DE8710080U1 - Diving equipment - Google Patents

Description

DESCRIPTION

The innovation concerns a diving device with an air supply line that is connected on the one hand to the atmosphere above the water level and on the other hand to the mouth of the device user.

Such diving equipment is widely used in the form of a snorkel. The advantage of snorkeling is its simplicity, low price, light weight of the equipment and the relative harmlessness of snorkeling. The disadvantage of snorkeling is the short diving time of around one minute due to holding your breath.

Compressed air diving, which is much more demanding, is known as a much more complex alternative to snorkeling. The advantage of compressed air diving over snorkeling is the possibility of free, independent swimming diving to depths of over 50 meters. The disadvantage of compressed air diving is the limited diving time of about half an hour to two hours depending on the depth and device. Compressed air devices are mechanically relatively complicated, heavy and require a lot of maintenance and care. The high pressure in the bottle of about 200 to 300 bar represents a constant danger. The compressed air bottles must therefore be checked for rust at regular intervals.

In general, compressed air diving requires not only good training of the diver but also a lot of organization and equipment, as the diver is constantly dependent on compressors or filling stations.

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I 1 Diving to depths of more than 10 meters creates a number of physiological dangers, such as caisson disease, &rgr; decompression sickness and oxygen poisoning. Therefore, in pure recreational diving, the 10-meter range is of particular importance.

I 5 importance, not least because of the prevailing, I mostly good lighting conditions there.

The innovation is therefore based on the task of creating a simply constructed, flexible and easily transportable

k 10 bar diving equipment, which can be used in depths up to

I 10 meters and no limitation of diving time

I brings with it.

5 This task is essentially solved by

il5 a muscle-powered air pump is provided for supplying air from the atmosphere through the air supply line \ to the mouth of the user of the device, that a

I the actuating device for actuating the air pump is connectable to one or more of the limbs of the device user or can be grasped by them, and that an air outlet for the exhaled air is provided which can be closed by means of an exhalation valve

i , which is located behind the air pump in the flow direction of the air supplied by the air pump.

In a preferred embodiment of the innovation, the air pump can be attached to the body of the device user by means of a carrying strap or the like and is pulled by means of traction devices such as belts or the like, which are suitably connected to the

on the part of the device user.

The new device is therefore in principle a muscle-powered pump with which the diver himself, coupled with swimming movements, brings air through a hose 3g underwater and puts it under the pressure necessary for breathing.

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The upper end of the tube leading upwards into the atmosphere is in preferred development of the innovation
attached to a floating body such as in particular an inflatable buoy, which is preferably designed as a diving signal buoy and keeps the end of the hose above the water surface.

In a particularly preferred manner, the air pump comprises a rigid outer body, the closed upper side of which is provided with

^q is connected to the air lines leading to the water surface on the one hand and to the mouth of the device user on the other hand, and whose open underside is closed by means of a flexible, bellows- or sack-like part which, in the event of external excess pressure, is pressed into the interior of the outer body, reducing the pump volume, and is dimensioned such that it can essentially completely fill the interior of the outer body, the actuating device acting on this flexible part.

Alternatively, the air pump can be designed as a cross-sectional

A dimensionally stable bellows must be designed, the top of which is connected to the air lines and the underside of which is connected to the actuating device.

Furthermore, the air pump can also conveniently

Cylinder and a piston guided in the cylinder, the closed top of the cylinder being connected to the air lines, the bottom of the OQ cylinder being open and the actuating device engaging the piston.

If the diving device is now brought under water, then in the case of the first-mentioned design of the air pump, the bellows, at the end of which are two straps, which carry foot straps at their ends, are pushed by the pressure of the water into

the rigid outer body is pressed into it and the air there is placed under the respective ambient pressure. The air can be inhaled via the intake tube that opens into the closed end of the rigid outer body:

A valve at the inlet of the exhaust hose prevents the air from flowing back to the water surface. The inhaled air is breathed back into the inhalation hose, while another valve prevents the exhaled air from flowing back into the pump volume. The exhaled air finally reaches the water via the exhaust valve.

While the air is exhaled, fresh air is sucked into the pump volume via the hose leading to the water surface by pulling the bellows out of the container-like, rigid, outer body, which is again pressurized when the bellows is released and can be inhaled.

The air pump is preferably worn in front of the chest, which has the advantage that the pump volume is lower than the lung center when the diver is in an upright, horizontal or slightly head-down swimming position, which creates a slight overpressure in the pump volume compared to the lung volume, which is felt to be pleasant, especially during physical exertion and when breathing.

