EP0648180A1

EP0648180A1 - Dispenser for pasty materials.

Info

Publication number: EP0648180A1
Application number: EP93915857A
Authority: EP
Inventors: Schuckmann Alfred Von
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-10
Filing date: 1993-07-09
Publication date: 1995-04-19
Anticipated expiration: 2013-07-09
Also published as: DE4308397A1; EP0648180B1; ATE146434T1; DE59304828D1; WO1994001346A1; AU4566693A

Abstract

A dispenser (Sp) for pasty materials (3), such as tooth paste, has a head piece (7) with an outlet (4) and an actuating surface (6). A transport piston (8) gradually wanders under air pressure in the direction of the outlet (4) and pushes the material (3) before it with its front side (9). In order to obtain a simple design and a reliable operation of the dispenser, the transport piston (8) is moved by an air overpressure (zone D) that accumulates behind the transport piston (8) when the dispenser is actuated.

Description

00001 Dispenser for dispensing pasty masses

00002

00003

The invention relates to dispensers for dispensing pasty

00005 masses, such as toothpaste, with a mouthpiece opening

00006 voltage and an actuating surface forming head piece and

00007 a step by step from the air pressure load

00008 in the direction of the mouthpiece moving piston, the

00009 with its front pushes the mass in front of it. 00010

A donor of this type is described by DE-AS 12 10 149

00012 knows. The headpiece is a collapsible, balga-

00013 ger cathedral, which in the return movement by negative pressure

00014 pulls the transport piston via the level column. The back

00015 actuating movement is spring-assisted. 00016

From US-PS 32 68 123 it is known mouthpiece opening

00018 and actuating surface on a rigid, against spring loading

00019 stung movable head piece. 00020

The subject of DE-PS 30 44 439 is a dispenser with external

00022 housing and inner housing guided therein. The top of the

00023 cantilevered inner housing forms a mouthpiece opening

00024 with adjacent operating area. The inner case is

00025 on the bottom of the dispenser by means of a compression spring

00026 supports. In the center, the donor carries a so-called climbing

Rod on which there is a transport piston on one side

00028 acting ratchet leads. 00029

00030 Knowing these requirements, the invention has the task

Be provided, structurally a dispenser of the generic type

00032 easier to train, yet more reliable. 00033

This is solved by the task specified in claim]

00035 invention. 00036

The subclaims are advantageous developments of the

00038 generic dispenser. 00039 According to such designs, is a generic

00041 dispenser of simplified construction and increased utility value

00042 achieved: The air pressure load is now on the transport piston

00043 effective immediately. The output is more spontaneous. The applied

00044 th means are simple and convenient. This is how it is

00045 proceeded that the transport piston according to a

00046 pressure built on the back of the transport piston

00047 kes is moved. The feed takes place via an "air bridge"

00048 ke "and no longer via a vacuum situation interspersed with mass. It is further proposed that the air overpressure

00050 pressure is built up by approaching the back of the trans

00051 portkolben to a housing-fixed counter-piston, the

00052 space between the two pistons due to enlargement

00053 the distance of the piston opening valve with the outside air

00054 - meaning atmosphere - can be connected. The valve

00055 leaves immediately with insertion of the appropriate distance magnification

00056 ß air balance arise, i.e. that previously issued

00057 ne volume of mass is added to air. The compressibility

00058 did the trapped air also leads to one

00059 welcome rise and slowdown in the output of the crowd.

00060 It will not be thrown out in an uncontrolled manner. Brings further

The invention proposes that the counter-piston on a

00062 Socket of an outer housing sits, relative to which one

00063 inner housing so displaceable against spring loading

00064 is that the base in the lower end of the

00065 projecting surface over the upper edge of the outer housing

00066 running inner housing. In this respect, the inner casing

00067 usefully used in functional expansion by the header

Forms 00068 pieces, including mouthpiece opening and actuating surface

00069 marriage. To get a comfortable operation is one

00070 compression spring between the lower edge of the inner housing and the floor

