The Invention is a device for discharging pourable Material froa a closed space by Beans of gas of over-ataospheric pressure which has a aaterial tank, a gas holder, a aantle encasing at least partly the Baterial tank, a piercing needle connected to the aantle and serving for opening the aaterial 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 ara 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 froa the valve to the bottoβ of the tank _* A serious drawback of aerosol devices Is that the carrier substance, the freon-gas — according to the well-established assumptions — has environment damaging and carcineaa 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 accospanied by the riβk of accident (e.g. even when opening eopty tanks, children say be unjured) and they aay be sβlβd only with cylindrical bottles, i.e. they cannot be designed.

The Aaerlcan patent specification No. 3,240,391 relates to an aerosol device in the tank of which a

. u . . ^• •-. .Ϊ*»- is

second tank considerably βaaller than the first one it arranged; the wall of this latter aay be sprayed. Zn the two tanks two kinds of substances - e.g. two constituents of the two-component synthetic resin - aay be contained which by spraying the eαaller tank, βix with each other. Neither thie device is free of the above aentioned general drawbacks of tie aerosol devices.

The subject aatter of- the Aaerican patent specification No. 2.559.091 is similarly an aerosol device. This device has two tank parts to be connected to each other by aeans of threaded joint. The upper tank part is the aaterial tank which has a closing valve and a pipe starting therefroα and extending to the region of the bottom plate of the upper tank part. Zn the lower tank part a cartridge containing coa retted gaa aay be arranged, the aealing of which la 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 aixture suitable for aerosol spraying. By aeans of this device the user hiasβlf can produce the llquleVgas aixture froa 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 gae cartridge, exchange, filling of material, ecrewing in and out of the device components, etc.).

The Aaerican patent specification No. 3.858.65 introduces a fire extingulβher in the external cylindric container of which a βimilerly cylindrical material tank containing the liquid or gas suitable for fire-fighting aay be arranged and the two eleaents aay be air-tightly joined by leans of releasable fastening. A cartridge

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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 Bay flow into the upper part of the material tank. A pips is arranged in the centre line of the material tank, being in connection with the extinguiehing- spraying head piece. The gas makes the estinguishing substance move in the material- tank and the substance jet aay be directed to tte fire. The device aay be -dismembered efter being used, the material tank aay be refilled, the gas cartridge may be exchenged and the device aay be eβsβabled again. The device has a highly complicated channel and aealing aystea, the connection between the bearing body and the aaterial 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 eapty from inside, made of rigid aaterial, and a aaterial tank made of flexible (pliable) aaterial to be arranged in the bearing body, the rigid upper tank part being pierced by a needle. The aaterfe 1 tβnk is pierced by a needle joining the pressing-out or piercing valve. The end oppoβite to the valve of the material tank iβ 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-ataosphsric 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 iβ going down, the flexiba meterial tank is wrinkled. The drawback of this solution consists in that the carrier gas 8τa11 be introduced into the device by a βeparate operation, the sealing of the disc-shaped piston is uncertainβ and after the pressing-out of the substance the bearing body can be relieved from the over-pressure gas in a highly complicated Banner, finally the spray valve can be cleaned only difficultly, by a separate operation.

The Aaerican 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 βpraying 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 uβe, the cover of the device body - compris ing alβo the spraying valve - is removed, the disc of th piston iβ then in its lower end position, whereas its hose is in completely plied state. The substance to be βprayed ie filled from above in the tank and the cover is fastened by the valve, whereas from below a pressuriz gas or gas generating liquid is introduced In the hose. As the substance is consumed the rigid disc of the pisto 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 βhall be always thoroughly cleaned. The Introduction of the gas is cumbersome and so is the deaβratlon 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 βolutions is that - as operating ^* with petroleum derivatives - they cause environment contamina¬ tion, they are Incendiary and presumably have carcinoma producing effect; ao eover, since they are in direct contact with the substance to be sprayed or pressed out, they daceage its consistency and quality, end with some substances, they cannot at all aixed.

