EP0158029A1 - Planche de surfing - Google Patents

Planche de surfing Download PDF

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Publication number
EP0158029A1
EP0158029A1 EP85101350A EP85101350A EP0158029A1 EP 0158029 A1 EP0158029 A1 EP 0158029A1 EP 85101350 A EP85101350 A EP 85101350A EP 85101350 A EP85101350 A EP 85101350A EP 0158029 A1 EP0158029 A1 EP 0158029A1
Authority
EP
European Patent Office
Prior art keywords
surfboard
drive fin
foot
lever
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.)
Withdrawn
Application number
EP85101350A
Other languages
German (de)
English (en)
Inventor
Luise Enners
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.)
Vertriebsgesellschaft fur Homa Schwimmbadzubehor Ets
Original Assignee
Vertriebsgesellschaft fur Homa Schwimmbadzubehor Ets
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 Vertriebsgesellschaft fur Homa Schwimmbadzubehor Ets filed Critical Vertriebsgesellschaft fur Homa Schwimmbadzubehor Ets
Publication of EP0158029A1 publication Critical patent/EP0158029A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/30—Propulsive elements directly acting on water of non-rotary type
    • B63H1/36—Propulsive elements directly acting on water of non-rotary type swinging sideways, e.g. fishtail type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H16/00—Marine propulsion by muscle power
    • B63H16/08—Other apparatus for converting muscle power into propulsive effort

Definitions

  • the invention relates to a surfboard.
  • Surfboards are known in many variants, for example as surf surfboards or as windsurfboards with a sail as the drive.
  • the object of the invention should now be to make surfing possible without surf and wind solely by utilizing the muscular strength of the surfer on any body of water.
  • a sword can be provided for additional stabilization of the surfboard, which can also have a stabilizing weight at its lower free end.
  • An increase in the lateral tilt stability can also be achieved, for example, by the width of the drive fin being greater than the width of the surfboard.
  • the drive unit consisting of drive fin and stand board can also be provided as a supplementary unit for retrofitting an existing normal windsurf or surf surfboard.
  • the arrangement of the standing board (luffing board) approximately above the center of gravity of the surfboard results in the desired uniform loading of the surfboard and, in consideration of the fin movement, the desired smooth ride of the surfboard body.
  • a further advantageous embodiment of the invention is that in order to increase the stability of the surfer and to improve the steerability of the surfboard with the legs of the surfer as a holding and steering aid for the surfer in the front region of the surfboard, a tether arranged in a point on the longitudinal axis of the surfboard or a steering rope-like tether is provided at two points opposite one another with respect to the longitudinal axis of the surfboard, preferably in the edge regions of the surfboard.
  • the surfboard shown in FIGS. 1 and 2 in top view and side sectional view consists of a surfboard body 1 with the usual design and construction.
  • a double board lever-shaped stand board 2 is pivotably mounted on an axis of rotation 3.
  • the surfer stands with one foot on the front end 4 and with his other foot on the rear end 5 of this standing board and sets it in a rocking motion due to the mutual loading of one or the other foot.
  • This rocking movement is transmitted to this drive fin via a push rod 6, which is articulated on the one hand to the rear free end 5 of the base plate 2 and on the other hand to the rigid, thickened clamping end 7 of a drive fin 8 provided underneath the surfboard body, and displaces the opposite end of this clamp (in Top view) fish tail-like free ends 9 of this drive fin in a wagging movement, which ensures the propulsion of the surfboard.
  • the drive fin 8 is mounted like a double-beam lever on an axis of rotation 10.
  • Fig. 3 shows a side view of a similar embodiment as Fig.2, but with the difference that a foot strap 11, 12 is provided on the front and rear ends 4, 5 of the standing board 2 and that on the underside of the surfboard body 1, for example in its focus area S to increase the lateral tilt stability of the surfboard a sword 13 and / or a stabilizing weight 14 is provided.
  • both the stand board 2 is detachably fastened to the surfboard body 1 by means of threaded plug bolts 15 and associated screw nuts 16 and the drive fin 8 by means of threaded plug bolts 17 and associated screw nuts 18.
  • the surfboard body had a length of approximately 250 cm and a width of approximately 60 cm; the stand board is approx. 65 cm long and approx. 25 cm wide; the drive fin has a total length of approx. 100 cm and a maximum width of approx. 70 cm; the lever arm ratio was between 1: 3 and 1: 4 for the double-beam lever-mounted drive fin. With a lever arm ratio of 1: 4 and a total drive fin length of 100 cm, the axis of rotation is 25 cm from the clamping end or 75 cm from the free end of the Drive fin arranged away.
  • FIG. 4 shows a top view and FIG. 5 shows a longitudinal section side view of a surfboard 1 'with a wide rear and with a differently designed and differently dimensioned drive fin 23.
  • the essential design feature of this drive fin is that it has stiffening ribs 24 on its lateral edge areas, which have the strongest cross-section at the clamping end of this drive fin and taper more and more towards the free fin end, so that this drive fin has great rigidity in its clamping area and can therefore transmit the drive forces applied by the push rod well, while becoming more and more elastic towards the free end is so that it performs a whip-like striking movement against the water with each stroke of the fin.
  • a cross section through this drive fin is in Fig. 6 as a section along the line IV - IV in Fig. 4 shown.
  • a cross section thickening is also provided in the central longitudinal axis of the drive fin in order to increase the rigidity in the central axis area.
  • a holding rope 20 is arranged as a holding and steering aid for the surfer, either in two opposite points 26, which should be as far apart as possible, a rope-like tether 21 or in only one point 27 on the longitudinal axis of the surfboard . All other devices correspond to those shown in FIGS. 1 to 3 and are therefore not described again.
EP85101350A 1984-02-08 1985-02-08 Planche de surfing Withdrawn EP0158029A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3404473 1984-02-08
DE19843404473 DE3404473A1 (de) 1984-02-08 1984-02-08 Surfboard