Arranged 00071 of the outer housing. This results in automatic

00072 table again the starting position for the next edition

00073 hub. In terms of construction, it then proves advantageous that

00074 bottom and base of the outer housing to the lower end of the

00075 casing wall are screwed. There is more than one reason

00076 additional advantage in terms of forming a that

00077 insertion of the inner housing enabling gate, but

00078 also that of carefully screwing in the opposing 00079 bens. His lips can't turn like this

00080 for example with a purely linear feed and not yet

00081 overlapping rotary motion could be the case. The arrival

Screws 00082 also forms a familiar to the consumer

00083 type of assignment, so that also for this reason the acceptance

00084 of the donor is given - To a trouble-free flow of power

00085 of the compression spring, the relevant spring

00086 abutment designed so that the inner housing end

00087 the compression spring is covered by an annular guide piece

00088 gene. The latter can at least partially form one

00089 spring chamber are used in that the cross section

00090 of the guide piece is U-shaped and the lower one

00091 edge of the inner housing sits on the U-web. Further

00092 it proves to be advantageous that the lower edge of the inner housing

00093 ses of the compression spring against a stop of the outer housing

00094 ses is pressed. This always results in an exact

00095 recurring home position. To the guidance system

00096 between axially movable inner housing and outer housing

To keep 00097 low, it is also advantageous that

00098 the stop in longitudinal guide ribs for the inner housing

00099 se continues; in other words: the longitudinal ribs end at the

00100 formation of the stop on a common transverse plane of the

00101 dispensers. An advantageous further development then results

00102 in that the valve sits in the ceiling of the base, the

00103 is designed as a downward indentation of the floor.

00104 In addition to high material savings, this leads to a anyway

00105 stable bottom of the dispenser. In addition, the retraction

00106 hung useful for the formation of the spring chamber mentioned

00107 pull. It is also advantageous that the ceiling of the

00108 kels is framed by a piston ring and this with this

00109 together forms the counter-piston- To the rule out

00110 elastic or flexible material formed piston ring

00111 can also be converted into another function at the same time,

00112 proposes the invention that the valve closure body of the

00113 valve is connected to the piston ring via webs. Valve

00114 and piston ring are such a structural unit. A design

00115 tion of even independent meaning results from one

00116 cartridge-shaped inner housing for use in a dispenser

00117 then according to claim 1 in that a trans- 00118 wall section protruding piston the cylinder space

00119 for a counter-piston retractable there from the lower end

00120 forms. This allows the inner housing in the form of a

00121 refill pack can be realized, so that such a dispenser

00122 can be used again and again. The Andok is optimized

00123 ken through a funnel-shaped counter-piston inlet section

00124 at the bottom of the sleeve-shaped housing wall. 00125

00126 Another advantageous embodiment in solution of the rack

00127 th task is that to generate the back

00128 of the transport piston built air pressure a bellows

00129 is provided, which is located on the lower edge of the jacket surface.

00130 before the inner housing connects, and which an air inlet

00131 let valve is assigned. This configuration works

00132 even more smoothly due to the elimination of friction

00133 counter piston. Since the inner housing is usually made of plastic

00134 fabric is made, with appropriate use

00135 the restoring force of this material the bellows the lower

00136 edge of the inner housing be molded in one piece.

00137 However, a solution is advantageous in that the bellows as

00138 separate component to create. It turns out to be

00139 stig that the air inlet valve on one of the inner housing

00140 overflown base sits, which has a holding projection for

00141 forms the upper edge of the separately designed bellows.

00142 The bellows can already be assigned to the 00143 base with a certain preload. It is also favorable that

00144 the base is formed from the bottom of a screw cap

00145 which floor the lower edge of the bellows is supported.

00146 Finally, it proves advantageous that the bellows

00147 is designed as a bellows and the return spring of the 00148 inner housing.

