EP0289855A2 - Fluid dispenser - Google Patents

Fluid dispenser Download PDF

Info

Publication number
EP0289855A2
EP0289855A2 EP88106258A EP88106258A EP0289855A2 EP 0289855 A2 EP0289855 A2 EP 0289855A2 EP 88106258 A EP88106258 A EP 88106258A EP 88106258 A EP88106258 A EP 88106258A EP 0289855 A2 EP0289855 A2 EP 0289855A2
Authority
EP
European Patent Office
Prior art keywords
piston
pump
suction
chamber
valve
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.)
Granted
Application number
EP88106258A
Other languages
German (de)
French (fr)
Other versions
EP0289855B1 (en
EP0289855A3 (en
Inventor
Lothar Graf
Karl-Heinz Fuchs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar Radolfzell GmbH
Original Assignee
Erich Pfeiffer GmbH
Ing Erich Pfeiffer GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Erich Pfeiffer GmbH, Ing Erich Pfeiffer GmbH filed Critical Erich Pfeiffer GmbH
Priority to AT88106258T priority Critical patent/ATE77594T1/en
Publication of EP0289855A2 publication Critical patent/EP0289855A2/en
Publication of EP0289855A3 publication Critical patent/EP0289855A3/en
Application granted granted Critical
Publication of EP0289855B1 publication Critical patent/EP0289855B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B05B11/0005—Components or details
    • B05B11/0097—Means for filling or refilling the sprayer
    • 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
    • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
    • B05B11/1018—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element and the controlling element cooperating with means for opening or closing the inlet valve
    • 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
    • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
    • B05B11/1019—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element the inlet valve moving concurrently with the controlling element during whole pressure and aspiration strokes, e.g. a cage for an inlet valve ball being part of the controlling element

