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US 5,634,425 AGranted
Boat hull including moulded shell structure
AssigneeAllied Plastics International Limited
InventorGary D. MacDougall
Life of this patent
Estimating the term…
Abstract
A reinforced plastic hull structure is disclosed, wherein the hull is preferably rotary molded with homogeneously connected inner and outer shell molds, the configuration including a plurality of longitudinally extending stiffening members between the inner and outer shells to which a transverse reinforcing means is connected. The transverse reinforcing means is preferably the unitary floor panel of the boat, which is connected to planar flanges at the freely extending ends of the longitudinally extending stiffening members, both along the central section of the planar floor panel, and at its outward ends.
Claims25
A reinforced plastic boat hull structure, comprising:
- peripherally joined inner and outer shells, said outer shell including interior and exterior surfaces;
- at least two spaced longitudinally extending stiffening members between said inner shell and the interior surface of said outer shell, said stiffening members including spaced intermediate webs extending between said inner shell and the interior surface of said outer shell, thereby forming hollow structures between said stiffening members for reinforcing the plastic boat hull structure;
- and
- reinforcing means extending transversely across the interior of the plastic boat, spanning between and structurally fixed to at least two adjacent ones of said longitudinally extending stiffening members at their juncture with said inner shell to transversely connect said longitudinally extending stiffening members and reinforce the plastic boat hull structure.
1 more element
A reinforced plastic boat hull structure, comprising:
- peripherally joined inner and outer shells, said outer shell including interior and exterior surfaces;
- at least two spaced longitudinally extending stiffening members between said inner shell and the interior surface of said outer shell, said stiffening members including spaced intermediate webs extending between said inner shell and the interior surface of said outer shell, thereby forming hollow structures between said stiffening members for reinforcing the plastic boat hull structure;
- and
- reinforcing means extending transversely across the interior of the plastic boat hull and structurally fixed to said inner shell to transversely reinforce the plastic boat hull structure;
- said reinforcing means extends transversely across the interior of the plastic boat hull structure and is fixed to at least two of said longitudinally extending stiffening members;
- at least two of said longitudinally extending stiffening members include a planar upper flange at said inner shell, said planar flanges being disposed in a common plate;
- said reinforcing means comprises a floor panel supported by said planar upper flanges of said longitudinally extending stiffening members to form a floor for the boat hulls, and;
- connecting means for fixedly connecting said longitudinally extending stiffening members to said floor panel such that said floor panel also provides transverse reinforcing of the boat hull structure.
5 more elements
A reinforced plastic boat hull structure, comprising:
- peripherally joined inner and outer shells, said outer shell including interior and exterior surfaces;
- at least three spaced longitudinally extending stiffening members between said inner shell and the interior surface of said outer shell, said stiffening members including spaced intermediate webs extending between said inner shell and the interior surface of said outer shell, thereby forming hollow structures between said stiffening members for reinforcing the plastic boat hull structure;
- and
- said reinforcing means extending across and fixed to each of said stiffening members;
- all of said longitudinally extending stiffening members include a planar upper flange at said inner shell, with said planar upper flanges being disposed in a common plate;
- said reinforcing means comprises a floor panel supported by said planar upper flanges of said longitudinally extending stiffening members to form a floor for the boat hull, and;
- connecting means for fixedly connecting said longitudinally extending stiffening members to floor panel such that said floor panel provides transverse reinforcing of the boat hull structure.
4 more elements
A plastic boat hull comprising:
- opposed inner and outer shells which are integrally joined around peripheral portions thereof and which are also integrally joined at adjacent regions within said periphery by interior stiffening means including at least two longitudinal stiffening members integrally joined to and extending between said inner shell and said outer shell;
- said longitudinal stiffening members including an upper flange at said inner shell, a lower face at its joining to said outer shell, and an intermediate web between said upper flange and lower face, thereby forming hollow structures between said stiffening members to provide an integrally reinforced plastic boat hull, the upper flanges of said stiffening members being in a substantially coplanar relationship;
- and
- a floor panel of said boat hull supported by said upper flanges of the longitudinal stiffening members and mechanically fixed to the longitudinal stiffening members at spaced locations along the stiffening members to also provide transverse reinforcing to the plastic boat hull shell structure.
1 more element
A plastic boat hull comprising:
- opposed inner and outer shells which are integrally joined around peripheral portions thereof and which are also integrally joined at adjacent regions within said periphery by interior stiffening means including at least two longitudinal stiffening members integrally joined to and extending between said inner shell and said outer shell;
- said longitudinal stiffening members including an upper flange at said inner shell, a lower face at its joining to said outer shell, and an intermediate web between said upper flange and lower face, thereby forming hollow structures between said stiffening members to provide an integrally reinforced plastic boat hull, the upper flanges of said stiffening members being in a substantially coplanar relationship;
- and
- at least one transverse reinforcing member supported by and connected to said upper flanges of the longitudinal stiffening members to provide transverse reinforcing to the plastic boat hull shell structure;
- said transverse reinforcing member including a portion recessed along the intermediate web of the longitudinal stiffening member and an upper surface in coplanar relationship with the upper flanges of said longitudinal stiffening members.
2 more elements
Dependencies are inferred from the claim text.