00149

00150 The object of the invention is based on two

00151 illustrated exemplary embodiments in more detail

00152 explained. It shows: 00153

00154 Figure 1 shows the dispenser according to the invention in vertical section

00155 in basic position, enlarged, according to the first

00156 embodiment, 00157 Figure 2 is a same section when in use

00158 donor, 00159

00160 FIG. 3 the dispenser in the dispensing actuation position,

00161

4 shows the section along line IV-IV in FIG. 3,

00163

00164 Figure 5 shows the dispenser according to the invention in vertical section

00165 in basic position, enlarged, according to the second

00166 embodiment, 00167

00168 Figure 6 the dispenser in dispensing actuation position, 00169

00170 Figure 7 the screw cap carrying the bellows in side

00171 sees and 00172

00173 Figure 8 is a top view of this. 00174

00175 The dispenser Sp shown is realized as a standing device.

00176 It has a long cylindrical outer housing 1. This

00177 accommodates an inner housing 2 which is axially longitudinally guided therein. 00178

00179 With regard to the inner housing 2 is a

00180 sleeve-shaped structure, which pasty mass 3 to be dispensed

00181 contains. 00182

00183 With regard to mass 3, it can be toothpaste, cream or

00184 also trade food. The sleeve-shaped inner housing 2

00185 is cup-shaped, so it is open at one end. The

00186 opening-side end points downwards. 00187

00188 The other, closed end of the inner housing 2 forms one

00189 lateral mouthpiece opening 4 with molded originality

00190 closure 5. The tamper-evident closure 5 is tapered

00191 and can be canceled by reverse insertion into the

00192 mouthpiece opening 4, if necessary, as a sealing plug

00193 yaw. 00194 00195 There is an actuator on the side of the mouthpiece opening 4.

00196 gungsflache 6. The latter is part of a head piece 7,

00197 formed from the top projecting freely from the outer housing 1

00198 end of the inner housing 2. The direction of actuation is in

00199 Figure 3 identified by arrow P. Under such pressure

00200 actuation causes the dispenser mechanism M to step by step

00201 Shifting a transport piston 8. This pushes with its

00202 ner front 9 the pasty mass 3 in the dispensing direction,

00203 in the direction of the mouthpiece opening 4. This direction is

00204 indicated by arrow x. 00205

00206 The displacement of the transport piston 8 takes place via air

00207 pressure load, specifically according to a

00208 tig of the transport piston 8 built air pressure. The

00209 pressure-loaded rear of the transport piston carries it

00210 reference number 10. The zone of the air pressure generated is

00211 designated D. 00212

00213 The excess air pressure is built up by approximating the

00214 ten rear 10 of the transport piston 8 to a stationary,

00215 i.e. Counter-piston 11 fixed to the housing.

00216 position of the dispenser Sp sealing in the local end of the

00217 inner housing 2. The at the same time as the cover of the

00218 refill pack acting transport piston 8 is sufficient

00219 far into the interior of the cartridge-shaped inner housing 2

00220 introduced so that one over the back 10 of the transport

00221 piston 8 wall portion 2 'projecting downwards

00222 the housing wall of the inner housing 2 remains. This wall

00223 section thus creates a cylinder space 12 for the

00224 retract assembly or subsequent assembly from the lower end

00225 cash counter piston 11 of the dispenser mechanism M of the dispenser Sp. 00226

A valve V is assigned to the counter-piston 11. About this

00228 there is a connection between room 12 or cylinder

00229 room 12 and the atmosphere. The valve V opens when

00230 tion of the distance between transport piston 8 and counter-piston

00231 ben 11. About this open to the outside air or atmosphere

00232 The space 12 is moved around the volume of the mass 3 00233 balanced by air. Valve V acts as a return

00234 impact valve. 00235

00236 The counter-piston 11 forms the upper end of a base

00237 13, which starts directly or indirectly from the outer housing 1.

00238 In the illustrated embodiment, the base is 13

00239 integral part of a bottom 14 of the dispenser Sp. Die

00240 unit base 13 / base 14 is at the lower end of the

00241 screwed housing shell wall 15 of the dispenser Sp. To

00242 the bottom 14 continues peripherally in a raised ring wall 00243 16. The latter forms a cap and carries internal

00244 winch, which with a corresponding external thread on the

00245 housing jacket wall 15 interacts. The ring wall 16 is

00246 overlaid on the upper side by a circumferential covering bead 17. 00247 The latter is also integrally formed on the casing jacket wall 15 of the outer casing 1.

