EP0064271A2 - Bateau sectionalisé - Google Patents

Bateau sectionalisé Download PDF

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Publication number
EP0064271A2
EP0064271A2 EP82103612A EP82103612A EP0064271A2 EP 0064271 A2 EP0064271 A2 EP 0064271A2 EP 82103612 A EP82103612 A EP 82103612A EP 82103612 A EP82103612 A EP 82103612A EP 0064271 A2 EP0064271 A2 EP 0064271A2
Authority
EP
European Patent Office
Prior art keywords
tendons
sections
hull
hull assembly
boat
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Withdrawn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
EP82103612A
Other languages
German (de)
English (en)
Other versions
EP0064271A3 (fr
Inventor
David Albert Smith
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
Publication of EP0064271A2 publication Critical patent/EP0064271A2/fr
Publication of EP0064271A3 publication Critical patent/EP0064271A3/fr
Withdrawn legal-status Critical Current

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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 
    • B63B7/00—Collapsible, foldable, inflatable or like vessels
    • B63B7/02—Collapsible, foldable, inflatable or like vessels comprising only rigid parts
    • B63B7/04—Collapsible, foldable, inflatable or like vessels comprising only rigid parts sectionalised
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B7/00—Collapsible, foldable, inflatable or like vessels
    • B63B2007/006—Collapsible, foldable, inflatable or like vessels comprising nestable elements

Definitions

  • the assembly of the hull of a small boat by combining transverse sections has a number of important advantages. It is particularly advantageous when storing or transporting the boat. For example, many smaller cruising boats are ill suited to carrying a rigid, non-inflatable lifeboat or a dinghy for use in reaching shore once the larger boat has been moored. However, a rigid lifeboat or a dinghy that can be disassembled may be more easily stored on deck or below deck. Conventionally constructed boats used for fishing, sailing, and other recreational activities are often transported by automobiles or small trucks and must be carried by trailer, whereas a disassemblable boat might be carried on the vehicle itself.
  • a principal object of the present invention is to provide a disassemblable boat of sectional construction which avoids, or at least mitigates, the problems and disadvantages mentioned above.
  • the present invention provides a boat comprising: a plurality of separable, water-tight, transverse hull sections ' combined end-to-end to form a hull assembly having a predetermined external curvature, the said plurality of sections comprising at least a bow section and a stern section; a pair of tendons extending externally and longitudinally along the said hull assembly from the bow to the stern below the waterline and below the neutral axis on opposite sides of the longitudinal centre line, each of the said tendons following a curved geodesic line along an exterior surface of the hull assembly; and an attachment means for securing the tendons to the said bow and stern sections and for holding the tendons in tension, thereby preventing separation of the said sections from one another.
  • the tendons are best situated on the keel-most panels of the hull and below the chines.
  • the tendons are positioned in open grooves on the exterior surface of the boat hull and are held in the grooves by tension alone.
  • attachment means is conveniently provided for securing the tendons to the hull and holding them in tension.
  • the attachment means consists of a towing eye at the bow and a tensioning means inside the stern section for tensioning the tendons against the eye.
  • the tendons can be used in combination with through fasteners that connect adjacent sections above the waterline, the tendons preventing separation beneath the waterline. It is preferable that the various sections be so shaped and dimensioned that they can be nested as a further aid to storage with a minimum of space occupied.
  • the sections 14, 16, 17 and 18 form respective water-tight enclosures open only at the top.
  • the sections 14, 16, 17 and 18 can be nested as shown in Figure 8.
  • the second mid-section 17 is the largest in each dimension so that it can receive the first mid-section 16 which in turn receives the stern section 18.
  • the sections 14, 16, 17 and 18 can be made of, for example, a glass fibre/resin matrix, metal or wood. Alternatively, they can be laminated, preferably using a low density core.
  • the lines of this particular hull assembly 12, while exhibiting a compound curvature, can be developed from plywood.
  • the fore and aft ends of the mid-sections 16, and 17 are each closed by respective transverse bulkheads 20, which are partitions of about the same, or slightly less, height as the vertical sides 22 of the boat 10.
  • a fore bulkhead 26 on the stern section 18 mates with the aft bulkhead 20 of the second mid-section 17.
  • the bulkheads 20 of the mid-sections 17 and 18 carry lips 28 which extend over, and engage the top edges of, the adjoining bulkheads 24 and 26 (as is best shown in Figure 5).
  • the sections 14, 16, 17 and 18 are interlocked and properly positioned.
  • fasteners 32 there are apertures in the mating bulkheads 20, 24 and 26 that receive through fasteners 32. These fasteners 32 are positioned well above the waterline of the hull 12 so that there is no significant leakage around them. Although ordinary marine bolts can be used, the preferred fasteners 32 are quarter turn cam lock fasteners of a type conventionally used for marine applications.
  • Attachment of the sections 14, 16, 17 and 18 below the waterline is accomplished by two corrosion-resistant, woven steel tendons 34 that extend along the hull 12 from the bow to the stern. To receive these tendons 34, two downwardly-facing longitudinal grooves 36 are provided, each extending along the bottom of the entire hull assembly 12 (see Figures 4 and 6a).
  • the lines followed by the tendons 34 and the grooves 36 are geodesic. That is to say, they are lines on the external surface of the hull 12 naturally followed by the tendons 34 when in tension, i.e. they are the shortest lines between the points at which the tendons are secured to the hull. Thus, it is not necessary to position the tendons 34 manually along the length of the grooves 36. The tendons 34 naturally fall into the grooves 36 when stretched over the hull 12 and tend to resist forces that would displace them laterally out of the grooves. However, the use of the grooves 36 prevents the tendons 34 from chafing against the hull 12. The grooves 36 also prevent the tendons 34 from snagging on underwater obstacles and debris and protect the tendons when the boat 10 is beached.
  • the tendons 34 are preferably held at their fore ends by an eye 52 ( Figures 1 and 7), which is referred to as a "towing eye” because it can also serve as an attachment point for a painter.
  • the towing eye 52 is placed at an appropriate height to serve this dual purpose.
  • the aft ends of the tendons 34 extend up the outside and over the top edge of the transom 38, and are releasably secured to over-centre levers 58 that are permanently mounted on the interior surface of the transom above the waterline and inside the stern section 18. Once the over-centre levers 58 have been latched, the tendons 34 firmly secure the hull sections 14, 16, 17 and 18 together along their adjoining lower edges.
  • the hull 12 is symmetrical, the tendons 34 being equally spaced from opposite sides of the longitudinal hull centre line "B" and passing on opposite sides of the centre board trunk 59 and any rudder assembly (not shown).
  • the tendons 34 must be located below the neutral axis "A' " and below the waterline of the hull 12.
  • One important advantage which has been found to follow from the use of two tendons 34 is that a redundancy is provided, because the hull 12 is kept substantially intact and operational even if one tendon fails.
  • the geodesic lines chosen should be close to the longitudinal centre line "B" ( Figure 3), or to the keel if there is one.
  • placing the tendons 34 close to the centre line "B” displaces them as far as possible from the neutral axis "A' ", thereby giving the tendons the maximum holding power for their tensile strength.
  • each of the hull sections 14, 16, 17 and 18 can be made to float by itself, permitting the boat 10 to be assembled in the water. Very little time or skill is required to assemble the boat 10. Once disassembled, it requires a minimum of space since the hull sections 14, 16, 17 and 18 can be nested and the tendons 34 can be coiled and placed inside the sections.
  • the principles of the invention are further illustrated by a second boat 60, shown in Figures 9-12.
  • the hull 61 includes three hull sections 62, 64 and 66, instead of four as in the case of the first boat 10.
  • the principal difference between the boat 10 and the boat 60 lies in the shape of the hull 61.
  • the hull 61 is less efficient, having a less complex curvature with hard chines, it is less difficult to fabricate and less expensive.
  • the placing of the tendons 70 is similar to that of the first boat 10, being below the neutral axis and near to the centre line.
  • the tendons 70 are, in accordance with the parameters given above, below the lowest chines of the hull 61 and on the keel-most panels of the hull.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Emergency Lowering Means (AREA)
  • Ropes Or Cables (AREA)
  • Fencing (AREA)
EP82103612A 1981-04-30 1982-04-28 Bateau sectionalisé Withdrawn EP0064271A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25915281A 1981-04-30 1981-04-30
US259152 1999-02-26

