EP0084550A4

EP0084550A4 - Device for discharging pourable material from closed space by means of gas of over-atmospheric pressure.

Info

Publication number: EP0084550A4
Application number: EP19820902370
Authority: EP
Inventors: Miklos Szabo
Original assignee: Individual
Current assignee: Individual
Priority date: 1981-07-27
Filing date: 1982-07-27
Publication date: 1984-01-10
Also published as: BR8207800A; WO1983000316A1; PT75337A; GR77246B; PT75337B; JPS58501169A; EP0084550A1; HU182361B; AU8765282A

Abstract

Device for discharging pourable material from a closed space by means of gas of over-atmospheric pressure which has a material tank, a gas holder, a mantle encasing at least partly the material tank, a piercing needle connected to the mantle and serving for opening the material tank and an actuating mechanism for opening and closing the discharge orifice being in connection with the orifice of the material tank. The essence of the device consists in that it has a passage connecting the inner space of the gas holder and that of the material tank in operable condition of the device, as well as an end plate closing the passage in inoperable condition. The advantage of the device according to the invention is that by means of this device to be produced and operated simply and inexpensively the task of spraying, and pressing out, respectively various pourable substances is solved without environment contamination and risk of accident.

Description

DEVICE FOR DISCHARGING POURABLE MATERIAL FROM CLOSED SPACE BY MEANS OF GAS OF OVER-ATMOSPHERIC PRESSURE

The Invention is a device for discharging pourable material froa a closed space by means of gas of over-ataospheric pressure which has a material tank, a gas holder, a mantle encasing at least partly the material tank, a piercing needle connected to the aantle and serving for opening the material tank and an actuating device for opening and closing the discharge orifice being in connection with the orifice of the material tank.

Several variants of devices for spraying and pressing out of pourable aaterials are known. Wide-ranging are used the devices operating with carrier gas (aerosol devices) which have a cyllndlrcal tank containing aaterial aixed with carrier gas, spray valve and pipe extending from the valve to the bottom of the tank. A serious drawback of aerosol devices Is that the carrier substance, the froon-gas — according to the well-established assumptions — has environment damaging and carcinema generating effects, on the one hand, and the relatively expensive device aay be thrown away after being used, cannot be refilled, on the other hand, and finally It is accompanied by the risk of accident (e.g. even when opening empty tanks, children say be unjured) and they aay be saled only with cylindrical bottles, i.e. they cannot be designed.

The Amerlcan patent specification No. 3,240,391 relates to an aerosol device in the tank of which a second tank considerably smaller than the first one it arranged; the wall of this latter may be sprayed. In the two tanks two kinds of substances - e.g. two constituents of the two-component synthetic resin - may be contained which by spraying the smaller tank, mix with each other. Neither this device is free of the above mentioned general drawbacks of the aerosol devices.

The subject matter of the American patent specification No. 2.559.091 is similarly an aerosol device. This device has two tank parts to be connected to each other by means of threaded joint. The upper tank part is the material tank which has a closing valve and a pipe starting therefrom and extending to the region of the bottom plate of the upper tank part. ln the lower tank part a cartridge containing compressed gas may be arranged, the sealing of which is pierced by a needle when screwing the two tank parts together and the liquid in the upper tank part being aixed with the high-pressure gas constitutes a mixture suitable for aerosol spraying. By means of this device the user himself can produce the liquid-gas mixture from the two components, otherwise, however, the drawbacks are the same as enumerated above, moreover, its mass use is complicated for the average user (storage of gas cartridge, exchange, filling of material, screwing in and out of the device components, etc.).

The American patent specification No. 3.858.65 introduces a fire extinguisher in the external cylindrical container of which a similarly cylindrical material tank containing the liquid or gas suitable for fire-fighting may be arranged and the two elements may be air-tightly joined by means of releasable fastening. A cartridge containing high-pressure gas belongs also to the device the sealing of which is pierced by a hollow needle when operating the device and the gas may flow into the upper part of the material tank. A pipe is arranged in the centre line of the material tank, being in connection with the extinguishing- spraying head piece. The gas makes the estinguishing substance move in the material tank and the substance jet may be directed to the fire. The device may be dismembered after being used, the material tank may be refilled, the gas cartridge may be exchanged and the device may be assembled again. The device has a highly complicated channel and sealing system, the connection between the bearing body and the material tank requires numerous components, therefore the device is expensive, its use is wearisome and it is applicable exclusively for fire extinguishing.

The subject matter of the American patent specification No. 3.984.034 is a device of non aerosol type serving also for spraying, and pressing out, respectively pourable and pasts-like substances which has a cylindrical bearing body empty from inside, made of rigid material, and a material tank made of flexible (pliable) material to be arranged in the bearing body, the rigid upper tank part being pierced by a needle. The material tank is pierced by a needle joining the pressing-out or piercing valve. The end opposite to the valve of the material tank is fastened to a cylindrical piston removable in the bearing body; the disc seats on the wall of the bearing body along its flanves so that it is in sealed connection with the bearing body. In the space beneath the piston a gas of over-atmospheric pressure is introduced, e.g. the space beneath the piston is filled by means of hollow needle. Under the effect of the gas pressure the substance discharges through the valve and as the gaa is going down, the flexible material tank is wrinkled. The drawback of this solution consists in that the carrier gas shall be introduced into the device by a separate operation, the sealing of the disc-shaped piston is uncertaine and after the pressing-out of the substance the bearing body can be relieved from the over-pressure gas in a highly complicated manner, finally the spray valve can be cleaned only difficultly, by a separate operation.

The American patent specification No.3.819.092 relates to a device operating on a similar principle. The device described therein has also a cylindrical body made of rigid material, to the upper part of which a spraying valve is connected. In the body of the device a piston is moving which has a rigid disc bearing by its flanges against the inner surface of the cylindrical side wall and it has a hose made of flexible (pliable) material, the lower open part of which is connected to the bottom part of the device body in its peripheral range. The device body serves here also as a material tank. Before use, the cover of the device body - comprising also the spraying valve - is removed, the disc of the piston is then in its lower end position, whereas its hose is in completely plied state. The substance to be sprayed is filled from above in the tank and the cover is fastened by the valve, whereas from below a pressurized gas or gas generating liquid is introduced In the hose. As the substance is consumed the rigid disc of the piston moves upwards and the wrinkles of the hose straighten. The drawback of the solution consists in that the tank shall be filled always directly with the substance to br sprayed which is a wearisome, complicated and awkward opration for the average consumer and in case of different substances the tank and the spraying valve shall be always thoroughly cleaned. The introduction of the gas is cumbersome and so is the deaeratlon of the tank, too.

Devices operated with liquified gas are also known where the gas is in direct contact with the substance to be sprayed. The drawback of these solutions is that - as operating with petroleum derivatives - they cause environment contamination, they are incendiary and presumably have carcinoma producing effect; moreover, since they are in direct contact with the substance to be sprayed or pressed out, they damage its consistency and quality, and with some substances, they cannot at all mixed.

