US3170174A - Collapsible boat - Google Patents

Collapsible boat Download PDF

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Publication number
US3170174A
US3170174A US136698A US13669861A US3170174A US 3170174 A US3170174 A US 3170174A US 136698 A US136698 A US 136698A US 13669861 A US13669861 A US 13669861A US 3170174 A US3170174 A US 3170174A
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United States
Prior art keywords
boards
boat
spaced
floor
tubes
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Expired - Lifetime
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US136698A
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English (en)
Inventor
Hanel Klaus
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Individual
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    • 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
    • B63B7/06—Collapsible, foldable, inflatable or like vessels having parts of non-rigid material
    • B63B7/08—Inflatable
    • B63B7/082—Inflatable having parts of rigid material

Definitions

  • the invention concerns anV inilatable boat having lateral ⁇ side buoyancy tubes, a transom for mounting a motor thereon, stern tins and possibly a mounting tor a set of sails.
  • the object of this invention is to provide an inliatable boat with bracing and mounting components suitable for rapid assembly, iCollapsing to pack size should be readily effected; It is important, moreover, that the boat has great durability, so that the skin of the boat should not be stretched excessively. Furthermore it isv important that the boat'can be adapted readily and rapidly tothe intended use, e.g. -ior rowing, motoror sailing.
  • Aiurther objectofthe invention ris to impart greater United States Patent() M stability and a good cornering characteristic evenwhen i the water is choppy. f,
  • Inflatable boats with lateral buoyancy tubes land stern fins are known.
  • the disadvantagey of this design is that the sltin ofthe boat ts against the oor'boards only by adhesive friction and longitudinal play is still possible.
  • vboats are notstable and include theinherentdisadvantagesl of inflatable boats, i.e. when waves are high the boat llexes thus increasing the risk of capsi'zing.
  • lt is an object of the invention'to avoid these kdisadvantages and to associate with the inflatable boat the advantages of a rigid boat, without losing the benelits oi rapid. assembly, and dismantling and foldingV the collapsedboat to a small size.
  • rlfhe solution of the problem accordingto the invention consists in that the collapsible parts ⁇ partly have reinforcing and fixing plates cementedtheretm which tro-V gether with inserted detachable reinforcing and fixing plates and their bracing. iorrn the inilatable boat.v
  • a convenient embodiment consistsin that thebracing of the bottom is effected by means of individual door boards which are rigidly connected with the' skin of the ⁇ floor by cementing in spaced relationship from fone another.
  • Other intermediate boards iill thelspace between these tloor boards ledges detachably connected with 'the tloor boards and intermediate boardsform a static sup-
  • the floor skin surfacesl which arevrigidly cemented to the oor boards are no longer able to become extendedy or stretch. Changes in length are possible onlyinthe spacing'betweenrthe floor boards cemented in position. ⁇
  • a preferred embodiment consists in that a front and rear oor board are cemented in position and arranged between them two intermediate boards hingedly connected with ⁇ one another'and engaging 'beneath two holding members fixed on the hoor boards.V
  • the intermediate boards, which are ar' ticulatedV Eby means of a rubber band are thus safe .from being lost andalso permit a more rapid assembly.V
  • the assembly of' the boatV becomes very simple by Y means of this arrangement. lt is no longer necessary to insert the transom under tension, but itis simply inserted ,Y loosely and the skin ofthe boat forming the rear closure is led upwards from the stern iin and secured lin any manner on thetransom.
  • the transomthen transmits its load laterally to the buoyancy tubes and at the bottom to the oor board,
  • the transmission to the buoyancy tubes is i eifectedf-by means of bulges which are cemented o n the 'buoyancy tubes and supported on both sides against the It is also possible for the ledges to have devices known intermediate Vboards a good power transmission from the Patentedfeb. 23, 196.5
  • the floor and intermediate boards may be of varied construction.
  • a favorable structural embodiment is that the pivotal axis of rotation of the flexibly connected intermediate boards filling the space between the floor boards is situated at right angles to the direction of travel.
  • This embodiment leads to a fiat fioor of the boat.
  • a boat constructed in this manner will have a low drag coefficient.
  • An alternative embodiment is that the axis of rotation of the articulated connected intermediate boards filling the spaces between the fioor boards lies parallel to the direction of travel.
  • This embodiment forms one keel underneath on the inflatable boat and the ledges arranged at right angles to the direction of travel and connecting the intermediate and floor board are of rib-like construction. Great stability is thereby imparted to the boat and is rendered suitable particularly for a high sail plan.
  • the floor boards may have bevelled edges along their mutually parallel edges against which the intermediate boards are supported.
