[0001] A watercraft is usually moored to a wharf or a pier by fastening said watercraft
both to suitable mooring bitts and to at least one submerged or underwater member,
consisting of either an anchor or, often, a displaceable branch of a cable, chain
or any other suitable means which is anchored to the bottom of the mooring area. When
a craft arrives at the mooring area, said branch of the submerged chain must be picked
up and raised by means of an anchor or a harpoon to fasten the mooring cable or cables
thereto. This operation is somewhat difficult and time-consuming and, above all, it
fouls the craft and the operator's hands disgustingly due to organic and inorganic
sediments adhering to the submerged mooring chain.
[0002] The invention aims to overcome this disadvantage by virtue of the following solution.
Fastened to the branch of the submerged mooring chain is any suitable means the specific
gravity of which can be modified at a distance, e.g. an inflatable and deflatable
buoy. Said buoy is connected by a flexible hose to an inflating/deflating power pack
arranged at the mooring means in each mooring area ashore. By activating said power
pack, e.g. by a remote-control device, air can be admitted into the buoy so that it
will be inflated and will rise to quickly carry the submerged mooring point up to
the surface whereby one can moor thereto quickly, easily and with no fouling. On the
contrary, when said buoy is deflated, it will be drawn to the bottom by the mooring
chain which resumes its rest condition.
[0003] Further characteristics of the invention, and the advantages resulting therefrom,
will appear from the following description of some preferred embodiments thereof,
shown by way of non-limiting examples only, in the Figures of the accompanying two
sheets of drawings, in which:
Figure 1 is a side view of the device of the invention;
Figure 2 is a block diagram of the power pack for the control of the buoy for raising
and lowering the submerged mooring chain;
Figure 3 shows diagrammatically a simplified modification of the power pack for the
control of the buoy.
[0004] In Figure 1, letter B indicates a stationary bitt secured to the edge of a pier or
wharf and which identifies a mooring area. Said area comprises at least one submerged
chain C, or a cable, a rope or any other suitable means, provided with at least one
displaceable branch C1 which constitutes the submerged mooring means. according to
the invention, the free end of said branch C1 of the chain has connected thereto an
inflatable and deflatable buoy 1 provided with a sturdy bracket 2 provided with rings
3-103 at the ends thereof, one of said rings being connected to said branch C1. The
bracket 2 is surrounded by an air bladder of flexible material 101 which constitutes
the buoy, which is preferably of toric shape and is vulcanized or anyway fixed suitably
to said bracket. The bracket 2 and buoy 1 are associated so that when the buoy is
inflated and floating, the ring 3 of the bracket is directed upwards.
[0005] Unlike the illustrated embodiment, the buoy may have the configuration of a wheel
with a tire, i.e. a central rim which mounts at the periphery thereof an inflatable
and deflatable tube held firmly on said rim in any suitable manner, either fixedly
or removably. The bracket 2 will be either secured to or integral with said rim, and
the whole can be easily conceived and carried out by those skilled in the art.
[0006] The air bladder 101 is provided with at least one inflation and deflation point 4
arranged anyway either on said component or on the bracket 2, which may be provided
with an internal duct communicating with the interior of said bladder. Said point
4 is connected to at least one hose 5 made of any suitable flexible material resisting
to chemical-physical strains, one part of which is as long as the chain branch C1,
another part of which is held on the bottom of the mooring area by suitable ballast
members 6, and another part of which rises up the side of the wharf or pier so that
its opposite end may be connected to a power pack 7 arranged at the bitt B.
[0007] According to a simplified embodiment, shown in Figure 3, the power pack 7 may comprise
a non-return valve 8 vith a manual release 108, a maximum pressure valve 9 which controls
the inflation pressure for the buoy, and a union 10 for quick and releasable connection
with the delivery of a source of compressed air, e.g. a small electrically-driven,
compressor mounted on a carriage, or a bottle of compressed gas, or other pneumatic
accumulator, which may be provided on board the craft or may be available ashore to
be used in turn by the various users of the mooving area.
[0008] When the buoy 1 is deflacted, it rests on the bottom of the mooring area, together
with the branch C1 of the submerged chain C and hose 5, as shown with broken lines
in Figure 1.
[0009] When a craft is being moored and is fastened to a bitt B, pressurized air is delivered
through the union 10 to the buoy 1, which progressively rises afloat, lifting the
terminal C1 therewith. During this step, the safety valve 9 prevents the buoy from
being inflated excessively and anomalously. When the buoy emerges out of the water,
the ring 3 can be used as an additional point for anchoring the craft.
[0010] Conversely, when the craft is to be unmoored, the pushbutton 108 of the stop valve
8 is acted upon to open said valve and deflate the buoy, which progressively will
be sunk together with the terminal C1 to the rest position shown with broken lines
in Figure 1.