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 βiailar purpose, the manufacture and use of which are simple, inexpensiv and the use of which is unobjectionable from sanitary, βafety and environment protection points of view.

The invention is based on the recognition that if the operational process takes place in the aaterial tank itself, no piston mechanism iβ required, the aaterial 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

- -

indiβpensable from safety point of view can be effected without any additional structural part.

On the basis of this recognition the βet 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 eaid seat overlaps the section of the channel; and which has outside the channe a part suitable for receiving the end piece and the end piece is a body made of βlastically 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 elaβtically defor able 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 βprayed and the gas, movable from the channel to the orifice is arranged. In another advantageous eabodiment of the device, in the material tank a hose of increasable volume, serving practically as a piston for leading out the βubβtβnce ie arranged, into the inner space of which the channel joining the gas holder and the material tβnk is connected and the Inner βpace of which channel is separated from the space containing the βubstance in a gas-tight manner. The hose iβ made fully or partly of elaβtically deforming material, or/and of aaterial able to take up permanent ββt or/and - in ite βtate 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 (puβh-button) or a βiailar construction which can be puβhed or pulled against an elastic fores and iβ in operating connection with the valve opening and closing the orifice, and which actuating conetruction has an atomizer in case of substance to be βprayed* According to a further characteristic, the actuating conetruction ie provided with a hollow needle extending into the lnaide of the inner epace 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 compreβiblβ - preferably elastic - material, e.g. a plate is arranged in which a hollow piercing needle

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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 tte point a hollow piercing needle leading into the material tank is embedded, while the passage iβ 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 arranged on the compressible plats. The hoβe fixed in the aaterial 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 materSa tank or at least a predominant part thereof.

A further embodiment of the device according to the invention is characterized in that between the aaterial 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 tte gas holder; in the inside of the mantle, a hollow piercing needle iβ feβtened 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 tte

SUS^ - ^* ^— ----- - ,

plate constitutes the element closing the passage, and that a pipe connected to the orifice of the actuating mechanism is fastened in the inβide of the mantle, which hea a prickling point, arranged in the aaterial tank in the assembled state of the charge and the mantle, and ite point ends in the vicinity of the plate encasing the material tank. With thia βolution, it iβ expedient if the piercing needle iβ 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 aaterial tank a material- ree 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 aaterial tank surrounds in ring shape the gas holder, while the βide 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 βide 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 connectin the inner space, of the gas holder and that of the mater tank. With this solution, it is expedient if from the seat the orifice leads to such a space part of the materi 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 aaterial tank and that the device has a piercing member serving for closing the mantle ae well aβ for eβtabliβhing the connection between the gas holder and the material tank, which comprises a disc seating in the groove of the aantle with itβ peripheral range or a eiailar body and containe 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 aantle end the length of the piercing needle iβ choeen βo aβ to be βuitable for piercing the end plate of gas holder; and from the channel of the piercing needle a βide orifice leads into the βeat, consequently the paeajge connecting the gee holder to the aaterial tank is formed by the channel of the piercing needle, by the orifice formβϊ. 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 aay 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 βide 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 seeting in the groove of the mantle with itβ peripheral range or a eiailar body and containe a hollow

piercing needle extending to the inside of the aantle which iβ arranged where the seat of charge arrives when placing the charge into the mantle and the length of the piercing needle la chosen βo aβ to be suitable for piercing the end plate of gaa holder, and from the channel of the piercing needle an orifice leads into the βeat, 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 βeat as well as by the orifice formed in the wall part of the material tank limiting the eeat, whereas the element closing the paββage is constituted by the end plate of gas holder to be pierced by the piercing needle; and that in the aaterial tank a substance having a volume smaller than that of the aaterial tank - of a quantity leaving free

» a space pert in the aaterial tank - la arranged. The piercing, needle of the material tank is eccentrically arranged in the mantle, and in the aaterial tank there iβ a pipe the upper end of which reaches under the piercing needle at the cover of the material tank, whereas itβ lower and reaches just over the bottom plate of the aaterial tank. It iβ also advantageous if the mantle serving for accepting the charge and the head part containing tte actuating mechanise are developed aβ independent unite connectable, however, to reach other, while the mantle la blocked with end plate at one and, and is open at the other end, and is developed βo as to be suitable for being coupled to the head part; the charge ie arranged In the mantle βo that itβ end comprising the βeat laγa towards the head part; the perforation(β) in the wall part confining the βeat iβ (are) enclosed froa outside by elastic ring(s); in the wall of the gas holder.

