MXPA97005059A - Vendor for me - Google Patents

Abstract

The present invention relates to a media dispenser comprising: a first base unit that operationally limits a chamber containing a medium, which operatively defines a pressure within the chamber, a second base unit, connected to the first base unit, a conduit for conducting the medium with an end having an outlet hole for the medium on the second base unit, a duct that is derived from the middle conduit, and communicates operatively with the chamber, to compensate the pressure of the chamber inside the chamber, a closure, to close the duct of medium near the outlet of the medium against the entry of contaminants, the closure is transferable between an open position and a closed position, and a barrier annular for microbes, located in the fluid duct to prevent microbial contamination of the medium contained inside the dispenser, the dispenser extends along a long axis al, and the microbial barrier rests transverse to the longitudinal axis of the

Description

VENDOR FOR MEDIUM The present invention relates to a dispenser of fluid medium. With said dispenser, fluid media can be distributed or dispensed through a fluid medium outlet, in which the fluid medium can have its last contact with the dispenser. Said dispensers functionally have a fluid medium conduit and a fluid conduit, which can be constituted by independent conduits such as conduits or the like. In contrast to substantially large fluid medium chambers, they can constitute substantially narrower fluid medium chambers. The remaining fluid medium chambers may be provided for the storage of the fluid medium, such as pressure chambers to generate a dispensing pressure or the like. They can be connected at the inlet and / or outlet in a fluid medium conduit. They serve to fill and discharge the fluid medium chamber when the dispenser is operated. In a particularly functional manner, the fluid conduit is provided independently of the fluid medium conduit. In case of a pressure equilibrium of a fluid medium chamber it is possible for the fluid to pass through said fluid conduit in the opposite direction to the fluid medium conduit. The fluid, such as atmospheric air, circulates towards the chamber of fluid medium in the event that it has generated a depression by emptying, change the temperature or the like. The fluid supply can easily cause contamination of the fluid medium by germs. Such aeration ducts are consequently functionally driven exclusively through a germ filter or the like to sterilize the air circulating through the filter. In spite of this, it is possible for germs to also enter the device in the area of the fluid medium outlet along the fluid medium conduit, possibly to the fluid medium chamber. The above produces a germ infection and consequently the deterioration of the fluid medium, as well as the use of the dispenser. The foregoing can be counteracted by closing means provided in the outlet of fluid medium, which are suitable to constitute in a closed state a means of blocking germs. Accordingly, the present invention has the purpose of providing a dispenser or a dispensing device, in which the known disadvantages of the known construction modalities are avoided or the use of only a means of blocking in the outlet of fluid medium or only means for blocking germs in the fluid conduit, said dispenser or dispensing device, in particular, having a simple construction, highly secure combined functions of the blocking means.

Inventively both a means for blocking germs for the exit, as well as a means for blocking germs for the fluid conduit are provided. In case the dispenser has two moving units for moving a fluid dispersing device against each other or if it is constituted by two units of this type, a blocking means is functionally arranged in one of said units and the another locking means in the other unit. Both locking means together with the dispersing device drive perform antagonistic and synchronous movements. The fluid medium outlet, particularly a spray nozzle, is functionally constituted by the outer end of a short nozzle duct. The inner end of said nozzle ducting may be directly connected to a conical widening or the like. The nozzle functionally constitutes the closing surface of the corresponding blocking means. Against said closing surface a movable closure member can seat in the closed position. Both sealing surfaces advantageously only linearly or annularly against each other. In this way extremely short trajectories are ensured to prevent the spread of germs, achieving high closing or superficial pressures. Even in the case of arranging sealing surfaces that do not yield elastically, an airtight seal is ensured. The nozzle ducting constitutes with its end the outlet of fluid medium and is delimited in a single piece. Upstream with respect to the closing surface, both the nozzle ducting and the movable blocking member of the blocking means can be staggered one or more times. In this way it is possible for the closure member to be guided directly in the nozzle duct only through a partial axial distance of its opening or closing movement. The mutually sliding and at rest surfaces can constitute in the closing position an additional means for blocking germs. Said blocking means is continued upstream directly on the closing surfaces mutually in contact in the axial direction. Said blocking means releases the passage for the fluid medium only after a first partial path of the opening stroke of the closing member. During the closing movement, the closing member extrudes the fluid medium out of the nozzle duct via the fluid outlet in a pulsatile manner in the manner of a pump piston. In this way, the nozzle line is completely emptied between the end of the closing piston and the outlet of the fluid medium due to the inertia of the mass of the accelerated fluid medium. The residual fluid medium found in this area is expelled outwards under spraying. The means for blocking germs for the fluid conduit can be constituted according to German patent application published DE-OS 35 03 354, to which reference will be made regarding other characteristics and effects to be incorporated in the present application. Said blocking means may also be functionally constituted according to German patent application 196 10 457.2, to which reference is expressly made for the same reasons. Both drive units to move against each other are advantageously provided with a detachment lock to form another insurance against the penetration of germs. The lock prevents or hinders sufficiently a detachment of both units. A locking element of said lock is advantageously constituted by a linker, such as a gofrabie ring, which surrounds other component parts or fixes them thereon. The latch is far away from the end of the latch that is upstream. The locking member may be arranged on the outer periphery of the crimping or be effective with it at a distance from said outer periphery. It materializes in a particularly simple manner when it is formed by a process of deformation by bending or embossing the end of the setting, which is constituted by a material, for example metallic, relatively soft. By means of the detachment lock, it is prevented that a locking means arranged in the connection between the units, for example in the piston rod, can be opened accidentally.