[0011] The power pack 7 may be constructed so as to further simplify the mooring operation,
as described herinafter with reference to Figures 1 and 2. A suitable container 11,
secured to the ground at the spot intended for connection to the hose 5, made of stainless
steel and/or other suitable material and provided with at least one access door which
is locked by a safety lock or a padlock, accommodates the following components:
- a small electrically-driven compressor 12;
- at least one electrical accumulator 13;
- a control logic 14 which may comprise, if desired, a remote-control device with an
antenna 15 arranged outside of said container 11;
- a four-way offtake 16, the first way being connected to the delivery side of the electrically-driven
compressor 12 via a normally-closed solenoid valve 17; the second way communicating
with the atmosphere via a normally-closed solenoid valve 18; the third way being connected
to the control unit 14; the fourth way being connected to the hose 5.
[0012] The control unit 14 may have connected thereto a flash signaling lamp 20 arranged
within a suitable housing outside of the container 11.
[0013] The power pack constructed as above operates as follows: when the unit 14 receives
an activating signal, for example, a radio control signal received by the antenna
15, the compressor 12 is activated and the valve 17 is opened so that pressurized
air may get into the buoy. The pressure-switch 19 automatically stops the compressor
12 and closes the solenoid valve 17 when the buoy is inflated at the pressure required
for flotation. Conversely, when the unit 14 receives a disactivating signal, it causes
the solenoid valve 18 to be opened in timed manner to permit the deflaction of the
buoy.
[0014] It is to be understood that instead of the accumulator 13 or in addition thereto,
current may be supplied from the electrical mains.
[0015] Finally, it is to be understood that the above description is referred to preferred
embodiments of the invention, which may undergo many changes and modifications, especially
of constructional nature. For instance, in order to hasten the deflation of the buoy,
the air therein can be sucked by the compressor 12, the latter being suitably pre-conditioned
for this purpose. Instead of the compressor 12, there may be provided a small, refillable
gas-accumulator provided with a pressure gauge.
1. A device for mooring a watercraft in a rapid and simplified manner to a wharf or pier
provided at each mooring area with at least one movable branch (C1) of a chain (C)
or other stationary means on the bottom of said area, characterized in that it comprises
at least one inflatable and deflatable buoy (1) - connected to said branch (C1) -
said buoy being connected via at least one small flexible hose (5) to a power pack
(7) arranged one the edge of the wharf or pier at the mooring area and comprising
suitable means for modifying the condition of said buoy so that when deflated the
buoy will rest on the bottom of the harbor together with the mooring branch (C1),
and when inflated said buoy will rise to the surface and carry the mooring branch
therewith so that the craft can be moored thereto in a rapid and simplified manner
and without any fouling.
2. A device according to claim 1, characterized in that said buoy (1) is provided with
a bracket (2) which is surrounded by an air bladder (101) constituting the inflatable
and deflatable part of said buoy and which is provided with free end rings (3-103)
one of which is connected to the movable branch (C1) of the submerged mooring chain,
whereas the other ring is free for anchoring the craft thereto when the buoy is inflated
and emerged.
3. A device according to claim 1, characterized in that said flexible hose 5 which serves
to inflate and deflate the buoy (1) can be connected to the air bladder (101) of said
buoy either directly at a strengthened and suitably arranged point (4) on said bladder,
or indirectly through the anchoring member (2) carrying said bladder and communicating
therewith via suitable channels and/or ducts.
4. A device according to claim 1, characterized in that a part of the flexible hose (5)
for inflating and deflating the buoy (1) is held fast on the bottom of the mooring
area by means of ballast members (6) or other suitable means, and the part thereof
that rises up to the edge of the wharf or pier is secured to the embankment thereof
of one or more spots by any suitable means.
5. A device according to claim 1, characterized in that the power pack (7) having connected
thereto the ashore end portion of the flexible hose for inflating and deflating the
buoy (1) comprises: a non-return valve (8) with manual release control (108); a maximum
pressure safety valve (9) adjusted at such a value to maintain the inflation pressure
in the buoy at a pre-established value; a union (10) for quick, releasable and simplified
connection to any suitable source of pressure pressurized air available either at
the mooring area or on the craft.
6. A device according to claim 1, characterized in that the power pack (7) having connected
thereto the ashore end of the flexible hose for inflating and deflating the buoy (1)
comprises a container (11) arranged at the mooring area and accommodating therein:
- a small electrically-driven compressor (12);
- at least one electrical accumulator (13) for feeding the electrically-driven compressor
and other electrical components;
- an electronic control logic (14) which can be activated by means of either manual
control means and/or remote control means, through a remote-control comprising a suitable
radio receiving antenna (15) outside of said container;
- a visual alarm (20) arranged outside of said container, for signalling the activation
of the device;
- a group of solenoid valves (17-18) to control the connection of the flexible hose
associated with the buoy to the inflation compressor or to the atmosphere for deflation;
- pressure switch (19) for the control of the compressor during the buoy inflation
step.
7. A device according to claim 6, characterized in that it comprises, instead of the
electrically-driven compressor, a small, refillable accumulator of pressurized gas.