* * .-. I & SHEET

in the range of the end opposite to the βeat arranged in the gaa holder perforation(a) iβ (are) developed which la (are) closed froa inβide by elaβtic ring(β) - made expediently of rubber; the piercing needle of the head part falls into the range of the seat and ltβ length exceeds the depth of the seat as well aβ the dimension coming to the common thickness of wal β transversal to the needle, and there iβ (are) oriflca(β) leading from the channel of the needle to the βeet; and the passage between the gaa holder and the material tank iβ formed by the channel of piercing needle, by the aide orifice(β) of the needle as well as by the orificβ(β) leading out of the βeat, whereas the eleaent closing the passage ia constituted by the wall blocking the βeat.

A furttar advantageouβ embodiment of the invention iβ characterized in that the elastic ring8 are made of rubber.*It iβ expedient if the βlaβtic ring arranged inside the gaa holder iβ 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 advantageouβ if the βeat iβ closed by a wall on the outer βide which iβ expediently colinear with one end plate of the aaterial tank. In caae of certain materials it aay be advantageouβ if in the aaterial tank under the elaβtic ring surrounding the seat there iβ a ring-shaped piston fitting to the inner βurface of the material tank to be moved off positively guided by the gas holder. The gas holder and the aaterial tank maintain preferably their fore and volume. It iβ expedient if there iβ e.g. a lever of bayonet mechanism serving for clamping and closing the charge constituted by the material

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tank and the gas holder and the aantle and/or the piercing eleaent completing the mantle or the like. Finally, according to an advantageouβ inventive criterion, for joining up the mantle and the piercing element, and/or the aantle end the head part, a groove Iβ developed in the range of the end(a) of the aantle, whereas on the outer βurface of the ring extending from the head part • or/aήd froa the piercing member a rib fitting into the groove la formed, while the device parts comprising the rib end the groove are made of elestical- ly deforming material, preferably of plaetic material. The invention will be now introduced in more details on the basis of the enclosed drawinga, which contain some advantageous embodiments and structural partial solutions ,of the device. In the drβwingβ

Figure 1 shows an embodiment of the aggregate gas ^' holder and material tank in achβaatic longitudinal section; Figure 2 represents the aantle fitting to the aaterial tank, similarly in longitudinal eection; In Figures 3 and 4 another aabodiaent of the charge constituted by the material tank and gas holder, aβ well aβ the pertaining mantle a ra to be βeen; in Figure 5 the portion A marked in Figure

3 iβ shown in larger scale; Figures 6 end 7 represent a further advent- ageouβ embodiment of the charge and the pertaining aantle; Figure 8 iβ the portion B _, marked in Figure

6, in e larger scale; in Figures 9 and 10 a further advantageouβ

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OMPI

embodiment of the. charge and the pertaining mantle iβ to be βeβn;

Figure 11 represents the clβaping eleaent to be βeeπ in Figure 9, in top view; 5 Figureβ 12 and 13 another embodiment of the charge and the pertaining aantle Iβ illustrated; Figures 14 and 15 show another embodiment of the charge and the pertaining aantle 10 in Figures 16 to 18 another advantageous em¬ bodiment of the device ie illustrate As it ie to be seen in Figure 1, a aaterial tank 2 serves for receiving the bulk aaterial 1 which may be made either of rigid or of elaβtic material, 15 itβ shape may be practically optional, in the present embodiment it is cylindrical. The gaβ space 3 of the gaβ holder marked with reference number 4 iβ βurrounded by a pressure-tight wall 4a. In the gaβ space 3 the gaβ of over-atmospheric pressure 3a, preferably compressed 20 air la to be found. The aaterial tank 2 and the gaβ holder 5 are connected to each other eo aβ to form a unit, they constitute one member. The gas space 3 of the gas holder 4 iβ joined to the aaterial tank 2 by the passage formed by the channel 5 developed in the 25. wall 4a of the gas holder. The channel 5 - which aay be e.g. of circular section - is closed (βealed) by en end piece 6 in the position according to Figure 1, which on piece 6 iβ arranged in the seat 13 overlappin the cross section of the channel, developed similarly 30 in the wall 4a of the gaβ holder 4. In this βeat 13, βidewayβ froa 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 βeat 13,