Publications (2)

Publication Number Publication Date
EP0064271A2 true EP0064271A2 (fr) 1982-11-10
EP0064271A3 EP0064271A3 (fr) 1983-06-08

Family

ID=22983744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103612A Withdrawn EP0064271A3 (fr) 1981-04-30 1982-04-28 Bateau sectionalisé

Country Status (4)

Country Link
EP (1) EP0064271A3 (fr)
JP (1) JPS58476A (fr)
AU (1) AU8308282A (fr)
CA (1) CA1183733A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3346377A1 (de) * 1983-12-22 1985-07-18 Hans-Hermann 7799 Illmensee Wittmaack Zerlegbares boot
FR2619546A1 (fr) * 1987-08-17 1989-02-24 Auguste Legoy Engin de navigation modulaire equipe de flotteurs rotatifs

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2651889B2 (ja) * 1994-03-10 1997-09-10 エース住宅株式会社 竹製ボート

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB480987A (en) * 1937-01-05 1938-03-03 Saunders Roe Ltd Improvements in folding boats, floats and other watercraft or floating vessels
US2120627A (en) * 1936-12-04 1938-06-14 John A Mouat Collapsible boat
GB516835A (en) * 1938-07-20 1940-01-12 Rowland Frank May Improvements in or relating to foldable boats
US2457010A (en) * 1947-02-28 1948-12-21 John H Thedick Portable boat

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2120627A (en) * 1936-12-04 1938-06-14 John A Mouat Collapsible boat
GB480987A (en) * 1937-01-05 1938-03-03 Saunders Roe Ltd Improvements in folding boats, floats and other watercraft or floating vessels
GB516835A (en) * 1938-07-20 1940-01-12 Rowland Frank May Improvements in or relating to foldable boats
US2457010A (en) * 1947-02-28 1948-12-21 John H Thedick Portable boat

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3346377A1 (de) * 1983-12-22 1985-07-18 Hans-Hermann 7799 Illmensee Wittmaack Zerlegbares boot
FR2619546A1 (fr) * 1987-08-17 1989-02-24 Auguste Legoy Engin de navigation modulaire equipe de flotteurs rotatifs
EP0306388A1 (fr) * 1987-08-17 1989-03-08 Auguste Legoy Engin de navigation modulaire équipé de flotteurs rotatifs

Also Published As

Publication number Publication date
CA1183733A (fr) 1985-03-12
EP0064271A3 (fr) 1983-06-08
AU8308282A (en) 1982-11-04
JPS58476A (ja) 1983-01-05

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