The task of the invention is to produce a device for spraying or pressing out pourable substances which is exempt from the above mentioned drawbacks of the devices serving for similar purpose, the manufacture and use of which are simple, inexpensive and the use of which is unobjectionable from sanitary, safety and environment protection points of view.

The invention is based on the recognition that if the operational process takes place in the material tank itself, no piston mechanism is required, the material tank must not be made of pliable material, the gas may be kept within the material tank during the complete use and after the consumption of the substance the gas may be expelled through the valve

(spray head) serving for the spraying of the substance. As a consequence of these facts the construction of the device is much simpler than the former ones, consequently, it say be cheaper and the degasification indispensable from safety point of view can be effected without any additional structural part.

On the basis of this recognition the set task is performed in compliance with the invention by means of a device which has a material tank, a gas holder, a mantle encasing at leaat partly the material tank, a piercinf needly connected to the mantle and serving for. opening the material tank and an actuating mechanism for opening and closing the discharge orifice being in connection with the orifice of the material tank, and the essence of which consists in that it has a passage connecting the inner space of the gas holder and that of the material tank in the operable state of the device and an element closing the passage in the inoperable state of the device. According to an embodiment, the gas holder and the material tank are developed in one piece and the channel forming the passage is made in the wall of the gas holder. In an expedient embodiment, the device has a seat - transversal to the longitudinal line of the channel - connected to the channel forming the passage, and the said seat overlaps the section of the channel; and which has outside the channel a part suitable for receiving the end piece and the end piece is a body made of elastically deforming material to which an actuating element led outside the gaa holder e.g. a handle is connected. According to another inventive criterion the - expediently pressure-tight mantle and the material tank or/and gas holder ara connected to each other by a grooved-flanged joint.

It is expedient if the mantle is mads of an elastically deformable material, has a groove running around the inner surface end the flange extending sideways froa the walling of gas holder is developed so as to be connected by clicking. It may be expedient also if in the material tank a piston separating the substance to be sprayed and the gas, movable from the channel to the orifice is arranged. In another advantageous embodiment of the device, in the material tank a hose of increasable volume, serving practically as a piston for leading out the substance ie arranged, into the inner space of which the channel joining the gas holder and the material tank is connected and the Inner space of which channel is separated from the space containing the substance in a gas-tight manner. The hose is made fully or partly of elastically deforming material, or/and of material able to take up permanent set or/and - in its state before the actuation and in its state including at least a phase of the actuation - of a material of plied wall.

According to another inventive criterion, the mentle is provided in the range of its end opposite to the open (connecting) end with actuating mechanism which compriaes a key (push-button) or a similar construction which can be puβhed or pulled against an elastic fores and is in operating connection with the valve opening and closing the orifice, and which actuating construction has an atomizer in case of substance to be sprayed. According to a further characteristic, the actuating construction is provided with a hollow needle extending into the inside of the inner space of the mantle. A further embodiment of the device according to the invention is characterized in that between the gas holder and the material tank a body made of compresible - preferably elastic - material, e.g. a plate is arranged in which a hollow piercing needle directed with its point towards the hole in the wall of the gas holder but ending in the plate with a distance from the hole whereas with its end opposite to the point a hollow piercing needle leading into the material tank is embedded, while the passage is formed by the hole and the channel of the piercing needle, and the element closing the passage by the range between the point of needle and the channel. With this solution it is advantageous if the piercing needle is fixed by its clamp in the sheet - made preferably of rigid, solid material 7 arranged on the compressible plats. The hose fixed in the material tank - having a volume increasing in the rate of discharge of the substance - is forced expediently by a membrane able to become stretched to such an extent as to fill the entire inner space of the material tank or at least a predominant part thereof.

A further embodiment of the device according to the invention is characterized in that between the material tank and the gas holder a body made of compressible, preferably elastic aaterial, e.g. a plate is arranged beneath which a hole is made in the wall of the gas holder; in the inside of the mantle, a hollow piercing needle is fastened the channel of which - e.g. through a sideway orifice ends in the material tank led into the mantle; the position and length of the piercing needle is chosen so that when arranging the charge formed by the gas holder and material tank in the mantle, the needle through the plate between the material tank and the gas holder and through the hols in the wall of tte gas holder, piercing the plats, extends into the gas space of the gas holder and tte channel and orifice of the piercing needle forms the passage, whereas the plate constitutes the element closing the passage, and that a pipe connected to the orifice of the actuating mechanism is fastened in the inside of the mantle, which has a prickling point, arranged in the aaterial tank in the assembled state of the charge and the mantle, and its point ends in the vicinity of the plate encasing the material tank. With this solution, it is expedient if the piercing needle is fastened with its entd opposite to its point to the wall comprising the actuating mechanism of the mantle and the orifice of the channel is formed in the vicinity of this wall, and if in the material tank a material-free space is above the level of the substance, end from the channel of the piercing needle the orifice leade into this space part.

A further advantageous embodiment of the device is characterized in that the material tank surrounds in ring shape the gas holder, while the side wall of the gas holder and the inner wall of the material tank are preferably identical; the gas holder is shorter at one end than the material tank, so that in the charge formed by the gas holder and the material tank a seat is foreseen; and in the side wall of the aaterial tank limiting the seat one or more orifices are developed and that the device has a piercing element, e.g. a piercing needle comprising the channel constituting a part of the passage connecting the inner space, of the gas holder and that of the material tank. With this solution, it is expedient if from the seat the orifice leads to such a space part of the material tank which is separated by a membrane able to stretch to such an extent as to fill the entire volume of the tank or the over-whelming part thereof, from that part of the materiel tank, in which the substance to be led out is contained; the needle piercing the material tank is connected - preferably eccentiricalla - to the mantle above the cover of the material tank and that the device has a piercing member serving for closing the mantle as well as for establishing the connection between the gas holder and the material tank, which comprises a disc seating in the groove of the mantle with its peripheral range or a similar body and contains a hollow piercing needle extending to the inside of the mantle, which is arranged where the seat of the charge arrives when placing the charge into the mantle end the length of the piercing needle is chosen so as to be suitable for piercing the end plate of gas holder; and from the channel of the piercing needle a side orifice leads into the seat, consequently the paeange connecting the gas holder to the material tank is formed by the channel of the piercing needle, by the orifice formed in the wall-part of the material tank limiting the seat, whereas the element closing the passage is constituted by the end plate of gas holder, to be pierced by the piercing needle. The device may have a grated - hold-down - guide member made preferably of plastic material, arranged above the membrane and able to move off in the material tank, positively, guided by the gas holder. Further on, it is expedient if to the aantle a hollow piercing needle connected to the leading-off orifice of the actuating mechanism, piercing the cover plate of the gas holder on the side towards the actuating mechanism is joined; and the device has a piercing member serving for closing the mantle and for establishing the connection between the gas holder and the material tank, which comprises a disc seating in the groove of the mantle with its peripheral range or a similar body and containe a hollow piercing needle extending to the inside of the mantle which is arranged where the seat of charge arrives when placing the charge into the mantle and the length of the piercing needle la chosen so as to be suitable for piercing the end plate of gas holder, and from the channel of the piercing needle an orifice leads into the seat, consequently the passage connecting the gas holder to the material tank la formed by the channel of the piercing needle, by the orifice leading out of the channel, by the seat as well as by the orifice formed in the wall part of the material tank limiting the eeat, whereas the element closing the passage is constituted by the end plate of gas holder to be pierced by the piercing needle; and that in the material tank a substance having a volume smaller than that of the material tank - of a quantity leaving free a space part in the material tank - ls arranged. The piercing, needle of the material tank is eccentrically arranged in the mantle, and in the material tank there is a pipe the upper end of which reaches under the piercing needle at the cover of the material tank, whereas its lower and reaches just over the bottom plate of the material tank. It is also advantageous if the mantle serving for accepting the charge and the head part containing tte actuating mechanise are developed as independent unite connectable, however, to reach other, while the mantle is blocked with end plate at one and, and is open at the other end, and is developed so as to be suitable for being coupled to the head part; the charge ie arranged In the mantle so that its end comprising the seat laγa towards the head part; the perforation(β) in the wall part confining the seat is (are) enclosed from outside by elastic ring(s); in the wall of the gas holder. in the range of the end opposite to the seat arranged in the gas holder perforation(a) is (are) developed which is (are) closed from inside by elastic ring(s) - made expediently of rubber; the piercing needle of the head part falls into the range of the seat and lit length exceeds the depth of the seat as well as the dimension coming to the common thickness of walls transversal to the needle, and there is (are) orifice(s) leading from the channel of the needle to the seat; and the passage between the gas holder and the material tank is formed by the channel of piercing needle, by the side orifice(s) of the needle as well as by the orifice(s) leading out of the seat, whereas the element closing the passage is constituted by the wall blocking the seat.