After the air pump is activated by the fact that

QQ breathing the legs are stretched and thereby the pump volume is filled with fresh air and when breathing in the legs are pulled in so that the fresh air in the pump volume can be inhaled, the breathing-movement cycle of the diving device according to the invention corresponds

gc that of breaststroke. The rhythm of movement of the legs required to operate the diving equipment is

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12
therefore particularly easy to learn for breaststroke swimmers.

The new diving equipment is usually put on on land. After getting into the footrests, the diver can move freely, walk normally and jump or enter the water legs first without any noticeable hindrance.

With correct ballast buoyancy, you can cause or support the descent and ascent by skillfully coordinating the pump and breathing action, since the buoyancy of the diving equipment depends on the amount of air in the pump volume. If the legs are not fully stretched out, so that the pump volume is not completely filled with air, the diver sinks downwards. If, on the other hand, the legs are fully stretched out and the pump volume is completely filled with fresh air, the buoyancy of the air pump increases and the diver ascends.

Since the maximum pumping volume of the pump is adjusted to a maximum diving depth of about 10 meters in such a way that the fresh air available in the pumping volume is fully used up during one breathing cycle, since the pumping volume of the air pump is preferably about 6 liters, the method described above for influencing the descent or ascent becomes less important at greater diving depths, since at these greater depths the entire stroke range of the air pump is required to suck in sufficient air.

In order not to have to rely on always stretching the legs to a certain angle or always stretching them as far as possible when balancing, a preferred further development of the innovation provides that the length of the foot straps carrying the foot loops can be adjusted, in particular via a quick-release fastener.

In this way, the diver can individually adjust the length of the belt depending on whether he wants to remain at the same diving depth or to ascend or descend, so that he has the option of fully stretching his legs during each activation cycle. Depending on the adjustment of the length of the belt, in this stretched-out state of the diver's legs the bellows or, more generally, the moving element of the pump does not have to be in the fully extended state, which means that the maximum pump volume IQ can be controlled depending on the length of the belt.

In a preferred development of the innovation, the output side of the air pump is connected via a check valve to an additional flexible air reservoir, which in turn is connected via a hose to the mouth of the device user. This air reservoir can preferably be attached to the body of the device user, for example by means of belts or the like. Due to its buffer effect, such an air reservoir creates independence between the diver's leg movements and his breathing activity, which can further simplify the use of the device according to the innovation. Such an additional air reservoir can be advantageous in particular at lower diving depths, where the additional buoyancy of the air reservoir does not yet have such a strong effect.

In the above it was assumed that the air pump can be operated by the diver's leg movements. Alternatively, however, it can also be provided that the air pump is operated by the diver's arms. For this purpose, the belt or rope connected to the moving part of the air pump is connected at its end to a suitable handle, in the simplest case in particular a rod that can be gripped with both hands on both sides. While in the case of foot operation

In the case of the device being activated, the diver's hands are free to either perform swimming movements or to take photographs, collect data or the like, and in the case of the device being activated, the diver's feet are free to perform, in particular, the usual fin swimming movements.

In an alternative embodiment of the innovation, it is further provided that the actuating device for operating the air pump comprises at least one foot strap or the~

&tgr;&eegr; the same as well as having at least one additional handle. The air pump can then be operated either by hand or by leg movement as required. Furthermore, the leg movement can be supported by additional, synchronous arm movement if required, especially at greater depths.

While it was assumed above that the air pump is attached to the diver's body, an alternative version of the innovation provides that the air pump is attached to a floating body such as a diving buoy and is connected to the diver's mouth via a hose, in particular with the interposition of an additional air reservoir*

In this case, the air pump is preferably formed by a cylindrical body closed on all sides, in which a piston dividing the cylindrical body into an upper and a lower chamber volume is mounted so as to be displaceable in the axial direction, whereby Jas upper chamber volume

oQ is connected to the air line leading to the atmosphere via a non-return valve, the lower chamber volume is connected to the air line leading to the mouth of the device user via a non-return valve, the piston has an opening closed by a non-return valve,

ge which connects the upper and lower chamber volumes, a spring arrangement is provided which

Piston is pre-tensioned in the direction of the upper chamber volume, and the actuating device acts on the piston and counteracts the force of the spring arrangement. The actuating device can in this case be expediently formed by a Bowden cable.

From the above explanations it can be seen that the diving device according to the design is extremely compact and fits, for example, into a medium-sized sports bag. The outer, rigid, container-shaped body of the pump can be used as a container for accessories such as a mask, camera, knife, etc. when the bellows are turned inwards.

In addition to being used purely as a sports and hobby diving device, the new diving device can also be used as boat or yacht accessory, for example to carry out repairs or cleaning on underwater vessels (e.g. replacing ship's propellers) or to search for lost objects in shallow harbor basins. Possible areas of application are wherever underwater activities in shallow water are required from time to time, but purchasing and maintaining a compressed air device is not worthwhile. The new diving device could also be of interest as a supplementary device for compressed air divers in order to save compressed air under certain conditions.