It is also advantageous when said crimping delimits with its inner peripheral surface the fluid conduit. In this way the corresponding means for blocking germs can be completely enclosed within the setting. The fluid inlets can be delimited in mutual axial separation by the setting. They can be found on one or both ends of the crimping inside a housing of the drive unit, which has the fluid medium outlet. As regards the configuration of the dispenser or of the respective blocking means or of the respective closures, reference is made to the following documents to incorporate the characteristics and effects in the present application: DE-OS 33 15 334, DE -OS 41 10 302, DE-OS 41 10 304, DE-OS 44 03 755, DE-OS 44 41 263, German patent applications, 196 06 701.4, 196 06 702.2, 196 06 703.0, 196 05 153.3, as well as DE-OS 44 17 488 and DE-OS 44 03 755. A particularly effective spraying, as well as a very effective emptying of the nozzle ducting is achieved when, following the fluid medium pump, for example an reciprocating pump, a second pumping stage, particularly a pump, has been connected. of bellows. In this last pump the fluid medium is accelerated again after leaving the fluid medium pump by means of a decrease in the volume of the pressure chamber. The pressure chambers of the fluid medium pump and the additional pumping stage are compressed simultaneously. The jacket of the pressure chamber of the pumping stage can be constituted by a recovery spring; by way of example for the means for blocking germs or closing the pump outlet or the corresponding end of the recovery spring may be coupled directly or in one piece with a control piston of the outlet closing means. In this way a very compact construction is obtained. These component elements, as well as the securing means of the recovery cut or the like, can be substantially completely contained within a waste nozzle. At the end of said nozzle, which is upstream, protrude transverse faces for the manual operation of the dispenser by application of pressure with respect to its outer peripheral surface. The tubing is intended to be introduced into an opening in the human body, such as a nasal opening.

These and other characteristics arise, in addition to the clauses, also from the description and the drawings, the different characteristics being able to be materialized in each case by themselves or several in the form of sub-combinations in one embodiment of the present invention and in others fields, representing advantageous modalities of realization that are protectable by themselves, for which protection is claimed. The subdivision of the present invention into individual sections, as well as intermediate subtitles, do not limit the exposures made below them in their generality.

Summary description of the drawings The accompanying drawings are illustrated in the embodiments of the present invention, which will be described in more detail below. In the same: Figure 1 illustrates a dispenser in axial section. Figure 2 illustrates another embodiment of a dispenser. Figure 3 illustrates another embodiment of the closure member. Figure 4 illustrates a construction body of the dispenser according to Figure 2 and 3.

Figure 5 illustrates a cutout of Figure 1 to 3 in an enlarged scale representation. Figure 6 illustrates another embodiment of a dispenser in an angled, perspective representation of different component parts. Figure 7 illustrates a component part of the dispenser according to Figure 6 in a partially cut-away view. The device 1 has two units 2, 3, the same being mounted in a mutually displaceable manner for the dispensing movement under shortening of the dispenser 1. When releasing the driving force, said units move in the opposite direction towards the initial position illustrated in FIG. 1 by means of a spring. Unit 2 comprises a reservoir in the form of a container 4 with a tapered neck 5, on which is mounted axially an alternative piston pump 6, which sucks the fluid medium from the belly of the reservoir. The pump 6 only partially penetrates, however with "most of its length in the reservoir rigidly 4. On the end face or front of the neck 5 the pump 6 is seated by an annular projecting flange 7 in a watertight manner and prestressed by the interposition of a joint 8. For axial pretension and as protection of the firm connection between reservoir 4 and pump 6 a crimp 9 is provided, namely a gofrable ring made of soft metal. All the aforementioned component parts are on a common axis 10. The pump 6 has a drive rod 11, which protrudes axially from the main body, namely the pump casing 12, outside the reservoir 4. the unit 3 is linked firmly with the rod 11. Said member 11 carries within the housing 12 a pump piston, which delimits a pumping or pressure chamber on its front face. The actuating movement compresses the pressure chamber and the fluid medium contained therein is expelled through the hollow interior of the rod 11 in the unit 3. An outlet valve can be provided inside the housing 12 which opens and closes again depending on the function of the stroke pressure, provided by way of example in the displaceable piston unit. The fluid medium flows in the outlet direction accordingly only upon reaching a predetermined pressure in the pump chamber. However, the outlet pipe of the pump can also be permanently open without a valve from the pump chamber to the pump outlet opening, which is disposed at the front end face of the rod 11. During the return stroke of the pump. the pump is sucked fluid medium through the end of the casing 12, which is inside the reservoir 4, or a sleeve shaped davit, namely through an inlet valve that closes during the pumping stroke. The bodies 4, 8, 9, 12 constitute in operation a rigid unit, as well as preassembled. On this unit the unit 3 will be mounted by an axial movement that reaches a stop position. The unit 3 presents a main body 13 in one piece which partially or completely covers a housing 14 and / or a nozzle 15 the parts 5 to 9, 11, 12 in any position by its outer periphery. The cap-shaped housing 14 has a skirt that is freely protruding in the opposite direction to the outlet. Said skirt surrounds the mentioned component parts, being able to be guided with play by the outer periphery of the crimp 9 in radial direction with play. Distally with respect to the end of the casing 12, which is outside the reservoir 4 and faces that end, the casing 14 has a front wall that is continued directly in the cap sleeve radially inward. The cap skirt does not protrude towards the outside with respect to said front wall. Said outer face constitutes on either side immediately adjacent or around the nozzle 15 a shoulder or handle 16 for the user to support his finger during the actuation, the thumb of the user being able to be supported on the bottom away from the reservoir 4. With This measure can be held by the handler with one hand and be simultaneously actuated. The nozzle 15 has a greater length with respect to the housing 14, being also reduced in width and continuing in one piece in the front hood wall of the housing 14. The nozzle 15 is tapered towards its free end and constitutes on its face free extreme to a fluid outlet 17, in which the fluid medium of the dispenser 1 is completely detached during the dispensing. Inside the housing 14, as well as the nozzle 15, a sealed coupling 18 is provided, which serves for the rigid connection in the axial direction, however freely rotatable, between the unit 3 and the rod 11 of the plunger unit. The coupling 18 constitutes during the piston stroke immediately after leaving the initial position also the only connection between the units 2 and 3, as well as a blocking against the penetration of germs in the fluid medium conduit. Each of the component parts 13 to 18 can also be arranged on the axis 10. The dispenser 1 is suitable for the dispensing of liquid, powdery, pasty, gaseous or similar media. The medium must be applied with the waste as a cosmetic, pharmaceutical, technical or similar active substance. To charge, as well as to channel the fluid during the waste and the recharge, fluid chambers have been provided, these being constituted by the storage chamber of the reservoir 4, the pumping chamber and all those chambers whose delimiting walls come into contact with the fluid medium during operation. Said fluid medium chambers constitute from the pump chamber to outlet 17 a fluid medium conduit in the form of mutually coupled channel sections. The latter are narrowed in cross section with respect to the storage chamber and the pumping chamber and are inside the unit 3. Additionally, a fluid conduit 21 is provided, independently of the conduit 20, which constitutes in this case a channeling communication between the storage chamber 19 and the atmospheric air that surrounds externally the device 1. The communication channel is connected to the chamber 19, namely dodging the interior of the housing 12, through the opening of the neck and In the case of crimping 9. The fluid is therefore air in this case, but it can also be another fluid, which must be the same to compensate variations in the pressure prevailing in the chamber 19 with respect to the atmospheric pressure. Such variations are manifested as depressions, particularly when a volume of waste of the chamber 19 is sucked within a very short interval towards the pumping chamber. Subsequently, said depression increases again for a time several times greater than that mentioned above, sucking air in a strongly strangulated form through the unit 3 and the conduit 21.

