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WO1983002926A1 - Modele de planche a surf - Google Patents

Modele de planche a surf Download PDF

Info

Publication number
WO1983002926A1
WO1983002926A1 PCT/EP1983/000054 EP8300054W WO8302926A1 WO 1983002926 A1 WO1983002926 A1 WO 1983002926A1 EP 8300054 W EP8300054 W EP 8300054W WO 8302926 A1 WO8302926 A1 WO 8302926A1
Authority
WO
WIPO (PCT)
Prior art keywords
surfboard
fin
surfboard according
keel
front fin
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.)
Ceased
Application number
PCT/EP1983/000054
Other languages
German (de)
English (en)
Inventor
Wilhelm Boden
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP58500913A priority Critical patent/JPS59500368A/ja
Publication of WO1983002926A1 publication Critical patent/WO1983002926A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/60—Board appendages, e.g. fins, hydrofoils or centre boards
    • B63B32/64—Adjustable, e.g. by adding sections, by removing sections or by changing orientation or profile

Definitions

  • the invention relates to a surfboard as described in the preamble of claim 1.
  • Surfboards come in many different designs. For example, they are tailored to the length. The edges are rounded, etc. All known surfboards have the disadvantage that they do not run at too high a speed, in particular because they stomp in rough seas or hit the next wave crest too hard when gliding.
  • the object of the invention is to provide a particularly fast-running course, cross and length stable surfboard that can run even with a stronger rough water surface without hitting and pounding and that when gliding through significantly reduced drag coefficients without loss of travel even in choppy conditions The sea starts softly.
  • the lateral displacement resistance of potential line bodies which occurs with increasing running speed and increases in the third power is reduced to an increase in resistance in the second power in the shaping according to the invention.
  • higher speeds are achieved with the same thrust output, or a considerable reduction in thrust requirements is achieved.
  • a further reduction in the running resistance coefficients is both due to an increase in the water-air mixture resulting from the inventive design of the wetted surfboard portion and with increasing running speed, and accordingly a reduction in the water density, as well as through the channel shape and its arrangement, which during the running in previous Direction through the boundary surfaces placed parallel to each other forces the flow threads of the incoming water hydrodynamically in a parallel flow direction.
  • Fig. 2 shows a cut down along the line AB of Fig. 1, ie ice only the con tures of the surfboard can be seen and the bow rafts are indicated with dashed lines or dash-dotted lines,
  • Fig.3 is a top view of the bottom of the surfboard
  • FIG. 4 shows a partial view of the front fin, which is placed on the surfboard in the front area.
  • the front fin 3 (see FIG. 1) is arranged at a distance from the upper side 39 of the surfboard 1, the leading edge 4 being at a perpendicular distance 10 or also directly inclined (see FIG. 4).
  • the outer contours of the front fin 3 according to the invention are shown, for example, in supervision in FIG. 2.
  • the contour 31 extends from the front almost to the rear end of the surfboard 1; the lateral overhang is shown relatively large here; it can also be much lower. For example, it can make up 5% to 20% of the width of the surfboard 1. It is irrelevant whether there is a very strong rounding in the front area (see contour 31, for example) or whether this edge course shows a smaller arc shape (see contour 36).
  • the contours 33 and 35 of the front fin 3 are also curved to different extents, but these front fins no longer run parallel or projecting from the surfboard, but run in at the front where the curvature of the board (front area) ends.
  • the distance or protrusion 2 namely the front edge of the surfboard 1 to the front edge of the front fin 3, can be selected accordingly; this also applies to the distance between the underside of the front fin 3 in the front area and the upper side 39 of the surfboard 1.
  • the top of the front fin 3 can be convex or concave.
  • the perpendicular distance 10 is at a distance or protrusion 11 from the bow of the surfboard 1, which can also be larger than shown in FIG. 1; this distance 11 could, however, also be very minimal or the front fin 3 could run in directly at the bow of the surfboard 1.
  • the ventilation duct 12, which is open at the bottom and runs symmetrically to the vertical central longitudinal plane of the surfboard 1, lies between the two vertical, parallel side walls which are formed by the two sliding steps 8 arranged at a distance 14 (see, for example, FIG. 3).
  • four sliding levels 5 to 8 (port and starboard) are provided. This number can be higher or lower.
  • the sliding steps 5 to 8 do not have to extend over the entire length of the bottom 37 of the surfboard 1. Appropriately, however, they always start at the front so that air can enter the ventilation duct 12 at high speed.
  • a keel fin system 19 is provided in the central region of the ventilation duct 12 - arranged centrally.
  • the keel fins 18 preferably extend all the way to the front. But you don't have to reach to the stern (like track levels 5 to 8); they can end earlier at a distance of 20.
  • the keel fins 16 to 18 are staggered here. You can also end them all in one place.
  • the keel fins 16 to 18 are also staggered, i.e. set back. They could also be pulled forward to the front (leading edge), as shown for glide levels 5 to 8.
  • the keel fins 16 and 17 are arranged on both sides of the keel fin 18 sloping down towards the bottom. The staggering chosen here so that the keel fin 16 is the shortest, the keel fin 17 is of medium length and the keel raft 18 has the greatest length. This is a solution according to the invention.
  • a bead which is elliptical or spherical in cross-section, the largest diameter being in the central region and becoming smaller and smaller towards the rear.
  • the transition from the keel fin to the keel fin - seen in cross section - can be rectangular or at another angle, whereby the transitions can be rounded; this applies mutatis mutandis to glide levels 5 to 8.
  • the front fin 3 is expediently placed on the surfboard 1, so that the waterline of the surfboard is retained, at least in principle.
  • the front fin 3 can be made removable (by inserting it into the grooves provided, screwing tight, etc.).
  • a further damping of the system can be achieved through the openings 22.
  • the protrusion of the front fin 3 according to the contours 31 can also, for example, parallel (not mandatory) and at a distance from the Kan te of the surfboard 1 to the stern (see.
  • the front fin 3 can also be kept shorter in the rear area, as conveyed, for example, by the dash-dotted line 36a (contour to contour 36); here the distance is widened astern like a wing and then tears off.
  • This shape can also be provided for longer (even going beyond the stern aft).
  • Such an overhang can also be provided at a distance and parallel to the straight or curved tail (here rear shape 29, 30).
  • the contour 32a is intended to indicate that the surfboard 1 can also be strongly bent in the bow region, for example in the form of a partial circle.
  • 26 bow shape of the bow fin (ball, ellipse, drops)
  • 27 bow shape of the bow fin (ball, ellipse, drops)
  • 28 bow shape of the surfboard (shapes as for 26 and 27)
  • 29 stern shape straight