Due to the simplicity of the design, the new diving device can be manufactured extremely cost-effectively, so that it can be offered for a fraction of the price of the usual basic compressed air equipment.

In summary, it can be stated that the new

Diving device is extremely simple and reliable

working diving vessel, which can operate at depths of up to

to about iÖ MeEeffl is öiflifiable. The new

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The diving device can be used very flexibly, independent of filling stations and diving bases, and does not impose any restrictions on diving time. Due to its compact size and low weight, it can also be transported on foot, by bike or similar over long distances. The new diving device is technically undemanding, requires hardly any maintenance and care, and is extremely inexpensive considering its possible uses.

Further advantageous features of the innovation emerge from the remaining subclaims and from the following description, in which several preferred embodiments of the innovation are explained in more detail using the drawing. The drawing shows in a semi-schematic representation:

Fig. 1 shows a first embodiment of a diving device according to the invention in operation, in front view and side view,

Fig· 2 the diving device according to Fig. 1 in a partially sectioned side view,

Fig. 3 the detail A according to Fig. 2,

Fig. 4 the upper part of the pump of the diving device according to

Fig. 2, &rgr;

Fig. 5 a section through an alternative embodiment | of a pump of a diving device according to the invention,

Fig. 6 shows another embodiment of a diving device according to the invention in operation, in side view and in front view,

Fig. 7 another embodiment of a floating diving device in operation, in side view and in front view,

Fig. 8 shows another embodiment of a diving device according to the innovation in operation, with the pump located above the water surface, in side view and in rear view,

Fig. 9 shows another embodiment of a diving device according to the invention in operation, in side view and in rear view,

Fig. 10 shows another embodiment of a hand-operated diving device according to the invention in operation, in side view and in front view,

Fig. 11 a front view of another embodiment of a diving device according to the invention in operation, with leg operation and additional hand operation,

Fig. 12 a top view of the handle of the diving device according to Fig. 11,

Fig. 13 is a side view of the handle according to Fig. 11,

Fig. 14 two side views of the diving device according to Fig. 11, with the user’s legs bent and stretched,

Fig. 15 shows a further embodiment of the valve unit of a diving device according to the innovation.

In the following description, identical reference symbols in different embodiments designate identical or corresponding parts.

First, reference is made to the embodiment shown in Fig* I to 4«

18

The diving device comprises a pump, designated as a whole by reference number 10, an actuating device for the pump 10, designated as a whole by reference number 12, and flexible hoses 14 and 16. The flexible pressure hose 14 is connected on the one hand to the pump 10 and on the other hand to the air above the water level. The upper end of the hose 14 is held in an inflatable buoy 20, which is designed in particular as a diving signal buoy to warn approaching boats.

and mark the diving spot. Buoy 20 can be used at 10

incidents in the manner of a lifebuoy, for which purpose loops and the like (not shown in detail) may be attached to the buoy 20. Furthermore, additional fastening means may be provided on the buoy 20 in order to secure the pump 10 when not in use or in the event of

The diver can be hooked onto this when changing divers, which avoids the diver having to climb into the boat with the equipment. In addition, the diving equipment is buoyant when the bellows are pulled out and secured.

^O The length of the hose 14 limits the maximum diving depth. Markings provided on the hose can serve as a simple depth gauge. The hose 14 can also be used as a signal line, as a "3uddyline" (connecting the buoys of two divers together in order to

^° not to lose contact with each other) or for control (breathing noise audible on the surface).

The hose 16 leads from the pump 10 to a mouthpiece 18, which the diver holds in his mouth when using the diving equipment.

Furthermore, detachable hose connections 22, 24 are provided near the buoy 20 and near the pump 10 in order to enable the hose section in between to be exchanged in order to adapt it to the hose length required in each case. Additional weights ¹ are also provided on the buoy 20 or on the hose in order to stabilize the buoy in the correct position.

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As is particularly clear from Fig. 4, the end of the hose 14 closest to the pump is pushed onto a nozzle 26, which is formed on a screw ring 28, which is screwed onto an outwardly projecting screw nozzle 32 formed on the top of the pump housing 30. A cylindrical support element 34 is held between the outer edge of the screw nozzle 32 and the screw ring 28, which has an inwardly projecting annular surface 36 on its inside facing the pump, on which a sealing ring 42 is supported. The other end of the compression spring 38 is connected to a disk-shaped sealing element 40, which, due to the force of the compression spring 38, is pressed in a sealing manner against an annular sealing surface 42 running along the inner end of the nozzle 26. The check valve 44 formed by the arrangement described above is thus regularly closed, but opens as soon as the pressure in the hose 14 exceeds the pressure in the pump volume 46 of the pump 10 by a certain amount.

