NL1040998B1 - The use of sandwich panels, consisting of a flexible sheet material and a rigid plate material, to produce a foldable boathull. - Google Patents

The use of sandwich panels, consisting of a flexible sheet material and a rigid plate material, to produce a foldable boathull. Download PDF

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Publication number
NL1040998B1
NL1040998B1 NL1040998A NL1040998A NL1040998B1 NL 1040998 B1 NL1040998 B1 NL 1040998B1 NL 1040998 A NL1040998 A NL 1040998A NL 1040998 A NL1040998 A NL 1040998A NL 1040998 B1 NL1040998 B1 NL 1040998B1
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NL
Netherlands
Prior art keywords
rigid plate
sandwich
foldable
plate material
construction
Prior art date
Application number
NL1040998A
Other languages
Dutch (nl)
Inventor
Jan Veenstra Dr
Original Assignee
Jan Veenstra Dr
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 Jan Veenstra Dr filed Critical Jan Veenstra Dr
Priority to NL1040998A priority Critical patent/NL1040998B1/en
Application granted granted Critical
Publication of NL1040998B1 publication Critical patent/NL1040998B1/en

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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
    • B63B7/06—Collapsible, foldable, inflatable or like vessels having parts of non-rigid material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The use of sandwich panels consisting of sheets of 1) a flexible elastomeric material such as for example EPOM, combined with 2) a more rigid plate material such as aluminum, or fibreglass-reinforced polyester. or another fibre-reinforced polymer, or polyproplylene or another thermoplastic polymer, to construct a foldable boathull. The elastomeric sheet material can be on both si des of the rigid plate material (FIG. 1A and 1D) or on one side (FIG. 1B, 1C, 1E and 1F). A tolding boat typically consistsof 4 (FIG. 1A, 1B and 1C), or 5 (FIG. 1D, 1E and 1F) or more panels of specific shape. The angles between rigid plates can be achieved by leaving a gap (FIG. 1G) or mounting them in a specific angle, using a mold (FIG. 1H). This invention enables the production of a foldable boathull in one piece, which is safe as well as rigid and waterproof.

Description

The use of sandwich panels, consisting of a flexible sheet material and a rigid plate material, to produce a foldable boathull.
This invention relates to foldable boats and more specific to a method of producing a foldable boathull.
Foldable boats have a long history, with patent applications going back to the 19th century. Despite this long history, foldable boats are still perceived by most people as less safe and less stable than ordinary small boats. Hence a method is needed to produce safe, waterproof and rigid foldable boats. This patent discloses such a method.
In the construction of trailers, caravans and campers sandwich plates are in wide use. They usually consist of two outer layers of a very thin but strong plate material and a thick light weight filler plate. The combination of the two materials gives the preferred characteristics to the end result.
In the case of foldable boats it would be ideal to combine the foldability of an inflatable boat and the rigidity of a conventional fibreglass-reinforced polyester boat or a metal boat.
In the present invention a sandwich was developed consisting of the flexible elastomeric material EPDM and fibreglass-reinforced polyester plate, and applied to produce safe, waterproof and rigid foldable boathulls. The elastomeric sheet material can be on both sides of the rigid plate material (FIG. 1A and ID) or on one side (FIG. IB, 1C, IE and IF). A folding boat typically consists of 4 (FIG. IA, IB and 1C), or 5 (FIG. ID, IE and IF) or more panels of specific shape.
Depending on the desired angle in which the sandwich has to bend, the rigid plates are mounted in between or on top of the flexible elastomeric sheets leaving a 0-15mm gap (FIG. 1G). Another possibility is to mount the rigid plates in beteen the flexible elastomeric sheets in the desired angle using a mold (FIG. 1H).
Description of Figure 1:
Figure 1A: elastomeric sheet material on both sides of the rigid plate material to make a 4 panel boat
Figure IB: elastomeric sheet material on upper side of the rigid plate material to make a 4 panel boat
Figure 1C: elastomeric sheet material on lower side of the rigid plate material to make a 4 panel boat
Figure ID: elastomeric sheet material on both sides of the rigid plate material to make a 5 panel boat
Figure IE: elastomeric sheet material on upper side of the rigid plate material to make a 5 panel boat
Figure IF: elastomeric sheet material on lower side of the rigid plate material to make a 5 panel boat
Figure 1G: rigid plates mounted in between the flexible elastomeric sheets straight, leaving a gap
Figure 1H: rigid plates mounted in between the flexible elastomeric sheets in an angle, leaving a gap

Claims (11)

