Water sports performance system and method

• US 6,044,788 A
• Filed: 03/09/1998
• Issued: 04/04/2000
• Est. Priority Date: 03/09/1998
• Status: Expired due to Term

• Current Assignee: Correct Craft IP Holdings LLC (Correct Craft Incorporated)
• Original Assignee: Correct Craft Incorporated
• Inventors: Snook, William N., Larson, Borden M.
• Primary Examiner(s): BASINGER, SHERMAN D
• Application Number:
  US09/037,172
• Time in Patent Office: 757 Days
• Field of Search: 114/125, 114/242, 114/253, 114/254, 114/255
• US Class Current: 114/253
• CPC Class Codes: B63B 34/00 Vessels specially adapted for water sports or leisure; Body-supporting devices specially adapted for water sports or leisure water sports boards B63B32/00; swimming frameworks A63B35/00; propulsion arrangements actuated by muscle power B63H16/00
• CPC Class Codes: B63B 34/67 Connection means on the towing watercraft, e.g. pylons, side poles or winches

Abstract

Aerial characteristics in a wakeboard performance are improved with a vessel having a skeletal frame including starboard and port rigid vertical support structures fitted to opposing sides of the vessel with a horizontal bridging portion extending between the structures for attaching a tow rope. Further, ballast tanks are fitted onboard and only aft amidships of the vessel, at or above the waterline. The ballast tanks are filled with water during movement of the vessel using a water scoop which extracts water from the body of water upon which the vessel operates and forces the water into the ballast tanks during movement of the vessel through the body of water, weighting down the stern, thus lowering the vessel into the body of water and affecting the wake created by the vessel. By controlling the amount of water carried by the tanks, a desirable wake is formed for use by the performer. The weighting is controlled by controlling air venting to the ballast tanks. The tanks are emptied while the vessel is stopped, permitting them to drain.

Claims

1. A water sports system for improving aerial characteristics of a performance by a performer using a water sports implement, the system comprising:

a vessel behind which the performer is to be towed, the vessel including a bow, a stern, opposing starboard and port sides between the bow and the stern, and an operator station located amidships between the opposing sides;

a vertical support unit fitted to the vessel at a location proximate the operator station and positioned amidships, the vertical support unit having an upper portion at a height substantially above the level of the operator station and adapted for securing a tow rope thereto;

a tow rope attached to the upper portion of the vertical support unit for towing the performer therefrom;

first and second ballast tanks fitted onboard at opposing locations proximate the starboard and port sides, respectively, and extending toward the stern from only aft amidships; and

extracting means in fluid communication with the body of water for forcing water into the first and second ballast tanks for weighting down the vessel and controlling a wake created by the vessel.

2. The system according to claim 1, wherein the vertical support unit comprises:

a first relatively rigid vertical support structure fitted to the starboard side at the location proximate the operator station;

a second relatively rigid vertical support structure fitted to the port side at the location proximate the operator station; and

a generally horizontal bridging portion extending between upper portions of the first and second vertically extending support structures at the height substantially above the level of the operator station.

3. The system according to claim 1, wherein the vertical support unit comprises:

a first relatively rigid U-shaped support structure fitted across the beam of the vessel at a point forward the operator station and extending substantially above the level of the operator station;

a second relatively rigid U-shaped support structure fitted across the beam of the vessel at a point aft the operator station and substantially above the level of the operator station; and

at least one longitudinally extending relatively rigid bar attached between the forward and aft U-shaped structures, which U-shaped structures and the at least one rigid bar, in combination, form a skeletal frame for attaching the tow rope thereto.

4. The system according to claim 1, wherein the vertical support unit comprises a pylon extending from the floor of the vessel and having an upper portion adapted for securing a tow rope thereto.

5. The system according to claim 1, further comprising a tow rope connecting element attached to the upper portion of the vertical support unit for attaching the tow rope thereto.

6. The system according to claim 1, wherein a lower most portion of each of the first and second ballast tanks is fitted at or above the waterline of the vessel when the tanks are substantially empty of water.

7. The system according to claim 1, wherein each of the first and second ballast tanks comprises an enclosed tank having an opening for venting air to the enclosed tank.

8. The system according to claim 7, further comprising valve means operable with the opening for controlling air venting to the ballast tank.

9. The system according to claim 7, further comprising:

an opening within each of the starboard and port tanks for venting air to each tank; and

valve means operable with the openings for controlling air venting to each of the tanks.

10. The system according to claim 1, wherein the extracting means comprises a water scoop positioned for extracting the water from the body of water as the vessel moves through the body of water.