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formed in the wall 4a, i.e. it extenda βidewayβ therefrom βo that by itβ pulling, the end piece 6 can be moved away into the part outside the passage 6 of the βeat 13, whereby the way of the gaβ 3a aay be rendered free towards the aaterial tank 2 through the channel 5 conatituting the passage.

In caβe of the present embodiment, in the material tank 2 a hose 8 made of elastic aaterial having plied wall in inoperable βtata of the device (according to Figure 1) ia arranged at the bottoa which is connected in a gas-spraying manner to the βurface of the wall 4a of gas holder 4 limiting the material tank 2. The hose 8 iβ compressed in itβ state ahown in Figure 1, its inner space 8 has therefore a minimum volume. The channel 5 'leads directly to the inner βpace 8a, the substance to be discharged 1 iβ arranged above the hoβe 8 in the aaterial tank 2. The hoβe 8 serves for the separation froa 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'Bade of pressure-tight, elaβtically deforming material, where¬ as itβ form correβpondβ to the form of the material tank 2, i.e. In the present case it is cylindrical. In the rβnge of the lower end of the wall of mantle 9 a groove 14 running around at the bottoa iβ made. At the upper part of the gaβ 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 gaβ holder

--.OMPI_

and material tank.

In the upper end - oppoβite to the groove 14 - of the aantle 9 the actuating mechanism marked as a whole with reference number 16 lβ arranged, to the atomizer 11 of which the needle 10 extending into the inβide of the mantle 9, and having an inner hollow 10a iβ connected. For spraying the eubstance, the orific 17 iβ foreseen, which can be brought into contact with the atomizer 11 by means of key 12 to be pressed againβt the force of spring 12a.

The operation of the device according to Figures 1 and 2 iβ aβ follows:

The unit conβtituted by the aaterial tank 2 and the gee holder 4 - which may contain the eoβt differ substances 1 - iβ introduced into the aantle 9, the inne diameter D _£ of which iβ somewhat larger than the outer diameter D-. of the material tank. In the course of this operation, the needle 10 pierces the end plate 2a of th tank 2, whereas the flange 15 of the gaβ holder 4 clickβ to the groove 14 of the mantle 9. Thereby the device iβ in assembled atate but iβ not yet operable. The device becomes operable if the user.removes the end piece 6 from the βection of the passage formed by the channel 5 by pulling out the handle 7. The end piece 6 getβ in the left pert of the βeat 13 - outside the βection of the channel 5 - and the end piece iβ 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 βir 3a flows from the space 3 into the space 8a and - whithout contacting the βubβtance - exerts a pressure to the βubβtance 1. If the user of the device presses now the key 12, the βubβtance 1 arrive through the hollow 10a of the needle 10 into the atomizer

II and - in a manner known by itself - getβ into the open

SUB3T_TIT.E SHZET O.ttPI W1PO

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 aeans of the compressed air 3a. As the βubβtance 1 la consumed froa the material tank 2 during tte uβe, the space 2a increases more and more, and when the βubβtance 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 flowin out at high speed practically cleans the needle 10 - and the hollow 10a thereof, too - in one operation, .so to sa automatically, on the other hand, so that no substance reπains in the device. Therefore, the device following the removal of the msterial tank 2 is suitable without additional cleaning for the spray of other substance, ie the βaae mantle 9 can be used combined with material tan 2 containing different substance 1. The alreedy described structural parts of the device shown in Figures 3 to 5 are marked with the alrea used reference numbers. With this solution, the wall 4a of the gas holder 4 fitting to the retentive aaterial tank 2 iβ 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 plaatic material. Above the hole 5a, a piercing needle 19 is embedded in

