Lowerable platform with float for a watercraft
OwnerPeter A. Müllerinventor
Life of this patent
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Abstract
The invention relates to a lowerable platform (1) for a water craft (10), which can be also horizontally extended and to which a float (2) is fastened that comprises a closed hollow space (43) or an open hollow space (43), a buoyancy (A) acting upon the float (2) being generated by the air volume (L). As a result, the water craft's proper weight or the payload (N) of e.g. a tender boar (27) on the lowerable platform (1) can be compensated by the buoyancy (A). A hydrodynamic design of the float (2) additionally generates a hydrodynamic buoyancy (D1) which can be varied in terms of its height in relation to the current (S) by means (4, 37, 38, 39), depending on the float (2).
Claims23
A lowerable platform for a watercraft, comprising:
- a float attached below the platform, wherein the float has a hydrodynamic shape and includes one or more stepped edges and generates a buoyancy force which holds the platform above a water line, and
- a working cylinder arranged between a stern area of the watercraft and the lowerable platform and providing a thrust force for lowering the platform below the water line,
- wherein the float has a closed hollow space or an open hollow space with a predetermined basic buoyancy, wherein the closed hollow space contains air with an air volume or water-repellent light foam with an equivalent air volume, or the open hollow space contains attachable hollow bodies with an air volume or adjustable hollow bodies with a variable air volume, and
- an air pump supplying air to the air volume, either under manual control or under control by a controller, for compensating the buoyancy force.
A lowerable platform for a watercraft, comprising:
- a float attached below the platform, wherein the float has a hydrodynamic shape and includes one or more stepped edges and generates a buoyancy force which holds the platform above a water line,
- a working cylinder arranged between a stern area of the watercraft and the lowerable platform and providing a thrust force for lowering the platform below the water line,
- a stationary upper platform located above the lowerable platform in a retracted position of the lowerable platform and constructed to be movable into an tended position laterally in a horizontal direction and upward by a sliding mechanism and a horizontal working cylinder and by operating the working cylinder to form one plane with the lowerable platform,
- wherein the lowerable platform comprises a tender mount which is connected at one end to the lowerable platform with articulated joints and is supported with another end on the lowerable platform by a roller pair, wherein the upper platform comprises ramps facing the tender mount and an opening, allowing the tender mount to move onto the upper platform in an identical direction as the lowerable platform when the lowerable platform is moved from the extended position to the retracted position.
A lowerable platform for a watercraft, comprising:
- a float attached below the platform, wherein the float has a hydrodynamic shape and includes one or more stepped edges and generates a buoyancy force which holds the platform above a water line,
- a working cylinder arranged between a stern area of the watercraft and the lowerable platform and providing a thrust force for lowering the platform below the water line,
- a measurement sensor disposed on the float, wherein the measurement sensor measures as a measurement value the RPM of an outboard motor or of a propeller or the speed of the watercraft, and transmits the measurement value to a controller which according to a program activates a hydraulic unit, in such that the working cylinder causes the lowerable platform with the attached float to lift, in order that a lower edge of the float is wetted in the water flow, either completely or partially or not at all, thereby producing a variable hydrodynamic buoyancy.
Dependencies are inferred from the claim text.