US20070039536A1 - Watercraft with sound suppressed stepped hull - Google Patents
Watercraft with sound suppressed stepped hull Download PDFInfo
- Publication number
- US20070039536A1 US20070039536A1 US11/507,404 US50740406A US2007039536A1 US 20070039536 A1 US20070039536 A1 US 20070039536A1 US 50740406 A US50740406 A US 50740406A US 2007039536 A1 US2007039536 A1 US 2007039536A1
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- US
- United States
- Prior art keywords
- watercraft
- hull
- dimples
- sound suppressing
- upper stepped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
- B63B17/0081—Vibration isolation or damping elements or arrangements, e.g. elastic support of deck-houses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Definitions
- the subject of the invention relates to watercraft, particularly of the type including molded and or fiberglass hulls.
- Watercraft hull design is a complicated technology as multiple objectives are trying to be met at the same time.
- Chines can also be used as a means of providing an air pocket along the other edges of the hull which again provide an aerodynamic lift to the vessel hull. Due to the fact that the vessel is configured for planing, the hull must also include means for stabilizing the boat and allowing for the ability to turn the boat. For this purpose a combination of strakes and turning fins are provided which can cut into the water allowing for stability and a tight turning radius. Examples of these various vessel hull designs are shown in U.S. Pat. Nos. 5,452,676; 6,666,160; and 6,923,137, all of which are incorporated herein by reference.
- an acoustical chamber has been formed which can resonate noise from beneath the watercraft. That is, an acoustical chamber has been formed by a combination of the surfaces defined by the waterline, the stepped portion, the chines, and or the turning fins. While this acoustical chamber is not detrimental to the performance of the watercraft in use, it has however, increased to the point of being an annoyance to the driver and the passengers.
- the present embodiment is defined by a watercraft, comprising a deck and a hull, the hull being stepped intermediate a length of the hull to form an upper stepped surface.
- the upper stepped surface comprises sound suppressing dimples profiled to cancel an acoustical wave standing in the area adjacent the upper stepped surface.
- the watercraft may further comprise a longitudinally extending turning fin positioned adjacent to the upper stepped surface.
- the watercraft may also further comprise a rear chine portion.
- the rear chine portion extends along the outer edge of the upper stepped portion.
- the watercraft may also comprise a forward chine portion forward of the stepped portion.
- the sound suppressing dimples may be configured as concave dimples.
- the sound suppressing dimples may be configured as inverted concave frusto-conical sections.
- a watercraft comprises a deck and a hull, the hull being stepped intermediate a length of the hull to form an upper stepped surface.
- the upper stepped surface comprises sound suppressing means for canceling an acoustical wave standing in the area adjacent the upper stepped surface.
- the sound suppressing means may be configured as concave sound suppressing dimples.
- the sound suppressing dimples may be configured as inverted concave frusto-conical sections.
- the watercraft further comprises a longitudinally extending turning fin positioned adjacent to the upper stepped surface.
- the watercraft may also further comprising a rear chine portion.
- the rear chine portion may extend along the outer edge of the upper stepped portion.
- the watercraft may also comprise a forward chine portion forward of the stepped portion.
- the sound suppressing means may be configured as concave dimples.
- the sound suppressing dimples may be configured as inverted concave frusto-conical sections.
- a watercraft comprises a deck and a hull, the hull having a plurality of surfaces forming an acoustical chamber with the waterline.
- the hull comprises sound suppressing dimples profiled to cancel an acoustical wave standing in the chamber.
- the sound suppressing dimples may be configured as inverted concave frusto-conical sections.
- the watercraft may also further comprise a longitudinally extending turning fin positioned adjacent to the acoustical chamber.
- the hull may be stepped intermediate a length of the hull to form an upper stepped surface, where the upper stepped surface comprises the sound suppressing dimples.
- the watercraft may also further comprise a longitudinally extending turning fin positioned adjacent to the upper stepped surface.
- the watercraft may also further comprise a rear chine portion.
- the rear chine portion extends along the outer edge of the upper stepped portion.
- the watercraft may also comprise a forward chine portion, forward of said stepped portion.
- the sound suppressing means may be configured as concave dimples.
- the sound suppressing dimples may be configured as inverted concave frusto-conical sections.