The end of the hose 16 opposite the mouthpiece 18 is pushed onto a nozzle 48 which is formed on a screw ring 50. The screw ring 50 is screwed onto an intermediate piece 52 which in turn is screwed onto another screw nozzle 54 formed on the top of the pump housing 30 and protruding outwards. The intermediate piece 52 together with the screw ring 50 forms a cylindrical chamber 56 which has two opposing annular surfaces 58, 60 extending in the radial direction. A disk-shaped sealing element 62 rests against the annular surface 60 facing the pump and is pre-tensioned into its sealing position by means of a compression spring 64. The compression spring 64 is supported on the one hand on the sealing element 62 and on the other hand on the annular surface 58. The

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The check valve 66 formed in the arrangement is thus regularly closed, but opens as soon as the pressure prevailing in the pump volume 46 exceeds the pressure present in the hose 16 by a certain amount*

The intermediate piece 52 further defines on its outside an annular surface opposite the annular surface 60, with several through holes 68 connecting the chamber 56 to the outside environment. A sealing ring 70 lies sealingly against this outer groove surface and closes the holes 68. The sealing ring 70 is pre-tensioned into its sealing position under a certain pressure by means of a compression spring 72, which is stretched between the outer surface of the sealing ring 70 and the opposite wall of the pump housing 30. When the device user exhales, the sealing ring 70 lifts off its seat so that the exhaled air can pass through the holes 68 into the water. The arrangement described above thus represents an exhalation valve 74.

It should be mentioned that the exhalation valve 74 is implemented in a slightly different way in the case of the illustration according to Fig. 1. * There, a branch is provided in the hose 16, which can be closed by means of an exhalation valve designed as a check valve 74.

Two shoulder straps 77, 78 are attached to the pump housing 30, which are designed so that the pump 10 is worn by the diver on the chest. If necessary, a waist belt (not shown in detail) can also be used.

The open edge of a bag-like bellows 76 is attached to the lower edge of the pump housing 30 of the pump 10. The bag-like bellows 76 can be made of a suitable rubber material, for example, reinforced with a fabric, or

consist of a rubberized fabric. The material must be airtight, watertight, flexible and sufficiently strong. The size and dimensions of the sack-like bellows 76 correspond essentially to the size of the pump housing _30. In particular, it can be clearly seen from Fig. 3 that the sack-like bellows 76 is attached to the lower edge of the pump housing 30 by folding the lower edge 79 outwards around the lower edge 80 of the pump housing 30 and pushing a clamping ring 82 onto the lower edge 80 of the pump housing 30 from below in such a way that the bellows 76 is securely clamped between the clamping ring 82 and the pump housing 30.

A buckle 84 is attached to the inner upper end of the sack-like bellows 76, in particular one that is adjustable in length, and on which a belt 86 is worn. The belt 86 is formed into foot loops 90 at both ends via brackets 88 and the length of each of the buckles 92 is adjustable. As a rule, the length of the belt arrangement is adjusted so that when the diver is standing upright, the sack-like bellows 76 is practically completely pulled out of the pump housing 30. However, the belt arrangement is long enough to be able to adjust it so that when the diver is standing upright, the bellows 76 is only partially pulled out of the pump housing 30. In particular, in the area above the buckle 84, a quick-release fastener of a known type (not shown in detail) can be provided, which enables the belt length to be changed quickly and reliably with one hand.

During operation, the water pressure causes the bag-like bellows 76 to be pushed almost completely into the pump housing 30 when the diver's legs are bent. When the diver now stretches his legs, the bellows 76 is pulled out of the pump housing 30, whereby the air in the area defined by the pump housing 30 and the bellows 76

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A vacuum is created between the pump volume 46, which causes fresh air to be sucked into the pump volume through the hose 14 by opening the non-return valve 44. As soon as the diver then bends his knees again, he can breathe in the fresh air that has been sucked in through the hose 16 by opening the non-return valve 66, while at the same time reducing the pump volume. Exhalation occurs approximately when the legs are stretched, with the exhaled air being sucked out into the water via the exhalation valve 74.

'f If water gets into the inhalation tube, it can easily be blown out again through the exhalation valve 74.

If water enters the pump volume during diving,

H 15, the diver pulls his legs up fully so that the bellows 76 rests against the inner wall of the pump housing 30 and all water that has penetrated passes through the check valve 74 into the breathing hose 16. From here, the

j§ Water is blown out again in the manner described above

3 20 will be.

\ The pump housing can be made of any suitable material, preferably

^ preferably made of plastic.

