CA2167799A1 - Lever-operated pump - Google Patents
Lever-operated pumpInfo
- Publication number
- CA2167799A1 CA2167799A1 CA002167799A CA2167799A CA2167799A1 CA 2167799 A1 CA2167799 A1 CA 2167799A1 CA 002167799 A CA002167799 A CA 002167799A CA 2167799 A CA2167799 A CA 2167799A CA 2167799 A1 CA2167799 A1 CA 2167799A1
- Authority
- CA
- Canada
- Prior art keywords
- pump
- hand lever
- lever actuated
- pump according
- actuated pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1001—Piston pumps
- B05B11/1004—Piston pumps comprising a movable cylinder and a stationary piston
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1001—Piston pumps
- B05B11/1009—Piston pumps actuated by a lever
- B05B11/1011—Piston pumps actuated by a lever without substantial movement of the nozzle in the direction of the pressure stroke
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1073—Springs
- B05B11/1074—Springs located outside pump chambers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1073—Springs
- B05B11/1077—Springs characterised by a particular shape or material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1095—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle with movable suction side
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0027—Means for neutralising the actuation of the sprayer ; Means for preventing access to the sprayer actuation means
- B05B11/0032—Manually actuated means located downstream the discharge nozzle for closing or covering it, e.g. shutters
Landscapes
- Reciprocating Pumps (AREA)
- Closures For Containers (AREA)
- Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
- Mechanically-Actuated Valves (AREA)
- External Artificial Organs (AREA)
Abstract
The invention relates to a hand lever actuated pump (1) for delivery of fluid or paste-form media, comprising a pump chamber (10) which has an inlet valve (11) and an outlet valve (12), further comprising a pump piston (5) which cooperates with a pump cylinder (6), and comprising a cover base (72) for a withdrawal opening of a storage vessel, the cover base (72) being penetrated by a suction pipe (13), and comprising a return spring. In order to find a simplest possible structurally reliable construction, the invention proposes that the return spring abuts against the cover base (72) on the storage space side.
Description
2 1 6779~
~, HAND LEVER ACTUATED PUMP
The invention relates to a hand lever actuated pump for delivery of fluid or paste-form media, comprising a pump chamber which has an inlet valve and an outlet valve, further comprising a pump piston which cooperates with a pump cylinder, further comprising a cover base for a withdrawal opening of a storage vessel, on which the pump may be placed, the cover base being penetrated by a suction pipe, and a return spring being provided.
A pump of this kind is known for example from PCT Application W0 92/04128. The disclosure content of the above-mentioned PCT
Application is also included in the disclosure of the present application as to its complete content.
For a pump of this kind, the technical problem is to find a simplest possible construction, which is however structurally reliable.
2 ! 677S9 -In regard to the problem identified above, the invention proposes that the return spring be supported on the cover base on the storage space side. According to the invention, the return spring is thereby incorporated in the storage vessel. The construction of the pump above the cover base may thereby be made smaller or the space above the cover base may also be used for a similarly structurally sized pump cylinder or pump piston. This latter is for example of importance when relatively great delivery quantities require to be achieved.
The arrangement described is also further advantageous in regard to assembly. The spring may be inserted against the base from below. No spring requires to be mounted above the cover base, between the movable components of the pump. The claimed embodiment is particularly advantageous when a lifting and lowering of the suction tube is achieved together with the movement of the pump piston or of the pump cylinder. Furthermore, the return spring may in this case be supported on the suction tube or on a suction tube mounting. When the pump is moved, the return spring is therefore compressed against the cover base.
It is especially advantageous and preferred within the ambit of the invention for the return spring to be formed as a bellows. In this regard, the bellows may be for example a bellows formed by the plastics injection moulding process. It is further preferred for the bellows to be formed in this case with a closed external wall, it being however further preferred that in the cooperation between the cover base and the return spring or the return spring of the bellows and/or in the cooperation between the suction tube or the suction tube mounting and the return spring of the bellows, through openings are provided for venting the storage space. In this regard, the construction may in particular also be formed so that the venting passages are only opened in the course of a pumping action. For example, in this connection, a circumferential shoulder may be provided on the cover base, projecting into the storage space, against which 2 1 6779q -shoulder a lower fold of the bellows engages, and in addition, a cup-shaped wall may be provided at a spacing from the circumferential shoulder, against which wall a projecting upper lip of the bellows abuts, which lip is raised from this wall on actuation of the pump and thereby opens an air path along which air may flow into the interior of the storage vessel from above through the cover base, in so far as an opening is provided in the cover base.
In particular it is preferred for a suction tube mounting to be formed integrally with the pump piston or with the pump cylinder.
The cover base may also be part of a screwcap or retaining cap. In a further embodiment, the invention provides for the screwcap or retaining cap to consist of a mounting receptor and an insert portion disposed on the storage space side, which insert portion forms a retaining means or screwthread means. Preferably, the insert portion is in addition formed from a soft PVC or similar material, which also acts as a seal when the retaining cap or screwcap is screwed onto or retainingly connected with a neck of a storage container. An end face of the neck then abuts on the soft PVC.
In a further subject of the invention, in which the cover base and the opening for penetration of a suction tube are found to be unnecessary, which subject is therefore also of importance without these features, it is preferably provided that the pump piston is formed as a continuous structure having a bent path and the pump cylinder is arranged to be displaceable in a substantially vertical direction in a neck region of the pump. According to the invention, the pump piston has therefore been made longer, and moreover by an around-a-corner configuration of the pump piston. Because of this, it is possible to locate the pump cylinder in the neck region of the pump and to move it substantially vertically relative to the fixed piston.
The stroke of the pump is in this case effected only in respect of the section of the bent piston which likewise extends substantially vertically - in a preferred embodiment.
It is further proposed for the piston or the vertically extending section of the piston to be substantially widened shortly before the end of the piston directed towards the cylinder (and to terminate in sealing lips which cooperate with an internal wall of the pump cylinder). By this, a relatively larger space may be formed by a pumping movement of the pump cylinder, the space being filled with medium, which medium may then be forced into the piston, into the region of smaller cross-section. This also reinforces the objective of a relatively great output quantity for each pump movement. Also the structural enlargement required for a relatively great output quantity (here enlargement of the end of the pump piston) is transferred into the neck region of the pump.
Such a construction proves advantageous also from the point of view of centre of gravity. It is in addition significant that the hand lever which operates on the pump cylinder, as further described below, allows a relatively great feed path in the vertical neck region of the pump. The transfer ratio is also improved.
In a further embodiment, it is provided that the outlet valve from the pump chamber forms directly a media outlet opening of the pump. In contrast to known spray pumps, substantially no additional exit nozzle is provided in the flow direction after the outlet valve from the pump chamber. It is also preferred for a suction pipe to end in the pump chamber in substantially straight-line continuation with penetration of a pump cylinder base. The suction pipe is thereby connected directly to the base of the pump cylinder. It may be provided that the suction pipe executes the vertical movement of the pump cylinder with the cylinder during the pumping stroke. If the suction pipe is formed sufficiently long and has to some extent an excess of length which curves around in the lowest or deepest position of the suction pipe, in the floor region of the media storage container on which the pump is mounted, no losses of any kind are then involved.
Alternatively, it is also possible to provide an intermediate - 21677~9 section, on which tube sections forming a suction tube are telescopically movable relative to one another. It is also further possible to suck the media storage container as good as completely empty with the pump. On the other hand, the pump construction described here is also however not limited to storage containers which are to be sucked empty by a suction pipe. Naturally, a storage container with a follow up or tailings piston may also be provided.
In further detail, it is also preferably the case that a radially projecting collar is provided on the suction tube or on a section in prolongation of the suction tube at a location before the base of the pump cylinder, to create an engaging space between the base of the pump cylinder and the collar for a short lever arm of the pump handle lever, for carrying out a pump movement. The short lever arm of the pump hand lever thus acts directly on the base of the pump cylinder for an output movement; in the case of a reverse movement, in which medium is sucked out of the storage container, the arm is by contrast effective on the suction tube or on a prolongation of the suction tube by way of the radial collar mentioned.
In a further preferred embodiment it is proposed that a pump housing, which the pump comprises, has a horizontal division, the piston being secured in the one part of the pump housing and the cylinder in the other part of the pump housing. By pump housing, there is here understood the essential structure of the pump, thus the securing and mounting of the exit nozzle, the exit valve, the pump piston and the pump cylinder, or in any case, some of these components. The division is preferably provided in the neck region of the pump. In an upper pump portion formed by the division, a partial section of the pump piston is also preferably integrally formed.
In regard to a further simplification, in particular of manufacture, it is also to be recommended that the outlet valve be disposed in a substantially linear vertical prolongation of the inlet valve. The outlet valve is thus located in the knee region of the ..... ~
pump piston. In this case, the pump piston may be likewise divided into two sections, one of which is effective in regard to the pump chamber, namely disposed before the outlet valve in the flow direction, and a further partial section, which continues in the flow direction after the outlet valve. This section extends to an exit nozzle from the pump.