Definitions

  • the invention relates to a discharge device according to the preamble of claim 1.
  • the pump chamber can be surrounded by the pre-suction chamber in the form of a separate cup-shaped chamber body inserted into the cylinder housing. This training has proven itself very well.
  • the invention has for its object to provide a carrying device of the type mentioned, which enables an even more compact and simple design.
  • the pre-suction chamber is expediently at least partially surrounded by the pump chamber lying within the pump chamber.
  • the pump piston and the pre-suction piston mesh at least over part of their axial extent, so that the piston unit can be made very short.
  • an outer peripheral surface can be assigned to the preliminary piston as a piston raceway instead of an inner peripheral surface, so that the preliminary piston is constricted radially inward with increasing pressure in the pump chamber and thus seals particularly well.
  • the two pistons expediently have piston sleeves lying one inside the other with only a small gap distance of the order of one to three tenths of a millimeter, so that the pump chamber can be almost completely emptied during each pump stroke and therefore a very precise metering of the amount of medium applied is ensured.
  • the two pistons lying one inside the other can be mounted displaceably in the direction of the pump stroke in order to actuate an exhaust valve, and the pre-suction piston can be composed of two parts which can be displaced in the direction of the pump stroke in order to actuate an inlet valve.
  • the inlet valve located directly in the area of the pre-suction piston possibly operating in the manner of a slide control, serves as a transfer valve between the pre-suction chamber and the pump chamber, so that no separate inlet valve is required between the pre-suction chamber and the accumulator, but only an always open line connection.
  • a mechanically opened pressure relief connection is provided to vent the pump chamber in the stroke end position of the piston unit. If this pressure relief connection is formed by the stop-actuated opening of the outlet valve, then there is no need for a separate ventilation channel and the outlet valve can also be designed such that it opens when the pump chamber is filled with media under the pressures occurring during the pump stroke before the stroke end position is reached, so that the outlet valve is opened mechanically below a predetermined pressure and above a certain pressure by pressure difference.
  • the discharge device according to the invention can be designed in a simple manner so that it works equally well practically regardless of position and even in the overhead position when the piston unit is in the initial position, the storage device is prevented from leaking by the discharge device.
  • a discharge device 1 has a cylinder housing 3 which is substantially cylindrical over most of its length and which is to be fastened in a sealed manner to the neck of a vessel 5 provided as a store using a cap 4, for example a screw cap that it only engages in the neck of the vessel with a small gap distance and lies within this neck of the vessel over most of its length.
  • the cylinder housing 3 is provided at its outer or rear end with a ring flange 6 formed in one piece with it and projecting radially beyond its outer circumference, with which it is clamped against the end face of the vessel neck with the interposition of a seal.
  • This outer end of the cylinder housing 3 is essentially closed with a cylinder cover 7, which has a sleeve extension engaging in the cylinder housing and an annular flange part lying in the ring flange 6, which is blown into the inner groove of the ring flange 6 from the outer end face and is thereby secured.
  • the outer end faces of the ring flange 6 and the cylinder cover 7 rest against an annular transverse wall 8 of the cap 4, with which the cylinder cover 7 can thus also be pressed into its sealing fastening position against the ring flange 6.
  • a piston unit 9 is slidably mounted, the two coaxially lying, essentially cup-shaped and facing the inner end of the cylinder housing 3 with its cup openings ben, namely an outer pump piston 10 and a pre-suction piston 11 located therein.
  • the inner end of the cylinder housing 3 forms a cylinder 12 with a piston raceway 13 for two annular sealing lips of the pump piston 10 lying one behind the other, which are provided in the region of both ends of this pump piston 10 and are expanded in the opposite shape of a truncated cone to sealing edges.
  • a pre-suction cylinder 15 projecting freely against the piston unit 9, which is formed in one piece with the cylinder housing 3 and protrudes from an annular bottom wall 18 which forms the inner end of the cylinder 12. From the outer end face of this bottom wall 18 there is a connecting piece, which delimits an inlet channel 19, for a riser pipe, for example, reaching as far as the bottom of the vessel 5.
  • the outer circumferential surface of the pre-suction cylinder 15 forms the piston track 16 for the pre-suction piston 11, which engages over the pre-suction cylinder 15 in each piston position in the manner of a slip and is guided on the piston track 16 with an annular sealing lip provided at its front end.
  • a substantially cylindrical piston shaft 21 is provided which is directly connected to the pump piston 10 or is formed in one piece, which passes through the cylinder cover 7 and the transverse wall 8 with a gap distance and an actuating head 22 is placed on its outer, reduced-diameter end is.
  • the tubular piston shaft 21 delimits one with the pump chamber 14 with the interposition of an outlet valve 23 connected outlet channel 24, which leads to an outlet opening 25 in the actuating head 22.
  • the actuating head 22 engages in a position in a collar of the cap 4 projecting from the transverse wall 8.
  • the end of the pre-suction piston 11 opposite the pre-suction chamber 14 is closed with an end wall which forms a frusto-conical valve closing part 26 of the outlet valve 23, the valve seat 27 of which lies in the associated end wall of the pump piston 10 connected to the piston shaft 21 at the inner end of the outlet channel 24 .
  • the pre-suction piston 11 or the valve closing part 26 is guided with an axially slotted shaft 28 in an axially displaceable section of the piston shaft 21 or the outlet channel 24 in such a way that the outlet valve 23 can be opened by shifting against the force of the return spring 20.
  • This section forms a neck 29 of the piston shaft 21, which is thin-walled and elastically compressible with a bulging bulge compared to the remaining sections of the piston shaft lying between the pump piston 10 and the actuating head 22.
  • the valve closing part 26 forms radially outside the valve seat 27 a piston end face which is exposed to the pressure in the pump chamber 14 via the annular gap between the two working pistons and which is larger in area than the front, annular end face 30 of the pre-suction piston 11.
  • a transfer valve 32 is provided, which is opened and closed mechanically depending on the direction of movement of the piston unit 9 or the pre-suction piston 11 and is structurally combined with the pre-suction piston 11 in such a way that both its valve closing part 33 and its valve seat 34 is provided on the pre-suction piston 11.