- FIG. 1 is a side view of a typical watercraft shown from the starboard side;
- FIG. 2 is an underside view of the hull of the present embodiment
- FIG. 3 is a perspective view from the port side of the watercraft of FIG. 1 ;
- FIG. 4 is an end view from the aft end of the boat of the present embodiment
- FIG. 5 is an end view from the bow of the watercraft of the present invention.
- FIG. 6 is an underside perspective of the watercraft hull of the present invention taken from the starboard side;
- FIG. 7 is a view similar to that of FIG. 6 showing the hull inverted
- FIG. 8 is an enlarged view of the encircled portion shown in FIG. 7 ;
- FIG. 9 is a view similar to that of FIG. 8 taken from a different perspective
- FIG. 10 is a view showing the sounds suppression panel of the present embodiment.
- FIG. 11 is a cross sectional view through the sound suppression panel, at the position 11 - 11 of FIG. 10 , with the watercraft shown in the water;
- FIG. 12 shows an enlarged view of the encircled portion shown in FIG. 11 .
- the watercraft is shown generally at 2 and includes a deck portion 4 attached to a vessel hull 6 . It should be understood that these two units are typically constructed in separate halves and then joined together along a central seam. It should also be noted that these decks and hulls are typically molded, or made from fiberglass about a mold, however the actual construction is not material to the invention.
- the watercraft 2 further includes an aft portion 8 and a bow portion 10 , and as shown in FIG. 3 includes a port side 12 and a starboard side 14 .
- the vessel hull 6 further comprises a V shaped bottom portion 16 , and port side and starboard side chines 18 which includes a forward chine surface 20 ( FIG. 5 ) and a rearward chine surface 22 ( FIG. 22 ).
- Primary strake portions 24 also flank secondary strake portions 26 , as best shown in FIGS. 2 and 5 .
- a stepped portion 30 is defined which defines a stepped wall 32 ( FIG. 8 ) thereby defining surface 34 of hull 6 and an upper stepped surface 36 . This also defines an inner sidewall at 38 .
- the stepped portion 30 extends through chine 18 defining surface 39 which opens up on the side of the hull 6 .
- a turning fin 40 is also provided and is positioned on the rear chine surface 22 . Turning fin 40 includes a curved surface at 42 and an inner surface at 44 . As best shown in FIG. 9 , an opening 50 is defined between the stepped wall portions 32 , 39 and turning fin 40 is shown best in FIGS. 8 and 9 .
- the area of surface 36 bounded by stepped wall portion 32 , 39 ; wall 38 and inner surface 44 of turning fin 40 is provided with a sound suppression surface as shown generally at 60 .
- sound suppression device 60 is applied to surface 36 , with a contoured surface 62 , profiled to reside in close proximity to edge 32 , a portion 64 which resides in opening 50 , a curved surface 66 which tucks behind turning fin 40 and a plurality of openings 68 .
- the suppression surface is integrally molded into the hull, although it could be a separate panel, adhesively fixed onto the hull.
- FIGS. 10-12 the operation of the sound suppression device will now be described.
- FIG. 11 a cross sectional view is shown at a point when the watercraft 2 is planing.
- Surface 36 is shown raised above waterline WL, and the combination of the surfaces 36 , 22 , 44 and 32 ( FIG. 10 ) forms an acoustical chamber 90 beneath the watercraft.
- sound suppression apertures 68 are shaped frusto-conically to include inner conically shaped walls 70 with end walls 72 . Rather, as shown, panel 60 is provided along surface 36 , for the majority of the length that surface 36 is positioned above the water line WL. Thus sound waves that reflect off of panel 60 are cancelled.
- Some of the sound waves SW 1 reflect off of one portion of frusto-conical portions 70 defining a reflected sound wave RW 1 while other sound waves SW 2 reflect off of other side of frusto-conical portions 70 defining a reflected sound wave RW 2 . It should be appreciated that reflected waves RW 1 and RW 2 cancel each other out, deadening the sound.
- the sound suppression apertures are provided with diameters at the surface of approximately 1 ⁇ 8 to 1 ⁇ 4 inch in diameter. It should be apparent that other geometries could be applied to achieve the same sound suppressing results. It should also be appreciated that the number (or density) of the apertures and/or their geometry can be modified depending upon the frequency of the sound to be suppressed.