In the outlet area 17 or the front wall passed through it, a means for blocking germs 22 is arranged, which prevents during the resting times of device 1 that the germs that are contained in atmospheric air can be deposit at the end of the nozzle 15 in the area of the opening 17 and can penetrate into the interior of the conduit 20. The blocking means 22 is embodied as a mechanical blocking or as a means for closing the canalization. The blocking means 22 is open during the exit of the fluid medium through the outlet 17. The blocking means 22 closes immediately at the end of said wastage. Another means of clumping germs 23 that is similarly effective is provided for conduit 21, however, the latter only acting as a germ filter. The locking means 23 is arranged between the flange 7 and the end face of the neck 5, completely inside the crimp 999 and the cap 14, namely in an annular zone around the axis 10 and around the housing 12. The means of Lock 23 closes tightly and tightly at the neck end. Inside the tubular nozzle 15 is arranged a control or slide body 24 contained entirely within it and displaceable axially through only a few tenths of a millimeter. The slide 224 is delimited in its starting and closing position by means of stops and is in the direction of the axis 10. The end of the slide 24 (which is rigid and is formed in one piece), facing the exit 17 constitutes a cylindrical valve member 25 with a flat end face perpendicular also through the plunger bottom, opening into the annular chamber delimited by the plunger 27. The duct 31 is completely delimited on its periphery by the slide 24 from the bottom from piston to the retainer 28. The channel 31 is open upstream from the retainer 28 on the side or on its outer peripheral surface of the slide 24. The slide is encircled in this area by a recovery spring or valve spring 29. The spring is rigidly connected by its end that is upstream in the unit 3 and seated by its end that is downstream inside the retainer 28 in the slide 24. The helical spring 29 elastically contrasts the slide 24 to the position of closing, the parts 25 to 28 of the slide 28 being constituted by a piece. The spring 29 holds the organ 25 in the closed position under pretension. In the nozzle 15 it is rigidly inserted by the open end, which is upstream, of the unit 3 or of the housing 14, said body 30 being completely inside the body 13. The body 30 is fixed only by the inner periphery of the body. the inner sleeve 32 of the nozzle 15. For this purpose, the body 30 has an enlarged jacket or segment 33. The segment 33 engages with the housing 14 continuing axially in the peripheral inner sleeve of the sleeve 32, limited by stops, to It is known to have only a partial length of the nozzle 15. Said inner peripheral surface also constitutes the sliding surface for the plunger 27. In the jacket 33, a portion or sleeve 34 of the body 30 is continued in the exit direction, which protrudes freely . The sleeve 34 does not contact the sleeve 32. The sleeve 34 is a small gap with respect to the bottom of the plunger 27 and surrounds the corresponding portion of the shank 26, the duct 31 and the spring 29, which is within the front wall of the segment 33 is directly on the body 30. The retainer 28 is slidably guided by the inner peripheral surface of the sleeve 30. The body 30 constitutes a coupling member 35 of the coupling 18. The member 35 is sleeve-shaped and is connected to the body 30. it meets with radial separation inside the sleeve 33. The member 35 encloses tightly the end portion of the rod 11, making a stop against it. The member 35 constitutes the connection between the units 2 and 3 and delimits the segment of the conduit 20 that is continued from the rod 11. Between the organs 33 and 35 that are mutually arranged in the form of a sleeve, an annular chamber is delimited which is connected with the inside of the housing 14 and the conduit 21. Said annular chamber is connected through a conduit 36 with that annular chamber in which the pistons 27, 28 are located and which is delimited by the inner peripheral surface of the sleeve 32 and the outer peripheral surface of the jacket 34. The narrow axial channel 36 constitutes the only external communication to said annular chamber. The fluid medium does not flow through said annular chamber. The position changes of the slide 24 do not consequently cause noticeable variations of pressure in said annular chamber. In the transition zone between the members 25, 26, a swirling or turning device 37 is provided, which imparts to the fluid medium flowing along the outer peripheral surface of the peg 26 in the output direction a movement of rotation with respect to the axis of the outlet 17 and of the organ 25. Said rotary current is continued during the waste to the outlet 27. The annular living flank flanked at right angles between the outer peripheral surface and the end face of the organ 25 sits in a annular valve seat 28 inside the front wall 33 of the nozzle 15. On said seat 38 sits the annular edge provided as a closing surface, in the closed position, only under the pretension of the compression spring 29. The outlet 17 is formed at the outer end of a cylindrical pipe 39, which can be terminated at a sharp angle at the outer front face of the front wall 43, namely in the region of a depression of said front face. In this way a sharp edge of fillet breakage is obtained for the pulverizing detachment of the fluid medium at the outlet 17. The length of the nozzle duct 39 is at most as large as its diameter, which imports less than 4 tenths or more. one tenth of a millimeter. Said length can also be less than half of said diameter. The inner end of the conduit 39 is continued in a channel portion 40 that widens conically downstream. The hooked end of the pipe 40 is continued upstream immediately into a cylindrical pipe portion. On said cylindrical portion the organ 25 with its outer peripheral surface slides in a sealed manner. The transition from the cylinder to the segment 40 is constituted by the seat 38. The cylinder is shorter with respect to its diameter or half its diameter. It is continued at its upstream end in a conically widened channel portion 41, which surrounds the organ 25 on its outer peripheral surface in any position, being traversed by said organ 25. The conical portion 41 is located within an annular shoulder 42, which protrudes freely with respect to the inner front face of the front wall 43. The front surface which is upstream of the ring 42 is in the closed position with a small gap with respect to the defined front face between the members 25 and 26. In this way, the closing position on the seat 38 is not impeded. The swirling device 37 can also be formed by a depression or a profiled portion and be arranged on the shoulder surface defined between the organs. 25 and 26. The depression can be continued on the outer peripheral surface of the spigot 27 and confer to the fluid medium an rotation to the segment 41. The outer diameter of the organ 25 is at most four or three times as large as the diameter of the nozzle opening 17 and at most half as large as the outer diameter of the spigot segment 26 that it continues in this one. Along the outer peripheral surface of said spigot segment 26 channels 44 of the conduit 20 are provided. The channels 44 are delimited by the inner peripheral surface of the sleeve 32., as by the outer peripheral surfaces of the segments 26, 42. In this way the channels 44 are permanently connected to the widening 41 as well as to the device 37. The longitudinal channels 44 communicate the inner annular chamber of the plunger 27 with the valve seat 38. The closing surfaces of the valve 22 have only one linear contact with each other. The closing surfaces, however, are extended up to the extension 41, namely by the sealing faces which are continued upstream in cylindrical form. The channels 44 can be formed by grooves provided in the inner peripheral surface of the sleeve 32, continuing in an annular shoulder 45, which protrudes freely upstream in the annular chamber or piston 27. In this way sections are also obtained in this area relatively narrow cross-sectional channels which remain narrow to the outlet 17. The cross sections are substantially smaller than the flow cross-section of the channel 31 or the organ 35. The segment of the spigot 26 can be provided on its outer peripheral surface with a flattening that extends to the organ 25, with depressions 47 that are spaced apart from the organ 25 or the like. In this way the swirling of the fluid medium as it passes through this area is further improved.