00249

00250 in the same direction as 16 starting from the floor 14

00251 is a concentric to the annular wall 16, itself

00252 inside the wall of the outer housing 1 extending

00253 ring collar 18. The latter has a greater axial length

00254 as the peripheral ring wall 16, exceeds its length by approximately

00255 half to double the measure. 00256

00257 The base 13 is radially spaced from the ring collar

00258 18 ongoing confiscation, which and opening side

00259 tig with a horizontal ceiling 19. The ceiling 19

00260 is framed peripherally by a piston ring, forming the

00261 mentioned counter-piston 11. The flexible or elastic piston

00262 ring engages with an inside clip bead 20 in one

00263 adapted annular groove 21 below the level of the ceiling 19. ceiling

00264 19 and piston ring put together the counter-piston 11. In

00265 basic position only protrudes the opposing piston 11, i.e. the top

00266 end of the drawing into the area formed by the wall section 2 '

00267 th cylinder chamber 12. 00268

00269 The flexible material of the piston ring opens up a further

00270 education in that it is the valve closure body 22 of the

00271 valve V forms. The latter has semi-spherical or 00272 conical shape and is directed downwards. His

00273 surface interacts with a valve seat surface 23.

00274 This valve seat 23 is realized by the upper

00275 edge of an air passage opening 24 in the ceiling 19

00276 of the base 13. The downward opening retraction of the

00277 Base 13 acts as an air duct. The central one

00278 valve closure body stands over webs 25 with the annular piston

00279 in connection. The webs are designed as curved, horizontally

00280 directed radial webs designed. They have an S-shape

00281 history. A total of three are equally distributed

00282 te webs 25 realized. The inner ends grip one

00283 the node plate 26 supporting the valve closure body 22,

00284 in the center of which the valve closure body 23 is rooted. 00285

00286 Said confiscation is cylindrical in shape and enters

00287 its outer diameter clearly compared to the clear diameter

00288 esser of the inner housing 2 back. Protrudes into the space

00289 the described piston ring of the opposing piston 11. 00290

00291 The inner housing 2 is in the direction of that from FIG. 1

00292 visible, stop-limited basic position under spring

00293 load. This is used in the area of dispenser mechanics

00294 M used compression spring 27. It is a screw

00295 manual pressure eder. It holds the dispenser head in such a way

00296 sufficient board position that his head 7 far ahead

00297 gend over the upper, retracted edge 28 of the outer housing

00298 1 protrudes. The introduction is shown in Figure 3. 00299

00300 The compression spring 27 extends between the lower edge

00301 29 of the inner housing 2 and the bottom 14 of the outer housing 1.

00302 The cylindrical helical plane of the compression spring 27 is aligned

00303 practical with the cylindrical, extended wall level

00304 of the inner housing 2. The upper terminal turn of the pressure

00305 spring 27 does not occur directly against the lower one

00306 edge 29 of the inner housing; the inner housing end of the

00307 compression spring 27 is rather of an annular guide

Overlay 00308 piece 30. This has a U-shaped cross section.

00309 The U-opening points in the direction of the bottom 14. The U-shaped

00310 guide piece is of such a length that it also in the 00311 Figure 1 apparent basic position at least with his

00312 outer U-leg an overlapping protrusion to the ring

00313 gen 18 of the bottom 14 does not leave. Said leg leads

00314 on the inner wall of this ring collar while the other

00315 U-leg its guidance on the lateral surface of the cylindrical

00316 see, downwardly open retraction of the base 13 takes place.

00317 In this way, a spring chamber 31 for the compression spring

00318 27 created. 00319

00320 The lower edge 29 of the wall section 2 'or the

00321 inner housing 2 sits on the top of the horizontal

00322 U-web 32 of the guide piece 30 supported on. 00323

00324 The protruding position of the

00325 head piece 7 is stop limited. This happens in such a way that

00326 the lower edge 29 of the inner housing 2 by the compression spring 27

00327 is pressed against a stop 33 of the outer housing 1.