  • the intermediate boards are thereby supported by the floor boards both longitudinally and at right angles relative to the direction of travel, so that the ledges ensure that a good stability is obtained and course holding effected by the suitably constructed shape of the floor and boards.
  • hinges In a similar way it is possible for hinges to be formed in the fioor boards by the fact that the boards are provided at such a distance from one another that it is pos ⁇ sible for an axis of rotation to be formed. The hinge is then formed by the skin of the fioor. It is possible for the distance to be sodimensioned that a transverse or longitudinal ledge engages in this distance so that sufficient stability is provided and the skin of the floor also supported at this point.
  • the step is expedient for the step to be provided on a door board cemented to the fabric and at the same time for a lee board or center board penetrating the skin of the boat to be provided.
  • the lee board box ensures that the boat has lateral resistance due to the lee board penetrating through the skin of the boat into the water. Hitherto it was impossible to use such lee board boxes or lee boards owing to sealing problems.
  • a further method of fixing is that the fioor boards have aligned rubber profiles which permit the ledges to be inserted.
  • the travelling properties are improved by the fact that the weight of the buoyancy tubes is not absorbed by the floor boards and that lateral runnerspor keels are formed.
  • buoyancy tubes prefferably have bracing or fastening boards.
  • a further embodiment also provides for the fixing boards to form a part of the buoyancy tubes and support fixing devices.
  • a further embodiment is that a fixing board forming the defining surface of the buoyancy tubes is adapted to extend concavely or rectilinearly.
  • Another embodiment involves the transom being fixed on the longitudinally extending fixing boards.
  • bracing boards it is possible for bracing boards to be arranged in the buoyancy tubes.
  • the internally disposed bracing boards too can alter the cross-sectional shape of the buoyancy tubes.
  • One embodiment consists in that the bracing boards are arranged only in a portion of the buoyancy tubes and thereby caused to form keels or runners.
  • outside fixing boards are supported by struts or bracing boards arranged in the buoyancy tubes.
  • This measure makes it possible to attribute static properties to the boat which otherwise are provided only in a rigid boat.
  • bracing and fixing boards are arranged in pieces, or connected by hinges which permit collapsing to pack size.
  • Such hinges may consist of rubber band which therefore requires .no maintenance and is resistant to corrosion.
  • floor components such as lee boards, stern plates, transom, seats, hooks, eyelets and so forth are detachably provided on the fixing or bracing board.
  • the fixing or bracing boards Depending upon the required travelling properties it is possible for the fixing or bracing boards to urge the buoyancy tubes to form a stable hull section.
  • FIG. 1 is a section along line I-I of FIG. 3 showing FIG. 4 shows schematically the Vrear view of FIG. 3 in section with ⁇ the vtransom removed;
  • FIG. 5 is another embodiment inl a'view corresponding to FIG. 3 showing a plan view of oor and intermediate boards the separating ⁇ gapsthereof disposed in the direction of travel; .1
  • FIG. 6 corresponds to a side elevation of FIG.A 5 in section without transom
  • FIG. 7 shows schematically an alternative method of
  • FIG. 8 shows schematically how the ledge is latched into eyelets and the eyelet in side elevation
  • FIG. 9 shows schematically the forming of lateral keels by having ⁇ the buoyancy tubes disposed downwardly
  • FIG. 10 shows a cross-sectional shape of the buoyancy tubes with xingrboards; i y,
  • FIG. l1 shows an alternative cross-sectional shape to FIG. 10';
  • FIG. l2 shows an alternative cross-sectional shape to FIG. 10
  • FIG. 13 shows an alternative cross-sectionalshape to FIG. l
  • FIG. ⁇ 14 shows the use of bracing boards in the buoyancy tubes
  • FIG. 15 shows the ⁇ use of a cross-sectional shape ofk FIG. i3 with a possibility of tting a lee board box or htting lee boards outside on the buoyancytube;
  • FIG. 16 shows the use of ⁇ a cross-sectional shapeac.- kcording to FIG. 1l.
  • FIG. 1 shows buoyancy tubes 1 which havestern'iins Z.
  • Floor boardse, 7 are rigidly cemented to the oor skin 3 in the shaded regions 4, andare therefore undetachable.
  • the intermediateY boards 8, 9 are ilexiblyinterconnected bymeans of a rubber band 10.
  • Supporting members 11, 12, which are rigidly connected with the floor boards 6, 7, permit rapidassem'bly when by moving inthe direction of the arrow 11i the intermediate boards .8, 9 iiushly fill the space between tli'e floor boards and are removable.
  • the ledges 14,15vare' subsequently tted.
  • Bolts 16, ⁇ 17 fixed in the floor and intermediate boards project through the ledges 14, 15.
  • Nuts 1S fittedthereon then press the ledges 14,15 against the base i.e. against lthe ,tloor boards 6, 7 and intermediate'boards 8, 9. lBy-.this means there is obtained a statically loadable unit.
  • An angle bracket 19 is rigidly mounted on the rear floor board 7.
  • the buoyancy tubes have bulges (not shown in the drawings) at the points 2,2, 23 so that the transom can transmit the drive of an outboard motor to the buoyancy tubes and the floor boards.l
  • the skin 3 of the floor is passed over the stern iin VZ as cover 25 and rigidly cemented to the rear V floor board 7 which also forms the stern tins.