The pump piston is preferably also provided with a substantially smaller cross-section in the second partial portion which extends to the exit nozzle, than its cross-section in the partial portion located before the outlet valve in the flow direction. By this latter measure, outflow of fluid is avoided, fluid which remains in the partial section of the pump piston downstream of the outlet valve, after a pump actuation. The fluid is held therein by capillary forces. The outlet valve is in particular preferably formed by a valve plug moulded into the pump housing, which cooperates with a sealing lip engaging against its periphery. The sealing lip abuts in this connection against the periphery with pre-stress.
In further detail, it is also recommended for the sealing lip to be moulded onto the vertical partial section of the pump piston.
The sealing lip is in this connection preferably moulded onto an insert portion, and especially an insert in the vertical partial section of the pump piston. This insert portion may have a cup-shaped enlargement at its other end section, the cup edges being formed as sealing lips, for cooperation with an internal surface of the pump cylinder. For venting and sealing the pump with respect to the storage container, it is further provided that between the connecting section in which the lift pipe is received and a mounting base of the pump, a seal is formed. Since the connecting section moves relative to the mounting base on actuation of the pump, the seal opens on actuation of the pump. In addition, the spring of the pump lever acts on the seal in the non-actuated condition by way of the intermediate section, so that sealing is positively assured by this in the non-actuated condition.
.,_ In optimisation of the construction of the hand lever, it is further proposed for this to have a substantially V-shaped configuration and to have a connecting region between the V-limbs located above the bearing axis in the unloaded condition. This brings on the one hand an advantageous actuation movement and on the other hand a greater proximity of the individual actuation surfaces in the region of the outlet nozzle. There is thus present an improved accuracy of aim. The resulting structural arrangement also allows use of an advantageous further embodiment, in which the spring extends from the highly stable connecting region. The spring which is itself thus also lengthened, brings in addition a more uniform spring characteristic. On the pump housing side, use of almost the entire transverse width of the pump head is facil;tated.
In an advantageous embodiment, the opposite support for the spring (which may suitably also be formed as a dual structure) is realised on the upper pump portion. For mounting, there is required only introduction of the hand lever into the region of the horizontal division of the pump housing. By closing the pump housing, the bearing pin is held captive in its recess and the spring is held in a position which is correct for its support. This may be accomplished without the use of tools.
It is further proposed that the outlet following on the outlet valve is formed to have the shape of an oblong hole in cross-section.
In this manner, the transfer of the medium to the outlet is achieved by way of a flow path which is substantially the same size in cross-section. The oblong hole-shaped cross-section is substantially horizontally oriented. This leads to a reduced constructional height of the pump. An especially advantageous embodiment then consists in the oblong hole-shaped cross-section of the substantially semi-circularly curved outlet extending about the centre line of the outlet nozzle which is located at the centre of curvature. In this way, the rather narrow head width of the pump is best used.
..._ The invention is further described below with respect to the accompanying drawings, which however show only an embodiment.
Figure 1 shows a vertical section through a first embodiment of the pump;
Figure 2 shows the pump according to Figure 1 in the actuated condition;
Figure 3 shows a spray pump in vertical section in a second embodiment;
Figure 4 shows the pump according to Figure 3 in the actuated condition;
Figure 5 shows a vertical section through a further embodiment of the spray pump, in the non-actuated condition;
Figure 6 shows a vertical section through the spray pump according to Figure 4 in the actuated condition;
Figure 7 shows a vertica1 section through a final embodiment of the spray pump, in the non-actuated condition;
Figure 8 shows a vertical section through the spray pump according to Figure 7, but in the actuated condition, Figure 9 shows the hand lever in perspective representation, Figure 10 shows the spray pump in front view, and Figure 11 shows the spray pump in a vertical section according to line XI-XI of Figure 7;
Figure 12 shows a vertical section through a further ._ g embodiment of the pump, with the return spring arranged associated with the storage container;
Figure 13 shows the pump according to Figure 12 in the actuated condition.
There is shown and described a pump 1 having a hand lever 2 for actuation of the pump. The hand lever 2 is mounted on a pump housing 4 by means of a bearing pin 3 in a bearing housing 3' and the hand lever is spring-biassed in the direction of its normal or initial posltlon.
The pump 1 has a pump piston 5, which is fixedly formed. The pump piston 5 cooperates with a pump cylinder 6, which is actuatable for a pump movement by means of the hand lever 2 (see for example Figure 2).
The pump piston 5 has a substantially vertically extending portion 7 and a substantially horizontally extending portion 8. The portions 7 and 8 merge into one another by way of a knee 9. In the example shown, the bend or the knee 9 is formed to be substantially right-angled.
A pump chamber 10 is formed by the interior of the pump piston 5 and in part by the interior of the pump cylinder 6. The pump chamber 10 has an inlet valve 11 and an outlet valve 12. The inlet valve 11 is located in the base of the pump cylinder 6, in which connection particular reference may also be made to PCT Application No.
W0 22/04128 already mentioned further above.
A lift pipe 13 is also provided, this passing through a sealing collar 14. In the region where the pipe 13 passes through, a conventional sealing arrangement or an air-bleeding arrangement may be provided; particular solutions will be further described subsequently.
-In its further extent, the lift pipe 13 has a radially projecting collar 15 and opens at reference 16 directly into the pump chamber 10, passing through the base 17 of the pump cylinder 6. A
short lever arm 18 of the hand lever 2 engages the lift pipe 13 between an outer surface of the base 17 of the pump cylinder 6 and an associated outer surface of the collar 15.
The outlet valve 12 is formed as a so-called self-closing closure. In this regard, reference may also be made to German Patent Application No. P 42 14 153.2, the disclosure contents of which are incorporated in the present application.
In particular, the pump piston 5 has a forward connecting portion 19, over the exterior of which a connecting neck 20 of the self-closing valve is engaged. A closure plug 22 is formed integrally with a base plate 21 of the self-closing valve, the plug 22 passing through a closure base 23. On the outside, a closure cover 25 engages over an end edge 24 of the closure base 23 which continues in an outward direction in the shape of a cup, the closure cover 25 being clippingly retained on the closure base or on the cup-shaped projection of the base. An opening 26 is left in the closure cover 25, the opening 26 being closed in the inactive condition by the closure plug 22.
On actuation of the pump 1, the pump lever 2 is moved towards the lift pipe 13, the pump cylinder 6 then moving upwards and the pressure in the pump chamber 10 increasing. By this, the closing force on the inlet valve 11 is increased, while the outlet valve 12 opens and medium is delivered. On reverse movement, which is effected by means of the spring 27 formed integrally on the hand lever 2, a reduced pressure prevails in the pump chamber 10, by which the closure of the outlet valve 12 is strengthened, while the inlet valve 11 opens and medium is sucked up from a storage container - not shown.
It may also be seen that in regard to the vertical portion 7 of the pump piston 5, this widens out at the end of the piston associated with the base 17 of the pump cylinder 6, and terminates at a sealing lip 28, which cooperates with a (vertical) inner surface 29 of the pump cylinder 6. In the embodiment, the enlargement amounts to more than one-half of the diameter of the pump piston 5. A
correspondingly large pump volume is achieved when the pump cylinder 6 is drawn back (as shown).
It is also further to be seen that external guide grooves 30 are formed in the pump cylinder 6, which cooperate with a projection 31 of the pump housing.
In Figure 2, the pump 1 described above is shown in the actuated condition. The pump cylinder 6 has been driven vertically upwards relative to the fixed pump piston 5, and in particular with respect to the vertical portion 7 of the piston 5, and the closure cover 25 has been raised from the closure plug 22, so that fluid may exit.
For the embodiment according to Figure 3, it is first of all to be noted that the horizontal portion 8 of the pump piston 5, on its upper side, is moulded directly into the upper housing cover 32, and that the upper housing cover 32 is an integral part of the pump piston 5. The boundary wall of the vertical portion 7 of the pump piston 5 ends at one end, reference 33, directly at the housing cover 32. On the opposite side, a bend is formed which results in the knee 9.
Furthermore, the pump cylinder 6 is provided in a freely movable manner, being guided only by an insert 34 in the vertical portion of the pump piston 5, which insert forms the widened-out region and the sealing lips 28. The insert 34 is clamped in position or is pressed in.
The pump cylinder 6 is also formed integrally with a pipe portion 35, on which in addition the projecting collar 15 is also 2 1 6779~
._ formed. A seal 36 is received in a corresponding groove on a lower surface of the collar 15, the seal acting on the upper surface of a downwardly-opening cup-shaped insert 38. The pipe portion 35 continues downwardly via the collar 15 further into the connecting portion 37. The lift pipe 13 is secured in this connecting portion 37. The connecting portion 37 is further provided in such an axial length that a positive guidance continues to be effected in the cup-shaped portion 38 even on actuation of this spray pump (see Figure 4).