I The required I 25 lead ballast can be fitted at a suitable location on the pump housing. Alternatively,

I the lead ballast is replaced by rigid or flexible containers

I, which can be attached to both sides of the pump housing

I and on site with js^ignetein ballast such as stones, gravel,

I can be filled with pebbles, sand or similar.

1 30

"' Fig. 5 shows an alternative embodiment of the pump

10. In the rigid, cylindrical pump housing 30, which is closed at the top and open at the bottom, a piston 94 is mounted in the axial direction, for example via guide grooves 96.

; 35, which is in sealing contact with the inside of the pump housing 30. A foot strap

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1 or foot brackets 90 is attached to the lower edge of the pump housing 30 and is guided downwards via a deflection roller 100 which is attached centrally to the underside of the piston 94.

In the case of the embodiment according to Fig. 6, the pump 10 consists of a bellows 102 which is dimensionally stable in cross-section, which is closed on all sides and has connections for the hoses IA and 16 at its upper end, which correspond to those according to Fig. 4. The bellows 102 has an opening 104 at its lower end, in which the belt arrangement 86 carrying the foot stirrups 90 engages.

Furthermore, in the case of the embodiment according to Fig. 6, the lower ends of the shoulder straps 77, 78 are each provided with a thigh strap 103, 105 and accordingly are not attached to the pump 10.

In the case of the embodiment according to Fig. 7, the pump 10 comprises a cylindrical housing 30 which is closed on all sides and which is connected at its upper end to the hose 14 via a non-return valve (not shown) and which is connected at its lower end via another non-return valve to a hose 106 which opens into a hose-shaped air reservoir 108. The breathing hose 16 branches off from the hose-shaped air reservoir 108 via a non-return valve. The air reservoir 108 is placed over the diver's shoulders and neck and the two ends of a belt 110 which is passed over the diver's back under the diver's armpits are connected to the ends of the hose-shaped air reservoir 108. In this embodiment, the pump 10 is carried on the diver's back, with suitable shoulder straps being provided which can be connected to the belt 110.

A piston 102 that can move in the axial direction is arranged within the closed pump housing 30 and divides the space enclosed by the pump housing 30 into an upper chamber 114 and a lower chamber 116. A check valve 118 is formed in the piston 102 and opens as soon as the pressure in the upper chamber 114 exceeds the pressure in the lower chamber 116 by a certain amount. A compression spring 120 is arranged in the lower chamber 116 and tends to push the piston 112 upwards. A pull rope 122 is attached at one end to the lower edge area of the lower chamber 116 and is guided over a deflection roller 124 that is attached centrally to the underside of the piston 112. A flexible pipe socket 126 is attached to the underside of the pump housing 30 and extends approximately to below the diver's buttocks. The traction cable 122 coming from the deflection roller 124 is guided in this pipe socket 126 and a sealing device (not shown in detail) is provided in the pipe socket 126 in order to seal the pipe socket and thus the lower chamber 116 from the outside environment. The end of the traction cable 122 is in turn connected to the two foot brackets 90.

In the embodiment according to Fig. 8, the pump 10 is held above the water surface by means of an inflatable float 128. The structure of the pump 10 shown in Fig. 8 corresponds to the structure of the pump shown in Fig. 7. The pump 10 is operated via a Bowden cable 130. The hose 106 connects the outlet of the pump 10 to the air reservoir 108. The embodiments according to Fig. 7 and Fig. 8 therefore differ essentially only in that the pump in the case of Fig. 8 is arranged above the water surface, while in the case of Fig. 7 it is carried by the diver.

1 In the case of the embodiment according to Fig. 9, the pump worn on the back by the diver is designed as a rotary pump 132 in the form of a centrifugal pump, wherein the pull rope 134 actuating the rotary pump 132 is guided over 5 pulleys 136 arranged on the foot straps 90 and is fixed at its end to the attachment point 138 on the front of the chest strap 140. This distributes the force to be applied by the diver particularly evenly.
10

Fig. 10 shows an embodiment of a diving device according to the invention which, in contrast to the embodiments described above, can be operated by hand. The structure of the device corresponds essentially to that according to Fig. 1, but instead of the belt arrangement 86 with foot straps 90, a short, length-adjustable belt 142 is provided, to the lower end of which a gripping rod 144 is attached in the middle. The length of the belt 42 is preferably set so that when the bellows 76 is completely pressed into the interior of the pump housing, the gripping rod 144 rests on the lower edge of the pump housing 30. The pump housing is dimensioned such that when the diver's arms are fully extended, the bellows 76 is completely pulled out of the pump housing, as shown in the side view of Fig. 10. In the case of the embodiment shown, the height of the pump housing can be 23 cm and the maximum stroke about 50 cm.