  • the rear transom wall 24 now formed by the loosely suspended p Y tion'which' is like the axis of rotation 27 of thefinter ⁇ mediatev boards.
  • the stern portion with transom Ztis constructed asin FIGS. 1 to 4.
  • FIGS. ⁇ 7 to 9 the same numerals denote the same parts.
  • the ledges 14 herein are provided with hook-s 33, which engage in bores 34 of the angle members 35 and, when straightening, as shown inFIGS. 7, 8, brace the floor boards 6 with one another.
  • the drawing herein is not-to scale.
  • FIG. 9 shows that the floor boards 6 are so spaced 36 from ⁇ the buoyancy tubes v1 that the latter sink by this distance thereby forming lateral runners or keels which increase the safety when the inflatable boat turns.
  • the buoyancy tubes are formed by part sections Sd-which are cemented to fastening boards 39.
  • The'fastening boards which may be pressed wood and be proiled, or be'straight plywood panels, impart the diiierent travelling properties to the boat.
  • FIG.'l l5 the capsizing of an inflatable boat about aV capsizing edge dllwith such fastening boards is rendered ditiicult, as ,the distance 41, which represents the tilting surface, is greater than the distance 52 of the normal round prole of the buoyancytubes.
  • a lee board box 42 or a ⁇ center board casing having a lee board sov or center Vboardtherein (not shown).
  • bracing boards 44 which additionally supvport the floor boards 6 by means .of bracing struts 145.
  • the oorboards in turn are also cemented to the skin v3 of the boat. Of course the distancebetween the buoyancy tubes 1 is much greater than stated in'FIG. 14.
  • bracing strutsv may also be used for fixing eyeletsdb for
  • FIGS. 5 and 6 denote the same parts. Only the axis of rotation or hinge axis of the intermediate boards 8, 9 differ. While in FIGS. 1.to'4
  • the axis of rotation 27 is disposed transversely or at rightl angles to the direction of travel 21, this axis of rotation herein is arranged parallel to the direction of travel or theV arrow 21.
  • the ledges 28, 29 are of rib like construcposition.
  • the Hoor boards 6, 7 of FIGS. 5 and 6 may form an integral whole or they may have au axis of rotasails or ⁇ hooks 47 for hooking seats into position.
  • FIG; v16 v shows that a'transom 43 with support-S149 yis fixed eg. by hooking in position on the fastening boards 39.
  • the motor power isnow transmitted by the fastening, bracing and iloor boards forming a static unit, to the whole boat. Additional holders 51 e.g. for itting row locks may also be provided.
  • a step for a mast may be provided on one of the ⁇ iloorboards which-is cemented to the skin and chain plates for the standing rigging can be provided along the ⁇ edges of the loor.
  • the invention is adapted to be applied to all possibilities ⁇ wherein boards or rigid and loadable parts are rigidly connected by cementing to parts of the skin of the boat which impart a greater loading capacity and stability to the boat without impairng its collapsibility.
  • An inflatable collapsible boat comprising flexible sheet material defining a pair of spaced buoyant tubes connected at one end to form the bow of the boat and spaced at the other end to form the stern of the boat, there being iiexiblematerial between saidspacedtubes defining the bottom of the boat, a pair of rigidoor boards positioned side by side and undetachably secured' to said flexible bottom, said boards having adjacent edges in spaced relation, a pair 'of pivotally connected removable rearmost undetachable oorboard extending aft of said d transom being covered with said flexible sheet material and defining stern tins.
  • An inflatable collapsible boat as claimed in claim 1 and further comprisingy a pair of longitudinally extending ledges adjacent said tubes secured to said removable and undetachable floor boards to form a rigid load supporting unit with the same.
  • An inatable collapsible boat comprising flexible sheet material defining a pair of spaced buoyant tubes connected at one end to form the bow of the boat and spaced at the other end to form the stern of the boat, there being flexible material between said spaced tubes defining the bottom of the boat, a pair of rigid iioor boards undetachably secured to said flexible bottom and extending parallel to said buoyant tubes, said rigid lloor boards being transversely spaced with respect to their adjacent edges, a plurality of transversely extending ledges secured to said undetachable lloor boards, said ledges being bent downwardly so as to form a keel for said boat, a pair of removable lloor boards between said spaced tloor boards, said last-named pair of boards being pivotally connected along edges thereof which are substantially parallel to the said spaced edges, a transom extending upwardly from the rearmost of said undetachable oor boards between said tubes and spaced inwardly of the stern end of said
  • An inflatable boat having a flexible outer skin bottom and sides of laterally spaced inliatable buoyant longitudinally extending tubes, said skin bottom between said tubes having rigid bottom pieces positioned thereon, certain of said rigid bottom pieces having their adjacent edges spaced apart and nseparably attached to the skin bottom, others of said rigid bottom pieces being flexibly hinged together along an edge substantially parallel to said spaced apart edges and inserted under compression into the space between said spaced apart edges whereby said skin bottom between said edges is held under tension ina stretched condition.
  • each of said spaced longitudinally extending side pieces terminate rearwardly in a stern lin.