  • the pre-suction piston 11 has a piston sleeve 35 which is formed by a separate component and is axially limited by a snap connection between an open and a closed position and is movably connected to the piston end wall or the valve closing part 26 of the exhaust valve 23.
  • This piston sleeve 35 which extends almost over the entire length of the corresponding piston sleeve 36 of the pumping piston 10, forms with its rear end face the valve-closing part 33, which is tapered in cross section toward the rear of the pump axis and which, as the valve seat 34, has an annular groove in the front that is complementary in cross section Face of the piston end wall is assigned.
  • the piston sleeve 35 On the inner circumference of the piston sleeve 35 are several, radially resilient and distributed in one piece by the piston, evenly distributed over the handling benstirnwand protruding snap members 38 with radially outwardly projecting snap cams which are associated with an inner ring shoulder provided as a link of the piston sleeve 35 and are at a distance from the valve seat 34 that the piston sleeve 35 from the tightly engaging valve seat 34 in the closed position axially forward to the stop can be moved to the cam in an open position in which the transfer valve 32 in the region of the rear end of the pre-suction piston 11 releases a valve passage 39 between the pre-suction chamber 17 and the annular gap delimited by the piston sleeves 35, 36.
  • valve closing part 33 is pressed against the valve seat 34 due to the friction between the pre-suction piston 11 and the piston race 16, so that the pressure in the pump chamber 14 does not pass through the transfer valve 32 into the pre-suction chamber 17 can escape.
  • the valve closing part is again pulled out of the valve seat 34 as a result of the aforementioned friction, so that medium is sucked through the opened transfer valve 32 from the pre-suction chamber 17 into the pump chamber 14 as a result of the negative pressure building up in the pump chamber 14.
  • the piston shaft 21 forms a driver 40 which is formed in one piece with it and is located opposite the rear end of the shaft 28 and which, when the outlet valve 23 is closed, lies at a short distance from the counter surface of the valve closing part 26 or the shaft 28 formed by the rear end surface. If the pump piston 10 is in its stroke end position lying against the bottom wall 18, the neck 29 no longer lies within the cylinder cover 7, but rather freely within the cylinder housing over most of its length. If the actuating head 22 is now pressed further, the neck 29 is pressed through Compression widened or shortened, so that the driver 40 runs onto the shaft 28 and takes it along until the end face 30 of the pre-suction piston 11 is also fixed by limit stop on the bottom wall 18 when the transfer valve 32 is closed. In this case, the outlet valve 23 is then opened with a relatively small opening cross section, so that, if necessary, the pump chamber 14 can be effectively vented.
  • the cylinder cover 7 has longitudinal ribs 41 distributed evenly over the circumference, which at the rear ends merge into radial ribs on the outer end face of the annular flange part of the cylinder cover 7, the rib edges of which abut the transverse wall 8.
  • the front ends of the longitudinal ribs 41 are set back relative to the associated end of the sleeve extension of the cylinder cover 7, so that this end, which has a reduced diameter, can form a valve seat of a ventilation valve closed when the piston unit 9 is in its initial position, the valve closing part of which is connected to the piston end wall of the pump piston 10 by a valve , frustoconical portion of the piston skirt 21 is formed.
  • the vessel 5 is aerated via the ventilation valve, for which purpose 3 ventilation openings are provided behind the pump piston 10 in the wall of the cylinder housing, which are essentially covered by the sleeve extension of the cylinder cover 7.
  • the neck 29 Even if it does not have sufficient elasticity for stretching, is inevitably returned to its extended position or to its non-compressed position during the return stroke.
  • FIG. 4 the same reference numerals are used for corresponding parts as in the other figures, but with the index "a”.
  • the cylinder housing 3a is graduated in diameter such that an outer, Over the front wall of the cap 4a freely projecting housing part further and an inner, the cylinder 12a forming part is slimmer, the piston 10a is guided in the further part with its rear sealing lip, which is correspondingly larger in diameter than the front sealing lip guided in the cylinder 12a .
  • the cylinder housing 3a is formed in one piece with the cap 4a, with a sleeve part 42 formed in one piece with the cap 4a protruding from the inside of its end wall, which is tapered at the outer circumference to its end in an approximately conical angle such that instead of a separate seal under sealing pressure engages in the inner circumference of the neck of the vessel.
  • the sleeve part 42 surrounds the cylinder 12a at a distance, such that an annular groove open to the vessel is formed, the bottom surface of which is essentially delimited by an annular shoulder between the further and narrower part of the cylinder housing 3a. In this annular shoulder there are through openings 43 which connect the space behind the front piston lip of the pump piston 10a with the vessel.
  • longitudinal channels 44 are provided which connect to the through openings 43 and end in the initial position of the pump piston 10a in front of its rear piston lip.
  • Each longitudinal channel is formed by at least one longitudinal rib protruding over the inner circumference of the cylinder housing 3a and rising obliquely in the direction of the pump stroke at a flat angle, onto which the rear piston lip runs during the pump stroke and is dented radially inward so that the longitudinal rib passes through on both sides the elastic deformation of this piston lip openings are released.
  • the rear end of the cylinder housing 3a is not closed by a separate cylinder cover, but rather is delimited radially inward from the jacket of the cylinder housing 3a, for example by ultrasound angled jacket straps 7a, which serve as a stop for the pump piston 10a in the starting position.
  • the cylinder housing 3a has an annular collar projecting over its outer circumference at the outer end, over which the cap-shaped actuating head 22a with a corresponding annular collar provided on its inner circumference is fitted by resilient snapping on.
  • the transfer valve 32a is designed as a slide valve lying in the region of the front end of the pre-suction piston 11a, the valve closing part 33a of which is formed by the front piston lip of the pre-suction piston 11a.
  • transition openings 39a in the form of, for example, longitudinal slots, which in the initial position of the piston unit 9a are released by the valve closing part 33a in such a way that they establish a connection between the pre-suction chamber 17a and the pump chamber 14a.
  • the pumping piston 11a has a plunger 45 protruding freely forward and practically forming an extension of the shaft 28a, which strikes the bottom wall of the suction chamber 17a when the suction piston 11a is in the front end position, so that only very small stop forces act on the piston sleeve of the suction piston 11a Act.