Furthermore, in the embodiment according to Figures 3 and 4, the construction of the outlet valve 12 is of special importance. A
closure plug 39 is provided which is held in a carrier portion 41 by means of integral ribs 40. Because of the ribs 40, longitudinal channels 42 are formed, through which the fluid may flow around the closure plug 39. At its forward end region, the closure plug 39 is surrounded by a sealing lip 43, which engages against a radial circumferential surface of the closure plug 39 with positive pre-stress. On actuation of the pump 1, the sealing lip 43 expands substantially radially outwards in an elastic manner because of the pressure of the fluid and opens a path for outflow. It is also of significance that the sealing lip 43 has, over a predetermined length, an extent which is concentric with the closure plug 39, and that it terminates at its end substantially in the same plane as the closure plug 39. The sealing lip 43 is in addition formed on a component 44 which is itself in the shape of a cup, component 44 being clippingly held on the carrier portion 41. For this, the carrier portion 41 has a radially circumferential shoulder 45 on a peripheral surface, around which there engages a hook-shaped inwardly bent end 46 of the portion 44.
In Figure 5, a further embodiment of the pump 1 is shown.
For the embodiment according to Figure 5, a horizontal division of the pump housing 46 is made. A part-section 48 of the _ fixed pump piston 5 is formed integrally in an upper pump portion 47 and moreover in such a manner that a housing cover 49 also defines an upper wall of the part-section 48 of the pump piston 5. In addition, a lower wall 50 is provided, which is likewise formed integrally in the upper pump portion 47. An outlet nozzle 51 is located at the forward outlet end of the pump piston 5.
The horizontal division of the pump housing 46 is in particular effected by a lower pump portion 52 having a neck section, over a part of the exterior of which a projecting sleeve 54 of the upper pump portion 47 engages. A step 55 is also provided in the upper pump portion 47, against which an end face of the neck section comes to rest. The upper pump portion 47 and the lower pump portion 52 are also connected to one another by pressing together.
The lower pump portion 52 also receives a mounting base 53, in which the pipe portion 35 is guided. The lift pipe 13 is clampingly held in the pipe portion 35.
20The construction of the pump cylinder 6 and the portion of the pump piston 5 cooperating with the pump cylinder is as described above.
The vertical section 7 of the pump piston 5 has an insert portion 56, which generally extends only in the vertical section of the pump piston 5, up to the knee 9 of the piston. A sealing lip 57 is provided at the upper end of the insert portion 56, the lip abutting against the radial periphery of a valve plug 58, and the valve plug projecting outwardly from the housing cover 49 into the pump piston 5. The valve plug 58 in cooperation with the sealing lip 57 forms in this case the outlet valve 12 from the pump chamber 10. At the other end of the insert portion 56, there is formed on the insert portion the sealing lip 28 already described further above.
The bearing pin 3 of the hand lever 2 is received on the one hand in a U-shaped recess 59 of the lower housing portion 52 and on the _ other hand is retained in this by means of a flange 58, which likewise has at its end a U-shaped concavely rounded formation 59'. From the point of view of assembly, the hand lever 2 with its pin 3 may therefore be easily inserted into the lower housing portion 52 and is then held in its mounting by pressing on of the upper housing portion.
A substantially conical surface designated by reference 60 is in addition provided in the mounting base 53, this surface cooperating with a sealing bead 61 in the pipe section 35. In the non-actuated condition, as it is shown in Figure 5, the spring 27 of the hand lever 2 acts on the ring 15 by means of the short lever arm 18 and thereby effects positive sealing of the storage container. In the actuated condition, as it is shown in Figure 6, as already indicated above, venting paths are provided to the storage container, so that the quantities discharged may be replaced by air flowing back in, without reduced pressure developing in the storage container.
As an alternative to the embodiment shown, or optionally in addition to it, it may be further provided for the pipe portion 35 to be formed in a conically tapering manner throughout the region of the portion which cooperates with the mounting base 53. This then has the resu1t that in the non-actuated condition according to Figure 5, there results a positioning and centering in the thickened region of the cone, while in the actuated condition according to Figure 6, a distinct gap is defined from the oppositely-located collar or from the sealing collar 14 of the mounting base 53. It is also further favoured for the mounting base 53 to be integrally formed with the lower pump portion 52.
The final exemplary embodiment shown in Figures 7 to 11 embodies a spray pump which in principle and also in part in structure has the same construction as described. The reference numerals are used in the corresponding sense, in part without repetition in the text. Thus the hand lever 2 is provided in a constructionally different shape in respect of its profile, no longer as a right-angle;
it has rather a substantially V-shaped configuration. The two V-limbs diverge from one another towards their free ends. The connecting region 63 of the two arm portions a, b takes up in the unloaded condition of the hand lever 2 which is subject to the action of a spring, a disposition which is closest to the horizontally extending section 8 of the knee 9. The nearness of the connecting region 63 to the outlet nozzle 51 is also noteworthy. The one limb a of the hand lever 2 functioning as a withdrawal tap is located therefore at the beginning of its actuation closer to the starting position of the spray jet; this increases the accuracy of aim during use. As may be seen from Figure 7, the connecting region 63 of the V-limbs a, b extends far above the bearing pin 3. The bearing pin 3 is located substantially in the central region, i.e. at one-half the length of the limb b forming the shorter lever arm 18 of the hand lever 2, and also in the transition region of an obtuse-angled bend extending steeply with respect to the vertical axis of the pump 1.
The spring 27 which permanently loads the hand lever 2 in the direction of its starting position now no longer extends into the angle space of the hand lever 2; it is rather formed peripherally and its working portion is provided externally of the hand lever. It is rooted in the said connecting region 63 and extends in a diverging manner from the bearing-mounted limb b of the hand lever 2. There is in question the provision of a pair of similarly formed leaf spring type members, which cross the vertically extending region of the pump chamber 10 to the exterior of the chamber, in a slopingly extending manner. The springs 27 then find their opposite support 64 on the upper pump portion 47 of the spray pump. Supportingly active are the lower end faces of a vertical flange, which end faces are oriented to correspond to the inclination of the leaf spring type members (springs 27). When the hand lever 2 is actuated, the upper sides of the springs 27 slide over the said end faces substantially in the spray direction. There results a very uniform spring characteristic.
The more detailed configuration of this hand lever is apparent _ from Figure 9. In this drawing, the springs 27 also take up the slightly curved condition which they have on insertion; in the sense of a positive pre-stress, they have however in the undeformed condition, a substantially straight orientation. From the figure in question, the duplication of the short lever arm 18 of the hand lever 2 will also be further apparent. The limb b in question has a fork-shaped structure open towards the free end. The fork space is bridged on a shortest path in a transversely directed manner by the bearing pin also formed with it. The fork space may, as shown in Figure 9, end well before the connecting region 63, or alternatively, as shown in Figure 8, it may continue into this region 63. In the latter case, the material saving factor is optimised.
A further constructional difference in the final embodiment exists in regard to the manner of sealing at the pipe section 35.
This is here based on a pure conical seal. The sealing bead 61 shown in Figure 5 is therefore not necessary. The sealing ring 36 used in the previous embodiment may also be obviated, so that in this regard, the number of components may be further reduced. The pipe portion 35 standing in overlapping relationship with the similarly formed mounting base 53 is clearly reduced compared with the clear measure of the pillar-shaped penetration in the mounting base 53, so that also in this case, by lifting the cone 65 from its corresponding valve seat surface 66, the desired vent path to the container interior is made available, but on release of the hand lever 2, this path is again immediately closed off.
Underneath the mounting base 53, there is added a downwardly extending annular wall 67. The outer side of this tapers towards its free end, so that this annular wall 67 enters into the mouth of the container holding the medium to be delivered as a sealingly acting annular cone. The seal at this sealing location is effected by the screwcap used in all of the embodiments, which draws the pump 1 against the periphery of the mouth of the vessel or storage container. It engages over a peripheral annular collar 68 of the pump housing. The screwcap is snapped onto this annular collar 68.
21 6779~
A final structural difference from the preceding embodimentsconsists also in a special cross-sectional configuration of the horizontally extending section 8 of the knee 9. In place of the otherwise circularly-rounded cross-section of this channel-form section 8, it is now provided that the flow path or outlet leading to the outlet valve 12, seen in cross-section, is formed in the shape of an oblong hole or slot. By this, there is provided practically the same flow cross-section as at the opened outlet valve 12. Reference to Figure 11 makes clear that this oblong hole-shaped cross-section extends in the form of an arc. The oblong hole-shaped cross-section extends curved in semi-circular form about the outlet nozzle 51 or the centre line of this, which is located at the centre of curvature of this semi-circle. The arc-shaped passage thus created, the two ends of which are directed downwardly, is located to the upper side of this centre of curvature.