The gofrable ring 9 in one piece has two longitudinal segments 48, 49 of different diameters which are continued one with another. The segments 48 and 49 are mutually connected through a front wall in the form of a washer. In the same way as said front wall, the segments 48, 49 have a constant wall thickness. The larger diameter cap-shaped segment 48 serves to press the flange 7 against the front face of the neck 5. Said front face may also be constituted by an axial annular shoulder provided at the end of the neck, flush directly with the peripheral surface Inner part of the neck 5. The segment 48 bears with its front wall on the annular front face of the flange 7. The segment 48 seats with an end collar angularly inwardly glued to an opposite heel of the peripheral surface of the neck 5. Towards the FIG. 1 shows the position of the assembled, embossed and axially fixed ring, whereas towards the left of said figure the position prior to embossing and after the positioning of the ring 9 in the upstream direction has been illustrated. In this position the inner peripheral surface of the segment 48 seats with small spacing on the outer peripheral surface of an annular shoulder of the neck 5, which protrudes radially outwards. The annular rim defines the bead surface for the embossable ring 9. The segment 49, which is continued downstream by the inner peripheral edge of the front wall of the segment 48 and which is also cylindrical, surrounds the housing part 12. , which protrudes outwardly above the flange 9 of the neck 5. Said part is constituted by a lid independent of the housing 12, which is firmly mounted and through which the rod 11 slides in a guided manner. 49 surrounds the housing cap to its end face on the outer peripheral surface, through which the rod 11 passes, in particular in a narrow but non-watertight manner. In this manner, the conduit 21 is delimited in the form of an interstice by the inner peripheral surface of the segment 49 and by the outer peripheral surface of said housing portion. The conduit 21 can also be delimited in the form of an interstice by the outer peripheral surface of the annular neck flange and by the inner peripheral surface of the segment 48. In this way, it is possible for air to penetrate into the chamber at both ends of the embossable ring 9. flared annular housing the component parts 7 and 8. From said annular chamber the air passes only through the blocking means 23 towards the chamber 19. The units 2 and 3, as well as the germ blocking means of the coupling 18, are locked by means of an arrangement 50 capable of preventing them from being disarmed in the opposite direction to the drive and being detached from each other. The release lock 50 is completely inside the unit 3 and the housing 14, namely upstream in a spaced apart manner with respect to its front hood wall. The release latch 50 sits on the outer peripheral surface of the protruding lid of the housing 12, approximately in the center between the flange 7 and the front hood wall of the housing 14. A latching member 51 is formed by an embossed ring, namely the end which is downstream of the segment 49. Said end is bent with cross section outwards at an angle greater than 90 ° in the form of a hook or conical, the organ 51 projecting with respect to the outer peripheral surface of the cylindrical segment 49. An opposing member 52 is integrated in one piece with the main body 13. The member 52 is radially spreadable in a flexible or elastic manner. In this way a finger 52 is caught behind the rigidly shaped member 51. The finger 52 is spaced with a very small distance from the outer peripheral surface of the segment 49. During the actuation of the pump the member 52 can slide axially over said outer peripheral surface, the organ 52 detaching from the organ 51. The organ 52 is disposed by the inner peripheral face of the free end of a shoulder or sleeve 53. Said projection 53 protrudes inside the cap skirt 14 and radially spaced from the face thereof. interior of the hood front wall to a lesser extent than the hood skirt. The organ may have one or more axial slits to increase its flexibility. When assembling the unit 3 on the unit 2, the annular locking finger 52 slides on the annular member 51, the nail 52 being stretched against the elastic force of the sleeve 53 until it moves completely above the member 51 and returns elastically to its position of lock In case of applying a very high tensile force on the units 2 and 3, the lock 50 can be elastically uncoupled in the opposite direction, thus making it possible to detach the units 2, 3 from each other. The mutual contact of the members 51 and 52 in the Starting position is not watertight so air can pass between them.