00328 With regard to this stop 33 is the after

00329 bottom-facing, bevelled ends of several guide

00330 ribs 34 on the inside of the cylindrical inner housing

00331 2. The strip-like longitudinal guide ribs go particularly well

00332 clearly from Figure 4 and produce only a small

00333 guide surface between the leading outer housing 1 of

00334 Spenders Sp and the guided inner housing 2 of the same. The

00335 mentioned bevel of the front ends converges in the output

00336 tung (arrow x). This has a centering effect on the inner

00337 housing 2 and facilitates the docking or insertion mentioned

00338 of the opposing piston 11. To the stop overlap

To produce the cartridge-like inner housing 2 is 00339

00340 lower edge clearly above the outer diameter of the cylindrical

00341 see body pulled out - that is, thickened. 00342

00343 Another measure regarding the docking results

00344 by creating a funnel-shaped counter-piston inlet b-

00345 section 35 on the inside of the lower edge 29 of the sleeve-promoting

00346 migen housing wall or the wall section 2 '. Lockpick-

00347 terung has such an entrance width that the usual

00348 existing, protruding sealing lips 36 of the two pistons, 00349 8, 11 gently against her without risk of turning over

00350 restoring force somewhat constricted. That brings density. 00351

00352 The head piece 7 is when not in use by a protective cap

00353 37 can be overlaid. The latter is in plug or screw connection

00354 fertilizer for outer casing 1. 00355

00356 The function and use of the dispenser described are

00357 briefly explained. 00358

00359 If the dispenser Sp is loaded, it becomes portioned delivery

00360 of its content a force in the direction of arrow P on the

00361 headpiece 7 exercised. This leads to an overflow of the

00362 piston-reinforced base 13. The volume of the cylinder space 12

00363 shrinks. The compressed trapped air practices

00364 a pressure on the back 10 of the transport piston 8.

00365 This pushes mass 3 over the mouthpiece opening 4

00366 shapes. The operation takes place against the force of the

00367 compression spring 27. If the actuating surface 6 is now released,

00368 the compression spring 27 moves the inner housing 2 again in the

00369 arrow x. Despite slight friction of the pasty mass and 00370 that of the transport piston 8, the slight

00371 sack movement brings at most a slight suck back

00372 gene of any excess mass via the mouthpiece opening 4,

00373 is however not able to slide the cylinder space 12

00374 see the counter piston 11 to reduce, rather opens

00375 there is primarily the valve V in the counter-piston 11. Via 00376, air equalization takes place in the amount of the mass volume dispensed

00377 instead. Returned to its basic position

00378 ten, the inner housing 2 can be used for the next stroke

00379 etc. 00380

00381 For the first or new assembly, the base 14 is unscrewed,

00382 used a new refill cartridge. This happens

00383 moderate with dispenser head pointing downwards. By introducing

00384 ren or screwing the bottom 14 the opposite

00385 piston 11 by means of Aπdock assignment in the area of

00386 wall section 2 '. It closes the cylinder chamber 12. 00387 Any enclosed compressed air serves as a pressure pole

00388 stockpile. The donor is ready to use. 00389

00390 The dispenser Sp according to the second embodiment (Fig-

00391 ren 5 to 8) is what the basic principle of the transport piston

00392 concerns ben 8 driving air pressure, identical construction

00393 it. The reference numbers are partly without textual repetitions.