The outlet nozzle 51 is finally associated with a further nozzle pipe R which may be brought into use selectively. There is in question a cup-shaped formation on a visor flap 69. This is connected by way of a film hinge 70 to a rotary closure 71 which may be mounted in the nozzle region. When the visor flap 69 hangs down, a denser spray jet exits from the outlet nozzle 51; by contrast in the upwardly secured position of use of the nozzle pipe R, a more foamed or diffuse spray exits from the nozzle (see Figure 7, chain dotted representation). The nozzle pipe R is described in unpublished Patent Ap~lication No. P 43 24 607.9. The disclosure content of the above-mentioned patent application is incorporated as to its full content in the disclosure of the present application, this both in respect of the particular sieve construction as well as in respect of the variations in the conically tapering outlet cross-section and the rotary closure.
The pump shown in Figure 12 corresponds to the pump shown in Figure 3 apart from the screwcap and the return spring.
As shown, the hand lever 2 is formed without an integral return spring. Neither is any return spring located above a cover base 72. The return spring is rather formed as a spring bellows 73, which extends to a storage vessel, not shown, and, at its upper end, abuts against the cover base 72 or an insert portion 78, which is subsequently to be described in more detail.
The bellows spring 73 is in particular a plastics bellows spring made by the injection moulding process, for example from polypropylene or polyethylene.
The suction pipe mounting 74 formed integrally with the pump cylinder 6 has at its lower end, a retaining seating 75, against which a lower inwardly directed end fold 76 of the bellows spring 73 abuts, on an upper retaining step. Fluting 77 or the like is also formed at the lower end of the suction pipe mounting 74, onto which fluting the suction pipe 13 is retainingly pushed. As an alternative to this, an internal mounting is also possible, as shown for example in connection with Figure 3.
In the embodiment, the cover base 72 is part of a screwcap, the screwthread being formed in an insert portion 78. The insert portion 78 forms not only the internal thread for screw mounting on a storage vessel, but also an upper sealing surface abutting against the cover base 72 and in addition, it forms a guide 79 for the suction pipe mounting, which guide is integral with the previously mentioned components. By comparison of Figures 12 and 13, it may be seen that the suction pipe mounting in the actuated condition is pushed up sufficiently high for the lower end fold 76 of the spring bellows 73 to come approximately into contact with an end face of the suction pipe mounting or suction pipe guide 79. There is in question in the case of the suction pipe mounting 79, a totally tubular guide portion.
Air passage openings are also provided for venting the storage space vessel. In the embodiment, these are grooves, not shown in detail, in an outer surface of the suction pipe mounting 74 and in an -inner surface of the suction pipe guide 79, one or more through openings being also likewise defined between an end surface of the end fold 76 of the spring bellows 73 and the suction pipe mounting 74, so that all air may flow in from above the cover base 72 into the storage vessel, in particular on actuation of the pump in accordance with Figure 13.
Deviating from the embodiment shown, the seal, which when assembled cooperates with an end wall of a bellows of the storage vessel, may also be formed moulded onto the bellows, at upper end fold 80, the seal being provided in the embodiment integrally in the insert portion 78.
In particular then, when the venting paths are provided only on actuation of the pump, but a seal is otherwise created, the spring bellows is also advantageously applied to this sealing, which it also effects by its resilient characteristics.
The features of the invention disclosed in the preceding description, in the drawings and in the claims, may be of importance for the realisation of the invention both individually and also in any desired combination. All features disclosed are relevant to the invention. In the disclosure of the application, there are hereby also incorporated as to their full content, the disclosure contents of the associated/accompanying priority documents (text of the previous application).
~, HAND LEVER ACTUATED PUMP
The invention relates to a hand lever actuated pump for delivery of fluid or paste-form media, comprising a pump chamber which has an inlet valve and an outlet valve, further comprising a pump piston which cooperates with a pump cylinder, further comprising a cover base for a withdrawal opening of a storage vessel, on which the pump may be placed, the cover base being penetrated by a suction pipe, and a return spring being provided.
A pump of this kind is known for example from PCT Application W0 92/04128. The disclosure content of the above-mentioned PCT
Application is also included in the disclosure of the present application as to its complete content.
For a pump of this kind, the technical problem is to find a simplest possible construction, which is however structurally reliable.
2 ! 677S9 -In regard to the problem identified above, the invention proposes that the return spring be supported on the cover base on the storage space side. According to the invention, the return spring is thereby incorporated in the storage vessel. The construction of the pump above the cover base may thereby be made smaller or the space above the cover base may also be used for a similarly structurally sized pump cylinder or pump piston. This latter is for example of importance when relatively great delivery quantities require to be achieved.
The arrangement described is also further advantageous in regard to assembly. The spring may be inserted against the base from below. No spring requires to be mounted above the cover base, between the movable components of the pump. The claimed embodiment is particularly advantageous when a lifting and lowering of the suction tube is achieved together with the movement of the pump piston or of the pump cylinder. Furthermore, the return spring may in this case be supported on the suction tube or on a suction tube mounting. When the pump is moved, the return spring is therefore compressed against the cover base.
It is especially advantageous and preferred within the ambit of the invention for the return spring to be formed as a bellows. In this regard, the bellows may be for example a bellows formed by the plastics injection moulding process. It is further preferred for the bellows to be formed in this case with a closed external wall, it being however further preferred that in the cooperation between the cover base and the return spring or the return spring of the bellows and/or in the cooperation between the suction tube or the suction tube mounting and the return spring of the bellows, through openings are provided for venting the storage space. In this regard, the construction may in particular also be formed so that the venting passages are only opened in the course of a pumping action. For example, in this connection, a circumferential shoulder may be provided on the cover base, projecting into the storage space, against which 2 1 6779q -shoulder a lower fold of the bellows engages, and in addition, a cup-shaped wall may be provided at a spacing from the circumferential shoulder, against which wall a projecting upper lip of the bellows abuts, which lip is raised from this wall on actuation of the pump and thereby opens an air path along which air may flow into the interior of the storage vessel from above through the cover base, in so far as an opening is provided in the cover base.
In particular it is preferred for a suction tube mounting to be formed integrally with the pump piston or with the pump cylinder.
The cover base may also be part of a screwcap or retaining cap. In a further embodiment, the invention provides for the screwcap or retaining cap to consist of a mounting receptor and an insert portion disposed on the storage space side, which insert portion forms a retaining means or screwthread means. Preferably, the insert portion is in addition formed from a soft PVC or similar material, which also acts as a seal when the retaining cap or screwcap is screwed onto or retainingly connected with a neck of a storage container. An end face of the neck then abuts on the soft PVC.
In a further subject of the invention, in which the cover base and the opening for penetration of a suction tube are found to be unnecessary, which subject is therefore also of importance without these features, it is preferably provided that the pump piston is formed as a continuous structure having a bent path and the pump cylinder is arranged to be displaceable in a substantially vertical direction in a neck region of the pump. According to the invention, the pump piston has therefore been made longer, and moreover by an around-a-corner configuration of the pump piston. Because of this, it is possible to locate the pump cylinder in the neck region of the pump and to move it substantially vertically relative to the fixed piston.
The stroke of the pump is in this case effected only in respect of the section of the bent piston which likewise extends substantially vertically - in a preferred embodiment.
It is further proposed for the piston or the vertically extending section of the piston to be substantially widened shortly before the end of the piston directed towards the cylinder (and to terminate in sealing lips which cooperate with an internal wall of the pump cylinder). By this, a relatively larger space may be formed by a pumping movement of the pump cylinder, the space being filled with medium, which medium may then be forced into the piston, into the region of smaller cross-section. This also reinforces the objective of a relatively great output quantity for each pump movement. Also the structural enlargement required for a relatively great output quantity (here enlargement of the end of the pump piston) is transferred into the neck region of the pump.
Such a construction proves advantageous also from the point of view of centre of gravity. It is in addition significant that the hand lever which operates on the pump cylinder, as further described below, allows a relatively great feed path in the vertical neck region of the pump. The transfer ratio is also improved.
In a further embodiment, it is provided that the outlet valve from the pump chamber forms directly a media outlet opening of the pump. In contrast to known spray pumps, substantially no additional exit nozzle is provided in the flow direction after the outlet valve from the pump chamber. It is also preferred for a suction pipe to end in the pump chamber in substantially straight-line continuation with penetration of a pump cylinder base. The suction pipe is thereby connected directly to the base of the pump cylinder. It may be provided that the suction pipe executes the vertical movement of the pump cylinder with the cylinder during the pumping stroke. If the suction pipe is formed sufficiently long and has to some extent an excess of length which curves around in the lowest or deepest position of the suction pipe, in the floor region of the media storage container on which the pump is mounted, no losses of any kind are then involved.