Publications (1)

Publication Number Publication Date
EP0158029A1 true EP0158029A1 (fr) 1985-10-16

Family

ID=6227151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85101350A Withdrawn EP0158029A1 (fr) 1984-02-08 1985-02-08 Planche de surfing

Country Status (2)

Country Link
EP (1) EP0158029A1 (fr)
DE (1) DE3404473A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212467A (en) * 1987-11-16 1989-07-26 Watkiss Automation Ltd Water-borne craft
FR2709282A1 (fr) * 1990-04-17 1995-03-03 Royer Alfred Engin nautique du type ski permettant de se déplacer sur l'eau.
GB2411864A (en) * 2004-03-13 2005-09-14 Ronald Henry Stephens Leisure craft propelled through a pivotally mounted rocking section

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4212920C2 (de) * 1992-04-15 1995-03-23 Erich Dr Ing Henker Flossenantrieb mit Muskelkraft für Wasserfahrzeuge
NL9400263A (nl) * 1994-02-22 1995-10-02 Theodorus Petrus Van Tongeren Vaartuig.
DE4412911A1 (de) * 1994-04-14 1995-10-19 Wolfgang Wettling Fluke board
US10196118B2 (en) * 2015-07-17 2019-02-05 Wayne H. Strak Propellable aquatic board

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2424175A1 (de) * 1974-05-17 1975-11-27 Horst Dens Katamaran mit flossenantrieb
DE2526334A1 (de) * 1975-06-12 1976-12-16 Kronberg Hans Joachim Ing Grad Tretboot mit flossenantrieb
DE2840411A1 (de) * 1978-09-16 1980-04-03 Bojak Kurt Antrieb fuer ein gleitboot (surfboard)
FR2486015A1 (fr) * 1980-07-04 1982-01-08 Chretien Jacques Nouvel engin nautique a propulsion musculaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2424175A1 (de) * 1974-05-17 1975-11-27 Horst Dens Katamaran mit flossenantrieb
DE2526334A1 (de) * 1975-06-12 1976-12-16 Kronberg Hans Joachim Ing Grad Tretboot mit flossenantrieb
DE2840411A1 (de) * 1978-09-16 1980-04-03 Bojak Kurt Antrieb fuer ein gleitboot (surfboard)
FR2486015A1 (fr) * 1980-07-04 1982-01-08 Chretien Jacques Nouvel engin nautique a propulsion musculaire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212467A (en) * 1987-11-16 1989-07-26 Watkiss Automation Ltd Water-borne craft
FR2709282A1 (fr) * 1990-04-17 1995-03-03 Royer Alfred Engin nautique du type ski permettant de se déplacer sur l'eau.
GB2411864A (en) * 2004-03-13 2005-09-14 Ronald Henry Stephens Leisure craft propelled through a pivotally mounted rocking section

Also Published As

Publication number Publication date
DE3404473A1 (de) 1985-08-08

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19860416

17Q First examination report despatched

Effective date: 19861016

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870227

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ENNERS, LUISE