Abstract

In a dispenser a manually operable thrust piston pump (2) has a presuction piston (11) located with a limited spacing within a pump piston (10) and which in the manner of a telescopic tube engages over a cylindrical, freely projecting chamber body (15) and consequently bounds a presuction chamber (17) constantly connected by a line to a container and whose length and volume are significantly greater than that of a pump chamber (20) surrounding presuction chamber (17). The two working pistons slideably guided on one another form valve closures of an outlet valve (23) controlled by pressure difference and which at the end of the pump travel and in addition to said control, can be mechanically opened by a dog (40) positionally variable by means of a compressible neck (29) for venting the pump chamber (14).

Description

Die Erfindung betrifft eine Austragvorrichtung nach dem Oberbegriff des Patentanspruches 1.The invention relates to a discharge device according to the preamble of claim 1.

Bei einer Austragvorrichtung dieser Art kann die Pumpenkam­mer in Form eines gesonderten, in das Zylindergehäuse einge­setzten, napfförmigen Kammerkörpers von der Vorsaugkammer umgeben sein. Diese Ausbildung hat sich sehr gut bewährt.In the case of a discharge device of this type, the pump chamber can be surrounded by the pre-suction chamber in the form of a separate cup-shaped chamber body inserted into the cylinder housing. This training has proven itself very well.

Der Erfindung liegt die Aufgabe zugrunde, eine Aüstragvor­richtung der genannten Art zu schaffen, welche eine noch kompaktere und einfachere Ausbildung ermöglicht.The invention has for its object to provide a carrying device of the type mentioned, which enables an even more compact and simple design.

Diese Aufgabe wird bei einer Austragvorrichtung der genann­ten Art gemäß der Erfindung durch den kennzeichnenden Teil des Patentanspruches 1 gelöst. Zweckmäßig ist die Vorsaug­kammer wenigstens teilweise innerhalb der Pumpenkammer lie­gend von der Pumpenkammer umgeben. Vorzugsweise ist dabei statt einer axial hintereinanderliegenden Anordnung der bei­den Kolben vorgesehen, daß der Pumpkolben und der Vorsaug­kolben zumindest auf einem Teil ihrer Axialerstreckung in­einandergreifen, so daß die Kolbeneinheit sehr kurz ausge­bildet werden kann.This object is achieved in a discharge device of the type mentioned according to the invention by the characterizing part of patent claim 1. The pre-suction chamber is expediently at least partially surrounded by the pump chamber lying within the pump chamber. Instead of an axially one-behind arrangement of the two pistons, it is preferably provided that the pump piston and the pre-suction piston mesh at least over part of their axial extent, so that the piston unit can be made very short.

Durch die erfindungsgemäße Ausbildung kann dem Vorsaugkolben als Kolbenlaufbahn statt einer Innenumfangsfläche eine Au­ßenumfangsfläche zugeordnet sein, so daß der Vorsaugkolben mit zunehmendem Druck in der Pumpenkammer radial nach innen verengend belastet wird und so besonders gut abdichtet.Due to the design according to the invention, an outer peripheral surface can be assigned to the preliminary piston as a piston raceway instead of an inner peripheral surface, so that the preliminary piston is constricted radially inward with increasing pressure in the pump chamber and thus seals particularly well.

