frame.

11. The watercraft of claim 1, further comprising a drive shaft operatively connecting the engine to the jet propulsion system, wherein the drive shaft comprises a first drive shaft section coupled to the engine, a second drive shaft section coupled to the jet propulsion system, and an extendable coupling that couples the first and second drive shaft sections.

12. The watercraft of claim 1, further comprising a gas tank substantially immovably coupled to the deck.