Abstract
A watercraft is disclosed, comprising a deck and a hull. where the hull is stepped intermediate a length of the hull to form an upper stepped surface. The upper stepped surface comprises sound suppressing dimples profiled to cancel an acoustical wave standing in the area adjacent the upper stepped surface. The watercraft has a longitudinally extending turning fin positioned adjacent to the upper stepped surface. The sound suppressing dimples are configured as inverted concave frusto-conical sections.
Description
- This application claims the benefit of U.S. Provisional Patent Application Ser. No. 60/709,877 filed Aug. 19, 2005, the complete disclosure of which is hereby expressly incorporated by reference.
- The subject of the invention relates to watercraft, particularly of the type including molded and or fiberglass hulls.
- Watercraft hull design is a complicated technology as multiple objectives are trying to be met at the same time. On one hand, it is desirable for the vessel to be able to cut through choppy water and other vessels' wakes, and at the same time, it is desirable for the subject watercraft to not create a significant wake in the event that it is pulling water-skiers. It is also desirable to provide an efficiency to the hull design such that the boat easily planes over the water rather than cuts through it. For this reason stepped hulls have become popular in the vessel hull designs which provide an aerodynamic pocket under the hull helping lift the boat out of the water upon its forward propulsion.
- Chines can also be used as a means of providing an air pocket along the other edges of the hull which again provide an aerodynamic lift to the vessel hull. Due to the fact that the vessel is configured for planing, the hull must also include means for stabilizing the boat and allowing for the ability to turn the boat. For this purpose a combination of strakes and turning fins are provided which can cut into the water allowing for stability and a tight turning radius. Examples of these various vessel hull designs are shown in U.S. Pat. Nos. 5,452,676; 6,666,160; and 6,923,137, all of which are incorporated herein by reference.
- Given all the various surfaces provided adjacent to the waterline another phenomena has been created, that is, an acoustical chamber has been formed which can resonate noise from beneath the watercraft. That is, an acoustical chamber has been formed by a combination of the surfaces defined by the waterline, the stepped portion, the chines, and or the turning fins. While this acoustical chamber is not detrimental to the performance of the watercraft in use, it has however, increased to the point of being an annoyance to the driver and the passengers.
- It is therefore an object of this embodiment to overcome the shortcomings presented.
- The present embodiment is defined by a watercraft, comprising a deck and a hull, the hull being stepped intermediate a length of the hull to form an upper stepped surface. The upper stepped surface comprises sound suppressing dimples profiled to cancel an acoustical wave standing in the area adjacent the upper stepped surface.
- The watercraft may further comprise a longitudinally extending turning fin positioned adjacent to the upper stepped surface. The watercraft may also further comprise a rear chine portion. The rear chine portion extends along the outer edge of the upper stepped portion. The watercraft may also comprise a forward chine portion forward of the stepped portion. The sound suppressing dimples may be configured as concave dimples. The sound suppressing dimples may be configured as inverted concave frusto-conical sections.
- In a further embodiment, a watercraft comprises a deck and a hull, the hull being stepped intermediate a length of the hull to form an upper stepped surface. The upper stepped surface comprises sound suppressing means for canceling an acoustical wave standing in the area adjacent the upper stepped surface.
- The sound suppressing means may be configured as concave sound suppressing dimples. The sound suppressing dimples may be configured as inverted concave frusto-conical sections. The watercraft further comprises a longitudinally extending turning fin positioned adjacent to the upper stepped surface. The watercraft may also further comprising a rear chine portion. The rear chine portion may extend along the outer edge of the upper stepped portion. The watercraft may also comprise a forward chine portion forward of the stepped portion. The sound suppressing means may be configured as concave dimples. The sound suppressing dimples may be configured as inverted concave frusto-conical sections.
- In yet another embodiment, a watercraft comprises a deck and a hull, the hull having a plurality of surfaces forming an acoustical chamber with the waterline. The hull comprises sound suppressing dimples profiled to cancel an acoustical wave standing in the chamber.
- The sound suppressing dimples may be configured as inverted concave frusto-conical sections. The watercraft may also further comprise a longitudinally extending turning fin positioned adjacent to the acoustical chamber. The hull may be stepped intermediate a length of the hull to form an upper stepped surface, where the upper stepped surface comprises the sound suppressing dimples. The watercraft may also further comprise a longitudinally extending turning fin positioned adjacent to the upper stepped surface. The watercraft may also further comprise a rear chine portion. The rear chine portion extends along the outer edge of the upper stepped portion. The watercraft may also comprise a forward chine portion, forward of said stepped portion. The sound suppressing means may be configured as concave dimples. The sound suppressing dimples may be configured as inverted concave frusto-conical sections.