Fig. 11 shows a diving device similar to Fig. 1, but additionally equipped with a gripping rod similar to Fig. 10
The gripping rod 146 shown in Fig. 12 and 13 in top view and side view is a steel tube with a centrally mounted roller 148, which

3g Housing part 150 of the gripping rod 146 is partially surrounded in such a way that a rope 152 guided around the roller 148 cannot be pulled off the

Roller 148 can slide down. This rope 152 is, as can be seen in the illustration according to Fig. 14, attached at one end to the upper attachment point 154 of the foot strap arrangement 86 and at the other end to an attachment point 156 on the lower edge of the pump housing 30. The length of the rope 152 corresponds approximately to the length of the pump housing 30. If necessary, the handle bar 146 can be grasped by the user and operated by hand to support the foot movement. Alternatively, the pump can also be operated exclusively by hand. The rope 152 together with the handle bar 146 can be detachably attached to the attachment point 154, for example, can be latched in, and means can be provided on the pump housing 30 to attach the handle bar 146 to it when not in use.

Fig. 11 and 14 also show belt buckles 158 for quickly adjusting the length of the belt assembly 86 to suit the size of the respective user and the desired or required buoyancy.

Fig. 15 shows a preferred valve arrangement as an alternative to the valve arrangement shown in Fig. 4. In this arrangement, all valves are housed in a common valve housing 160. The valve housing 160 comprises two axial, opposite hose connectors 162, 164 onto which the hoses 14 and 16 can be pushed. A chamber 166 is defined between the two hose connectors 162, 164, from which a pipe connector 168 branches off at a right angle to the axis of the hose connectors 162, 164. The pipe connector 168 can be fastened to a screw connector 172 projecting upwards on the top of the pump housing 30 by means of a union nut 170.

A shaft 200 extending coaxially to the valve housing 160 is formed on the valve 176 and has an axial blind bore 202 in which the shaft 204

The comb 166 connecting the hose connectors 162 and 164 is cylindrical and coaxial with the hose connectors and has a larger diameter than the hose connectors. This creates a radial annular surface 174 at the end of the hose connector 162 facing the chamber 166, which serves as a sealing surface and interacts with a disk-shaped valve 176 which is pressed into the sealing position by means of a compression spring 178. The spring 178 is supported on the one hand on the valve 176 and on the other hand on a flange 180 formed in the housing.

A further ring flange 182 formed in the valve housing 160 defines an annular surface 184 on its side facing the hose 16, which serves as a sealing surface for a disk-shaped valve 186, which is held in the sealing position by means of a compression spring 188. The compression spring 188 is supported on the one hand on the valve 186 and on the other hand on the annular surface 190 formed on the housing-side end of the hose connector 164.

Several through holes 192 are formed in the ring surface 190, which connect the inside of the valve housing 160 with the outside. A sealing ring 194 is arranged coaxially to the hose connector 164 and is located on the outside

against the holes 192. A compression spring 196 is pushed onto the hose connector 164 and is supported on the one hand on the sealing ring 174 and on the other hand on an annular disk 198 spaced apart from this and supported against the end of the hose 16, so that the exhalation valve formed by the sealing ring 194 normally remains closed.

of an expanded valve body 206. The shaft 204 of the valve body 206 extends through a central bore in the valve 108, which opens in the direction of the hose connector 164. The conical sealing surface of the valve body 106 collides with a correspondingly shaped sealing surface of the valve 136. The length of the shaft 204 of the valve body 206 is designed in such a way that when the valve 176 and the valve 186 are closed, the valve body 206 rests sealingly against the valve 186. However, as soon as the valve 176 lifts off its sealing surface 174, the valve body 106 is simultaneously lifted from its sealing position and exhaled air can flow through the central bore 208 in the valve 186 into the pump volume 46, which allows fresh air to be drawn in through the

i_5 Hose 14 is supported in the pump volume 46.

\ 10 RELATION pump &bull;t IiIi ·I »441 ti 4444 j " i 12 Actuating device Il 114 114 *>
t 1 · · · 4 ii 14 i1 I 14 Hose &bull;&bull;III) ) · · 114
29 5 i 16 Hose SIGNAGE ! 10 18 Mouthpiece 72 compression spring 20 buoy 74 Exhalation valve 22 Hose connection 76 Bellows 24 Hose connection 77 Shoulder strap 26 Support 78 Shoulder strap I15 28 Screw ring 79 lower edge of 76 30 Pump housing 80 lower edge of 30 32 Screw socket 82 clamping ring 34 Support element 84 Buckle 36 Ring area 86 Belt i20 38 Compression spring 88 brackets .40 Sealing element 90 foot loops 42 Sealing surface 92 buckles 44 check valve 94 pistons 46 Pumpvo] 'imen 96 guide grooves 1 25 48 Support 98 traction rope SO Screw ring 100 pulley 52 Intermediate piece 102 Bellows 54 Screw socket 103 Thigh strap 56 chamber 104 Opening 30 58 Ring area 105 Thigh strap 60 Ring area 106 Hose 62 D'ichtelement 108 Air reservoir 64 Compression spring 110 Belt 66 check valve 112 pistons I35 68 Drilling 114 upper chamber 70 Sealing ring 116 lower chamber 118 Check valve 120 compression spring 122 traction rope 124 pulley