11. The system according to claim 1, wherein the extracting means comprises a pump.

12. The system according to claim 1, further comprising attaching means for attaching the vertical support unit to the vessel, so as to permit the unit to be rotated so that the vessel may pass underneath a bridge or into a boat house.

13. The system according to claim 1, wherein each of the starboard and port ballast tanks comprises a generally L-shaped tank having a first elongated leg portion fitted beneath quarter gunwales of the vessel and a second leg portion fitted along an inboard side of the transom of the vessel.

14. A water sports system for improving aerial characteristics of a performance by a performer using a water sports implement, and being towed behind a vessel having a bow, a stern and an operator station between opposing sides, the system comprising:

a vertical support unit adapted to be fitted to the vessel, the vertical support unit having an upper portion for extending to a height substantially above the level of the operator station and adapted for securing a tow rope thereto;

first and second enclosed ballast tanks adapted to be fitted onboard along opposing starboard and port sides and only aft amidships of the vessel, the first and second ballast tanks having a length dimension for extending from amidships to proximate the stern of the vessel;

extracting means in fluid communication with the body of water for forcing water into each of the first and second ballast tanks for weighting down the vessel and controlling a shape of a wake created by the vessel; and

valve means operable between the extracting means and the first and second enclosed ballast tanks for controlling air venting to the ballast tanks and thus flow of water into each tank.

15. The system according to claim 14, wherein the vertical support unit comprises:

a first relatively rigid vertical support structure adapted for fitting to the starboard side of the vessel at the location proximate the operator station;

a second relatively rigid vertical support structure adapted for fitting to the port side of the vesssel at the location proximate the operator station; and

a generally horizontal bridging portion extending between upper portions of the first and second vertically extending support structures at the height substantially above the level of the operator station.

16. The system according to claim 14, wherein the vertical support unit comprises:

a first relatively rigid U-shaped support structure adapted for fitting across the beam of the vessel at a point forward the operator station and extending substantially above the level of the operator station;

a second relatively rigid U-shaped support structure adapted for fitting across the beam of the vessel at a point aft the operator station and extending substantially above the level of the operator station; and

at least one longitudinally extending relatively rigid bar attached between the forward and aft U-shaped structures, which U-shaped structures and the at least one rigid bar, in combination, form a skeletal frame for attaching the tow rope thereto.

17. The system according to claim 14, wherein the vertical support unit comprises a pylon extending from the floor of the vessel and having an upper portion adapted for securing a tow rope thereto.

18. The system according to claim 14, further comprising a tow rope connecting element attached to the upper portion of the vertical support unit for attaching the tow rope thereto.

19. The system according to claim 14, wherein the extracting means comprises a water scoop positioned for extracting the water from the body of water as the vessel moves through the body of water.

20. The system according to claim 14, wherein the extracting means comprises a pump.

21. The system according to claim 14, further comprising attaching means for attaching the vertical support unit to the vessel, so as to permit the unit to be rotated so that the vessel may pass underneath a bridge or into a boat house.

22. The system according to claim 14, wherein each of the first and second enclosed ballast tanks comprises a generally L-shaped tank having a first elongated leg adapted for fitting beneath quarter gunwales of the vessel and a second leg adapted for fitting along an inboard side of the transom of the vessel.

23. A water sports system for improving aerial characteristics of a performance by a performer using a water sports implement, the system comprising:

a vessel behind which the performer is to be towed, the vessel including a bow, a stern, opposing starboard and port sides between the bow and the stern and an operator station located amidships between the opposing sides;

a skeletal frame including a first relatively rigid vertical support structure fitted to the starboard side of the vessel at a location proximate the operator station, a second relatively rigid vertical support structure fitted to the port side of the vessel at a location proximate the operator station, and a generally horizontal bridging portion extending between upper portions of the first and second vertically extending support structures at a height substantially above the level of the operator station, the skeletal frame adapted for securing a tow rope thereto;

a tow rope attached to the upper portion of the skeletal frame for towing the performer therefrom;

a ballast tank fitted onboard and only aft amidships of the vessel; and

a water scoop in fluid communication with the body of water and operable with the ballast tank for forcing water into the ballast tank and weighting down the vessel, thus lowering the vessel aft portion and controlling a wake created by the vessel while permitting planing thereof, the water scoop extracting the water from the body of water as the vessel moves through the body of water.

24. The system according to claim 23, further comprising a tow rope connecting element attached to the upper portion of the skeletal frame for attaching the tow rope thereto.