-
FIG. 1 is a side view of a typical watercraft shown from the starboard side; -
FIG. 2 is an underside view of the hull of the present embodiment; -
FIG. 3 is a perspective view from the port side of the watercraft ofFIG. 1 ; -
FIG. 4 is an end view from the aft end of the boat of the present embodiment; -
FIG. 5 is an end view from the bow of the watercraft of the present invention; -
FIG. 6 is an underside perspective of the watercraft hull of the present invention taken from the starboard side; -
FIG. 7 is a view similar to that ofFIG. 6 showing the hull inverted; -
FIG. 8 is an enlarged view of the encircled portion shown inFIG. 7 ; -
FIG. 9 is a view similar to that ofFIG. 8 taken from a different perspective; -
FIG. 10 is a view showing the sounds suppression panel of the present embodiment; -
FIG. 11 is a cross sectional view through the sound suppression panel, at the position 11-11 ofFIG. 10 , with the watercraft shown in the water; and -
FIG. 12 shows an enlarged view of the encircled portion shown inFIG. 11 . - With reference first to
FIGS. 1 through 5 , the general details of the watercraft will be described herein. With reference first toFIG. 1 , the watercraft is shown generally at 2 and includes adeck portion 4 attached to avessel hull 6. It should be understood that these two units are typically constructed in separate halves and then joined together along a central seam. It should also be noted that these decks and hulls are typically molded, or made from fiberglass about a mold, however the actual construction is not material to the invention. Thewatercraft 2 further includes anaft portion 8 and abow portion 10, and as shown inFIG. 3 includes aport side 12 and astarboard side 14. - With reference now to
FIGS. 2, 4 and 5, thevessel hull 6 further comprises a V shapedbottom portion 16, and port side and starboard side chines 18 which includes a forward chine surface 20 (FIG. 5 ) and a rearward chine surface 22 (FIG. 22 ).Primary strake portions 24 also flanksecondary strake portions 26, as best shown inFIGS. 2 and 5 . - With reference now to
FIGS. 6, 7 and 8, a steppedportion 30 is defined which defines a stepped wall 32 (FIG. 8 ) thereby definingsurface 34 ofhull 6 and an upper steppedsurface 36. This also defines an inner sidewall at 38. The steppedportion 30 extends throughchine 18 definingsurface 39 which opens up on the side of thehull 6. A turningfin 40 is also provided and is positioned on therear chine surface 22. Turningfin 40 includes a curved surface at 42 and an inner surface at 44. As best shown inFIG. 9 , anopening 50 is defined between the steppedwall portions fin 40 is shown best inFIGS. 8 and 9 . - With reference now to
FIGS. 8-10 , the area ofsurface 36 bounded by steppedwall portion wall 38 andinner surface 44 of turningfin 40 is provided with a sound suppression surface as shown generally at 60. As shown best inFIG. 10 ,sound suppression device 60 is applied to surface 36, with acontoured surface 62, profiled to reside in close proximity to edge 32, aportion 64 which resides in opening 50, acurved surface 66 which tucks behind turningfin 40 and a plurality ofopenings 68. In this embodiment, the suppression surface is integrally molded into the hull, although it could be a separate panel, adhesively fixed onto the hull. With reference now toFIGS. 10-12 , the operation of the sound suppression device will now be described. - With reference to
FIG. 11 , a cross sectional view is shown at a point when thewatercraft 2 is planing.Surface 36 is shown raised above waterline WL, and the combination of thesurfaces FIG. 10 ) forms anacoustical chamber 90 beneath the watercraft. As shown inFIG. 12 ,sound suppression apertures 68 are shaped frusto-conically to include inner conically shapedwalls 70 withend walls 72. Rather, as shown,panel 60 is provided alongsurface 36, for the majority of the length that surface 36 is positioned above the water line WL. Thus sound waves that reflect off ofpanel 60 are cancelled. Some of the sound waves SW1 reflect off of one portion of frusto-conical portions 70 defining a reflected sound wave RW1 while other sound waves SW2 reflect off of other side of frusto-conical portions 70 defining a reflected sound wave RW2. It should be appreciated that reflected waves RW1 and RW2 cancel each other out, deadening the sound. - In the embodiment shown, the sound suppression apertures are provided with diameters at the surface of approximately ⅛ to ¼ inch in diameter. It should be apparent that other geometries could be applied to achieve the same sound suppressing results. It should also be appreciated that the number (or density) of the apertures and/or their geometry can be modified depending upon the frequency of the sound to be suppressed.