Said organs also constitute delimitations of the conduit 21. The locking means 23 or the seal 8 has an annular germ filter 54, which is supported directly on the end surface of the neck 5, as well as on the outer periphery of the housing 12 with a certain pretension and / or radial. The filter 54 is constituted in the form of a washer and the neck 5 is made of glass. The filter 54 can be constituted by a porous material, for example semi-permeable, allowing the gradual passage of air in the direction towards the chamber 19, not allowing the fluid medium of the chamber 19 to exit in the opposite direction. , the filter 54 serves as a fluid medium seal, not as a seal for the gaseous fluid. The air penetrates from the enclosure within the section 48 towards the front face and the peripheral surface of the filter 54, through which air flows radially inwardly and subsequently between the neck 5 and the casing 12 through the corresponding face front of the filter 54 towards the enclosure 19. On the outer front face of the filter 54 an annular or washer-shaped joint 55 can be provided between said filter and the flange 7. The outside diameter of the seal 55 is functionally smaller than the diameter exterior of the filter 54. The seal 55 is impermeable to air. The filter 54 can also sit directly and without the cooperation of an additional joint 55 on the flange 7. Operation For the drive the unit 3 is moved with the fingers, which press on both sides of the nozzle 15 on the handle 16 moving the unit 3 in a stroke on unit 2, reducing the volume of the pumping chamber. The corresponding outlet valve opens after a first partial stroke and the fluid medium is expelled from the pumping chamber through the channeling provided in the rod 11 towards the conduit 20. From the latter the fluid medium flows in the direction of the axis 10 through the organ 35, the spring 29 and the channel 31 which is downstream of the plunger 27 towards the corresponding annular chamber. This establishes an overpressure. When a certain limit pressure is reached, the upstream unit 24 is pressed against the spring force of the spring 29 without abutting against the end of the sleeve 34. With this measurement, the valve member 25 of the seat 38 is raised until its edge The closure is free within the broadening 41. The fluid medium can subsequently circulate successively through the channels 44, along the profiled portions 47 and 37 towards the channeling segment 41. In the channel 41 the fluid medium flows through of the outer peripheral surface of the member 25 increasing the current velocity since in the segment 41 the cross section of current in the current direction is reduced. The sealing edge of the member 25 defines with the segment 41 and the cylindrical channeling segment that an annular nozzle is continued in it, in which the fluid medium is sprayed. Then the fluid medium circulates along the cylindrical segment of channeling in segment 40, in which the current velocity is further increased due to the narrowing. The fluid medium which is in a rotary stream then enters the nozzle duct 39. The fluid is released from the boundary edge of the outlet 17, finely pulverized again as a spray cone. All of the channeling segments 39, to 41, as well as the cylindrical channeling segment that lies between them, are delimited together in one piece. Said segment is inside the front wall 34. Its length in total may correspond to the interior width of segment 41.