A further advantageous embodiment of the invention is characterized in that the elastic rings are made of rubber. It is expedient if the elastic ring arranged inside the gas holder is welded and/or glued in the range of its upper flange to the inner surface of the wall of gas holder. Further on, it is advantageous if the seat is closed by a wall on the outer side which is expediently colinear with one end plate of the material tank. In case of certain materials it may be advantageous if in the material tank under the elastic ring surrounding the seat there is a ring-shaped piston fitting to the inner surface of the material tank to be moved off positively guided by the gas holder. The gas holder and the material tank maintain preferably their fore and volume. It is expedient if there is e.g. a lever of bayonet mechanism serving for clamping and closing the charge constituted by the material tank and the gas holder and the mantle and/or the piercing element completing the mantle or the like. Finally, according to an advantageous inventive criterion, for joining up the mantle and the piercing element, and/or the mantle end the head part, a groove is developed in the range of the end(s) of the mantle, whereas on the outer surface of the ring extending from the head part or/and from the piercing member a rib fitting into the groove la formed, while the device parts comprising the rib end the groove are made of elestically deforming material, preferably of plastic material. The invention will be now introduced in more details on the basis of the enclosed drawings, which contain some advantageous embodiments and structural partial solutions of the device. In the drawings

Figure 1 shows an embodiment of the aggregate gas holder and material tank in schematic longitudinal section; Figure 2 represents the mantle fitting to the material tank, similarly in longitudinal section; In Figures 3 and 4 another embodiment of the charge constituted by the material tank and gas holder, as well as the pertaining mantle a re to be seen; in Figure 5 the portion A marked in Figure

3 is shown in larger scale; Figures 6 end 7 represent a further advent ageous embodiment of the charge and the pertaining mantle; Figure 8 is the portion B marked in Figure

6, in a larger scale; in Figures 9 and 10 a further advantageous embodiment of the charge and the pertaining mantle is to be seen;

Figure 11 represents the clamping element to be seen in Figure 9, in top view; Figures 12 and 13 another embodiment of the charge and the pertaining mantle is illustrated; Figures 14 and 15 show another embodiment of the charge and the pertaining mantle in Figures 16 to 18 another advantageous embodiment of the device is illustrate As it ie to be seen in Figure 1, a material tank 2 serves for receiving the bulk material 1 which may be made either of rigid or of elastic material, its shape may be practically optional, in the present embodiment it is cylindrical. The gas space 3 of the gas holder marked with reference number 4 is surrounded by a pressure-tight wall 4a. In the gas space 3 the gas of over-atmospheric pressure 3a, preferably compressed air is to be found. The material tank 2 and the gas holder 5 are connected to each other so as to form a unit, they constitute one member. The gas space 3 of the gas holder 4 is joined to the material tank 2 by the passage formed by the channel 5 developed in the wall 4a of the gas holder. The channel 5 - which may be e.g. of circular section - is closed (sealed) by an end piece 6 in the position according to Figure 1, which on piece 6 is arranged in the seat 13 overlapping the cross section of the channel, developed similarly in the wall 4a of the gas holder 4. In this seat 13, sideways from the channel 5, place enough for receiving the end piece 6 is foreseen. To the end piece 6 a handle 7 is connected, which is led outside the gas holder 4 in a channel leading out of the seat 13, formed in the wall 4a, i.e. it extenda sideways therefrom so that by its pulling, the end piece 6 can be moved away into the part outside the passage 6 of the seat 13, whereby the way of the gas 3a may be rendered free towards the material tank 2 through the channel 5 constituting the passage.

In case of the present embodiment, in the material tank 2 a hose 8 made of elastic material having plied wall in inoperable state of the device (according to Figure 1) is arranged at the bottom which is connected in a gas-spraying manner to the surface of the wall 4a of gas holder 4 limiting the material tank 2. The hose 8 is compressed in its state shown in Figure 1, its inner space 8 has therefore a minimum volume. The channel 5 leads directly to the inner space 8a, the substance to be discharged 1 is arranged above the hose 8 in the material tank 2. The hose 8 serves for the separation from each other of the substance 1 and the gas 3a, on the one hand, and for the pressing out of the substance 1 as a piston, on the other hand.

In Figure 2 the mantle marked as a whole with reference number 9 is shown, which is made of pressure-tight, elastically deforming material, whereas its form corresponds to the form of the material tank 2, i.e. in the present case it is cylindrical. In the range of the lower end of the wall of mantle 9 a groove 14 running around at the bottom is made. At the upper part of the gas holder 4 (Figure 1), above the handle 7, a flange 15 running similarly around is to be found, which can be clicked to the groove 14, whereby a connection is establisched between the mantle 9 and the charge 22 constituted by the gas holder and material tank.

In the upper end - opposite to the groove 14 - of the mantle 9 the actuating mechanism marked as a whole with reference number 16 is arranged, to the atomizer 11 of which the needle 10 extending into the inside of the mantle 9, and having an inner hollow 10a is connected. For spraying the substance, the orifice 17 is foreseen, which can be brought into contact with the atomizer 11 by means of key 12 to be pressed against the force of spring 12a.