Claims (27)
1. A watercraft, comprising a deck and a hull, the hull being stepped intermediate a length of the hull to form an upper stepped surface, said upper stepped surface comprising sound suppressing dimples profiled to cancel an acoustical wave standing in the area adjacent the upper stepped surface.
2. The watercraft of claim 1 , further comprising a longitudinally extending turning fin positioned adjacent to the upper stepped surface.
3. The watercraft of claim 2 , further comprising a rear chine portion.
4. The watercraft of claim 3 , wherein the rear chine portion extends along the outer edge of the upper stepped portion.
5. The watercraft of claim 4 , comprising a forward chine portion forward of said stepped portion.
6. The watercraft of claim 5 , wherein the sound suppressing dimples are configured as concave dimples.
7. The watercraft of claim 6 , wherein the sound suppressing dimples are configured as inverted concave frusto-conical sections.
8. The watercraft of claim 1 , wherein the sound suppressing dimples are configured as inverted concave frusto-conical sections.
9. A watercraft comprising a deck and a hull, the hull being stepped intermediate a length of the hull to form an upper stepped surface, said upper stepped surface comprising sound suppressing means for canceling an acoustical wave standing in the area adjacent the upper stepped surface.
10. The watercraft of claim 9 , wherein the sound suppressing means are configured as concave sound suppressing dimples.
11. The watercraft of claim 10 , wherein the sound suppressing dimples are configured as inverted concave frusto-conical sections.
12. The watercraft of claim 9 , further comprising a longitudinally extending turning fin positioned adjacent to the upper stepped surface.
13. The watercraft of claim 9 , further comprising a rear chine portion.
14. The watercraft of claim 13 , wherein the rear chine portion extends along the outer edge of the upper stepped portion.
15. The watercraft of claim 14 , comprising a forward chine portion forward of said stepped portion.
16. The watercraft of claim 15 , wherein the sound suppressing means are configured as concave dimples.
17. The watercraft of claim 16 , wherein the sound suppressing dimples are configured as inverted concave frusto-conical sections.
18. A watercraft, comprising a deck and a hull, the hull having a plurality of surfaces forming an acoustical chamber with the waterline, the hull comprising sound suppressing dimples profiled to cancel an acoustical wave standing in the chamber.
19. The watercraft of claim 18 , wherein the sound suppressing dimples are configured as inverted concave frusto-conical sections.
20. The watercraft of claim 18 , further comprising a longitudinally extending turning fin positioned adjacent to said acoustical chamber.
21. The watercraft of claim 18 , wherein the hull is stepped intermediate a length of the hull to form an upper stepped surface, said upper stepped surface comprising said sound suppressing dimples.
22. The watercraft of claim 21 , further comprising a longitudinally extending turning fin positioned adjacent to the upper stepped surface.
23. The watercraft of claim 22 , further comprising a rear chine portion.
24. The watercraft of claim 23 , wherein the rear chine portion extends along the outer edge of the upper stepped portion.