1. Gebruik van een sandwich van 2 materialen bestaande uit 1) een flexibel elastomeer materiaal en 2) een rigide plaat materiaal voor de constructie van een opvouwbare bootromp.Use of a sandwich of 2 materials consisting of 1) a flexible elastomeric material and 2) a rigid plate material for the construction of a foldable boat hull. 2. Gebruik van een sandwich van 2 materialen voor de constructie van een opvouwbare bootromp zoals geclaimd in conclusie 1, waarbij het flexibele elastomeer materiaal bestaat uit rubber of EPDM.Use of a sandwich of 2 materials for the construction of a foldable boat hull as claimed in claim 1, wherein the flexible elastomeric material consists of rubber or EPDM. 3. Gebruik van een sandwich van 2 materialen voor de constructie van een opvouwbare bootromp zoals geclaimd in conclusie 1, waarbij het rigide plaat materiaal bestaat uit glasvezel versterkt polyester.Use of a sandwich of 2 materials for the construction of a foldable boat hull as claimed in claim 1, wherein the rigid plate material consists of glass fiber reinforced polyester. 4. Gebruik van een sandwich van 2 materialen voor de constructie van een opvouwbare bootromp zoals geclaimd in conclusie 1, waarbij het rigide plaat materiaal bestaat uit aluminium.Use of a sandwich of 2 materials for the construction of a foldable boat hull as claimed in claim 1, wherein the rigid plate material consists of aluminum. 5. Gebruik van een sandwich van 2 materialen voor de constructie van een opvouwbare bootromp zoals geclaimd in conclusie 1, waarbij het rigide plaat materiaal bestaat uit een ander metaal dan aluminium.Use of a sandwich of 2 materials for the construction of a foldable boat hull as claimed in claim 1, wherein the rigid plate material consists of a metal other than aluminum. 6. Gebruik van een sandwich van 2 materialen voor de constructie van een opvouwbare bootromp zoals geclaimd in conclusie 1, waarbij het rigide plaat materiaal bestaat uit een andere vezel versterkte polymeer dan die genoemd in conclusie 3.Use of a sandwich of 2 materials for the construction of a foldable boat hull as claimed in claim 1, wherein the rigid plate material consists of a fiber reinforced polymer other than that mentioned in claim 3. 7. Gebruik van een sandwich van 2 materialen voor de constructie van een opvouwbare bootromp zoals geclaimd in conclusie 1, waarbij het rigide plaat materiaal bestaat uit polypropyleen.Use of a sandwich of 2 materials for the construction of a foldable boat hull as claimed in claim 1, wherein the rigid plate material consists of polypropylene. 8. Gebruik van een sandwich van 2 materialen voor de constructie van een opvouwbare bootromp zoals geclaimd in conclusie 1, waarbij het rigide plaat materiaal bestaat uit een andere thermoplastische polymeer dan die genoemd in conclusie 7.Use of a sandwich of 2 materials for the construction of a foldable boat hull as claimed in claim 1, wherein the rigid plate material consists of a different thermoplastic polymer than that mentioned in claim 7. 9. Gebruik van een sandwich van 2 materialen voor de constructie van een opvouwbare bootromp zoals geclaimd in conclusies 1 tot en met 8, waarbij de sandwich bestaat uit 1 rigide plaat laag en 2 flexibele elastomere lagen.Use of a sandwich of 2 materials for the construction of a foldable boat hull as claimed in claims 1 to 8, wherein the sandwich consists of 1 rigid plate layer and 2 flexible elastomeric layers. 10. Gebruik van een sandwich van 2 materialen voor de constructie van een opvouwbare bootromp zoals geclaimd in conclusies 1 tot en met 8, waarbij de sandwich bestaat uit 1 rigide plaat laag en 1 flexibele elastomere laag.Use of a sandwich of 2 materials for the construction of a foldable boat hull as claimed in claims 1 to 8, wherein the sandwich consists of 1 rigid plate layer and 1 flexible elastomeric layer. 11. Gebruik van een sandwich van 2 materialen voor de constructie van een opvouwbare bootromp zoals geclaimd in conclusies 1 tot en met 8, waarbij de sandwich bestaat uit andere combinaties van rigide plaatlagen en flexibele elastomere lagen dan die geclaimd in conclusie 9 en 10.Use of a sandwich of 2 materials for the construction of a foldable boat hull as claimed in claims 1 to 8, wherein the sandwich consists of combinations of rigid plate layers and flexible elastomeric layers than those claimed in claims 9 and 10.
NL1040998A 2014-10-15 2014-10-15 The use of sandwich panels, consisting of a flexible sheet material and a rigid plate material, to produce a foldable boathull. NL1040998B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL1040998A NL1040998B1 (en) 2014-10-15 2014-10-15 The use of sandwich panels, consisting of a flexible sheet material and a rigid plate material, to produce a foldable boathull.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1040998A NL1040998B1 (en) 2014-10-15 2014-10-15 The use of sandwich panels, consisting of a flexible sheet material and a rigid plate material, to produce a foldable boathull.

Publications (1)

Publication Number Publication Date
NL1040998B1 true NL1040998B1 (en) 2016-10-04

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Application Number Title Priority Date Filing Date
NL1040998A NL1040998B1 (en) 2014-10-15 2014-10-15 The use of sandwich panels, consisting of a flexible sheet material and a rigid plate material, to produce a foldable boathull.

Country Status (1)

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NL (1) NL1040998B1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748670A (en) * 1971-05-28 1973-07-31 W Musson Foldable boat
JPS61211189A (en) * 1985-03-15 1986-09-19 Nissan Shatai Co Ltd Hull
GB2451237A (en) * 2007-07-23 2009-01-28 Mark Walters A foldable boat hull structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748670A (en) * 1971-05-28 1973-07-31 W Musson Foldable boat
JPS61211189A (en) * 1985-03-15 1986-09-19 Nissan Shatai Co Ltd Hull
GB2451237A (en) * 2007-07-23 2009-01-28 Mark Walters A foldable boat hull structure

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Effective date: 20171101