The operation of the device according to Figures 1 and 2 is as follows:

The unit constituted by the material tank 2 and the gas holder 4 - which may contain the most different substances 1 - is introduced into the mantle 9, the inner diameter D₂ of which is somewhat larger than the outer diameter D₁ of the material tank. In the course of this operation, the needle 10 pierces the end plate 2a of the tank 2, whereas the flange 15 of the gas holder 4 clicks to the groove 14 of the mantle 9. Thereby the device is in assembled state but is not yet operable. The device becomes operable if the user removes the end piece 6 from the section of the passage formed by the channel 5 by pulling out the handle 7. The end piece 6 gets in the left part of the seat 13 - outside the section of the channel 5 - and the end piece is maintained in this position, pressed to the side face of the seat 13 by the compressed air 3a. As a result of the opening, compressed air 3a flows from the space 3 into the space 8a and - whithout contacting the substance

I - exerts a pressure to the substance 1. If the user of the device presses now the key 12, the substance 1 arrives through the hollow 10a of the needle 10 into the atomizer

II and - in a manner known by itself - gets into the open through the orifice 17 in atomized form. Similarly to the known devices, the spraying of the substance la continued as long as the user keeps the key pressed. The hose 8 operates as a piston and presses the substance 1 above the needle 10 by means of the compressed air 3a. As the substance 1 is consumed from the material tank 2 during tte use, the space 2a increases more and more, and when the substance 1 is completely consumed, the needle 10 pierces also the hose 8. Then, by pressing down the key 12, only the compressed air gets into the open through the hollow 10a of the needle 10, through the atomizer 11 and the orifice 17, whereby two highly significant advantages are ensured: no separate air escape valve is required, on the one hand, since the compressed air can simply removed by pressing down the key 12, and the air flowing out at high speed practically cleans the needle 10 - and the hollow 10a thereof, too - in one operation, so to say automatically, on the other hand, so that no substance remains in the device. Therefore, the device following the removal of the material tank 2 is suitable without additional cleaning for the spray of other substance, ie the same mantle 9 can be used combined with material tanks 2 containing different substance 1. The alreedy described structural parts of the device shown in Figures 3 to 5 are marked with the already used reference numbers. With this solution, the wall 4a of the gas holder 4 fitting to the retentive aaterial tank 2 is thinner than with the device according to Figure 1 and the passage is constituted by the hole 5a and the channel 19a of the piercing needle 19 (see later) To the wall 4a the elastic (springy) plats 20 bears up which may be made e.g. of rubber or plastic material. Above the hole 5a, a piercing needle 19 is embedded in the elastic plate 20 the lower and of which does not reach the lower surface of the elastic plate 20. The plate thickness x to be seen in Figure 5 is chosen so that the pressure of the gas 3a in the gas space cannot press this plate part against the piercing needle 19. As it is to be seen similarly in Figure 5, a passing hols (channel) 19a is made in the piercing needle 19 and the piercing needle 19 is embedded by its campling flange 19b in the eheet 18 - made expediently of rigid material - which bears against the elastic end plate 20, and is, preferably constituting one unit therewith, developed together with the gas holder 4 beneath them and the material tank 2 above them. In the lower part of the material tank 2 a membrane 21 made of gas-tight material, e.g. of rubber or plastic material is fixed (marked by dotted line in Figure 3) which is able to elongate to such an extent that it can fill. the whole inner space or at least the most part of the inner space of the material tank 2 without being torn. According to those said above, the plate 20 functions as the closing element of the passage constituted by the hole 5 and the channel 19a in the out-of-operation position of the device.

The operation of the device according to Figures 3 to 5 is as follows:

The charge to be seen in Figure 3, marked as a whole with reference number 22 - the retentive material tank 2 of which is fil led with the substance 1 to be sprayed - is arranged in the mantle 9, the inner space of which is completely taken up by the charge 22 in case of the present embodiment. The charge is inserted in the mantle - and in the meantime the flange 15 of the gas holder 4 is clicked in the groove 14 of the mantle 9 - by means of some lever-type or similar closing mechanism (not shown in the Figure) which mechanism pulls the mante onto the charge by a force great enough to make the piercing needle 9 breek the wall section 20a of thickness x of the elastic plate 20. In this way, the gas 3a can flow through the passage constituted by the hole 5a and the channel 19a of the piercing needle into the space 2a behind the membrane 21 of the material tank 2. Then, by operating the actuating mechanism 16, the device can be properly used i.e. through the orifice 17 the substance 1 can be sprayed to its place of destination. The material quality and thickness of the elastic end plate 20 shall be chosen so that the plate part 20a outside the mantle - at least in all likelihood - could not be broken. As the substance 1 is consumed, the membrane 21 expands to an even increasing degree end finally - when the substance 1 is completely consumed from the tank 2 - it reaches the piercing needle 10 (Figure 4) which pierces it. Then the key 12 is kept pressed down as long as the entire gas quantity escapes froa the aaterial tank 2. The escaping gas coapletely cleans the channel 10a of the piercing needle 10, the atomizer 11 end the orifice 17. Then, the charge 22 can be removed from the mantle, can be thrown away and with the arrangement of the new charge, the above described operations can be carried out again.

The conetruction of the device according to Figures 6 to 8 is similar to that of the device according to Figures 3 to 5, the gas holder 4 and the material tan 2 constitute a charge 22 also in this case. Even in this case,between the gas holder 4 end the material tank 2 an elastic end plate 20 is arranged which covers the hole 5 in the well 4a of the gas holder 4. With this solution, no elongating membrane is in the material tank 2, the mantle 9, in turn, is developed contrary to that according to Figures 2 and 4, inasmuch as the piercing needle 23 containing the channel 23a, establishing the connection between the gas holder and the material tank is fastened in the inside of the mantle and falls into the longitudinal geometrical centre line of the mantle. In the inside of the piercing needle a hole (channel) is, of course, made. In the upper part, near the head part 9b of the mantle 9, a side orifice 24 opens from the channel of the piercing needle 23 (see also Figure 8). The piercing needle 23 has a length h, and when the charge 22 iβ arranged in the aantle 9, it reaches into the gas apace 3 of the gss holder 4 of the charge (the gβs holder 4 is shown by dotted line in Figure 7). The atomizer 11 is eccentrically arranged and to its outlet a pipe 25 is connected the length h₂ of which is chosen so that it ends directly above the end plate 20 in a point 25a (Figure 7). In this embodiment, the passage connecting the gas holder and the material tank in operating position is constituted by the hole 5a, the channel 23a of the piercing needle 23 aβ well as by the orifice 24, whereas as an element closing the passage in out-of-operation state of the device the plate 20 functions. The substance 1 to be sprayed fills the material tank 2 expediently not fully but only up to the level v (Figure 6) so that above the liquid mass a gas space 2a remains.

The device according to Figures 6 to 8 is operated in βuch a manner that when the mantle 9 la pulled onto the charge 22 in any way, by aome above mentioned tightening-closing mechanism, the piercing needle 23 pierces the elastic end plate 20, whereby through the chennel 23a of the piercing needle 23 and the side orifice 24 a connection is established between the gas space 3 of the gas holder 4 and the material tank 2, namely βo thet the gas arrives in the space 2a above the substance 1 to be sprayed (see Figure 6). Th gaβ exerts a pressure froa above onto the liquid of h level so that the substance 1 gets through the pipe 25 into the atomizer 11. By pressing the key 12 the device can be then properly used; after the substance 1 being consumed, the mechanism 16 is actuated as long as the gas escapes end the passages of the βpray head are cleaned. Finally the charge 22 can be removed, thrown away and a new charge may be arranged in the mantle 9.