Die beiden Kolben weisen zweckmäßig mit nur geringem Spalt­abstand in der Größenordnung von ein bis drei Zehntel Milli­meter ineinander liegende Kolbenhülsen auf, so daß die Pum­penkammer bei jedem Pumphub nahezu vollständig entleert wer­den kann und daher eine sehr genaue Dosierung der ausge­brachten Menge an Mediem gewährleistet ist.The two pistons expediently have piston sleeves lying one inside the other with only a small gap distance of the order of one to three tenths of a millimeter, so that the pump chamber can be almost completely emptied during each pump stroke and therefore a very precise metering of the amount of medium applied is ensured.

Die beiden ineinanderliegenden Kolben können zur Betätigung eines Auslaßventiles in Richtung des Pumphubes verschiebbar aneinander gelagert sein und der Vorsaugkolben kann zur Be­tätigung eines Einlaßventiles aus zwei gegeneinander in Richtung des Pumphubes verschiebbaren Teilen zusammengesetzt sein. Das unmittelbar im Bereich des Vorsaugkolbens liegen­de, gegebenenfalls nach Art einer Schiebersteuerung arbei­tende Einlaßventil dient als Übertritts-Ventil zwischen der Vorsaugkammer und der Pumpenkammer, so daß zwischen der Vor­saugkammer und dem Speicher kein gesondertes Einlaßventil erforderlich, sondern lediglich eine stets offene Leitungs­verbindung gegeben ist.The two pistons lying one inside the other can be mounted displaceably in the direction of the pump stroke in order to actuate an exhaust valve, and the pre-suction piston can be composed of two parts which can be displaced in the direction of the pump stroke in order to actuate an inlet valve. The inlet valve located directly in the area of the pre-suction piston, possibly operating in the manner of a slide control, serves as a transfer valve between the pre-suction chamber and the pump chamber, so that no separate inlet valve is required between the pre-suction chamber and the accumulator, but only an always open line connection.

Um bei noch leeren Kammern eine möglichst schnelle Füllung zu erzielen, ist zur Entlüftung der Pumpenkammer in der Hub­endstellung der Kolbeneinheit eine mechanisch geöffnete Druckentlastungs-Verbindung vorgesehen. Ist diese Druckent­lastungs-Verbindung durch anschlagbetätigtes Öffnen des Aus­laßventiles gebildet, so bedarf es hierzu keines gesonderten Entlüftungskanales und außerdem kann das Auslaßventil so ausgebildet sein, daß es bei mediengefüllter Pumpenkammer unter den beim Pumphub auftretenden Drücken bereits vor Er­reichen der Hubendstellung öffnet, so daß das Auslaßventil also unterhalb eines vorbestimmten Druckes mechanisch und oberhalb eines bestimmten Druckes durch Druckdifferenz ge­öffnet wird.In order to achieve the fastest possible filling when the chambers are still empty, a mechanically opened pressure relief connection is provided to vent the pump chamber in the stroke end position of the piston unit. If this pressure relief connection is formed by the stop-actuated opening of the outlet valve, then there is no need for a separate ventilation channel and the outlet valve can also be designed such that it opens when the pump chamber is filled with media under the pressures occurring during the pump stroke before the stroke end position is reached, so that the outlet valve is opened mechanically below a predetermined pressure and above a certain pressure by pressure difference.

Die erfindungsgemäße Austragvorrichtung kann in einfacher Weise so gestaltet werden, daß sie praktisch lageunabhängig gleich gut arbeitet und selbst in Überkopflage bei Ausgangs­stellung der Kolbeneinheit ein Auslaufen des Speichers durch die Austragvorrichtung verhindert ist.The discharge device according to the invention can be designed in a simple manner so that it works equally well practically regardless of position and even in the overhead position when the piston unit is in the initial position, the storage device is prevented from leaking by the discharge device.

Diese und weitere Merkmale von bevorzugten Weiterbildungen der Erfindung gehen auch aus der Beschreibung und den Zeich­nungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei einer Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein können. Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher erläutert. In den Zeichnungen zeigen:

