FR2574045A1 - Autonomous rolling device for a multi-hulled craft. - Google Patents

Abstract

This device consists in adding three or four wheels, R 1 front wheels, R 2 rear wheels, some of the wheels being driving wheels and able to be lifted up, so as to be able to remove the said multi-hulled craft from the water and make it move across land in an autonomous fashion. This device, R 1, R 2, J 1, J 2, M, via technical means suitable for each model of multi-hulled craft, may be of any design insofar as concerns the assembly, the powering, the housing, the dimensions, etc. This device avoids handling using a crane and makes it possible to come onto dry land in an autonomous fashion for all sorts of reasons. Huge parking lots with an access ramp could be envisaged F 3 in place of the costly port for large very wide multi-hulled craft.

Description

Autonomous rolling device for elticoque
The present invention relates to a rolling device, autonomous, on land for multihulls of any size, intended to allow said multihull to get out of the water alone and to move on land.

 It often happens that a large multihull owner wishes to take his boat out of the water. Currently, only the crane is very expensive or a suitable cart not always available. Also, the object of the device, object of the invention is to allow this operation in an autonomous manner and this on any range or ramp not too inclined.

 This device is in the form of two self-propelled and foldable wheels at the front of the multihull and one or two pivoting free wheels foldable at the rear.

 The details of the invention will be better understood from the description which follows, referring to the accompanying drawings which show by way of non-limiting example an embodiment of the device.

 Figure (1) is an elevational view.

 Figure (2) is a top view.

 Figure (3) is an example of parking.

The device consists of
At the front of the multihull two legs (J 1) located on either side of the link arm (L 1), mounted on articulation allowing them to be put in vertical or horizontal position.

 Each leg (3 1) is provided with a wheel (R 1) driven by a motor (M) located in or on the said arm.

 At the rear of the multihull one or two legs (J 2) is or are fixed (s) on the link (L 3) removably or foldable.

 The rear leg (s) is (or are) fitted with a free and pivoting wheel.

 The front legs (J 1) are held in their different positions by either: cable, ends, pins, etc ...

 Explanation of maneuver: when the multihull arrives at its place of ascent, it is necessary: to unclamp the two legs (3 1) which were horizontal and come to be positioned vertically, to lock them in this position.

 Fit the rear leg (s) (3 2) (caravan jockey wheel style). Let the multihull come slowly facing towards the beach or the ramp, on its area and put the two motors in forward gear.

 When the front wheels touch the ground, they will tow the multihull on land.

 We saw previously that each leg (3 1) was provided with a motor. We will control the direction like a tank, accelerating or decelerating alternately and if necessary each wheel, hence the usefulness of a pivoting rear wheel.

 To descend, it is possible either to reverse and re-enter the water, or in slow forward.

 Once in the water, unclamp the legs (J 1), put them back in a horizontal position and rebridle them. Remove or reassemble the legs (J 2).

 It goes without saying that the shape of the legs, the choice of engine, transmission, fixing of the elements on the links or the hulls is not limiting and is a function of each type of multihull without departing from the scope of the invention.

This device and its popularization would allow in this period where the berths for large cruise ships, which often make
six meters wide, are rare and very expensive, to create large parking lots
much cheaper to make (Figure 3) and completely sheltered from storms.

Repairs would be very easy, even in isolated and devoid places
of port facilities (example: filling a hull crack in a
small island, on a beach, etc ...).

People only using their multihull during the weekend
would no longer be haunted by a storm in their absence. Wintering would be
ease.

Claims (8)

Claims.  1 - Autonomous rolling device for multihull characterized in that it consists in adding wheels, for certain driving and lifting, in order to be able to get out of the water and to develop the said multihull on land and in an autonomous way.  2 - Device according to claim I and characterized in that the two front wheels (R 1) are driven and independent, the rear wheel or wheels being free and movable.  3 - Device according to claim 1 and characterized in that the wheels do not remain in the driving position during navigation.  4 Device according to claims 1 and 2 characterized in that the two front wheels are driven, which allows as shown in Figure I to get out of the water independently and to evolve on land.  5 - Device characterized in that the two front wheels have independent traction, which makes it possible to rotate the multihull by alternately accelerating or decelerating each wheel if necessary (example: like a tank).  6 - Device characterized in that the wheels can be placed either at the end of the legs and fixed on the links (for example) or at any other location depending on the multihull models  7 - Device characterized in that the technical means of manufacture and motorization will be according to the choice of each.  8- Device characterized by the fact that parking lots with an access ramp (Figure 3) could be envisaged instead of expensive ports and not sheltered from major storms and sheltered, avoiding very expensive cranages.