00394 lungs, applied accordingly, the text for the most part

00395 also readable on the second embodiment. 00396

00397 The structural difference is that for generation

00398 of the air pressure in zone D instead of the housing-fixed

00399 counter-piston 11 now a bellows B occurs. It is a matter of

00400 a bellows compressible in the direction of arrow P,

00401 which adjoins the lower edge 29 of the inner housing 2

00402 closes. 00403

00404 The bellows can be made in one piece with the sleeve-shaped one

00405 the refill cartridge forming structure of the inner housing 2,

00406 by its jacket wall, ie wall section 2 ", over

00407 the lower edge 29 towards the bottom 14

00408 continues below. 00409

00410 In the illustrated embodiment, however, a separate

00411 rate formation of bellows B preferred. 00412

00413 Either way, the lower edge 38 of the bellows B is sealed

00414 against the corresponding top of the bottom 14. Die

00415 sealing effect can be derived from the elasticity of the bellows

00416 Generate material. This can be done using the internal pressure

00417 happen, it being advantageous that the final strength there

00418 dige fold 39 of the bellows against said top

00419 is pressed. The terminal fold 39 can, as shown

00420 represents, be broader, this using a

00421 even larger area as well as a larger area for

00422 the effective internal pressure. The inner front edge of this fold

00423 39 ends before that also present in this embodiment

00424 base 13 of the peripherally turned up to a cap Bo- 00425 dens 14. The cap is also realized here as a screw cap 40

00426 siert. 00427

00428 The bottom seal is marked with a.

00429

00430 A corresponding seal is also between the lower one

00431 edge 29 of the wall section 2 'of the inner housing 2 and

00432 the bellows B adjoining at the bottom. This seal

00433 bears the reference symbol b. It is located between the

00434 plan bottom of the lower edge 29 and the correspondie

00435 end upper edge 41 of the bellows B. This upper edge 41 is

00436 a horizontal step. Following this horizontal

00437 level, the bellows B merges into a plug-in projection 42

00438 which he projects into the lower, open end of the respective refill cartridge. The outer wall of the plug projection 42 is

00440 cylindrical. It lies sealingly on the corresponding one

00441 cylindrical inner surface of the air pressure generating

00442 Zone D. 00443

00444 The projection 42 is concentric around the central base

00445 13 around and is in the direction of the cylindrical jacket wall

00446 of this base 13 tapering in cross section and with additional

00447 maintenance of a continuous wall thickness. The way

00448 achieved horizontal ring web 43 is to secure the

00449 pulled the base 13 attached bellows B. The soc

00450 involvement of this safeguard on the kelε side looks like that

00451 above the top ceiling 19 of the base 13 jacket wall

00452 is a retaining projection 44 on the side. It is the same as the base

00453 molded and realized as a circumferential ring rib, the

00454 outward-facing forehead edge rotationsεym upwards

00455 converges metrically _r so that the ring web 43 is open well

00456 hen lets. In the assigned position, the upper side of the

00457 ring web 43 against the flat lower side of the holding

00458 jump 44. The bellows can be the corresponding preload

00459 voltage. It is held captive at 13. 00460

00461 As can be seen in FIG. 5, is located in the area of the horizon

00462 valley ceiling 19 a valve V. It is also here

00463 an inlet valve, which is now simply a plug-in 00464 technically final rubber or plastic rags formed

00465, which is the central air passage opening 24 in

00466 the ceiling 19 overlaid. At the second execution, the ceiling

00467 example, a lower level, i.e. the wall

00468 of the base 13 goes clearly over the top of the ceiling 19

00469 beyond. In this way, a pot cavity 45 is created

00470 circumscribing collar 46. The opening of the pot cavity 45 is

00471 closed by a clip-on cap 47. That is zen

00472 tral perforated. The corresponding holes carry the cover

00473 characters 48. The cap 47 protects the valve body and

00474 secures him against falling out. 00475

00476 Between the inside of the ring web 43 and the jacket wall

00477 of the base 13 remains an annular gap 49. This connects

00478 the zone D with the annular interior 50 of the bellows B- 00479

00480 The screw cap 40 lies outside the bellows receiving space.

00481 with the top of the bottom 14 against the corresponding

00482 end face 51 of the outer housing 1. As a result

00483 is a seal c or better screw limitation. 00484

00485 The base 13 one in the direction of the footprint of the

00486 Spenders Sp opening. 00487

00488 The function and use of this dispenser Sp are as follows

00489 briefly explained. 00490

00491 If the dispenser Sp is loaded, it becomes a portioned delivery

00492 of its content a force in the direction of arrow P on the

00493 headpiece 7 exercised. This also leads to an overflow

00494 fen of the base 13 through the inner housing 2, but not now

00495 in the sense of a relative displacement between the cylinder and

00496 a counter-piston, but in the sense of a volume reduction

00497 tion of zone D of the donor building up the excess air pressure

00498 This can be made available through the entire

00499 the Hubes happen or by going through a Teilhu

00500 bes the same. In Figure 6 there is maximum compression

00501 shown by the folds of the bellows B bony

Place 00502 on top of each other. The volume of zone D is reduced 00503 there. The portion in the bellows can be