  • Fig. 1 eine erfindungsgemäße Austragvorrichtung im Axialschnitt und in Ausgangslage,
  • Fig. 2 einen Ausschnitt der Figur 1 in vergrößerter Dar­stellung und kurz vor Erreichen der Hubendstel­lung der Kolbeneinheit,
  • Fig. 3 einen nochmals vergrößerten Ausschnitt der Figur 1, jedoch am Ende des Rückhubes und
  • Fig. 4 eine weitere Ausführungsform einer Austragvor­richtung in einer Darstellung entsprechend Figur 1.
These and further features of preferred developments of the invention are also apparent from the description and the drawings, the individual features being able to be implemented individually or in groups in the form of sub-combinations in one embodiment of the invention and in other fields. Embodiments of the invention are shown in the drawings and are explained in more detail below. The drawings show:
  • 1 is a discharge device according to the invention in axial section and in the starting position,
  • 2 shows a detail of FIG. 1 in an enlarged representation and shortly before the stroke end position of the piston unit is reached,
  • Fig. 3 is a further enlarged section of Figure 1, but at the end of the return stroke and
  • 4 shows a further embodiment of a discharge device in a representation corresponding to FIG. 1.

Wie die Figuren 1 bis 3 zeigen, weist eine erfindungsgemäße Austragvorrichtung 1 ein über den größten Teil seiner Länge im wesentlichen zylindrisches Zylindergehäuse 3 auf, das mit einer beispielsweise als Schraubkappe ausgebildeten Kappe 4 auf dem Hals eines als Speicher vorgesehenen Ge­fäßes 5 abgedichtet derart zu befestigen ist, daß es in den Gefäßhals nur mit geringem Spaltabstand eingreift und über den größten Teil seiner Länge innerhalb dieses Gefäßhalses liegt. Das Zylindergehäuse 3 ist an seinem äußeren bzw. hinteren Ende mit einem einteilig mit ihm ausgebildeten, radial über seinen Außenumfang vorstehenden Ringflansch 6 versehen, mit dem es unter Zwischenlage einer Dichtung ge­gen die Stirnseite des Gefäßhalses gespannt ist. Dieses äußere Ende des Zylindergehäuses 3 ist im wesentlichen mit einem Zylinderdeckel 7 verschlossen, der einen in das Zy­lindergehäuse eingreifenden Hülsenansatz und einen in dem Ringflansch 6 liegenden ringförmigen Flanschteil aufweist, welcher von der äußeren Stirnseite in eine Innennut des Ringflansches 6 eingesprengt und dadurch gesichert ist. Die äußeren Stirnflächen des Ringflansches 6 und des Zylin­derdeckels 7 liegen an einer ringförmigen Querwand 8 der Kappe 4 an, mit welcher somit auch der Zylinderdeckel 7 in seine abdichtende Befestigungslage gegen den Ringflansch 6 gepreßt werden kann.As shown in FIGS. 1 to 3, a discharge device 1 according to the invention has a cylinder housing 3 which is substantially cylindrical over most of its length and which is to be fastened in a sealed manner to the neck of a vessel 5 provided as a store using a cap 4, for example a screw cap that it only engages in the neck of the vessel with a small gap distance and lies within this neck of the vessel over most of its length. The cylinder housing 3 is provided at its outer or rear end with a ring flange 6 formed in one piece with it and projecting radially beyond its outer circumference, with which it is clamped against the end face of the vessel neck with the interposition of a seal. This outer end of the cylinder housing 3 is essentially closed with a cylinder cover 7, which has a sleeve extension engaging in the cylinder housing and an annular flange part lying in the ring flange 6, which is blown into the inner groove of the ring flange 6 from the outer end face and is thereby secured. The outer end faces of the ring flange 6 and the cylinder cover 7 rest against an annular transverse wall 8 of the cap 4, with which the cylinder cover 7 can thus also be pressed into its sealing fastening position against the ring flange 6.