As soon as the pressure in the pumping chamber or in the chambers 19, 20 has sufficiently decreased, the control part 34 returns with the organ 25 in the exit direction towards its closing position. The member 25 penetrates abruptly into the cylindrical channel segment, the closing edge with the narrower end edge of segment 41 forming a valve control edge. On reaching this end edge, the downstream channel part is hermetically sealed with respect to the upstream channel part 41,44,31, namely before reaching the seat 38. The organ 25 acts now as an ejection piston. The plunger 25 ejects completely under spray to the fluid medium of the cylindrical channeling segment and the segments 40, 39, namely until the closing edge sits under high surface pressure on the seat 38 and the segments 39, 40 are completely emptied. Segment 39 may be shorter than segment 40, the latter being at most as long as segment 41 or shorter. If the handle 16 is released previously or now, the unit 30 returns to its initial position. For this purpose, a spring acting on the plunger unit, such as a compression spring, can be provided in the pumping chamber. With this measure the fluid medium from the chamber 19 is sucked into the pumping chamber, while the outlet valve remains closed. In the chamber 19 a depression occurs in this manner, whereby atmospheric air is drawn into this, namely with a very slow current velocity. The air circulates successively through the filter 54, the embossed ring 9, its end, the locking means 50, the jacket 53, the inner housing chamber 14, as well as its free end and / or the pipe 36, namely during so long until the pressure in the chamber 19 is only slightly below atmospheric pressure. As a result, no germs can penetrate into the chamber 19, as well as into the channeling segments 41 or the channeling segments that lie between them. The closing edge of the organ 25 can act as a scraper on the cylindrical part of the duct during the closing movement, with residual fluid medium being eliminated in the exit direction. Due to the impact effect of the plunger 25, there are practically no residues of fluid medium in the segments 39, 40, which could otherwise be contaminated by germs. In the embodiment according to FIG. 2, the slide 24 is not required, which is constituted in a telescopic manner by the liners 32 and 34. The slide 24 is replaced by a stretchable and elastically stretchable part 34. The part 34 constitutes simultaneously the spring 29 and delimits the channel 31 along its entire length and its entire periphery. The spring 29 extends from the outer side of the bottom of the plunger 27 to the washer-shaped front wall of the plug body 33, and is molded in one piece with said parts. The spring 29 has on its periphery and its length constant wall thicknesses. The sleeve, however, forms, as in the case of a coil spring, one or two helical fillets which lie one inside the other. In this way, the outer perimeter is formed in a complementary manner with the inner perimeter as a pronounced slope propeller with a slope of at least 30 or 45%. The larger outer diameter or the smaller inner diameter of the spring 29 is constant throughout its entire length. The smaller inner diameter matters less than 5 or 3 or 1.5 mm. The outer perimeter of the spring 29 is in the immediate adjacency without contacting the inner perimeter of the jacket 32. At the end of the jacket 33, which is opposite to the spring 29, as well as through the opening open of the housing 14 a coupling body 30 with an outer jacket has been inserted, namely at a given position by means of an axial stop. The inner sleeve which is radially spaced from the outer jacket forms the coupling member 35 of the body 30. Within the channel 31 the bottom of the piston 27 is eccentrically transferred by an axial transfer channel 56. Said channel 56 It flows into the annular control chamber of the plunger 27 or in the ducts 44. Once the fluid medium has left the rod 11 it circulates exclusively inside the duct 31, which confers to the fluid medium by means of its internal profiling a current rotary shaped spiral. Said current passes through the duct 56, along the guide surface 47 towards the pressure side of the plunger 27 and from this towards the outlet 17. The duct 56 is substantially narrower than the duct 31. The component part 34 is materialized as a bellows. The inner chamber 31 of the bellows 34 is reduced when the valve 22 is opened and thereby causes an acceleration of the current. When the valve 22 is closed, the volume of the chamber 31 increases again, the fluid medium being sucked back out of the channel segments 41, 44, 56 and removed from the valve area 22. According to FIG. 3, the diameter of the spring 29 is substantially smaller. The channel 56 is embodied as an angular channel, the channel leg being connected to the channel 31 on the axis 10 of the channel 31. The other channel leg passes through the guide surface or between the ends of the channel 44 as well as outside the plunger 27. In FIG. 4, the constructive unit is shown in a part made up of the parts of components 25 to 27, 29, 33 according to FIGS. 2 and 3. Coupled to the sleeve 33 is indicated the spring 29 according to figure 3, the spring being indicated in each case only with a partial length. Said unit is placed prior to assembly on the units 2 and 13 through the sleeve 53 and the nails 52 in the main body 13, as well as in the nozzle 15. The body 30 is placed in the same way before or afterwards. By means of the body 30, the jacket 33 formed of relatively soft elastic material is tensioned radially against the inner peripheral surface of the sleeve 32. According to FIG. 4, the spike 26 has a cylindrical configuration along its entire length, the latter not being the same. provided with a flattening 36 or a profile 37, 47. From figure 4 the closing edge 58 of the organ 25 is also recognized which ends the end face 57. The outlet valve of the pump 6, which is connected to the chamber pumping, can be adjusted. In this way it also opens when the pumping chamber is only filled with air and a pumping stroke is carried out. The air chamber then extends without interruption from the pumping chamber to the closing seat 38, 58. With this measure a very simple start-up (Priming) of the pump is obtained, particularly when the pump is put into service, all the chambers of the ducts can be filled easily with fluid medium. The ducting 36 also serves for aerating the annular chamber in the nozzle 15 which delimits the plunger 27 when the body 30 is used as a plunger. Through this channel 36 it is also possible to subject said annular chamber to a depression with a test device. The depression acts on the lip 27, it being possible to detect the airtight seat of the lip 27 on the basis of a pressure drop in the annular chamber. The flattening or the like can ensure that the ends of the spring 29 make a twisting motion on the shaft 10 and with respect to the body 13. Due to the spiral shape, a torsional tension of the spring 29 is also established during axial shortening. The torsional tension overlaps and complements during the expansion of the spring to the axial tension, thus achieving very reduced closing times. For the complete housing of the nozzle 15, a cap not illustrated in detail has been provided for the periods that the expander is not used. Said cap covers outlet 17 with a very small gap. The cap extends to the handle 16 and sits tightly on a flange 59 provided on the outer peripheral surface of the nozzle 15, thus preventing or hindering the penetration of germs. According to figures 6 and 7 the gasket 8 or the blocking means 23 may be extended in the axial direction through the gap defined between the neck 5 and the flange 7. The foregoing may stand alone for the joint 8 or alone for the locking 23. The body 60 provided for this purpose however, it can also serve as a filter or germ filter, as well as a gasket and be continuously formed in one piece. The body 60 may contain antibactericides which cause the death of the germs by contact. The extension in the form of sleeves 62 is provided in this case only upstream with respect to the flange 7. The sealing and / or filtering body 60 has an annular flange 61, which is clamped like the parts 54 and 55 axially under tension between the front faces of the neck 5 and of the flange 7. The flange 61 is curved in axial section in an unstressed state towards each side of the axis 10 with respect to independent centers of radius of curvature. In this way the flange 61 defines for contact with the flange 7 a convex curved face and for the seat on the neck 5 a concave curved face, which extends continuously as an annular groove on the periphery of the flange 61 A sealing lip 65 protruding axially is provided on the convex curved face, said sealing lip 65 being at a greater distance from the outer perimeter than the inner perimeter of the flange 61. The annular lip 65 has, in cross-section, flanks in FIG. angle and is crushed by pretensioning the ring 9 against the front face of the flange 7. The lip 65 seats accordingly, as the segments that are continued radially on both sides of the front face of the flange 61, with greater sealing compression on the flange 7 that said segments. Both front faces of the flange 61 are therefore supported in a continuously closed position or with a surface on the front faces of the parts 5 and 7.