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  • 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)
  • Toys (AREA)
  • Tents Or Canopies (AREA)
US136698A 1961-03-08 1961-09-01 Collapsible boat Expired - Lifetime US3170174A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0041950 1961-03-08

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US3170174A true US3170174A (en) 1965-02-23

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US136698A Expired - Lifetime US3170174A (en) 1961-03-08 1961-09-01 Collapsible boat

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US (1) US3170174A (de)
CH (1) CH407793A (de)
FR (1) FR1313102A (de)
GB (1) GB980705A (de)
LU (1) LU40488A1 (de)
SE (1) SE300569B (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3451078A (en) * 1966-01-31 1969-06-24 David V Edwards Inflatable boats
US4660497A (en) * 1984-06-07 1987-04-28 Cochran William H Boltrope attachment of flexible hull portion to a rigid hull portion of an rib
US4807555A (en) * 1987-02-05 1989-02-28 H & H Sales Corporation Rigidifier for an inflatable boat
US6367404B1 (en) * 1999-04-02 2002-04-09 Steven Callahan Folding rigid-inflatable boat
US6684808B2 (en) 2000-03-29 2004-02-03 Steven Callahan Boat stability and directional-control device
US6739278B2 (en) 2000-03-29 2004-05-25 Steven Callahan Folding rigid-bottom boat
JP2013530099A (ja) * 2010-07-13 2013-07-25 ゾディアック ミルプロ アンテルナショナル 膨張可能な船縁部を有するボートの改良
WO2018052333A1 (en) * 2016-09-15 2018-03-22 Golitsin Aleksandr Borisovich Inflatable boat with bottom boards and method for boat disassembly
RU202798U1 (ru) * 2020-08-13 2021-03-09 Сергей Алексеевич Каржаев Надувная переносная лодка
US11091228B2 (en) * 2017-05-29 2021-08-17 Zodiac Milpro International Inflatable boat with D-shaped wall
WO2024159307A1 (en) * 2023-01-30 2024-08-08 Varga Kristofer George Inflatable boat with a drop stitch bottom for use with a motor
US12545366B2 (en) 2022-07-06 2026-02-10 Joy Sports Co., Ltd. Rigid watercraft with inflatable portion
US12630262B2 (en) 2023-01-30 2026-05-19 Kristofer George VARGA Inflatable boat with a drop stitch bottom for use with a motor