25. The watercraft of claim 24 , comprising a forward chine portion forward of said stepped portion.
26. The watercraft of claim 25 , wherein the sound suppressing means are configured as concave dimples.
27. The watercraft of claim 26 , wherein the sound suppressing dimples are configured as inverted concave frusto-conical sections.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/507,404 US20070039536A1 (en) | 2005-08-19 | 2006-08-21 | Watercraft with sound suppressed stepped hull |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US70987705P | 2005-08-19 | 2005-08-19 | |
US11/507,404 US20070039536A1 (en) | 2005-08-19 | 2006-08-21 | Watercraft with sound suppressed stepped hull |
Publications (1)
Publication Number | Publication Date |
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US20070039536A1 true US20070039536A1 (en) | 2007-02-22 |
Family
ID=37766324
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US11/507,404 Abandoned US20070039536A1 (en) | 2005-08-19 | 2006-08-21 | Watercraft with sound suppressed stepped hull |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008034169A1 (en) * | 2006-09-20 | 2008-03-27 | Rivera Marine (Int) Pty Ltd | An accessory for a boat |
US20120145065A1 (en) * | 2010-07-29 | 2012-06-14 | Palm Beach Motor Yacht Co Pty Ltd | Boat Hull |
US9611006B1 (en) * | 2013-03-15 | 2017-04-04 | Correct Craft Ip Holdings, Llc | Boat with reconfigurable running surface for wake adjustment |
US9969464B1 (en) * | 2013-03-15 | 2018-05-15 | Correct Craft Ip Holdings, Llc | Boat with reconfigurable running surface for wake adjustment |
US10246162B2 (en) | 2014-11-07 | 2019-04-02 | Cross Step Llc | Marine vessel hull with a longitudinally vented transverse step |
US11319025B2 (en) | 2019-04-18 | 2022-05-03 | Cross Step Llc | Marine vessel hull with a longitudinally-vented, partial-beam transverse step |
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US5171623A (en) * | 1990-12-27 | 1992-12-15 | Yee Norman D | Drag reducing surface depressions |
US5452676A (en) * | 1994-07-05 | 1995-09-26 | Global Marine Performance, Inc. | Hull configuration for high speed boat |
US6000357A (en) * | 1998-04-08 | 1999-12-14 | Allison; Darris E. | Boat planing tabs |
US6237522B1 (en) * | 1999-03-23 | 2001-05-29 | Kawasaki Jukogyo Kabushiki Kaisha | Bottom structure of personal watercraft |
US20020025864A1 (en) * | 1999-10-25 | 2002-02-28 | Gilbert Barfield | Golf ball dimple structures with vortex generators |
US6666160B1 (en) * | 2000-03-15 | 2003-12-23 | Oerneblad Sten | High aspect dynamic lift boat hull |
US6923137B2 (en) * | 2002-06-10 | 2005-08-02 | Correct Craft, Inc. | Water sports performance boat hull |
-
2006
- 2006-08-21 US US11/507,404 patent/US20070039536A1/en not_active Abandoned
Patent Citations (7)
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US5171623A (en) * | 1990-12-27 | 1992-12-15 | Yee Norman D | Drag reducing surface depressions |
US5452676A (en) * | 1994-07-05 | 1995-09-26 | Global Marine Performance, Inc. | Hull configuration for high speed boat |
US6000357A (en) * | 1998-04-08 | 1999-12-14 | Allison; Darris E. | Boat planing tabs |
US6237522B1 (en) * | 1999-03-23 | 2001-05-29 | Kawasaki Jukogyo Kabushiki Kaisha | Bottom structure of personal watercraft |
US20020025864A1 (en) * | 1999-10-25 | 2002-02-28 | Gilbert Barfield | Golf ball dimple structures with vortex generators |
US6666160B1 (en) * | 2000-03-15 | 2003-12-23 | Oerneblad Sten | High aspect dynamic lift boat hull |
US6923137B2 (en) * | 2002-06-10 | 2005-08-02 | Correct Craft, Inc. | Water sports performance boat hull |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008034169A1 (en) * | 2006-09-20 | 2008-03-27 | Rivera Marine (Int) Pty Ltd | An accessory for a boat |
US20120145065A1 (en) * | 2010-07-29 | 2012-06-14 | Palm Beach Motor Yacht Co Pty Ltd | Boat Hull |
US9611006B1 (en) * | 2013-03-15 | 2017-04-04 | Correct Craft Ip Holdings, Llc | Boat with reconfigurable running surface for wake adjustment |
US9969464B1 (en) * | 2013-03-15 | 2018-05-15 | Correct Craft Ip Holdings, Llc | Boat with reconfigurable running surface for wake adjustment |
US10202171B1 (en) | 2013-03-15 | 2019-02-12 | Correct Craft Ip Holdings, Llc | Boat with reconfigurable running surface for wake adjustment |
US10246162B2 (en) | 2014-11-07 | 2019-04-02 | Cross Step Llc | Marine vessel hull with a longitudinally vented transverse step |
US10858069B2 (en) | 2014-11-07 | 2020-12-08 | Cross Step Llc | Marine vessel hull with a longitudinally vented transverse step |
US11319025B2 (en) | 2019-04-18 | 2022-05-03 | Cross Step Llc | Marine vessel hull with a longitudinally-vented, partial-beam transverse step |
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