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Patent Searching and Data


Title:
PONTOON
Document Type and Number:
WIPO Patent Application WO/2018/044223
Kind Code:
A1
Abstract:
The present invention relates to a pontoon configured to float in water. Particularly, the pontoon of the present invention comprises a reinforced concrete shell with at least one opening (9) mounted in the concrete deck, float bodies (25) in the form of separate closed plastic containers are arranged inside the concrete shell, and means (12, 16) to irrevocably close the opening (9) is provided.

Inventors:
TÖRNBOM, Per (Sparbanksvägen 4, Hägersten, 129 32, SE)
Application Number:
SE2017/050871
Publication Date:
March 08, 2018
Filing Date:
August 31, 2017
Export Citation:
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Assignee:
TÖRNBOM, Per (Sparbanksvägen 4, Hägersten, 129 32, SE)
International Classes:
B63B35/34; E01D15/14
Foreign References:
GB2435013A2007-08-15
GB426773A1935-04-09
US5117775A1992-06-02
US20050223964A12005-10-13
GB2469995A2010-11-10
Attorney, Agent or Firm:
EHRNER & DELMAR PATENTBYRÅ AB (Drottninggatan 33, Stockholm, 111 51, SE)
Download PDF:
Claims:
Claims

1. A pontoon configured to float in water, characterized in that it comprises a reinforced concrete shell, at least one opening (9) which is provided in an upper deck (7) of the concrete shell, float bodies (25) arranged inside the concrete shell in the form of separate, closed plastic containers, and closure means (12, 16) for irrevocable closing the opening (9).

2. The pontoon according to claim 1, characterized in that the closure means for the opening (9) comprise a frame (12) and at least one hatch (16) that is removably connectable to the frame (12).

3. The pontoon as claimed in claim 1 or 2, characterized in that the float bodies (25) are received in a plurality of casings (26), the casings (26) being located inside the concrete shell.

4. The pontoon according to claim 3, characterized in that the opening (9) and the casings (26) have such mutual dimensions that the casings (26) can be brought to pass through the opening (9).

5. The pontoon according to any of the preceding claims, characterized in that the concrete shell comprises the bottom (1), two side walls (3), two end walls (5) and a deck (7).

6. The pontoon according to claim 5, characterized in that the concrete shell element is reinforced by reinforcement meshes (15) that are centred with respect to the width of said elements.

7. The pontoon according to claim 6, characterized in that the bottom (1) has a V-shape in cross- section.

8. The pontoon according to any of the preceding claims, characterized in that a fender (21) extends around the concrete shell, and that the fender (21) is located at a distance from the deck (7) which corresponds to about 1/3 of the height of the concrete shell.

Description:
PONTOON

TECHNICAL FIELD OF INVENTION

The present invention relates to a pontoon comprising a reinforced concrete shell, the pontoon being configured to flow in water.

STATE OF THE ART

From WO 03/097441 a platform is known, which comprises threaded insertions in which a plurality of containers can be screwed. Of course, it is assumed that the container has threads that can be received in the threaded insertions of the platform. A plurality of platforms can be arranged to be included in a dock. This is shown in Fig. 4 of WO 03/097441.

OBJECTS AND FEATURES OF THE INVENTION

A primary object of the present invention is to provide a pontoon of the initially defined type, of which the interior space defined by the reinforced concrete shell is filled with float bodies in the form of sealed plastic containers, i.e. the plastic containers comprise an internal volume that is hermetically sealed. This means that liquid or gas cannot penetrate into the interior of the containers.

A further object of the present invention is that the internal space of the reinforced concrete shell should be available, e.g. for the insertion of float bodies into the internal space, but also for inspection of the internal space as well as the float bodies housed in said space.

At least the primary object of the present invention is realized by means of a pontoon which has the characteristics specified in the following independent claim 1. Preferred embodiments of the invention are defined in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Below, a preferred embodiment of the invention will be described with reference to the

accompanying drawings, of which:

Fig. 1 shows a vertical section through a pontoon according to the present invention;

Fig. 2 is a perspective view of a pontoon according to the present invention;

Fig. 3 is a perspective view of a steel body included in the pontoon according to the present invention;

Fig- 3A shows an enlarged detail of a corner of the steel frame;

Fig- 4 shows an end view of an angle bar that is included in the steel frame according to the present invention;

Fig- 5A is a perspective view of a frame and a gap that is elevated with respect to the frame, the frame being intended to be mounted in a deck of a concrete structure of the pontoon according to the present invention;

Fig. 5B shows a perspective view in which the hatch is mounted on the frame; and

Fig. 6 shows a detail of a bar, wherein a number of bars are included in the pontoon

according to the present invention. DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION

As is apparent from Fig. 1, the pontoon of the present invention comprises a bottom, four side walls and a deck.