The charge 22 of the device according to Figures 9 to 11 contains also a aaterial tank 26 and a gas holder 27 but here the gas holder 27 is surrounded by the aaterial tank 26; the tanks are concentrically arranged. The bottom plate 28 of the gas holder 27 is arranged above the bottom plate 26a of the material tank at a distance y so that beneath the bottom plate 28 a seat 36 is formed To the lower end of the circular material tank 26 a membrane 30 of elastic (expansible) material is fastened in the ineide around above which along the tank a slidable grated hold-down plate 31 ie located; the conetruction thereof is well illustrated in Figure 11. Figure 11 shows alβo that the charge 22 - and also the mantle, of course - have oval ground plan in the present embodiment.

In the inner βide wall 26b of the aaterial tank 26 an orifice 37 iε made leading froa the epace beneath the membrane 30 to the eeat 36. The βeat 36 iβ closed from beneath by a wall 56.

As it is to be seen in Figure 10, a piercing member marked aβ a whole with reference number 32 belon to the mantle 9 and the said member has in top view an oval disc 38 end a piercing needle 33 extending therefrom to the centre of the disc. From the channel 35 of the piercing needle sideways an opening 34 leads out at the lower part. The disc 38 fits gas-tightl into the groove 14 of the mantle 9 along ita flanges. The atomizer 11 belonging to the actuating machanism 16 (Figure 10) is eccentrically arranged and therefrom a hollow piercing beedle 10 extending downwards projects in a point where it is covered by the cover 29 of the gee holder 26 (Figure 9).

In the embodiment according to Figures 9 to 11 the passage connecting the gas holder and the material tank is constituted according to those said above by the channel 35 of the piercing needle 33, its side orifice 34, the seat 36 as well as the hole 37 (Figure 9), as an element closing the passage the bottoa plate 28 of the gas holder serves (Figure 9).

The operation of the device according to Figures 9 to 11 is as follows:

The charge 22 is arranged in the mantle 9 so that the needle 10 pierces the cover 29 of the aaterial tank 26, whereby a connection ia established between the inner space of the aaterial tank 26 end the atomizer 11; the subβtance 1 to be sprayed but being not yet - of course - under pressure cannot escape from the tank, even if the key 12 would be accidentally pressed.

In the next operation the piercing member 32 is connected to the mantle 9 e.g. by means of some lever or bayonet-type tightening-closing mechanism. During thi operation the piercing needle 33 breaks the wall 56 of the seat 36 as well as the bottom plate 28 of the gas holder 27 βo that the gas 3a flows froa the gas holder through the channel 35 of the piercing needle 33 and through its side orifice 37 (Figure 10) into the seat 36 (Figure 9) and from there through the orifice 37 into the space 30a beneath the membrane 30 and in this way it exerts pressure to the substance by the intermediation of the membrane 30. The grated tightening member 31 slides above the membrane in the tank upwards and promotes the effective conduction, the controlled expansion of the membrane and the uniform exertion of pressure. By pressing down the push-button 12 of the actuating mechanism 16 the substance 1 flows through the channel 10a of the piercing needle 10 into the atomizer and from here to its place of destination, i.e. the actuation of the device occurs in the above described manner. In the upper end position the piercing needle 10 breaks both the grated tightening member 31 and the membrane 30 so that the gas flowing through the spray head and cleaning it escapes into the open. After the removel of the piercing member 32 the empty charge 22 can be removed from the mantle 9 and can be thrown away, a new charge can be arranged in the mantle and the device can be actuated again in the above described manner.

The device shown in Figures 12 and 13 deviates from the device according to Figures 9 to 11 only inasmuch as no membrane 30 and tightening member 31 a re in the material tank 26. In Figures 12 and 13 the identical structural eleaente are marked with the already used reference numbers. The level v of the liquid to be sprayed is under the cover 29 in the material tank 26 so that here a space 39 develops (Figure 12).

The operation of the device according to Figures 12 and 13 is as follows:

The charge 22 is introduced into the mantle 9 and by this operation the piercing needle 10 enters through the cover 30 into the gas space. In this way a connection is established between the inside of the gas holder 27 and the atomizer 11, as long as, however, the push-button 12 is not pressed down the gas 3a remains in the closed system.

In the next step the piercing member 32 is arranged - i.e. stretched and closed - in a way described already in connection with Figures 9 to

11, the needle 33 of which piercing the wall 56 and the bottom plate 28 penetrates also in the gas holder

27. Thereby a connection is established between tie material tank 26 and the gas holder 27 through the channel 35 of the piercing needle 33 and its side orifice 34 (Figure 13), through the seat 36 and the orifice 37 (Figure 12), the high-pressure gas flows through the substance 1 (liquid) to be sprayed into the upper space of the material tank 26, whereas its place is filled by the liquid flowing through the same way in opposite direction, ao that from this moment the space serving originally as gas space is filled by the liquid to which the pressure of the gas being in the space 39 exerts its effect. When not the push-button 12 is pressed down, the liquid being under the pressure of the gas being in the space part 39 may be forwarded through the atomizer 11 and the orifice 17 to its place of destination, when the liquid is consumed, the gas is let out into the open by the actuation of the push-button

12, whereby the passages of the spray head are cleaned and by the replacement of the charge 22 the device may be repeatedly used.

The device according to Figures 14 and 15 differs froa that according to Figures 12 and 13 only in as much as the piercing needle 10 of the material tank is eccentrically arranged as in case of the mantle according to Figure 10 and - as it is to be seen in Figure 14 - a pipe 41 having a channel 42 rune through the material tank, the end towards the tank cover 29 of the pipe alighs with the piercing needle 10 when arranging the charge 22 in the mantle 9, whereas its lower end is in the vicinity of the tank bottom 26a. This devices operates in such a manner that when the charge is located in the mantle the piercing needle 33 breaks through the wall 56 of the seat and the bottom plate 28 of the gas holder, whereas the piercing needle 10 the cover plate 29 of the material tank so that it penetrates in the pipe hole 42. By actuating the pushbutton 12 the substance 1 can be directed through the pipe hole 42, the channel 10a of the piercing needle 10 and the actuating mechanism 16 to its place of destination. The passage between the gas holder and the material tank, and the end piece, respectively, are identical with those shown in Figures 9 and 10, and in Figures 12 and 13, respectively. The device according to Figures 16 to 18 consists of three parts: the charge 22, the mantle 9 and the head part marked as a whole with reference number 43. The charge 22 differs from that shown in Figure 12 in that in the extension of one and of the gas holder 27 a closed seat 45 limited by the wall 44, by the end plate 40 and by e.g. the cylindrical wall part 27 is foreseen and in the cylindrical wall part 27a perforations 46 are made, closed from outside by an elastic ring 47. This ring is expediently made of rubber and when the device is not operated, it fits tightly to the perforations. In the cylindrical wall of the gas holder 27, in the range of the end opposite to the wall 44, perforations 38 are made, to which the elastic ring 49 fits from inside; this latter is also made expediently of rubber and along its upper flange it may be welded or glued to the inner wall of the gas holder. The material tank 26 surrounds the gas holder 27 also in this case in the same manner as the seat 45. In Figure 17 the mantle and the head part