00504 gap 49 breathe. The compressed, trapped air practices

00505 a pressure on the back 10 of the transport piston 8.

00506 the latter pushes mass 3 over the mouthpiece opening 4

00507 molded from. The operation takes place against the reset

00508 by force acting as a compression spring

00509 sealed bellows. 00510

00511 If the operating surface 6 is now released, the pushes

00512 spring force of the bellows the inner housing 2 again in the direction

00513 of arrow x. 00514

00515 A certain slight sagging movement of the pasty mass 3 and

00516 of the transport piston 8 bring an advantageous secondary effect.

00517 fect by an approximately protruding residual excess mass

Suck 00518 of the strand through the mouthpiece opening 4. Otherwise

00519 is the air cushion through valve V against

00520 give way to the air because the air between the back

00521 page 10 and the top of the bottom 14 reducing axial

00522 distance creates such a high air cushion that daε

00523 folding valve tightly against the from the edge of the air

00524 outlet opening 24 formed valve seat surface is pressed. 00525

In return, over 24, the air balance to the extent of

00527 volume volume delivered. In its stroke limit

00528 resigned basic position, the inner housing 2 for

00529 the next output stroke will be used etc. 00530

00531 One part of the screw

00532 unscrewed cap 40 forming bottom 14, and a new one

00533 Refill cartridge inserted. This is conveniently done with

00534 downward dispenser head. By introducing

00535 the screw cap 40 is screwed on to the bellows B.

00536 separate training of the same in docking assignment to the carto

00537 εche respectively to the wall section 2 '. Zone D is

00538 hermetically sealed. One when the advance

00539 εprungε 42 resulting pre-compression in zone D

00540 contributes to the formation of a pressure cushion stock. The donor

00541 is ready for use. 00542 The in the above description, the drawing and the

Features of the invention disclosed in claims can be both

00544 individually or in any combination for entangling

00545 tion of the invention. All disclosed

00546 features are essential to the invention. In the disclosure of the 00547 application, the disclosure content of the

00548 priority documents included (copy of

00549 advance booking) included in full.

Claims

00550 Claims: 00551

00552 1. Dispenser (Sp) for dispensing pasty masses (3), as with

00553 game toothpaste, with a mouthpiece opening (4)

00554 and a head piece (7) forming an actuating surface (6)

00555 and one step by step from the air pressure loading

00556 Tranε- migrating in the direction of the mouth opening (4)

00557 port piston (8) with its front (9) the mass (3)

00558 pushes forward, characterized in that the trans

00559 port piston (8) according to one when actuated on the rear side

00560 Transport piston (8) built up air pressure moves iεt. 00561

00562 2. Dispenser according to claim 1 or in particular according thereto, thereby

00563 characterized in that the air pressure is built up by

00564 approach of the rear (10) of the transport piston (8)

00565 a counter-piston (11) fixed to the housing, the space (12)

00566 between the two pistons (8, 11) due to a

00567 distance of the pistons (8), (11) opening valve (V)

00568 can be connected to the outside air. 00569

00570 3. Donor according to one or more of the previous applicants

00571 sayings or in particular according thereto, characterized in that

00572 that the counter-piston (11) on a base (13) of an external

00573 housing (1) sits relative to which an inner housing (2)

00574 can be moved against the spring load such that the

00575 socket (13) into the lower end of the actuating surface 00576 before (6) over the upper edge (28) of the outer housing (1) 00577 protrudes inner housing (2).