In order to produce the pontoon of the present invention, a traditional mould is constructed for the parts of the pontoon. Since the construction of the mould is handled conventionally, this is not further described in the present patent application.

Fig. 1 shows a vertical section through the pontoon and in Fig. 2 a perspective view of the pontoon is shown. The pontoon of the present invention comprises a bottom 1, two longitudinal sidewalls 3, two end walls 5 (of which only one is shown in Fig. 2), and an upper deck 7. The sidewalls 3 and the end walls 5, respectively, are opposed to each other. For exemplifying and non-limiting purposes, it may be noted that a suitable wall thickness for the pontoon of the present invention is about 70 mm.

As is apparent, in particular from Fig. 1, the bottom 1 of the pontoon slants from the longitudinal side walls downwards to a lowest point 8, the bottom 1 of the pontoon hence being V-shaped. This ensures that the part of the mould that forms the bottom of the pontoon 1 is properly filled with concrete in connection to the casting of the pontoon.

As is apparent from Fig. 3, the pontoon of the present invention also includes a steel frame which in the illustrated embodiment comprises a box shaped frame. The frame consists of a plurality of first angle bars 10, see Fig. 4, with the inner sides of each angle bar 10 facing the interior of the pontoon, while the outer sides of each angle bar 10 face away from the interior of the pontoon. This is shown in Fig. 3A, which shows a detail of the rear right corner of the steel frame in Fig. 3. Fig. 3A also shows that in the area of the corners of the frame the angle bars 10 are connected to each other, for example by welding or by bolting. The two angle bars 10, located in conjunction to the bottom 1 and the end walls 5 of the pontoon, have a subtle V-shape for conformity with the V-shape of the bottom.

From Figs. 1 and 3 it is apparent that the steel frame according to the present invention also comprises a plurality of diagonal bars 11, each diagonal bar 11 having its one end attached to an upper angle bar 10 of a first side wall 3 while said diagonal bar 11 having its opposite end attached to a lower angle bar 10 of a second opposed side wall 3. As noted above, the first and second side walls 3 are opposed to each other. As can be seen from Figs. 1 and 3, the diagonal bars 11 are arranged to intersect with each other. The steel frame is integrated with the mould (not shown) for concrete casting, wherein the first angle bars 10 and the ends of the diagonal sticks 11 are located inside the mould.

A frame 12, see Fig. 1, defining an opening 9 is integrated with the part of the mould that defines the space that during the casting forms the deck 7. The frame 12 is shown in more detail in Fig. 5A, showing that the frame 12 comprises four additional angular bars 13 that are interconnected, preferably by welding, in the area of the corner of the frame 12. As shown in Figs. 5A and 5B, the frame 12 is provided with a plurality of anchoring means 14, which in the shown embodiment are generally Y-shaped and that the crutch of the Y is located at the free end of the anchoring means 14. In connection with the casting of the concrete shell, the anchoring means 14 will be moulded into the deck 7. The crutch of the Y-shaped anchoring means 14 ensures that there is a good adhesion between the anchoring means 14 and the concrete.

At the moulding, a plurality of tubes 20, preferably plastic, are provided to extend between the spaces of the mould where the side walls 3 are to be moulded. These plastic pipes 20 extend between the outer limiting surfaces of the mould, i.e. the mould surfaces of the side walls 3 which are located outermost. The plastic tubes 20 are preferably located so as to be horizontal at normal use of the pontoon. For exemplifying and non-limiting purposes, it may be mentioned that for a length of the pontoon of about 30 m, approximately 10 plastic tubes 20 are arranged. In this case the pontoon may have a width of 3-4 m which also substantially corresponds to the length of each plastic pipe 20.

Fig. 1 is a sectional view through the concrete shell, which is casted in a conventionally prepared mould. The concrete shell shown in Fig. 1 defines the bottom 1, side walls 3 and deck 7 of the pontoon. As shown in Fig. 1, the bottom 1, sidewalls 3 and deck 7 are reinforced by the provision of reinforcement meshes 15 in the bottom 1, sidewalls 3 and deck 7. The reinforcement meshes 15 are centred with respect to the thickness of the listed elements, i.e. the reinforcement mesh 15 is embedded in the middle of the elements with respect to their thickness.