43 are illustrated in disassembled state. In this case the mantle has a wall 9a and a head plate 9b at end opposite to the latter it is open and on the inner surface in the neighbourhood of the open end a groove 50 running around the wall 9a is made. The head part 43 has a clamping ring 51 extending downwards from which a rib 52 running around extends the profile of which fits in the groove 50 of the mantle 9. The head part 43 and the mantle 9, or at least the parts comprising the groove 50, and the rib 52, respectively, are made of eladtically deforming plastic material, so that when clicking to each otehr the groove 50 and the rib 52 a tight connection may be established between the mantle 9 and the head part 43. As a matter of course, any other connecting mechaniam is suitable for joining the device parts 43 and 9.

The piercing needle 53 extends centrally downwards from the head part 43, i.e. if the charge 22 is arranged in the mantle 9, the needle penetrate into the seat 45 (Figure 16). The length L, of the needle 53 exceeds the common length L₂ of the thicknesses of the seat 45 and the walls 40 and 44. From the channel 53a of the needle 53 orifices 54 open sideways in the point where the needle retiree in the seat 45 (Figure 16) when the device parts according to Figures 16 to 18 are combined in a device. Other parts of the head part 43 are marked with the reference numbers used previously. In Figure 18 that part of the operable device is illustrated in larger seals, where after the assembly the charge 22, the mantle 9 and the head part 43 join with each other.

The operation of the device according to Figures 16 to 18 is as follows: The gas holder 27 of the charge 22 being filled with over-pressure gas 3a, whereas its materia tank 26 with the substance to be sprayed, the charge 22 is put to the market in this state. The gas 3a presses the rubber ring 49 onto the orifices 48 i.e. the rubber ring blocks the way of the gas. On the other hand, the rubber ring 47 - stretching over the orifices 46 - prevents the substance 1 from getting into the seat 45. The charge 22 is arranged in the mantle 9, then the hea part 43 is clicked into the mantle 9. As a result of thi operation the state to be seen in Figure 18 arises, i.e. the needle 53 breaks through the wall 40, passes through the seat 45 and breaks through also the wall 44, and penetrates into the inside of the gas holder 27 since L₁ > L₂ (Figures 16 and 17). Thereby the way of the over-pressure gas 3a is rendered free from the gas holds 27 to the seat 45, aince through the side orifices 54 leading out of the channel 53a of the needle 53 aay flow into the seat 45. The gas removes also the elastic ring 47 from above the orifices 46, thus the substance 1 in the material tank 27 comes under the pressure of the gas 3a. The substance 1 under over-pressure pushes away the rubber ring 49 from the orifices 48 (see lower part of Figure 16), and flows into the space 27, in the piece of the gas 3a. The material tank 26 is namely not full with substance, in starting position its level was marked with v, which means that in the material tank a space 56 is available for the entering gas. If the actuating key 12 of the device is pressed down, the gas escapes into the open through the orifice 17, cleaning simultaneously the channel 53a, the atomizer

11 and the orifice 17, while the substance 1 fills the inner space of the gas holder 27 and finally it appear at the end of the orifice 17. From this moment the device may be properly used by pressing down the key

12 until the substance 1 is consumed. Since the gas pressure does not fall under the pressuie of the substance coming into the seat 45, the rubber ring 47 does not displace during the operation. With this embodiment, the connecting passage is constituted - according to those said above,- by the orifices 46, the channel 53a of the needle 53, the orifices 54 leading out thereof, as well as the orifices 48, whereas the element blocking the material tank from the gas holder in out-of-operation state is constitute by the wall 44 and the elastic rings 47, 49.

It should be noted that in the material tank 26 e.g. a disc-like piston 55 pressing against the inner surface of the wall in the peripheral range above the substance 1 may be also arranged and this piston separates the carrier gas and the substance to be sprayed. While the substance 1 is consumed, the piston 55 moves, of course, downwerds in the tank.

The advantageous effects involved in the invention may be summarized as follows:

The device may be used not only once, is not an expensive products as the devices operating with freon carrier gas, having the same purpose. According to the invention, the gas holder - material tank - mantle from together the device, whereby - following from the solution - the production is rendered extremely simple and inexpensive, and the same is true for the use. The operational process may take place namely in the tank itself as long as the protective aantle ensures the pressure-tightness, and contains the actuating mechenism - and the spray head, if required. The device according to the invention is highly advantageous from the point of view, too, that the residues of the substance to be led out (to be sprayed, and pressed out, respectively) cannot remain in the device since the complete process occures within the material tank, on the one hand, which will be thrown away, and the cleaning of the needle and in the given case, of the atomizer is automatically carried out by the escaping gas at the deaeration - as a consequence of the construction of the device. No separate air escape valve is needed for the deaeration (safety valve), the deaeration may be carried out by the actuating button of the device. The device does not involve any environment contaminating (damaging) or carcinoma generating effect, since the use of petroleum derivative is not needed; there is no risk of accident. The tube of the device may practically be optionally designed, its structural material may be various (plastic material, steel, aluminium, etc.). The device may be rendered auitable also for double operation. This means that in the same protective mantle simultaneously a tank group containing several kinds of substances may be joined. This may be significant e.g. at a journey when the user of the device can take along all necessary cosmetics in one single device. The divided device may be used aleo for making cream. The device is structurally simple, and suitable for mass production. The invention is not restricted, of course, to the above introduced embodiments, but within the scope of protection defined by the claims it may be ralized in several ways. Such an embodiment is e.g. conceivable in which no hose 8 is available but - if the properties of the substance 1 render is possible by removing the end piece 6 the compressed air 3a - or other gas of over-atmospheric pressure - effects directly the substance 1 which is then pressed by the over-pressure gas cushion practically as a gas piston towardβ the orifice 17. Several possibilities are available also for the development of the hose 8: the wrinkling the hose is not absolutely necessary, if its material is elastic to such an extent that its mere elongation renders possible the increase to the required extent of the space 8a. Not only hose but any other construction suitable for this purpose, e.g. a body having an extension stressed around its periphery against the wall of the material tank 2 may be used as piston. The device is suitable for discharging substances of various consistency, such a liquids of different density. powdere, etc. According to the above embodiments shown by way of example the substance is discharged by atomization, but the device, is suitable also for discharging the substance in jet - for simple pressing out - the atomization is not absolutely necessary. The joining of the mantle and the other unit can be ralized in addition to the groove-flange-clicking method by any other structural method. Several other deviations are conceivable without exceeding the scope of protection defined by the claims.