Alternatively, it is also possible to provide an intermediate - 21677~9 section, on which tube sections forming a suction tube are telescopically movable relative to one another. It is also further possible to suck the media storage container as good as completely empty with the pump. On the other hand, the pump construction described here is also however not limited to storage containers which are to be sucked empty by a suction pipe. Naturally, a storage container with a follow up or tailings piston may also be provided.
In further detail, it is also preferably the case that a radially projecting collar is provided on the suction tube or on a section in prolongation of the suction tube at a location before the base of the pump cylinder, to create an engaging space between the base of the pump cylinder and the collar for a short lever arm of the pump handle lever, for carrying out a pump movement. The short lever arm of the pump hand lever thus acts directly on the base of the pump cylinder for an output movement; in the case of a reverse movement, in which medium is sucked out of the storage container, the arm is by contrast effective on the suction tube or on a prolongation of the suction tube by way of the radial collar mentioned.
In a further preferred embodiment it is proposed that a pump housing, which the pump comprises, has a horizontal division, the piston being secured in the one part of the pump housing and the cylinder in the other part of the pump housing. By pump housing, there is here understood the essential structure of the pump, thus the securing and mounting of the exit nozzle, the exit valve, the pump piston and the pump cylinder, or in any case, some of these components. The division is preferably provided in the neck region of the pump. In an upper pump portion formed by the division, a partial section of the pump piston is also preferably integrally formed.
In regard to a further simplification, in particular of manufacture, it is also to be recommended that the outlet valve be disposed in a substantially linear vertical prolongation of the inlet valve. The outlet valve is thus located in the knee region of the ..... ~
pump piston. In this case, the pump piston may be likewise divided into two sections, one of which is effective in regard to the pump chamber, namely disposed before the outlet valve in the flow direction, and a further partial section, which continues in the flow direction after the outlet valve. This section extends to an exit nozzle from the pump.
The pump piston is preferably also provided with a substantially smaller cross-section in the second partial portion which extends to the exit nozzle, than its cross-section in the partial portion located before the outlet valve in the flow direction. By this latter measure, outflow of fluid is avoided, fluid which remains in the partial section of the pump piston downstream of the outlet valve, after a pump actuation. The fluid is held therein by capillary forces. The outlet valve is in particular preferably formed by a valve plug moulded into the pump housing, which cooperates with a sealing lip engaging against its periphery. The sealing lip abuts in this connection against the periphery with pre-stress.
In further detail, it is also recommended for the sealing lip to be moulded onto the vertical partial section of the pump piston.
The sealing lip is in this connection preferably moulded onto an insert portion, and especially an insert in the vertical partial section of the pump piston. This insert portion may have a cup-shaped enlargement at its other end section, the cup edges being formed as sealing lips, for cooperation with an internal surface of the pump cylinder. For venting and sealing the pump with respect to the storage container, it is further provided that between the connecting section in which the lift pipe is received and a mounting base of the pump, a seal is formed. Since the connecting section moves relative to the mounting base on actuation of the pump, the seal opens on actuation of the pump. In addition, the spring of the pump lever acts on the seal in the non-actuated condition by way of the intermediate section, so that sealing is positively assured by this in the non-actuated condition.
.,_ In optimisation of the construction of the hand lever, it is further proposed for this to have a substantially V-shaped configuration and to have a connecting region between the V-limbs located above the bearing axis in the unloaded condition. This brings on the one hand an advantageous actuation movement and on the other hand a greater proximity of the individual actuation surfaces in the region of the outlet nozzle. There is thus present an improved accuracy of aim. The resulting structural arrangement also allows use of an advantageous further embodiment, in which the spring extends from the highly stable connecting region. The spring which is itself thus also lengthened, brings in addition a more uniform spring characteristic. On the pump housing side, use of almost the entire transverse width of the pump head is facil;tated.
In an advantageous embodiment, the opposite support for the spring (which may suitably also be formed as a dual structure) is realised on the upper pump portion. For mounting, there is required only introduction of the hand lever into the region of the horizontal division of the pump housing. By closing the pump housing, the bearing pin is held captive in its recess and the spring is held in a position which is correct for its support. This may be accomplished without the use of tools.
It is further proposed that the outlet following on the outlet valve is formed to have the shape of an oblong hole in cross-section.
In this manner, the transfer of the medium to the outlet is achieved by way of a flow path which is substantially the same size in cross-section. The oblong hole-shaped cross-section is substantially horizontally oriented. This leads to a reduced constructional height of the pump. An especially advantageous embodiment then consists in the oblong hole-shaped cross-section of the substantially semi-circularly curved outlet extending about the centre line of the outlet nozzle which is located at the centre of curvature. In this way, the rather narrow head width of the pump is best used.
..._ The invention is further described below with respect to the accompanying drawings, which however show only an embodiment.
Figure 1 shows a vertical section through a first embodiment of the pump;
Figure 2 shows the pump according to Figure 1 in the actuated condition;
Figure 3 shows a spray pump in vertical section in a second embodiment;
Figure 4 shows the pump according to Figure 3 in the actuated condition;
Figure 5 shows a vertical section through a further embodiment of the spray pump, in the non-actuated condition;
Figure 6 shows a vertical section through the spray pump according to Figure 4 in the actuated condition;
Figure 7 shows a vertica1 section through a final embodiment of the spray pump, in the non-actuated condition;
Figure 8 shows a vertical section through the spray pump according to Figure 7, but in the actuated condition, Figure 9 shows the hand lever in perspective representation, Figure 10 shows the spray pump in front view, and Figure 11 shows the spray pump in a vertical section according to line XI-XI of Figure 7;
Figure 12 shows a vertical section through a further ._ g embodiment of the pump, with the return spring arranged associated with the storage container;
Figure 13 shows the pump according to Figure 12 in the actuated condition.
There is shown and described a pump 1 having a hand lever 2 for actuation of the pump. The hand lever 2 is mounted on a pump housing 4 by means of a bearing pin 3 in a bearing housing 3' and the hand lever is spring-biassed in the direction of its normal or initial posltlon.
The pump 1 has a pump piston 5, which is fixedly formed. The pump piston 5 cooperates with a pump cylinder 6, which is actuatable for a pump movement by means of the hand lever 2 (see for example Figure 2).
The pump piston 5 has a substantially vertically extending portion 7 and a substantially horizontally extending portion 8. The portions 7 and 8 merge into one another by way of a knee 9. In the example shown, the bend or the knee 9 is formed to be substantially right-angled.
A pump chamber 10 is formed by the interior of the pump piston 5 and in part by the interior of the pump cylinder 6. The pump chamber 10 has an inlet valve 11 and an outlet valve 12. The inlet valve 11 is located in the base of the pump cylinder 6, in which connection particular reference may also be made to PCT Application No.
W0 22/04128 already mentioned further above.
A lift pipe 13 is also provided, this passing through a sealing collar 14. In the region where the pipe 13 passes through, a conventional sealing arrangement or an air-bleeding arrangement may be provided; particular solutions will be further described subsequently.
-In its further extent, the lift pipe 13 has a radially projecting collar 15 and opens at reference 16 directly into the pump chamber 10, passing through the base 17 of the pump cylinder 6. A
short lever arm 18 of the hand lever 2 engages the lift pipe 13 between an outer surface of the base 17 of the pump cylinder 6 and an associated outer surface of the collar 15.
The outlet valve 12 is formed as a so-called self-closing closure. In this regard, reference may also be made to German Patent Application No. P 42 14 153.2, the disclosure contents of which are incorporated in the present application.
In particular, the pump piston 5 has a forward connecting portion 19, over the exterior of which a connecting neck 20 of the self-closing valve is engaged. A closure plug 22 is formed integrally with a base plate 21 of the self-closing valve, the plug 22 passing through a closure base 23. On the outside, a closure cover 25 engages over an end edge 24 of the closure base 23 which continues in an outward direction in the shape of a cup, the closure cover 25 being clippingly retained on the closure base or on the cup-shaped projection of the base. An opening 26 is left in the closure cover 25, the opening 26 being closed in the inactive condition by the closure plug 22.
On actuation of the pump 1, the pump lever 2 is moved towards the lift pipe 13, the pump cylinder 6 then moving upwards and the pressure in the pump chamber 10 increasing. By this, the closing force on the inlet valve 11 is increased, while the outlet valve 12 opens and medium is delivered. On reverse movement, which is effected by means of the spring 27 formed integrally on the hand lever 2, a reduced pressure prevails in the pump chamber 10, by which the closure of the outlet valve 12 is strengthened, while the inlet valve 11 opens and medium is sucked up from a storage container - not shown.