Only the internal perimeter of the flange 61 continues in the axial direction the sleeve part 62 in one piece. The jacket 62 has a wall thickness for the greater part of its length or continuously, which is smaller by at least a third or half than the wall thickness of the flange 61, this being below 1 mm or less. 0.7 mm. The sleeve 62 has a longitudinal portion 63 which is directly continued from the flange 61. Furthermore, a longitudinal segment 64 is provided, which is continued only from the segment 63. The segments 63, 64 protrude freely in the upstream direction in the neck 5 or the chamber 19. The tapered segment of the acute angle 63 is narrowed in said direction more sharply than the segment 64. This latter segment may have the same conicity on the length of its inner peripheral surface as the corresponding part of the housing 12. In this way the segment 64 sits on its length and on its periphery in a uniform manner on the outer peripheral surface of said housing portion. The length of segment 64 corresponds to at least at most one-third to one-half of its inside diameter. The inner peripheral surface of the segment 64 is continued in the same manner as its outer peripheral surface in stepped form in the corresponding inner peripheral surface and enlarged outer peripheral surface of the segment 63. The segment 63, as well as the flange 61, are completely free of contact with respect to the housing 12. The inner peripheral surface of the segment 64 has two sealing lips or sealing lips 66, which have a smaller separation with respect to the free end of the jacket 62, 64 than with respect to the segment 63. The flanges 66 have an annular configuration and protrude with respect to the inner peripheral surface by less than one tenth of a millimeter. Each flattened flange 66 has, in axial section, a circular arc shape, namely an arc angle greater than 120 °. By radial pressure applied against the housing 12, each flange 66 can be sunk into the surrounding surface of the adjacent inner peripheral perimeter. The flanges 66 extend seamlessly on the inner peripheral surface. Referring to their respective extensions in axial direction, the shoulders 66 have at most a large distance from each other. The flanges 66 have a smaller spacing from that mentioned above with respect to the free end surface of the segment 64. In the adjacency area of the flanges 66, ie between the flanges 66 and throughout the entire length of the segment 64 the outer peripheral jacket of the housing 12 is free of depressions, whereby the flanges 66 do not engage in depressions, but on the contrary settle on an outer surface of the housing 12, smooth, uninterrupted and tapered at an upstream angle, up to a shoulder, by which the casing 12 upstream is narrowed. The aeration of the chamber 19 according to FIG. 1 can take place along the outer surface of the housing 12 or through its inner chamber. In the second case the current flows along the rod 11 to the housing 12 and out of it in the area of the segment 63 through a housing opening, namely directed against the inner peripheral surface of the jacket 62. Then the air circulates to the segment 64, which is elastically widened radially under the pressure of the fluid so that the lips 66 detach from the housing 12 allowing air to flow into the chamber 19. Consequently, it has been formed in this case an aeration valve that works as a function of pressure. Before reaching a total pressure equilibrium, the lips 66 return radially again to their closing position inward, the segment 64 narrowing. In the first case, the filter 54 can be arranged between the flanges 7 and 61. With this measurement the air it also enters first segment 63 and then segment 64. The body 60 is constituted in its entirety in a piece of plastic, namely an elastic material to tensile, pressure and bending. The lips 66 can constitute the corresponding means for blocking germs. The lip seal 60 protects against spillage of the fluid medium outside the chamber 19. To balance the pressure in the chamber 19 the seal 60 is opened even with a small depression or a small pressure, which is slightly lower than the atmospheric pressure. The filter membrane 54 is thus protected against contact with the fluid medium or its wetting since the seal 60 together with the body 12 delimits a dry chamber between the lips 66 and the flange 7 inside the sleeve 62. No fluid from the chamber 19 can enter the dry chamber. In addition to the means for these functions, the seal 60 also forms the closing seal for the reservoir 4. All the characteristics of all the embodiments can be combined with each other All the effects and properties indicated may be provided exactly as described, only approximately or substantially as described or departing strongly from it. Described that has been the nature of the present invention and the way to put it into practice, it is declared that what is claimed as invention and exclusive property, is:

Claims (12)

R E I V I N D I C A C I O N S

1. - Dispenser for fluid media, characterized in that it comprises a main body for housing a fluid medium chamber, a fluid medium outlet provided at the end of a fluid medium conduit and / or a fluid conduit such as an air supply conduit for compensation of pressures in the fluid medium chamber by means of closure capable of being brought to an open position and means being provided in the fluid conduit against contamination by germs of the fluid medium.

2. Dispenser according to claim 1, characterized in that it has two units arranged in displaceable form against each other, which are secured together by a detachment lock, the first unit being particularly appropriate for dispersing the fluid medium under pressure on its own also without the second unit and the two units being mutually exclusive through a plug connection.

3. Dispenser according to claim 1 or 2, characterized in that an annular crimping is provided, such as a gofrable ring, which delimits at least a part of the fluid conduit; and preferably presenting the crimping in a spaced apart manner with respect to its end which is upstream a position latch for a moving part.

4. Dispenser according to at least one of the preceding claims, characterized in that a dispense drive has first and second units movable manually against each other and axially displaceable, the same being movable for a successive waste from an initial position to a final position of pumping and back to the initial position and the crimping being arranged preferably as a fixing sleeve arranged integrally in the first unit, and the fluid conduit being delimited by the interior surface of the crimping.

5. Dispenser according to at least one of the preceding claims, characterized in that a first unit has a pump retained by means of a crimping on a reservoir of fluid medium, said pump being seated on the reservoir of fluid medium with sealing means and being sealing means passed through the fluid conduit.

6. Dispenser according to at least one of the preceding claims, characterized in that a crimping means constitutes in the area of its end that a locking member is located downstream at its outer periphery, said locking member being in particular constituted by a permanent deformation of bending of the setting and preferably making the second unit in the initial position with an opposing member in said locking member.

7. Dispenser according to one of the preceding claims, characterized in that the closing means have a closing member that opens under the pressure of the fluid medium, which is displaceable particularly in a direction parallel to the axis of the outlet of fluid medium and being an automatic closing movement of the closure member preferably directed in the flow direction of the fluid medium.

8. Dispenser according to at least one of the preceding claims, characterized in that a mobile closure element of the closing means has as its closing surface an annular edge, in particular the closing surface defined by the transition between a front surface and a peripheral surface and the closing surface being provided at the end of a tang of the closure member, staggered in the area of the fluid outlet.

9. Dispenser according to at least one of the preceding claims, characterized in that a control piston of a closing member of the closing means is guided in all positions on the inner perimeter, as well as on the outside on stationary guide surfaces of the conduit. fluid medium, the control piston delimiting a channel that passes through it, of the fluid medium conduit at its periphery and the control piston being preferably arranged in a channel jacket of the fluid medium conduit, which projects upstream with respect thereto.

10. Dispenser according to one of the preceding claims, characterized in that a closing member of the closing means is displaceable to the closing position by means of a bellows-shaped recovery spring, which has an axially deformable sleeve with a spiral fillet and the recovery spring being coupled at one end directly to the control piston in one piece.

11. Dispenser according to one of the preceding claims, characterized in that the outlet of fluid medium is arranged at the end of an exit nozzle of reduced thickness and the end of a recovery spring, which is upstream, is stationary secured in the axial direction inside the outlet nozzle with a retaining body, which is rigidly or in one piece with the recovery spring and said retaining body being linked with a coupling member independent of the pump for sealing connection to the germs with a driving rod.

12. - Dispenser according to one of the preceding claims, characterized in that for the sealing of the fluid conduit or the like there is provided a sealing body with a sealing jacket that surrounds the main body, particularly seating the sealing jacket within a reservoir chamber with the less one third of its length tightly on the outer peripheral surface of the main body and said sealing jacket being enlarged by means of depression prevailing in the reservoir chamber, said sealing sleeve particularly under radial prestressing with two sealing lips axially spaced and the antagonistic outer surface of said main body free of depressions at least in the area of one of the sealing lips. SUMMARY Dispenser for fluid medium, with reservoir, pump and spray nozzle, which has a means of blocking germs in the nozzle. Said blocking means is constituted by a valve that opens and closes as a function of the pressure. In the connection zone between the reservoir and the pump, another means for blocking germs is provided in an aeration channel. This last blocking means has a filter that acts as a seal. Two manually movable units of the device are secured by means of a lock against their mutual detachment. In this way you can effectively prevent the penetration of germs.