Claims

What we claim is:

1. Device for discharging pourable material from a closed space by means of gas of over-atmospheric pressure which device has a material tank, a gas holder, a mantle encasing at least partly the material tank, a piercing needle connected to the mantle and serving for opening the material tank and an actuating mechanism for opening and closing the discharge orifice being in connection with the orifice of the material tank, c h a r a c t e r i z e d in that it has in the operable state of the device a passage connecting the inner space of gas holder and that of aaterial tank, as well as in the inoperable state of the device an element closing the passage. (July 27, 1981) 2. Device according to Claim 1, c h a r a c t e r i z e d in that the gas holder (4) and the material tank (2) are developed in one piece and the channel (5) forming the passage is aade in the wall (4a) of the gas holder (4). (Figure 1). (July 27, 1981)

3. Device according to Claim 1 or 2, c h a r a c t e r i z e d in that it has a seat (13)

- transversal to the longitudinal line of the channel ( 5) - connected to the channel (5) forming the passage, and the said seat (13) overlaps the section of the channel (5), and which has outside the channel (5) a part suitable for receiving the end piece (6). (July 27, 1981)

4. Device according any of the Claims 1 to 3, c h a r a c t e r i z e d in that the end piece

(6) is a body made of elastically deforming material to which an actuating element, e.g. a handle (7) led outside the gas holder (4) is connected, (July 27, 1981)

5. Device according to any of Claims 1 to 4, c h a r a c t e r i z e d in that the

- expediently rigid, pressure-tight - mantle (9) and the material tank (2) or/and gas holder (4) are connected to each other by a grooved-flanged joint. (July 27, 1981)

6. Device according to Claim 5, c h a r ac t e r i z e d in that the mantle (9) is made of elastically deformable material, has a groove (14) running around the inner surface and its flange (15) extending sideways from the walling (4a) of the gas holder (4) is developed so as to be connected by clicking. (July 27, 1981)

7. Device according to any of Claims 1 to 6, c h a r a c t e r i z e d in that in the material tank (2) a piston separating the substance (1) to be discharged on the gas (3a), movable from the channel (5) to the orifice (17). (July 27, 1981)

8. Device according to any of Claims 1 to 6, c h a r a c t e r i z e d in that in the material tank (2) a hose (8) of increaseable volume, serving practically as a piston for leading out the substance (1) and for separating the gas (3a) and the substance (1) to be discharged is arranged, into the inner space (8a) of which the channel (5) joining the gas holder (4) and the material tank (2) and the inner space (8a) of which hose (8) is separated from the space containing the substance (1) in a gas-tight manner. (July 27, 1981)

9. Device according to Claim 8, c h a r a c t e r i z e d in that the hose (8) is made fully or partly of elastically deforming material, or/and of material able to take up permanent set or/and - in its state before the actuation and in its state including at least a phase of the actuation - of a material of plied wall. (July 27, 1981)

10. Device according to any of Claims 1 to 9, c h a r a c t e r i z e d in that the mantle (9) is provided in the range of its end opposite to the open (connecting) end with actuating mechanism (16) which comprises a key (12) (push-button) or a similar construction which can be pushed or pulled against an elastic force and is in operating connection with the valve opening and closing the orifice (17), and which actuating mechanism (16) has an atomizer (11) in case of a substance (1) to be sprayed. (July 27, 1981)

11. Device according to Claim 10, c h ar a c t e r i z e d in that the actuating mechanism (16) is provided with a hollow ( 10a) needle (10) extending into the inside of the inner space of the mantle (9). (July 27, 1981)

12. Device according to any of Claims 1 and 5 to 12, c h a r a c t e r i z e d in that between the gas holder (4) and the material tank

(2) a body made of compressible - preferably elastic material, e.g. a plate (30) is arranged in which a hollow piercing needle (19) directed with its point towards the hole (5a) in the wall (4a) of the gas holder but ending in the plate (20) with a distance

(x) from the hole (5a), whereas with its end opposite to the point a hollow piercing needle (19) leading into the material tank (2) is embedded, while the passage is formed by the hole (5a) and the channel (19a) of the piercing needle (19), whereas the element closing the passage is constituted by the range between the point of needle (19) and the hole (5a) of the plate (20). (Figures 3 to 5). (March 24, 1982) 13. Device according to Claim 12, c h a r a c t e r i z e d in that the piercing needle (19) is fixed by its clamp (19b) in the sheet (18) - made preferably of rigid, solid material - arranged on the compressible plate (20). (Figure 5) (March 24, 1982)

14. Device according to any of Claims 8 to 13, c h a r a c t e r i z e d in that the hose fixed In the material tank (2) 7 having a volume increasing in the date of discharge of the substance (1) - is formed expediently by a membrane (21, 30) able to become stretched to such an extent as to fill the entire inner space or at least of predominant part thereof of the material tank (2, 26). (July 27, 1981)

15. Device according to any of Claims 1 and 5 to 12, c h a r a c t e r i z e d in thet between the material tank (2) and the gas holder (4) a body made of compressible, preferably elastic material, e.g. a plate (20) is arranged, beneath which a hole (5a) is made in the wall of the gas holder (4); in the inside of the mantle (9) a hollow piercing needle (23) is fastened, the channel (23a) of whidh - e.g. through a sideway orifice (24) - ends in the material tank (2) led into the mantle (9); the position and length (h₁) of the piercing needle (23) is chosen so when arranging the charge (22) formed by the gas holder and material tank in the mantle (9), the piercing needle (23) through the plate (20) between the material tank (2) and the gas holder (4) and through the hole (5 a) in the wall of the gas holder (4), piercing the plate (20) extends into the gas space (3) of the gas holder

(4) and the channel (23a) of the piercing needle (23) and its orifice (24) form the passage, whereas the plate (20) constitutes the eleaent closing the passage; and that a pipe (25) connected to the orifice (17) of the actuating mechanism (16) is fastened in the inside of the mantle (9) which has a prickling point (25a), is arranged in the material tank (2) in the assembled state of the charge (22) and the mantle (9), and its point (25a) ends in the vicinity of the plate (22) encasing the material tank (2). (Figures 6 to 8). (March 24, 1982)

16. Device according to Claim 15, c h a r a c t e r i z e d in that the piercing needle (23) is fastened with its end opposite to its point to the wall (9a) comprising the actuating mechanism (16) of the mantle (9), and the orifice (24) leading out of the channel (23a) is formed in the vicinity of this wall (9b). (Figures 7 and 8). (24 March, 1982) 17. Device according to Claim 15 or 16, c h a r a c t e r i z e d in that in the material tank (2) a material-free space part (2a) is above the level (v) of the substance (1), and from the channel (23a) of the piercing needle (23) the orifice opens into this space part (2a). (Figure 6). (24 March,

1982)

18. Device according to any of Claims 1 and 5 to 12, c ha a c t e r i z e d in that the materiel tank (27) surrounds in ring shape the gas holder (27) while the side wall of the gas holder and the inner wall of the material tank are preferably identical; the gas holder (27) is shorter at one end than the material tank (26) so that in the charge formed by the gas holder and the material tank (22) a seat (26; 45) is foreseen and in the side wall of the material tank limiting the seat one or more orifices (37, 46) are developed; and that the device has a piercing element, e.g. a piercing needle (33, 53) comprising the channel (35, 53a) constituting a part of the passage connecting the inner space of the gas holder (27) and that of the material tank (26). (Figures 12 to 18). (24 March, 1982)