It may also be seen that in regard to the vertical portion 7 of the pump piston 5, this widens out at the end of the piston associated with the base 17 of the pump cylinder 6, and terminates at a sealing lip 28, which cooperates with a (vertical) inner surface 29 of the pump cylinder 6. In the embodiment, the enlargement amounts to more than one-half of the diameter of the pump piston 5. A
correspondingly large pump volume is achieved when the pump cylinder 6 is drawn back (as shown).
It is also further to be seen that external guide grooves 30 are formed in the pump cylinder 6, which cooperate with a projection 31 of the pump housing.
In Figure 2, the pump 1 described above is shown in the actuated condition. The pump cylinder 6 has been driven vertically upwards relative to the fixed pump piston 5, and in particular with respect to the vertical portion 7 of the piston 5, and the closure cover 25 has been raised from the closure plug 22, so that fluid may exit.
For the embodiment according to Figure 3, it is first of all to be noted that the horizontal portion 8 of the pump piston 5, on its upper side, is moulded directly into the upper housing cover 32, and that the upper housing cover 32 is an integral part of the pump piston 5. The boundary wall of the vertical portion 7 of the pump piston 5 ends at one end, reference 33, directly at the housing cover 32. On the opposite side, a bend is formed which results in the knee 9.
Furthermore, the pump cylinder 6 is provided in a freely movable manner, being guided only by an insert 34 in the vertical portion of the pump piston 5, which insert forms the widened-out region and the sealing lips 28. The insert 34 is clamped in position or is pressed in.
The pump cylinder 6 is also formed integrally with a pipe portion 35, on which in addition the projecting collar 15 is also 2 1 6779~
._ formed. A seal 36 is received in a corresponding groove on a lower surface of the collar 15, the seal acting on the upper surface of a downwardly-opening cup-shaped insert 38. The pipe portion 35 continues downwardly via the collar 15 further into the connecting portion 37. The lift pipe 13 is secured in this connecting portion 37. The connecting portion 37 is further provided in such an axial length that a positive guidance continues to be effected in the cup-shaped portion 38 even on actuation of this spray pump (see Figure 4).
Furthermore, in the embodiment according to Figures 3 and 4, the construction of the outlet valve 12 is of special importance. A
closure plug 39 is provided which is held in a carrier portion 41 by means of integral ribs 40. Because of the ribs 40, longitudinal channels 42 are formed, through which the fluid may flow around the closure plug 39. At its forward end region, the closure plug 39 is surrounded by a sealing lip 43, which engages against a radial circumferential surface of the closure plug 39 with positive pre-stress. On actuation of the pump 1, the sealing lip 43 expands substantially radially outwards in an elastic manner because of the pressure of the fluid and opens a path for outflow. It is also of significance that the sealing lip 43 has, over a predetermined length, an extent which is concentric with the closure plug 39, and that it terminates at its end substantially in the same plane as the closure plug 39. The sealing lip 43 is in addition formed on a component 44 which is itself in the shape of a cup, component 44 being clippingly held on the carrier portion 41. For this, the carrier portion 41 has a radially circumferential shoulder 45 on a peripheral surface, around which there engages a hook-shaped inwardly bent end 46 of the portion 44.
In Figure 5, a further embodiment of the pump 1 is shown.
For the embodiment according to Figure 5, a horizontal division of the pump housing 46 is made. A part-section 48 of the _ fixed pump piston 5 is formed integrally in an upper pump portion 47 and moreover in such a manner that a housing cover 49 also defines an upper wall of the part-section 48 of the pump piston 5. In addition, a lower wall 50 is provided, which is likewise formed integrally in the upper pump portion 47. An outlet nozzle 51 is located at the forward outlet end of the pump piston 5.
The horizontal division of the pump housing 46 is in particular effected by a lower pump portion 52 having a neck section, over a part of the exterior of which a projecting sleeve 54 of the upper pump portion 47 engages. A step 55 is also provided in the upper pump portion 47, against which an end face of the neck section comes to rest. The upper pump portion 47 and the lower pump portion 52 are also connected to one another by pressing together.
The lower pump portion 52 also receives a mounting base 53, in which the pipe portion 35 is guided. The lift pipe 13 is clampingly held in the pipe portion 35.
20The construction of the pump cylinder 6 and the portion of the pump piston 5 cooperating with the pump cylinder is as described above.
The vertical section 7 of the pump piston 5 has an insert portion 56, which generally extends only in the vertical section of the pump piston 5, up to the knee 9 of the piston. A sealing lip 57 is provided at the upper end of the insert portion 56, the lip abutting against the radial periphery of a valve plug 58, and the valve plug projecting outwardly from the housing cover 49 into the pump piston 5. The valve plug 58 in cooperation with the sealing lip 57 forms in this case the outlet valve 12 from the pump chamber 10. At the other end of the insert portion 56, there is formed on the insert portion the sealing lip 28 already described further above.
The bearing pin 3 of the hand lever 2 is received on the one hand in a U-shaped recess 59 of the lower housing portion 52 and on the _ other hand is retained in this by means of a flange 58, which likewise has at its end a U-shaped concavely rounded formation 59'. From the point of view of assembly, the hand lever 2 with its pin 3 may therefore be easily inserted into the lower housing portion 52 and is then held in its mounting by pressing on of the upper housing portion.
A substantially conical surface designated by reference 60 is in addition provided in the mounting base 53, this surface cooperating with a sealing bead 61 in the pipe section 35. In the non-actuated condition, as it is shown in Figure 5, the spring 27 of the hand lever 2 acts on the ring 15 by means of the short lever arm 18 and thereby effects positive sealing of the storage container. In the actuated condition, as it is shown in Figure 6, as already indicated above, venting paths are provided to the storage container, so that the quantities discharged may be replaced by air flowing back in, without reduced pressure developing in the storage container.
As an alternative to the embodiment shown, or optionally in addition to it, it may be further provided for the pipe portion 35 to be formed in a conically tapering manner throughout the region of the portion which cooperates with the mounting base 53. This then has the resu1t that in the non-actuated condition according to Figure 5, there results a positioning and centering in the thickened region of the cone, while in the actuated condition according to Figure 6, a distinct gap is defined from the oppositely-located collar or from the sealing collar 14 of the mounting base 53. It is also further favoured for the mounting base 53 to be integrally formed with the lower pump portion 52.
The final exemplary embodiment shown in Figures 7 to 11 embodies a spray pump which in principle and also in part in structure has the same construction as described. The reference numerals are used in the corresponding sense, in part without repetition in the text. Thus the hand lever 2 is provided in a constructionally different shape in respect of its profile, no longer as a right-angle;
it has rather a substantially V-shaped configuration. The two V-limbs diverge from one another towards their free ends. The connecting region 63 of the two arm portions a, b takes up in the unloaded condition of the hand lever 2 which is subject to the action of a spring, a disposition which is closest to the horizontally extending section 8 of the knee 9. The nearness of the connecting region 63 to the outlet nozzle 51 is also noteworthy. The one limb a of the hand lever 2 functioning as a withdrawal tap is located therefore at the beginning of its actuation closer to the starting position of the spray jet; this increases the accuracy of aim during use. As may be seen from Figure 7, the connecting region 63 of the V-limbs a, b extends far above the bearing pin 3. The bearing pin 3 is located substantially in the central region, i.e. at one-half the length of the limb b forming the shorter lever arm 18 of the hand lever 2, and also in the transition region of an obtuse-angled bend extending steeply with respect to the vertical axis of the pump 1.
The spring 27 which permanently loads the hand lever 2 in the direction of its starting position now no longer extends into the angle space of the hand lever 2; it is rather formed peripherally and its working portion is provided externally of the hand lever. It is rooted in the said connecting region 63 and extends in a diverging manner from the bearing-mounted limb b of the hand lever 2. There is in question the provision of a pair of similarly formed leaf spring type members, which cross the vertically extending region of the pump chamber 10 to the exterior of the chamber, in a slopingly extending manner. The springs 27 then find their opposite support 64 on the upper pump portion 47 of the spray pump. Supportingly active are the lower end faces of a vertical flange, which end faces are oriented to correspond to the inclination of the leaf spring type members (springs 27). When the hand lever 2 is actuated, the upper sides of the springs 27 slide over the said end faces substantially in the spray direction. There results a very uniform spring characteristic.
The more detailed configuration of this hand lever is apparent _ from Figure 9. In this drawing, the springs 27 also take up the slightly curved condition which they have on insertion; in the sense of a positive pre-stress, they have however in the undeformed condition, a substantially straight orientation. From the figure in question, the duplication of the short lever arm 18 of the hand lever 2 will also be further apparent. The limb b in question has a fork-shaped structure open towards the free end. The fork space is bridged on a shortest path in a transversely directed manner by the bearing pin also formed with it. The fork space may, as shown in Figure 9, end well before the connecting region 63, or alternatively, as shown in Figure 8, it may continue into this region 63. In the latter case, the material saving factor is optimised.