SUBST:T 7Ξ S ' ZT

the elastic plate 20 the lower and of which does not reach the lower surface of the elastic plate 20. The plata thickness x, to be seen in Figure 5 iβ chosen βo that the pressure of the gas 3a in the gas space cannot press this plate part against the piercing needle 19. Aβ it iβ to be βeen similarly in Figure 5, a passing hols (channel) 19a iβ made in the piercing needle 19 and the piercing needle 19 iβ embedded by itβ campling flange 19b in the eheet 18 - made expediently of rigid aaterial - which bears against the elastic end plate 20, and iβ, preferably constituting one unit therewith, developed together with the gas holder 4 beneeth them and the aaterial tank 2 above them. In the lower part of the material tank 2 a membrane 21 oade of gas-tight aaterial, e.g. of rubber or piestic aaterial iβ fixed (marked by dotted line in Figure 3) which iβ able to elongate to βuch an extent that it can fill.the whole inre r apace or at leaβt the aoβt part of the inner βpace of the aaterial tank 2 without being torn. According to those said above, the plβte 20 functions as the closing eleaent 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 Figureβ 3 to 5 iβ as follows:

The charge to be seen in Figure 3, marked as a whole with reference number 22 - the retentive materia tank 2 of which is fil led with the βubβtence 1 to be βprayed - is arranged in the aantle 9, the inner βpace of which iβ completely taken up by the charge 22 in case of the present embodiment. The charge iβ inserted in the aantle - and in the meantime the flange 15 of the gaβ holder 4 is clicked in the groove 14 of the mantle 9 - by means of some lever-type or similar

cloβing mechanism (not shown in the Figure) which mechanism pulls the man e onto the charge by a force great enough to make the piercing needle 9 breek the wall section 20a of thickneas of the elastic plate 20. In thiβ way, the gas 3a can flow through the paβββge constituted by the hole 5a and the channel 19a of the piercing needle into the space 2a behind the membrane 21 of the aaterial 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 aaterial quality and thickness of the elaβtic end plate 20 shall be chosen βo 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 en even increasing degree end finally - when the substance 1 is completely consumed from the tank 2 - it reachea 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 iβ βimilar to that of the device accordin to Figures 3 to 5, the gas holder 4 and the material tan 2 constitute a charge 22 also in this case. Even in thiβ cese,between the gas holder 4 end the aaterial tank 2 an elastic end plate 20 iβ arranged which covers the hole 5 in the well 4a of the gas holder 4. With thiβ solution, no elongating membrane is in the material tank 2, the

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mantle 9, in turn, ie developed contrary to that according to Figurββ 2 and 4, inasmuch as the piercing needle 23 containing the channel 23a, establishing the connection between the gaβ holder and the aaterial tank la fastened in the inβide of the mantle and falls into the longitudinal geometrical centre line of the mantle. In the lnβide of the piercing needle a hole (chennel) iβ, of course, made. In the upper part, near the head part 9b of the mantle 9, a side orifice 24 openβ from the channel of the piercing needle 23 (βeβ alβo 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 iβ eccentrically arranged and to its outlet a pipe 25 is connected the length h~ of which is chosen eo that it ends directly above' the end plate 20 in a point 25a (Figure 7). In thiβ embodiment, the passage connecting the gaa holder and the material tank in operating position iβ constituted by the hole 5a, the channel 23a of the piercing needle 23 aβ well aβ by the orifice 24, whereas as an element closing the passage in out-of-opβration state of -the device the plate 20 functions. The βubβtance 1 to be βprayβd fi lβ the aaterial tank 2 expediently not fully but only up to the level v (Figure 6) βo that above the liquid mass a gaβ βpace 2a remains.