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126 pipe sockets

128 Swimming Koipef

130 Bowden cable 132 Rotary pump 134 Pull rope

136 pulleys

13-S attachment point

140 Chest strap 142 Belt
144 Grab bar

146 Grab bar

148 roll

150 Housing part of

152 Rope
&Idigr;5 154 Attachment point

156 Attachment point

158 belt buckles

160 Valve housing 162 Hose connector 164 Hose connector

166 Chamber

168 pipe sockets

170 Union nut 172 Screw socket 174 Ring surface

176 Valve

178 Spring

180 Flange 182 Flange 184 Ring surface

186 Valve

188 compression spring

190 Ring surface 192 Holes 194 Sealing ring

196 compression spring 198 washer 200 shaft!

202 Blind hole 204 Shaft 2Ö6 Valve body 208 Bore

Claims (1)

EXPECTATIONS Diving device with an air supply line which is connected on the one hand to the atmosphere above the water level and on the other hand to the mouth of the device user, characterized by an air pump (10) which can be operated by muscle power for supplying air from the atmosphere through the air supply line (14, 16) to the mouth of the device user, an actuating device (84, 90; 142, 144) connected to the air pump (10) for actuating the air pump ( ₁₀ ) which can be connected to or grasped by one or more of the limbs of the device user, and an air outlet for the exhaled air which is located behind the air pump (10) as seen in the flow direction of the air supplied by the air pump (10) and which can be closed by means of an exhalation valve (74). BAVErtlSCHg VE-REINSBANK (BLZ 700ZOS'f Q) ACCOUNTi4epÖ5^$9· pQStSCJMEpK MUNICH (BLZl 7001OOB0) ACCOUNT 2S7682-«805 2. Diving device according to claim 1, characterized in that the air supply line (14, 16) is designed as a flexible pressure hose. 3. Diving device according to claim 1 or 2, characterized in that net that the air pump (10) can be attached to the body of the device user. 4. Diving device according to claim 3, characterized in that the pump volume (46) of the air pump (10) is connected to a hose (14) leading to the atmosphere and to a hose (16) leading to the mouth of the device user. 5. Diving device according to claim 4, characterized in that the upper end of the hose leading to the atmosphere is attached to a floating body (20). 6. Diving device according to claim 5, characterized in that the floating body is supported by an inflatable buoy (20) is formed, preferably by a diving signal buoy. */. Diving device according to claim 4, characterized in that the hose leading to the atmosphere is closed off from the pump volume (46) by a first valve (44) which opens when the pressure in the pump volume (46) is relatively low compared to the atmospheric air pressure. 8. Diving device according to claim 7, characterized in that the hose (16) leading to the mouth of the device user is closed off from the pump volume (46) by a second valve (66) which opens in the pump volume when the pressure is above the pressure in the lungs or the ambient water pressure. 9i Diving device according to claim _8f , characterized in that the first valve (176) is connected to a third valve (206) which, when the first valve (176) is opened, closes the passage to the device mouth. &bull; I Il Il
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< I 14 &iacgr; user-leading hose (16) opens at least slightly » 10» Diving device according to claim 7 and according to claim 8 or 9, characterized in that a valve housing (160) containing the valves (176, 186, 206) is provided, which comprises a first connection support (162) for the hose (14) leading to the atmosphere, a second connection piece (164) for the hose (14) leading to the mouth of the device user and a further connection (168) for the pump volume (46) of the air pump (10), H. Diving device according to claim 10, characterized in that in or on the valve housing there are also air outlet openings (192) for the exhaled air and an exhalation valve (194) which closes the air exhalation openings and opens when exhaling. 12. Diving device according to one of the preceding claims, characterized in that the air pump (10) comprises a rigid outer body (30), the closed upper side of which is connected to the air lines (12, 14) and the open lower side of which is closed by means of a flexible, bellows-like or sack-like part (76) which, in the event of external overpressure, is pressed into the interior of the outer body (30) while reducing the pump volume (46) and is dimensioned such that it can essentially completely fill the interior of the outer body (30), the actuating device (46, 142) acting on this flexible part (76). 13. Diving device according to one of claims 1 to 11, characterized in that the air pump is designed as a closed, dimensionally stable bellows (102), the upper side of which is the air lines (14, 16) and on the underside of which the actuating device (86) engages. 14* Diving device according to one of claims 1 to 11, characterized in that the air pump (10) comprises a cylinder (30) and a piston (94) guided in the cylinder, the closed upper side of the cylinder being connected to the air lines (14j 16), the underside of the cylinder being open and the actuating device (98) engaging the piston (94). 15. Diving device according to one of claims 1 to 11, characterized in that the air pump is formed by a rotary pump (132). 