19. Device according to Claim 18, c h a r a c t e r i z e d in that from the seat (36) the orifice (37) opens in such a space part (30a) of the material tank (26) which is separated by a membrane (30) able to elongate to such an extent as to fill the entire volume of the tank (2) or the overwhelming part thereof, from that part of the materiel tank in which the substance (1) to be discharged is contained; the needle (10) piercing the material tank (26) is connected - preferably eccentrically - to the mantle (9) above the cover (29) of the material tank; and that the device has a piercing member (32) serving for closing the mantle (9) as well as for establishing the connection between the gas holder (27) and the material tank (26), which comprises a disc seating in the groove (14) of the mantle (9) by its peripheral range, or a similar body and a hollow piercing needle (33) extending therefrom to the inside of the mantle, which is arranged where the seat (36) of the charge arrives when placing the charge (22) into the mantle, and the length of the piercing needle (33) is chosen ao as to be suitable for piercing the end piece (28) of the gas holder (27); and from the channel (35) of the piercing needle a side orifice (34) opens into the seat (36), consequently the passage connecting the gas holder to the material tank is formed by the channel (35) of the piercing needle (33), by the orifice (34) leading sideways from the channel, by the seat (36) as well as the orifice (37) developed in that wall part of material tank limiting the seat, whereas the element closing the passage is constituted by the end plate (28) of the gas holder (27) to be pierced by the piercing needle (33). (Figures 9 to 11). (24 March,

1982).

20. Device according to any of Claims 5 to 19, c h a r a c t e r i z e d in that its has a grated hold-down guide member (31) made preferably of plastic material arranged above the memberane (21, 30) and able to move off in the material tank (26), poaitive guided by the gas holder (27). (Figures 9 and 11). (24 March, 1982)

21. Device according to Claim 18, c h a r a c t e r i z e d in that to the mantle (9) a hollow piercing needle (10) connected to the discharger orifice of the actuating mechanism (16), breaking through the cover plate (40) of the gas holder (27) on the side towards the actuating mechanism (16) is joined; and the device has a piercing member (32) serving for closing the mantle and for establishing the connection between the gas holder and the material tank which coaprises in its peripheral range a disc (38) fitting in the groove (14) of the mantle (9) or a similar body and a hollow piercing needle (33) extending to the inside of the mantle, which piercing needle (33) is arranged where the seat (36) of the charge arrives when placing the charge (22) into the mantle (9), and the length of the piercing needle (33) is chosen so as to be suitable for piercing the end plate of the gas holder (27), and from the channel (35) of the piercing needle an orifice opens into the seat (36), consequently the passage connecting the gas holder to the material tank is formed by the channel (35) of the piercing needle, by the orifice (34) leading out of the channel, the seat (36), as by the orifice (37) formed in the wall part (26b) of the material tank limiting the seat. whereas the element closing the passage is contituted by the end plate (28) of gas holder (27) to be broken through by piercing needle (33); and that in the material tank (26) a substance (1) having a volume smaller than that of the material tank - of a quantity leaving free a space part (39) in the material tank is contained. (Figures 12 and 13). (24 March, 1982)

22. Device according to Claim 21, c h ar a c t e r i z e d in that the piercing needle (10) of the material tank (26) is eccentrically arranged in the mantle, and in the material tank (26) there is a pipe (41) the upper end of which ends above the bottom plate (26a) of the materal tank (26). (Figures 14 and 15). (24 March, 1982) 23. Device according to Claim 18, c h a r a c t e r i z e d in that the mantle (9) serving for accepting the charge (22) and the head part (43) comprising the actuating mechanise are developed as independent units, connectable, however, to each other, while the mantle (9) is blocked, with an and plate at one end, and is open at the other end, and is developed so as to be suitable for being coupled to the head part (43); the charge (22) is arranged in the mantle (9) so that its end comprising the seat (45) lays towards the head part (43) ; the perfora tion(s) in the wall part of the material tank (27a) containing the seat (45) is (are) enclosed from outside by elastic ring(s) (47); in the wall of the gas holder (27), in the range of the end opposite to the seat (45) arranged in the gas holder (27) perforation(s) (48) is (are) developed which is (are) closed from inside by elastic ring(s) (49) - made expediently of rubber; the piercing needle (53) of the head part (43) fells into the range of the seat (45) and its length (L₁) exceeds the depth of the seat (45) as well as the dimension (L₂) coming to the common thickness of walls (40, 44) transversal to the needle, limiting the seat (45) and there is (are) orifice(s) (54) leading from the channel (53a) of the needle (53) to the seat (45 ); and the passage between the gas holder and the material tank is formed by the channel (53a) of the piercing needle (53), by the side orifice(s) (54) of the needle, as well as by the orifice(s) (46) leading out of the seat (45), whereas the dament closing the passage is constituted by the wall (44) blocking the seat (45). (Figures 16 to 18). (24 March, 1982)

24. Device according to Claim 23, c h a r a c t e r i z e d in that the elastic rings (47, are made of rubber. (24 March, 1982)

25. Device according to Claim 23 or 24, c h a r a c t e r i z e d in that the elastic ring (43) arranged inside the gas holder (27) is welded and/or glued in the range of its upper flange to the inner surface of the wall of gas holder (27). (24 March, 1982)

26. Device according to any of Claims 18 to 25, c h a r a c t e r i z e d in that the seat (36, 45) is closed by a wall (56, 40) on the outer aide, which is expediently colinear with one and pice of the material tank (26). (Figures 9, 12, 14 and 16). (24 March, 1982)

27. Device according to any of Claims 23 to 25, c h a r a c t e r i z e d in that in the material tank (27) under the elastic ring (47) surrounding the seat (45) there is a ring-shaped piston (55) fitting to the inner surface of the material tank (27) to be moved off positively guided by tte gas holder (26). (Figure 18). (24 March, 1982)

28. Device according to any of Claims 1 to

27, c h a r a c t e r i z e d in that the material tank and the gas holder maintain preferably their form and volume (Ouly 27, 1981)

29. Device according to any of Claims 1 to 23, c h a r a c t e r i z e d in that it has a levertype or bayonet mechenism serving for claimping and closing the charge (22) constituted by the material tank and the gas holder and the mantle (9), and/or the piercing element (32) completing the mantle or the like. (24 March, 1982)

30. Device according to any of Claims 19 to

28, c h a r a c t e r i z e d in that for joining up the mantle (9) and the piercing element (32) or/and the mantle (9) and the head part (43), a groove (50) is developed in the range of the end(s) of the mantle (9), whereas on the outer surface of the ring (51) extending from the head part (43) or/and the piercing member (32) a rib (52) fitting into the groove (51) is formed, while the device parts comprising the rib and the groove are made of elastically deforming material, preferably of plastic material. (24 March, 1982)