00578

00579 4. Dispenser according to one or more of the preceding

00580 sayings or in particular according thereto, characterized by a

00581 compression spring (27) between the lower edge (29) of the inner housing

00582 (2) and bottom (14) of the outer casing (1). 00583

00584 5. Donor according to one or more of the previous applicants

00585 sayings or in particular according thereto, characterized in that

00586 that bottom (14) and base (13) of the outer housing (1) on the

00587 lower end of the casing wall (15) can be screwed on. 00588 00589 6. Dispenser according to one or more of the previous applicants

00590 sayings or in particular according thereto, characterized in that

00591 that

00592 the inner end of the compression spring (27) from a ring-shaped

00593 migen leadership piece (30) is overlaid. 00594

00595 7. Dispenser according to one or more of the previous applicants

00596 sayings or in particular according thereto, characterized in that

00597 that

00598 the cross section of the guide piece (30) is U-shaped

00599 and the lower edge (29) of the inner housing (2) on the

00600 U-web (32) sits on. 00601

00602 8. Dispenser according to one or more of the preceding

00603 sayings or in particular according thereto, characterized in that

00604 that

00605 the lower edge (29) of the inner housing (2) from the pressure

00606 the (27) against a stop (33) of the outer housing (1)

00607 is pressed. 00608

00609 9. Dispenser according to one or more of the preceding

00610 sayings or in particular according thereto, characterized in that

00611 that

00612 the stop (33) in longitudinal guide ribs (34) for the

00613 inner housing (2) continues. 00614

00615 10. Dispenser according to one or more of the preceding

00616 claims or in particular according thereto, characterized in that

00617 that

00618 the valve (V) in the ceiling (19) of the base (13), the

00619 designed as a downward indentation of the bottom (14)

00620 is. 00621

00622 11. Dispenser according to one or more of the preceding

00623 claims or in particular according thereto, characterized in that

00624 that

00625 the ceiling (19) is framed by a piston ring and this

00626 forms this with the counter-piston (11). 00627 00628 12. Dispenser according to one or more of the preceding

00629 claims or in particular according thereto, characterized in that

00630 that

00631 the valve closure body (22) of the valve (V) via webs

00632 (25) is connected to the piston ring. 00633

00634 13. Cartridge-shaped inner housing (2) for use in

00635 a donor according to claim 1, characterized in that

00636 a wall protruding from the transport piston (8)

00637 cut (2 ') the housing wall the cylinder space (12) for one

00638 counter piston retractable there from the lower end (11)

00639 forms. 00640

00641 14. Cartridge-shaped inner housing according to claim 13, characterized

00642 is characterized by a funnel-shaped counter-piston inlet

00643 cut (35) at the lower edge (29) of the sleeve-shaped housing

00644 wall. 00645

00646 15. Dispenser (Sp) for dispensing pasty masses (3), as with

00647 for example toothpaste, with a head (7) and a mouthpiece opening (4) 00648 and an actuating surface (6)

00649 one step by step from the air pressure load

00650 in the direction of the mouthpiece opening (4)

00651 ben, the front (9) of the mass (3) in front of it

00652 pushes, characterized in that to generate the

00653 air pressure, a bellows (B) is provided, which attaches to the

00654 lower edge (29) of the wall section (2 ') of the inner housing

00655 ses (2) and which an air inlet valve (V)

00656 is assigned. 00657

00658 16. Dispenser, in particular according to claim 15, characterized

00659 shows that the air inlet valve (V) on a

00660 housed (2) overflown base (13), which one

00661 retaining projection (44) for the upper edge (41) of the bellows (B)

00662 trains. 00663

00664 17. Dispenser according to one or more of the preceding

00665 claims or in particular according thereto, characterized in that

00666 that the base (13) from the bottom (14) of a screw cap (40) 00667, on which floor (14) the lower edge (38)

00668 of the bellows (B) sealingly supports. 00669

00670 18. Dispenser according to one or more of the preceding

00671 claims or in particular according thereto, characterized in that

00672 that the bellows (B) is designed as a bellows and the

00673 return spring of the inner housing (2).