25. The system according to claim 23, wherein a lower most portion of the ballast tank is fitted at or above the waterline of the vessel when the tank is substantially empty of water.

26. The system according to claim 23, wherein the ballast tank includes an enclosed tank having an opening for venting air to the enclosed tank.

27. The system according to claim 26, further comprising valve means operable with the opening for controlling air venting to the ballast tank.

28. The system according to claim 23, further comprising a pump in fluid communication with the water scoop.

29. The system according to claim 23, wherein the ballast tank comprises starboard and port enclosed ballast tanks.

30. The system according to claim 29, wherein each of the starboard and port enclosed ballast tanks comprises a generally L-shaped tank portion having a first elongated leg fitted beneath quarter gunwales of the vessel and a second leg fitted along an inboard side of the transom of the vessel.

31. The system according to claim 30, further comprising:

an opening within each of the starboard and port tanks for venting air to each tank; and

valve means operable with the openings for controlling air venting to each of the tanks.

32. A water sports system for improving aerial characteristics of a performance by a performer using a water sports implement, the system comprising:

a vessel behind which the performer is to be towed, the vessel including a bow, a stern, opposing starboard and port sides between the bow and the stern, and an operator station between opposing sides;

a tow rope attached to the vessel for towing the performer therefrom;

first and second ballast tanks fitted onboard at opposing locations proximate the starboard and port sides and only aft amidships of the vessel, wherein a lower most portion of each of the first and second ballast tanks is fitted at or above the waterline of the vessel when the tanks are substantially empty of water;

a water scoop in fluid communication with the body of water for forcing water into each of the first and second enclosed ballast tanks for weighting down the vessel, thus lowering the vessel into the body of water and controlling a wake created by the vessel, the water scoop extracting the water from the body of water as the vessel moves through the body of water; and

valve means operable between the extracting means and the first and second enclosed ballast tanks for controlling air venting to the ballast tanks and thus flow of water into each tank.

33. The system according to claim 32, wherein each of the first and second enclosed ballast tanks comprises a generally L-shaped tank having a first elongated leg fitted beneath quarter gunwales of the vessel and a second leg fitted along an inboard side of the transom of the vessel.

34. A method for improving aerial characteristics of a performance by a performer using a water sports implement and being towed behind a vessel, the method comprising the steps of:

providing a vessel behind which the performer is to be towed, the vessel including a bow, a stern opposing starboard and port sides between the bow and the stern and an operator station located amidships between the opposing sides;

fitting a vertical support unit to the vessel at a location proximate the operator station, the vertical support unit having an upper portion at a height substantially above the level of the operator station and adapted for securing a tow rope thereto;

attaching a tow rope to the upper portion of the vertical support unit for towing the performer therefrom;

fitting first and second ballast tanks onboard at opposing locations proximate the starboard and port sides, respectively, and only aft amidships of the vessel;

towing the performer over a body of water;

extracting water from the body of water and depositing the water into the first and second ballast tanks for weighting down the vessel and lowering the vessel into the body of water; and

forming a desired wake to be used by the performer by controlling an amount of the water to be deposited into the first and second ballast tanks.

35. The method according to claim 34, wherein the vertical support unit fitting step comprises the steps of:

fitting a first relatively rigid vertical support structure to the starboard side at the location proximate the operator station;

fitting a second relatively rigid vertical support structure to the port side at the location proximate the operator station; and

extending a generally horizontal bridging portion between upper portions of the first and second vertically extending support structures at the height substantially above the level of the operator station.

36. The method according to claim 34, wherein the vertical support unit fitting step comprises the steps of:

fitting a first relatively rigid U-shaped support structure across the beam of the vessel at a point forward the operator station and extending substantially above the level of the operator station;

fitting a second relatively rigid U-shaped support structure across the beam of the vessel at a point aft the operator station and extending substantially above the level of the operator station; and

attaching at least one longitudinally extending relatively rigid bar between the forward and aft U-shaped structures, which U-shaped structures and the at least one rigid bar, in combination, form a skeletal frame for attaching the tow rope thereto.

37. The method according to claim 34, wherein the vertical support unit fitting step comprises the step of extending a pylon from the floor of the vessel, the pylon having an upper portion adapted for securing a tow rope thereto.

38. The method according to claim 34, further comprising a tow rope connecting element attached to the upper portion of the vertical support unit for attaching the tow rope thereto.

39. The method according to claim 34, wherein the ballast tanks fitting step includes fitting a lower most portion of each of the first and second ballast tanks at or above the waterline of the vessel when the tanks are substantially empty of the water.