16. Diving device according to one of claims 1 to 11, characterized in that the air pump (10) is formed by a cylindrical body (30) closed on all sides, in which a piston (112) dividing the cylindrical body into an upper and a lower chamber volume (114, 116) is mounted so as to be displaceable in the axial direction, that the upper chamber volume (114) is connected to the air line (14) leading to the atmosphere via a non-return valve, that the lower chamber volume (116) is connected to the air line (106) leading to the mouth of the device user via a non-return valve, that the piston (112) has an opening closed by a non-return valve (118) which connects the upper and lower chamber volumes (114, 116) to one another, that a spring arrangement (120) is provided which pushes the piston (112) in the direction of the upper Caramer volume (114) and that the actuating device (122) acts on the piston (112) and counteracts the force of the spring arrangement (120). I, 111! «At «. «» «J 17. Diving device according to one of the preceding claims, characterized in that the exhaust air of the air pump (10) is connected to an additional flexible air reservoir (108) via a check valve* Diving device according to claim 17, characterized in that the air reservoir (108) is connected to the mouth of the device user via a hose (16) and a valve-controlled mouthpiece (Fig. 7).
10 19. Diving device according to claim 17 or 18, characterized in that the air reservoir (108) can be attached to the body of the device user. 20. Diving device according to one of claims 3 to 19, characterized in that shoulder straps (77, 78) and/or chest straps (138) and/or back straps and/or thigh straps (103, 105) and/or lap straps are provided for fastening the air pump (10) to the body of the device user. 21. Diving device according to one of claims 3 to 20, characterized in that the air pump (10) can be attached to the user’s chest so as to be in contact with the body. 22. Diving device according to one of the preceding claims, »characterized in that the maximum pump volume (46) of the air pump (10) is about 3 to 10 liters, preferably about 6 liters. 23. Diving device according to one of the preceding claims, characterized in that the actuating device is formed by at least one belt (86), rope (134) or the like connected to the movable member of the air pump (10) _and which at its free end y i ' a foot strap (SO), a foot strap, a shoe or ^the like for connection to a foot of the device user^ 24. Diving device according to claim 23, characterized in that the actuating device comprises a foot strap (90) or the like for each foot. 25. Diving device according to claim 23 or 24, characterized in that the rope (134) is guided over a deflection roller (136) which is held in the region of the foot straps (90) or the like, and that the end of the rope (134) opposite the air pump (132) is arranged fixed relative to the air pump. 26. Diving device according to claim 25, characterized in that that the opposite end of the rope (134) is attached to the side of the body of the device user opposite the air pump (132). 27. Diving device according to one of claims 1 to 22, characterized characterized in that the actuating device is formed by at least one belt (142), rope (152) or the like connected to the movable member (76) of the air pump (10), which has a handle (144, 146) on its free end for gripping by the device user. 28. Diving device according to one of claims 23 to 27, characterized in that the length of the belt (86, 142), rope or the like is adjustable, in particular by approximately 40 to 60 cm. 29.6 Diving device according to claim 28, characterized in that a quick-release ^fastener (158) is provided for adjusting the strap length. 30. Diving device according to one of claims 27 to 29, characterized in that the handle (144) has the shape of a rod to which the belt (142), the rope or the like is fastened, in particular centrally. 31. Diving device according to claim 30, characterized in that the rod (146) has a deflection roller (148), in particular arranged centrally, around which a cable (152) is guided and secured, that one end of the cable (152) is fastened to the movable member (76) of the air pump (10), that the other end of the cable (152) is fastened in the region of the lower edge of the air pump (10), and that the length of the cable corresponds approximately to the axial length of the air pump (10). 32. Diving device according to one of claims 23 to 31, characterized in that the actuating device has both at least one foot strap (90) or the like and additionally at least one handle (146). 33. Diving device according to claim 32, characterized in that the additional at least one handle (146) can be detachably attached to the air pump (10). 34. Diving device according to claim 1, characterized in that the air pump (10) can be attached to a floating body (128) and is connected to the mouth of the device user via a hose (106), in particular with the interposition of a flexible air reservoir (108) attached to the body of the device user. 35. Diving device according to claim 34, characterized in that the actuating device is formed by a Bowden cable (130).
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