During casting the concrete shell in the prepared mould, the angular bars 10 and the ends of the diagonal bars 11 will be casted into the concrete shell, see Fig. 1. This also applies to the frame 12, the anchoring members 14, the reinforcement mesh 15, and the ends of the plastic tubes 20.

By studying Fig. 2 it may be recognized that during moulding of the concrete shell in the prepared mould, two end walls 5 are formed, which are opposed to each other.

As shown in Fig. 5A, the pontoon of the present invention comprises a hatch 16 which is connected to the frame 12. In Fig. 5B, it is shown how the hatch 16 is lowered to a position where said hatch 16 closes the opening 9 defined by the frame 12. The hatch 16 is suitably anchored in the frame 12, preferably by bolts.

As is apparent from Figs. 1 and 2, the pontoon of the present invention comprises a fender 21, which, in accordance with the illustrated embodiment, extends around the pontoon of the present invention. Preferably, the fender 21 is made of recycled plastic and conveniently located at a height from the deck 7 of the pontoon that approximately corresponds to 1/3 of the height of the pontoon.

Bars 22, which are threaded at their ends, are received in the plastic tubes 20. This is shown in more detail in Fig. 6. The bars 22 are of such a length that they extend through the plastic tubes 20, through two opposite sidewalls 3, through two opposite parts of the fender 21, and further a portion outside of the fender parts, the end portions of the bar 22 being provided with threads. The bars 22 run freely in the plastic tubes 20. At the threaded ends of the bars 22, nuts 23 are provided, see Fig. 6, the nuts 23 being wrenched to a suitable tightening torque so that the portions of the fender 21 that are located vertically along the side walls of the pontoon 21 are securely anchored, and so that a stabilization of the pontoon is provided.

The above described pontoon, comprising the concrete shell, floats in water according to Archimedes principle. However, if the concrete shell is subject to damage so that water can pass the concrete shell, the pontoon will sink to the bottom of the volume of water in which the pontoon is located. To prevent the above-described action, the concrete shell is filled with float bodies 25, preferably in the form of plastic bottles or plastic bottles. A basic idea of the present invention is that as float bodies

25, sealed plastic containers which are normally recycled or thrown directly into the trash can be used, i.e. Plastic containers for which no return is paid. Plastic bottles such as deposit bottles may of course also be used but these should as much as possible be returned to recover the deposit.

As shown schematically in Fig. 1, it may be convenient to pack the float bodies 25 into flexible casings

26, these caps may also be made of plastic. By packing the float bodies 25 in the casings 26, the handling of the float bodies 25 is simplified in connection with inspection and, possibly, replacement of float bodies 25. In each casing 26 a suitable number of float bodies 25 are packed, the number being dependent on the size of the float bodies 25. In this connection, it should be noted that the size of the float bodies may vary and that in one specific casing 26 float bodies 25 of different volume, may be packed.

The float bodies 25 are supplied to the interior of the concrete shell via the opening 9 defined by the frame 12. Of course, the total volume of a casing 26 filled with float bodies 25 must be adapted to the size of the opening 9 defined by the frame 12. Consideration must also be given to those parts of the steel frame which are located inside the concrete shell, e.g. diagonal rods 11 and plastic tubes 20 and rods 22. The casings 26 must thus be so designed that they can be moved inside the concrete shell after they have been inserted through the opening 9 defined by the frame 12.

When a suitable number of casings 26 have been inserted into the internal space of the concrete shell, the hatch 16 is fixedly mounted in the frame 12, this attachment may conveniently be made by means of bolts.

An extremely important feature of the present invention is that the opening 9, makes it possible to inspect and possibly replace of the float bodies 25 in the form of sealed plastic containers.

POSSIBLE MODIFICATIONS OF THE INVENTION

In the above-described embodiment, only one hatch 16 is used to close the opening 9. However, within the scope of the present invention, it is very well possible that, instead, several hatches are used to close the opening 9. A plurality of hatches will make each individual hatch easier to handle. With respect to the float bodies 25, which are preferably presented in the form of jerricans, these may be made foldable. This would make it easier to mount them inside the concrete shell.