The device according to Figures 6 to 8 iβ 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 pla e 20, whereby through the chennel 23a of the piercing needle .23 and

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the aide orifice 24 a connection iβ established betwee the gee βpace 3 of the gas holder 4 and the aaterial tank 2, namely βo thet the gaβ arrives in the epace 2a above the substance 1 to be sprayed (βee Figure 6). Th gaβ exerts a pressure froa above onto the liquid of h _, level βo 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 βubstance 1 being consumed,the mechanism.16 la actuated aa lon 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 gaa holder 27 iβ arranged above the bottom plate 26a of the material tank at a distance y_ βo that beneath the bottoa plate 28 a seat 36 is formed To the lower end of the circular material tank 26 a membrane 30 of elastic (expansible) aaterial iβ fastened in the ineide aroun above which along the tank a slidable grated hold-down plate 31 ie located; the conetruction thereof iβ 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

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to the mantle 9 and the βaid 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 machaniβm 16 (Figure 10) iβ. eccentrically arranged and therefrom a hollow piercing beedle 10 extending downwards projects in a point where it iβ covered by the cover 29 of the gee holder 26 (Figure 9) •

In the embodiment according to Figures 9 to 11 the pasβage connecting the gaβ holder and the materia tank iβ constituted according to those said above by the channel 35 of the piercing needle 33, ita side orifice 34, the seat 36 as well as the hole 37 (Figure 9), aβ 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 βo that the needle 10 pierces the cover 29 of the aaterial tank 26, whereby a connection ia established between the inner βpace of the aaterial tank 26 end the atomizer 11; the βubβtance 1 to be sprayed but being not yet - of course - under preββure cannot eβcape from the tank, eve 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-cloβing 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 βeat 36 (Figure 9) and froa there through the orifice 37 into the space 30a beneath the membrane 30 and in thiβ 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.pressi g down the push-button 12 of the actuating mechanism 16 the eubβtance 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 reaovel of the piercing member 32 the empty charge 22 can be remove 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 deβcribed manner.

The device shown in Figures 12 and 13 deviates from the device βccording to Figureβ 9 to 11 only inasmu as ho 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 uβed reference numbers. The level v. of the liquid to be spray iβ under the cover 29 in the aaterial tank 26 ao that ha a βpace 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 aantle 9 and by thiβ operation the piercing needle 10 enters thro

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the cover 30 into the gas space. In this way a connection iβ established between the inside of the gas holder 27 and the atomizer 11, aβ long aβ, however, the push-button 12 is not pressed down the gas 3a remainsin the closed system.

In the next step the piercing member 32 iβ arranged - i.e. βtretched and cloaed - in a way described already in connection with Figures 9 to

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

27. Thereby a connection iβ 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 βeat 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 oppoβite direction, ao that froa thiβ aoment the βpace βerving originally aa gaβ βpace iβ filled by the liquid to which the preββure of the gaa being in the βpace 39 exerts itβ effect. When not the push-button 12 iβ preββed down, the liquid beig under the preββure of the gaa being in the βpace part 39 may be forwarded through the atomizer 11 and the orifice 17 to itβ place of destination, hen the liquid iβ conβuaed, the gas is let out into the open by the actuation of the push-butto

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

The device according to Figures 14 and 15 differs froa that according to Figures 12 and 13 only in as auch aβ the piercing needle 10 of the material ta iβ eccentrically arranged aa in case of the aantle

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according to Figure 10 and - aβ 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 alighβ with the piercing needle 10 when arranging the charge 22 in the mantle 9, whereas itβ lower end iβ in the vicinity of the tank bottom 26a. This devices operates in such a manner that when the charge is located in the aantle the piercing needle 33 breaks through the wall 56 of the βeat and the bottom plate 28of the gas holder, whereas the piercing needle 10 the cover plate 29 of the material tank βo that it penetrates in the pipe hole 42. By actuating the push¬ button 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 aantle 9 and the head part marked as a whole with reference number 43. The charge 22 differe from that shown in Figure 12 in that in the extension of one and of the g holder 27 a closed βeat 45 limited by the wall 44, by the end plate 40 and by e.g. the cylindrical wall part 27 is foreβeen and in the cylindrical wall part 27a perforations 46 are made, closed froa outβide by an elastic ring 47. This ring is expediently aade of rubber and when the device iβ 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 froa inside; this latter is also aade expedientl