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422135A1 (fr) * 1978-04-06 1979-11-02 Angeviniere Sa Installation d'un canon sur une embarcation pneumatique
FR2471545A1 (fr) * 1979-12-13 1981-06-19 Hennebutte Georges Structure gonflable, notamment flotteur ou aile d'avion, munie de moyens de conformation
FR2549797A1 (fr) * 1983-07-29 1985-02-01 Jausions Henri Bateau pneumatique a ossature interne
DE3932132A1 (de) * 1989-09-27 1991-04-04 Hanel Wiking Schlauchboot Schlauchboot mit vergroessertem innenraum
GB8928881D0 (en) * 1989-12-21 1990-02-28 Avon Inflatables Ltd Inflatable boat and deck therefor
FR2857934B1 (fr) * 2003-07-22 2005-09-30 Zodiac Int Embarcation pneumatique equipee de volet stabilisateur
IT202100010388A1 (it) * 2021-04-26 2022-10-26 Fab Italy Design S R L Tubolare gonfiabile sagomato e unità da diporto comprendente tale tubolare

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1794895A (en) * 1929-08-07 1931-03-03 Dorothy K Hall Boat construction
US2478042A (en) * 1945-11-02 1949-08-02 William E Elling Lifeboat
US2588084A (en) * 1950-07-18 1952-03-04 Bushfield Keith Combined trailer and pontoon boat
US2698447A (en) * 1952-02-20 1955-01-04 Thomas A Potts Inflatable outboard motor boat
FR1103804A (fr) * 1954-04-29 1955-11-07 Scheibert Dt Schlauchbootfab Radeau pneumatique à moteur
US2949616A (en) * 1956-08-03 1960-08-23 Zodiac Soc Collapsible boats

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1794895A (en) * 1929-08-07 1931-03-03 Dorothy K Hall Boat construction
US2478042A (en) * 1945-11-02 1949-08-02 William E Elling Lifeboat
US2588084A (en) * 1950-07-18 1952-03-04 Bushfield Keith Combined trailer and pontoon boat
US2698447A (en) * 1952-02-20 1955-01-04 Thomas A Potts Inflatable outboard motor boat
FR1103804A (fr) * 1954-04-29 1955-11-07 Scheibert Dt Schlauchbootfab Radeau pneumatique à moteur
US2949616A (en) * 1956-08-03 1960-08-23 Zodiac Soc Collapsible boats

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3451078A (en) * 1966-01-31 1969-06-24 David V Edwards Inflatable boats
US4660497A (en) * 1984-06-07 1987-04-28 Cochran William H Boltrope attachment of flexible hull portion to a rigid hull portion of an rib
US4807555A (en) * 1987-02-05 1989-02-28 H & H Sales Corporation Rigidifier for an inflatable boat
US6367404B1 (en) * 1999-04-02 2002-04-09 Steven Callahan Folding rigid-inflatable boat
US6684808B2 (en) 2000-03-29 2004-02-03 Steven Callahan Boat stability and directional-control device
US6739278B2 (en) 2000-03-29 2004-05-25 Steven Callahan Folding rigid-bottom boat
JP2013530099A (ja) * 2010-07-13 2013-07-25 ゾディアック ミルプロ アンテルナショナル 膨張可能な船縁部を有するボートの改良
WO2018052333A1 (en) * 2016-09-15 2018-03-22 Golitsin Aleksandr Borisovich Inflatable boat with bottom boards and method for boat disassembly
US11091228B2 (en) * 2017-05-29 2021-08-17 Zodiac Milpro International Inflatable boat with D-shaped wall
RU202798U1 (ru) * 2020-08-13 2021-03-09 Сергей Алексеевич Каржаев Надувная переносная лодка
US12545366B2 (en) 2022-07-06 2026-02-10 Joy Sports Co., Ltd. Rigid watercraft with inflatable portion
WO2024159307A1 (en) * 2023-01-30 2024-08-08 Varga Kristofer George Inflatable boat with a drop stitch bottom for use with a motor
US12630262B2 (en) 2023-01-30 2026-05-19 Kristofer George VARGA Inflatable boat with a drop stitch bottom for use with a motor

Also Published As

Publication number Publication date
FR1313102A (fr) 1962-12-28
LU40488A1 (de) 1961-10-09
GB980705A (en) 1965-01-20
SE300569B (de) 1968-04-29
CH407793A (de) 1966-02-15

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