US 5,191,854 AGranted

Boat

AssigneeMarcel Lehmann

InventorsHans-Rudolf Lehmann, Marcel Lehmann

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Abstract

The boat has a flap (1) forming a part of its V- or spoon-shaped bow and being unfoldable therefrom. This flap is supported by means of projections (9a,9b) arranged on both of its sides on swivel joints (13a,13b) set back into the inside of the boat with respect to the inner wall of the bow. Upon pivoting the flap (1) out of the bow opening (15), the flap is swung away from the bow wall portion with the uncovering of an interspace (2) between the flap and the bow wall portion which latter lies underneath the bow opening (15). The flap outside wall can be urged underneath the surface of the water and can be fixed in its position. The flap (1) is designed as a buoyant member, and when serving as a working or recreational platform, etc., can be folded back into the bow of the boat in such a way that the hydro- and aerodynamic properties as well as the esthetic appearance of the bow are not impaired. The boat according to this invention can thus be utilized, without restriction of its full functional ability, as a rescue boat, salvage boat, pleasure boat, and speedboat. The configuration of the flap (1) acting as a buoyant member makes its use possible without impairing the stability of the boat; in the unfolded condition, this configuration even enhances the capsizing stability of the boat. Furthermore, the design of the boat hull is such that the stern engines, when a curve is traversed, do not leave the water (4), and the boat exhibits a very high capsizing stability.

Claims11

Dependent claims

A boat with a stern and a bow comprising,

a portside and a starboard boat side with an inner and an outer wall adjacent to the interior and exterior of the boat respectively,
a bow opening (15) in said bow extending from the interior to the exterior of the boat, a bow outer wall portion underneath said bow opening (15), a flap (1) closing said bow opening (15) and forming part of said bow, means connected to move said flap (1) between a closed position closing said bow opening (15) and an open position pivoted out of said bow opening (15) in a direction exterior of the boat,
said flap (1) having an inner and an outer wall, and a bottom edge portion,
two bow side parts adjacent said bow opening (15) at said portside and said starboard boat side respectively having an inner and an outer wall,
said outer wall of said flap (1) having a V-shaped contour,
said outer walls of said two bow side parts and said outer wall of said flap (1), when said bow opening (15) is closed by said flap (1), forming a V-shaped bow,
said means connected to move said flap (1) including at least one projection (9a, 9b) extending from said flap (1) into said interior of the boat,
at least one swivel joint means (13a, 13b) set back into said interior of said boat relative to said inner wall of said flap (1), connecting said projection (9a, 9b) to the inner wall of the boat, and
said swivel joint means (13a, 13b) and projection (9a, 9b) positioned so that when moving said flap (1) from the closed positioned to the open position to open said bow opening (15), said bottom edge portion of said flap (1) is moveable partly underneath said bow opening (15) forming an open space (2) between said bottom edge portion of said flap (1) lying underneath said bow opening (15) and said outer bow wall portion underneath said bow opening (15).

6 more elements

A boat having a bow, a stern, a propeller engine mounted at the stern, an outside bottom hull (35) with a blunt cornered keel, a portside outer wall (37) and a starboard side outer wall (37) forming an outside hull with said outside bottom hull (35), the outside hull having a bow portion extending rearwardly from said bow and a sternside portion extending forwardly from said stern, and a medial portion between said bow portion and said sternside portion, comprising

an angular transition (36) connecting said outside bottom hull (35) and said portside outer wall (37), and connecting said outside bottom hull (35) and said starboard side outer wall (37), respectively, at the bow portion of said boat outside hull,
a round transition (39) connecting said outside bottom hull (35) and said portside outer wall (37), and connecting said outside bottom hull (35) and said starboard side outer wall (37), respectively, at the sternside portion of said boat outside hull,
and said angular transition (36) passing over into said round transition (39) at said medial portion of said boat outside hull,
whereby the maneuvering curve radius of the boat is decreased enabling the bow to be maneuvered with greater accuracy to a desired target.

1 more element

Dependencies are inferred from the claim text.