of rubber and along itβ 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 ββat 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 • oppoβite to the latter it is open and on the inner βurfaca 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 fitβ in the groove 50 of the mantle 9. The head part 43 and the aantle 9, or at least the parts comprising the groove 50, and the rib 52, respectively, are made of eladtically deforming plaatic material, so that when clicking to each otehr the groove 50 and the rib 52 a tight connection may be established between the aantle 9 and the head part 43. As a matter of couree, any other connecting mechaniam iβ 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 iβ arranged in the mantle 9, the needlepenetrate into the seat 45 (Figure 16). The length L, of the needle 53 exceeds the common length L- 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 βeat 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

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the charge 22, the mantle 9 and the head part 43 join with each other.

The operation of the device according to Figureβ 16 to 18 iβ 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 aantle 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 inβide of the gaβ holder 27 since . > L« (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 βide 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 βubstance 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 aaterial tank 26 is naaeϊ/ not full with substance, in starting position its level was marked with v., which means that in the aaterial 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,

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cleaning simultaneously the channel 53a, the atomizer

11 and the orifice 17, while the βubβtance 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 βubstance 1 is consumed. Since the gas pressure does not fall under the pressuie of the βubstanca coming into the βeat 45, the rubber ring 47 doeβ not displace during the operation. With this embodiment, the connecting passage iβ constituted - according to those said above,- by the orificeβ 46, the channel 53a of the needle 53, the orificeβ 54 leading out thereof, as well as the orificeβ 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 aaterial tank 26 e.g. a disc-like piston 55 pressing againβt the inn surface of the wall in the peripheral range above the substance 1 may be also arranged and this piston separ the carrier gas and the substance to be sprayed. While the βubβtance 1 is consumed, the piston 55 moves, of course, downwerds in the tank.

The advantageouβ 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 fr carrier gas, having the same purpose. According to the invention, the gas holder - material tank - mantle fro together the device, whereby - following from the βolution - 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 aβ long as the protective aantle ensures the

preβsurβ-tightness, and contains the actuating mecheniβm - and the spray head, if required. The device according to the invention ie highly advantageouβ from the point of view, too, that the residues of the subs ance to be led out (to be βprayed, and pressed out, respectively) cannot remain in the device βince the complete process occureβ 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 eβcaping gaa at the deaeration - aβ a consequence of the construction of the device. No separate air escape valve iβ needed for the deaeration (βafety 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, βince the use of petroleum derivative iβ not needed; there is no risk of accident. The tube of the device- may practica ly be optionally designed, itβ structural material aay be variouβ (plastic material, steel, aluminium, etc.). The device may be rendered auitable also for double operation. Thia aeane that in the βaaβ protective aantle simultaneously a tank group containing several kinds of βubβtances 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 divide device may be used aleo for making cream. The device la structurally simple, and suitable for mass production. The invention is not restricted, of courβe, to the above introduced embodiments, but within the βcope of protection defined by the claimβ it may be ralized in several ways. Such an embodiment is e.g. conceivable in which no hose 8 iβ available but - if the properties of the substance 1 render iβ possible -

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by removing the end piece 6 the compressed air 3a - or other gee of over-atmospheric preββure - effects directly ^*" the substance 1 which is then pressed by the over-preβsure gas cushion practically aβ a gaa piβton towardβ the orifice 17. Several possibilities are avails- able alβo for the development of the hoae 8: the wrinkling the hoβe iβ not absolutely necessary, if ita material ia 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 thiβ 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 subβtancββ of various consistency, βuch a liquids of different denβity* powdere, etc. According to the above embodiments shown by way of example the βubβtance iβ discharged by atomizatio ^' n, but the device, is suitable also for discharging the substance in jet - for simple pressing out - the atomization iβ not absolutely necessary. The joining of the mantle and the other unit can be ralizβd in addition to the groove-flange-clicking method by any other structural method. Several other deviations are conceivable without exceeding the scope of pro- tection defined by the claims.

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