40. The method according to claim 34, wherein each of the ballast tanks comprises an enclosed tank having an opening for venting air thereto.

41. The method according to claim 40, further comprising the step of controlling air venting to each of the ballast tanks for controlling the water depositing step.

42. The method according to claim 34, wherein the extracting step comprises the step of positioning a water scoop for extracting the water from the body of water as the vessel moves through the body of water.

43. The method according to claim 34, wherein the extracting step comprises the step of pumping the water into the ballast tank.

44. The method according to claim 34, further comprising the step of attaching the vertical support unit to the vessel so as to permit the unit to be rotated for passing underneath a bridge or into a boat house.

45. The method according to claim 34, wherein each of the first and second enclosed ballast tanks comprises a generally L-shaped tank having a first elongated leg portion fitted beneath quarter gunwales of the vessel and a second leg portion fitted along an inboard side of the transom of the vessel.

46. The method according to claim 45, further comprising the steps of:

venting each of the first and second tanks to air; and

controlling air venting to each of the tanks.

47. A method for improving aerial characteristics of a performance by a performer using a water sports implement, while maintaining stability for the vessel, the method comprising the steps of:

providing a vessel behind which the performer is to be towed, the vessel including a bow, a stern, opposing starboard and port sides between the bow and the stern, and an operator station located amidships between the opposing sides;

fitting a skeletal frame at a location proximate the operator station and extending thereabove, the skeletal frame including a first relatively rigid vertical support structure fitted to the starboard side of the vessel abeam the operator station, a second relatively rigid vertical support structure fitted to the port side of the vessel abeam the operator station, and a generally horizontal bridging portion extending between upper portions of the first and second vertically extending support structures at a height substantially above the level of the operator station, the skeletal frame adapted for securing a tow rope thereto;

attaching a tow rope to the upper portion of the skeletal frame for towing the performer therefrom;

fitting a ballast tank onboard and only aft amidships in the vessel;

placing a water scoop in fluid communication with the body of water for forcing water into the ballast tank;

towing the performer by moving the vessel through the body of water; and

weighting down the vessel with a desired amount of water deposited into the ballast tank, thus lowering the vessel into the body of water and controlling a wake created by the vessel, the water scoop extracting the water from the body of water as the vessel moves through the body of water.

48. The method according to claim 47, wherein the ballast tank fitting step comprises the step of positioning a lower most portion of the ballast tank at or above the waterline of the vessel when the tank is substantially empty of water.

49. The method according to claim 47, wherein the ballast tank includes an enclosed tank having an opening for venting air to the enclosed tank.

50. The method according to claim 49, further comprising the step of controlling air venting to the ballast tank for affecting water flow into the tank.

51. The method according to claim 47, wherein the ballast tank fitting step comprises the step of fitting starboard and port enclosed ballast tanks.

52. The method according to claim 51, wherein each of the starboard and port enclosed ballast tanks comprises a generally L-shaped tank portion having a first elongated leg fitted beneath quarter gunwales of the vessel and a second leg fitted along an inboard side of the transom of the vessel.

53. The method according to claim 52, further comprising the steps of:

venting each of the starboard and port tanks to air; and

controlling air venting to each of the tanks.

54. A method for improving aerial characteristics of a performance by a performer using a water sports implement, the method comprising the steps of:

providing a vessel behind which the performer is to be towed, the vessel including a bow, a stern, opposing starboard and port sides between the bow and the stern, and an operator station between opposing sides;

attaching a tow rope to the vessel for towing the performer therefrom;

fitting first and second enclosed ballast tanks onboard at opposing locations proximate the starboard and port sides, respectively, and only aft amidships in the vessel and positioned such that a lowermost portion of each of the first and second ballast tanks is fitted at or above the waterline of the vessel when each of the first and second tanks are substantially empty of water;

placing a water scoop in fluid communication between the first and second tanks and the body of water for forcing water into each of the ballast tanks as the vessel moves through the body of water;

moving the vessel through the body of water;

towing the performer;

extracting water from the body of water and depositing an amount of water into the ballast tanks, thus adding weight aft;

controlling the extracting and thus flow and amount of water deposited into the enclosed tanks by controlling venting of air to the tank; and

shaping the wake for use by the performer.

55. The method according to claim 54, wherein the ballast tank comprises starboard and port enclosed ballast tanks.

56. The method according to claim 54, wherein each of the first and second enclosed ballast tanks comprises a generally L-shaped tank having a first elongated leg portion fitted beneath quarter gunwales of the vessel and a second leg portion fitted along an inboard side of the transom of the vessel.