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Toys (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

Au fond (37) de la planche à surf (1), au moins un canal d'aération (12) est prévu, formé d'au moins un aileron intérieur (16 à 18) et d'au moins un palier de glissement extérieur (5 à 8).
PCT/EP1983/000054 1982-02-25 1983-02-25 Modele de planche a surf Ceased WO1983002926A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58500913A JPS59500368A (ja) 1982-02-25 1983-02-25 サ−フボ−ド

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3206773.9820225 1982-02-25
DE19823206773 DE3206773A1 (de) 1982-02-25 1982-02-25 Surfbrett

Publications (1)

Publication Number Publication Date
WO1983002926A1 true WO1983002926A1 (fr) 1983-09-01

Family

ID=6156663

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1983/000054 Ceased WO1983002926A1 (fr) 1982-02-25 1983-02-25 Modele de planche a surf

Country Status (4)

Country Link
EP (1) EP0087777A1 (fr)
JP (1) JPS59500368A (fr)
DE (1) DE3206773A1 (fr)
WO (1) WO1983002926A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4858549A (en) * 1985-10-11 1989-08-22 Dealermain Ltd. Fast boat

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU337164S (en) 2010-10-21 2011-06-16 Envisor Ltd Surf or paddle board
USD669549S1 (en) 2011-10-24 2012-10-23 Envisor Limited Surf or paddle board

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3226739A (en) * 1964-11-06 1966-01-04 Harold C Noe Boat hull construction
GB1199658A (en) * 1968-05-29 1970-07-22 Francis Williamson Crosby Boat Hull of the Planing Type
US4091761A (en) * 1977-03-23 1978-05-30 Fehn Allan J Modified tunnel hull boat
DE7727907U1 (de) * 1978-06-01 Degler Geb. Walter, Ursula, 8214 Bernau Speed-Lifter für Stehsegler
FR2409190A1 (fr) * 1977-11-21 1979-06-15 Marker Hannes Planche a voile
FR2484354A1 (fr) * 1980-06-11 1981-12-18 Carn Tanguy Perfectionnements apportes aux embarcations notamment du genre planche a voile

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4936096A (fr) * 1972-08-07 1974-04-03

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7727907U1 (de) * 1978-06-01 Degler Geb. Walter, Ursula, 8214 Bernau Speed-Lifter für Stehsegler
US3226739A (en) * 1964-11-06 1966-01-04 Harold C Noe Boat hull construction
GB1199658A (en) * 1968-05-29 1970-07-22 Francis Williamson Crosby Boat Hull of the Planing Type
US4091761A (en) * 1977-03-23 1978-05-30 Fehn Allan J Modified tunnel hull boat
FR2409190A1 (fr) * 1977-11-21 1979-06-15 Marker Hannes Planche a voile
FR2484354A1 (fr) * 1980-06-11 1981-12-18 Carn Tanguy Perfectionnements apportes aux embarcations notamment du genre planche a voile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4858549A (en) * 1985-10-11 1989-08-22 Dealermain Ltd. Fast boat

Also Published As

Publication number Publication date
EP0087777A1 (fr) 1983-09-07
DE3206773A1 (de) 1983-09-01
JPS59500368A (ja) 1984-03-08

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Designated state(s): JP US