A further constructional difference in the final embodiment exists in regard to the manner of sealing at the pipe section 35.
This is here based on a pure conical seal. The sealing bead 61 shown in Figure 5 is therefore not necessary. The sealing ring 36 used in the previous embodiment may also be obviated, so that in this regard, the number of components may be further reduced. The pipe portion 35 standing in overlapping relationship with the similarly formed mounting base 53 is clearly reduced compared with the clear measure of the pillar-shaped penetration in the mounting base 53, so that also in this case, by lifting the cone 65 from its corresponding valve seat surface 66, the desired vent path to the container interior is made available, but on release of the hand lever 2, this path is again immediately closed off.
Underneath the mounting base 53, there is added a downwardly extending annular wall 67. The outer side of this tapers towards its free end, so that this annular wall 67 enters into the mouth of the container holding the medium to be delivered as a sealingly acting annular cone. The seal at this sealing location is effected by the screwcap used in all of the embodiments, which draws the pump 1 against the periphery of the mouth of the vessel or storage container. It engages over a peripheral annular collar 68 of the pump housing. The screwcap is snapped onto this annular collar 68.
21 6779~
A final structural difference from the preceding embodimentsconsists also in a special cross-sectional configuration of the horizontally extending section 8 of the knee 9. In place of the otherwise circularly-rounded cross-section of this channel-form section 8, it is now provided that the flow path or outlet leading to the outlet valve 12, seen in cross-section, is formed in the shape of an oblong hole or slot. By this, there is provided practically the same flow cross-section as at the opened outlet valve 12. Reference to Figure 11 makes clear that this oblong hole-shaped cross-section extends in the form of an arc. The oblong hole-shaped cross-section extends curved in semi-circular form about the outlet nozzle 51 or the centre line of this, which is located at the centre of curvature of this semi-circle. The arc-shaped passage thus created, the two ends of which are directed downwardly, is located to the upper side of this centre of curvature.
The outlet nozzle 51 is finally associated with a further nozzle pipe R which may be brought into use selectively. There is in question a cup-shaped formation on a visor flap 69. This is connected by way of a film hinge 70 to a rotary closure 71 which may be mounted in the nozzle region. When the visor flap 69 hangs down, a denser spray jet exits from the outlet nozzle 51; by contrast in the upwardly secured position of use of the nozzle pipe R, a more foamed or diffuse spray exits from the nozzle (see Figure 7, chain dotted representation). The nozzle pipe R is described in unpublished Patent Ap~lication No. P 43 24 607.9. The disclosure content of the above-mentioned patent application is incorporated as to its full content in the disclosure of the present application, this both in respect of the particular sieve construction as well as in respect of the variations in the conically tapering outlet cross-section and the rotary closure.
The pump shown in Figure 12 corresponds to the pump shown in Figure 3 apart from the screwcap and the return spring.
As shown, the hand lever 2 is formed without an integral return spring. Neither is any return spring located above a cover base 72. The return spring is rather formed as a spring bellows 73, which extends to a storage vessel, not shown, and, at its upper end, abuts against the cover base 72 or an insert portion 78, which is subsequently to be described in more detail.
The bellows spring 73 is in particular a plastics bellows spring made by the injection moulding process, for example from polypropylene or polyethylene.
The suction pipe mounting 74 formed integrally with the pump cylinder 6 has at its lower end, a retaining seating 75, against which a lower inwardly directed end fold 76 of the bellows spring 73 abuts, on an upper retaining step. Fluting 77 or the like is also formed at the lower end of the suction pipe mounting 74, onto which fluting the suction pipe 13 is retainingly pushed. As an alternative to this, an internal mounting is also possible, as shown for example in connection with Figure 3.
In the embodiment, the cover base 72 is part of a screwcap, the screwthread being formed in an insert portion 78. The insert portion 78 forms not only the internal thread for screw mounting on a storage vessel, but also an upper sealing surface abutting against the cover base 72 and in addition, it forms a guide 79 for the suction pipe mounting, which guide is integral with the previously mentioned components. By comparison of Figures 12 and 13, it may be seen that the suction pipe mounting in the actuated condition is pushed up sufficiently high for the lower end fold 76 of the spring bellows 73 to come approximately into contact with an end face of the suction pipe mounting or suction pipe guide 79. There is in question in the case of the suction pipe mounting 79, a totally tubular guide portion.
Air passage openings are also provided for venting the storage space vessel. In the embodiment, these are grooves, not shown in detail, in an outer surface of the suction pipe mounting 74 and in an -inner surface of the suction pipe guide 79, one or more through openings being also likewise defined between an end surface of the end fold 76 of the spring bellows 73 and the suction pipe mounting 74, so that all air may flow in from above the cover base 72 into the storage vessel, in particular on actuation of the pump in accordance with Figure 13.
Deviating from the embodiment shown, the seal, which when assembled cooperates with an end wall of a bellows of the storage vessel, may also be formed moulded onto the bellows, at upper end fold 80, the seal being provided in the embodiment integrally in the insert portion 78.
In particular then, when the venting paths are provided only on actuation of the pump, but a seal is otherwise created, the spring bellows is also advantageously applied to this sealing, which it also effects by its resilient characteristics.
The features of the invention disclosed in the preceding description, in the drawings and in the claims, may be of importance for the realisation of the invention both individually and also in any desired combination. All features disclosed are relevant to the invention. In the disclosure of the application, there are hereby also incorporated as to their full content, the disclosure contents of the associated/accompanying priority documents (text of the previous application).
Claims (38)
1. Hand lever actuated pump (1) for delivery of fluid or paste-form media, comprising a pump chamber (10) which has an inlet valve (11) and an outlet valve (12), further comprising a pump piston (5) which cooperates with a pump cylinder (6), and comprising a cover base (72) for a withdrawal opening of a storage vessel, the cover base (72) being penetrated by a suction pipe (13), and comprising a return spring, characterised in that the return spring abuts against the cover base (72) on the storage space side.
2. Hand lever actuated pump according to Claim 1, characterised in that the return spring is a spring bellows (73).
3. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the spring bellows (73) is produced by the plastics injection moulding process.
4. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the return spring also abuts against a suction pipe mounting (74).
5. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the suction pipe mounting is formed integrally with the pump cylinder (6) or with the pump piston (5).
6. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the cover base (72) is part of a screwcap or a retaining cap.
7. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the screwcap or retaining cap consists of a mounting receptor and an insert portion (78) disposed on the storage space side, which insert portion (78) provides retaining or thread means.
8. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the insert portion (78) forms a tubular guide portion (79) for the suction pipe (13) or for the suction pipe mounting (74).
9. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the spring bellows (73) has a through opening for venting the storage space.
10. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the through opening is provided only when the pump is actuated.
11. Hand lever actuated pump according to one or more of the preceding claims, characterised in that an air release opening is formed between the guide portion and the suction pipe mounting.
12. Hand lever actuated pump (1) for discharge of fluid or paste-form media, comprising a pump chamber (10), which has an inlet valve (11) and an outlet valve (12), further comprising a pump piston (5) which cooperates with the pump cylinder (6), the pump piston (5) being formed fixedly or substantially fixedly, preferably according to one of the preceding claims, characterised in that the pump piston (5) is formed to have a bent path or extent and the pump cylinder (6) is arranged to be displaceable in a substantially vertical direction in a neck region of the pump (1).
13. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the outlet valve (12) of the pump chamber (10) forms directly a media exit opening from the pump (1).
14. Hand lever actuated pump according to one or more of the preceding claims, characterised in that a suction pipe (13) opens into the pump chamber (10) in substantially straight-line prolongation with penetration of a pump cylinder base (17).
15. Hand lever actuated pump according to one or more of the preceding claims, characterised in that a radially projecting collar (15) is formed on the suction pipe (13) or on a section in prolongation of the pipe (13), the collar (15) being located before the base (17) of the pump cylinder (6), to create an engagement space between the base (17) of the pump cylinder (6) and the collar (15) for a short lever arm (28) of the pump hand lever (2) for carrying out a pumping movement.
16. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the outlet valve (12) has a closure plug (39), which has a sealing lip (43) around its periphery, the sealing lip abutting against a radial peripheral surface of the closure plug (39) with a positive pre-stress.
17. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the closure plug (39) and radial ribs (40) are mounted in a carrier portion (41).
18. Hand lever actuated pump according to one or more of the preceding claims, the pump having a pump housing, characterised in that the pump housing (46) has a horizontal division, the pump piston (5) being secured in the one part of the pump housing and the pump cylinder (6) being secured in the other part of the pump housing.
19. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the division is formed in the neck region of the pump (1).
20. Hand lever actuated pump according to one or more of the preceding claims, characterised in that a part-section of the pump cylinder is integrally formed in an upper pump portion.
21. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the outlet valve (12) is disposed in a substantially linear vertical prolongation of the inlet valve (11).
22. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the pump piston (5) continues on the far side of the outlet valve (12).
23. Hand lever actuated pump according to one or more of the preceding claims, characterised in that a part-section of the pump piston (5) before the outlet valve (12) has a larger cross-sectional area than a part-section located after the outlet valve (12).
24. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the outlet valve (12) consists of a valve plug (58) formed or moulded on the pump housing, which plug cooperates with a sealing lip (57) abutting against its periphery.
25. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the sealing lip (57) is formed on a vertical part-section of the pump piston (5).
26. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the sealing lip (57) is formed on an insert portion (56) which is disposed in a part-section of the pump piston (5) fixed to the housing.
27. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the insert portion (56) has a cup-shaped enlargement at its other end section, the cup edges being formed as sealing lips (28) for cooperation with an internal surface of the pump cylinder (6).
28. Hand lever actuated pump according to one or more of the preceding claims, characterised in that a bearing pin (3) of the hand lever is rotatably inserted in a recess of the pump housing (46), which recess is formed in part by the upper pump portion (47) and in part by the lower pump portion (52).
29. Hand lever actuated pump according to one or more of the preceding claims, characterised in that a seal is formed between the connecting section (35) and a mounting base (53).
30. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the seal is effective in the non-actuated condition by action of a spring (27) of the hand lever (2).
31. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the seal is ineffective in the actuated condition and enables venting of a storage vessel or container.
32. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the hand lever (2) has a substantially V-shaped configuration and a connecting region (63) for the V-limbs (a, b) is located above the bearing pin (3) in an unloaded condition.
33. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the spring (27) extends from the connecting region (63).
34. Hand lever actuated pump according to one or more of the preceding claims, characterised in that an opposite support (64) for the spring (27) is provided on the upper pump portion (47).
35. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the outlet leading to the outlet valve (12) is formed to have the shape of an oblong hole in cross-section.
36. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the oblong hole-shaped cross-section of the substantially semi-circularly curved outlet extends about the centre line of the outlet nozzle (51) which is located at the centre of curvature.
37. Hand lever actuated pump according to one or more of the preceding claims, characterised in that a mounting structure (lower pump portion 52) is formed on the mounting base (53), which structure may be brought into cooperation with a similarly directed mounting structure (projecting sleeve 54) of the upper pump portion (47), for assembly, in particular press assembly.
38. Hand lever actuated pump according to one or more of the preceding claims, characterised in that the works of the pump (1) in the assembled condition are held within the mounting structures (lower pump portion 52, upper pump portion 47).
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4324608 | 1993-07-22 | ||
| DEP4324608.7 | 1993-07-22 | ||
| DEP4333550.0 | 1993-10-01 | ||
| DE4333550 | 1993-10-01 | ||
| DE4411031A DE4411031A1 (en) | 1993-07-22 | 1994-03-30 | Hand operated pump |
| DEP4411031.6 | 1994-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2167799A1 true CA2167799A1 (en) | 1995-02-02 |
Family
ID=27205366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002167799A Abandoned CA2167799A1 (en) | 1993-07-22 | 1994-07-08 | Lever-operated pump |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP0710156B1 (en) |
| JP (1) | JPH09501347A (en) |
| KR (1) | KR960703680A (en) |
| CN (1) | CN1129410A (en) |
| AT (1) | ATE181519T1 (en) |
| AU (1) | AU7458294A (en) |
| BR (1) | BR9407134A (en) |
| CA (1) | CA2167799A1 (en) |
| CZ (1) | CZ19696A3 (en) |
| DE (2) | DE4411031A1 (en) |
| ES (1) | ES2133569T3 (en) |
| PL (1) | PL318466A1 (en) |
| WO (1) | WO1995003132A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11548022B2 (en) | 2018-03-15 | 2023-01-10 | Aptar Dortmund Gmbh | Dispensing device and dispenser |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29508519U1 (en) * | 1995-05-23 | 1996-09-19 | Frimec Fritz Meckenstock GmbH & Co, 42119 Wuppertal | Hand operated pump |
| DE19638602A1 (en) * | 1995-10-31 | 1997-05-15 | Fritz Meckenstock | Discharge valve for hand-operated pump |
| DE19605153A1 (en) * | 1996-02-13 | 1997-08-14 | Pfeiffer Erich Gmbh & Co Kg | Discharge device for media and method for producing a discharge device or the like. |
| EP0968767A1 (en) * | 1998-06-30 | 2000-01-05 | Guala Dispensing S.P.A. | Spray pump for liquids |
| DE10032976A1 (en) | 2000-07-06 | 2002-01-17 | Pfeiffer Erich Gmbh & Co Kg | Discharge device for media |
| US6745760B2 (en) | 2001-05-15 | 2004-06-08 | Trudell Medical International | Medicament applicator |
| KR100822134B1 (en) * | 2002-05-02 | 2008-04-15 | 애경산업(주) | Protecting tool of sprayer needle |
| CN100453187C (en) * | 2006-05-09 | 2009-01-21 | 黄建壮 | Hand beating miniature sprayer |
| PL2916962T3 (en) * | 2012-11-06 | 2022-04-25 | Dispensing Technologies B.V. | Systems and methods to precisely control output pressure in buffered sprayers |
| DE202016102720U1 (en) * | 2016-05-22 | 2017-08-23 | Emsa Gmbh | Pumping pot attachment for a beverage can |
| DE102021122705A1 (en) | 2021-05-20 | 2022-11-24 | Aptar Dortmund Gmbh | Plastic spring and dispenser |
| EP4341003A1 (en) | 2021-05-20 | 2024-03-27 | Aptar Dortmund GmbH | Spring made of plastic, and dispensing device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1287318A (en) * | 1959-06-13 | 1962-03-16 | Sprayer for various liquids | |
| US3840157A (en) * | 1972-10-16 | 1974-10-08 | J Hellenkamp | Hand operated sprayer |
| AU581041B2 (en) * | 1985-12-03 | 1989-02-09 | Atsushi Tada | A manually operated trigger type dispenser |
| JPH0685897B2 (en) * | 1987-08-11 | 1994-11-02 | 篤 多田 | Manual trigger-type dispenser and method for producing the same |
| IT220413Z2 (en) * | 1990-11-06 | 1993-09-21 | Coster Tecnologie Speciali Spa | PUMP DEVICE FOR DOSING OR DISPENSING HAND-OPERATED FLUIDS. |
-
1994
- 1994-03-30 DE DE4411031A patent/DE4411031A1/en not_active Withdrawn
- 1994-07-08 CZ CZ96196A patent/CZ19696A3/en unknown
- 1994-07-08 AT AT94924246T patent/ATE181519T1/en not_active IP Right Cessation
- 1994-07-08 ES ES94924246T patent/ES2133569T3/en not_active Expired - Lifetime
- 1994-07-08 JP JP7504899A patent/JPH09501347A/en active Pending
- 1994-07-08 PL PL94318466A patent/PL318466A1/en unknown
- 1994-07-08 BR BR9407134A patent/BR9407134A/en not_active Application Discontinuation
- 1994-07-08 CA CA002167799A patent/CA2167799A1/en not_active Abandoned
- 1994-07-08 DE DE59408437T patent/DE59408437D1/en not_active Expired - Fee Related
- 1994-07-08 AU AU74582/94A patent/AU7458294A/en not_active Abandoned
- 1994-07-08 EP EP94924246A patent/EP0710156B1/en not_active Expired - Lifetime
- 1994-07-08 WO PCT/EP1994/002246 patent/WO1995003132A1/en not_active Application Discontinuation
- 1994-07-08 KR KR1019960700275A patent/KR960703680A/en not_active Application Discontinuation
- 1994-07-08 CN CN94193088A patent/CN1129410A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11548022B2 (en) | 2018-03-15 | 2023-01-10 | Aptar Dortmund Gmbh | Dispensing device and dispenser |
Also Published As
| Publication number | Publication date |
|---|---|
| AU7458294A (en) | 1995-02-20 |
| ES2133569T3 (en) | 1999-09-16 |
| JPH09501347A (en) | 1997-02-10 |
| PL318466A1 (en) | 1997-06-23 |
| KR960703680A (en) | 1996-08-31 |
| CZ19696A3 (en) | 1996-08-14 |
| DE4411031A1 (en) | 1995-01-26 |
| CN1129410A (en) | 1996-08-21 |
| EP0710156B1 (en) | 1999-06-23 |
| ATE181519T1 (en) | 1999-07-15 |
| DE59408437D1 (en) | 1999-07-29 |
| EP0710156A1 (en) | 1996-05-08 |
| WO1995003132A1 (en) | 1995-02-02 |
| BR9407134A (en) | 1996-09-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 20000710 |
|
| FZDE | Discontinued |
Effective date: 20000710 |