In dem Zylindergehäuse 3 ist eine Kolbeneinheit 9 ver­schiebbar gelagert, die zwei koaxial ineinander liegende, im wesentlichen napfförmige und zum inneren Ende des Zylin­dergehäuses 3 mit ihren Napföffnungen weisende Arbeitskol­ ben, nämlich einen äußeren Pumpkolben 10 und einen in die­sem liegenden Vorsaugkolben 11 aufweist. Das innere Ende des Zylindergehäuses 3 bildet einen Zylinder 12 mit einer Kolbenlaufbahn 13 für zwei hintereinander liegende ringför­mige Dichtlippen des Pumpkolbens 10, die im Bereich beider Enden dieses Pumpkolbens 10 vorgesehen und entgegengesetzt kegelstumpfförmig bis zu Dichtkanten erweitert sind. Mit Abstand von der Kolbenlaufbahn 13 des Zylinders 12 liegt innerhalb diesem ein frei gegen die Kolbeneinheit 9 vorste­hender Vorsaugzylinder 15, der einteilig mit dem Zylinder­gehäuse 3 ausgebildet ist und von einer ringförmigen Boden­wand 18 absteht, die das innere Ende des Zylinders 12 bil­det. Von der äußeren Stirnseite dieser Bodenwand 18 steht ein einen Einlaßkanal 19 begrenzender Anschlußstutzen für ein beispielsweise bis in Bodennähe des Gefäßes 5 reichen­des Steigrohr ab. Die Außenumfangsfläche des Vorsaugzylin­ders 15 bildet die Kolbenlaufbahn 16 für den Vorsaugkolben 11, der den Vorsaugzylinder 15 in jeder Kolbenlage nach Art einer Überstülpung übergreift und an der Kolbenlaufbahn 16 mit einer an seinem vorderen Ende vorgesehenen Ringdicht­lippe geführt ist. Der Ringraum zwischen dem Zylinder 12 und dem Vorsaugzylinder 15, in welchem beide Kolben laufen, bildet die Pumpenkammer 14, während der vom Vorsaugzylinder 15 und vom Innern des Vorsaugkolbens 11 begrenzte Raum die demgegenüber längere Vorsaugkammer 17 bildet, in welcher eine Rückstellfeder 20 für die Kolbeneinheit 9 in Form einer Schraubendruckfeder liegt.In the cylinder housing 3, a piston unit 9 is slidably mounted, the two coaxially lying, essentially cup-shaped and facing the inner end of the cylinder housing 3 with its cup openings ben, namely an outer pump piston 10 and a pre-suction piston 11 located therein. The inner end of the cylinder housing 3 forms a cylinder 12 with a piston raceway 13 for two annular sealing lips of the pump piston 10 lying one behind the other, which are provided in the region of both ends of this pump piston 10 and are expanded in the opposite shape of a truncated cone to sealing edges. At a distance from the piston raceway 13 of the cylinder 12 there is a pre-suction cylinder 15 projecting freely against the piston unit 9, which is formed in one piece with the cylinder housing 3 and protrudes from an annular bottom wall 18 which forms the inner end of the cylinder 12. From the outer end face of this bottom wall 18 there is a connecting piece, which delimits an inlet channel 19, for a riser pipe, for example, reaching as far as the bottom of the vessel 5. The outer circumferential surface of the pre-suction cylinder 15 forms the piston track 16 for the pre-suction piston 11, which engages over the pre-suction cylinder 15 in each piston position in the manner of a slip and is guided on the piston track 16 with an annular sealing lip provided at its front end. The annular space between the cylinder 12 and the pre-suction cylinder 15, in which both pistons run, forms the pump chamber 14, while the space delimited by the pre-suction cylinder 15 and from the inside of the pre-suction piston 11 forms the longer pre-suction chamber 17, in which a return spring 20 for the piston unit 9 lies in the form of a helical compression spring.

Am hinteren Ende der Kolbeneinheit 9 ist ein unmittelbar mit dem Pumpkolben 10 verbundener bzw. einteilig ausgebil­deter, im wesentlichen zylindrischer Kolbenschaft 21 vorge­sehen, der den Zylinderdeckel 7 sowie die Querwand 8 mit Spaltabstand durchsetzt und auf dessen äußeres, im Durch­messer reduziertes Ende ein Betätigungskopf 22 aufgesetzt ist. Der rohrförmige Kolbenschaft 21 begrenzt einen mit der Pumpenkammer 14 unter Zwischenschaltung eines Auslaßventi­ les 23 verbundenen Auslaßkanal 24, der zu einer Auslaßöff­nung 25 im Betätigungskopf 22 führt. Der Betätigungskopf 22 greift in jeder Stellung in einen von der Querwand 8 abste­henden Kragen der Kappe 4 ein.At the rear end of the piston unit 9, a substantially cylindrical piston shaft 21 is provided which is directly connected to the pump piston 10 or is formed in one piece, which passes through the cylinder cover 7 and the transverse wall 8 with a gap distance and an actuating head 22 is placed on its outer, reduced-diameter end is. The tubular piston shaft 21 delimits one with the pump chamber 14 with the interposition of an outlet valve 23 connected outlet channel 24, which leads to an outlet opening 25 in the actuating head 22. The actuating head 22 engages in a position in a collar of the cap 4 projecting from the transverse wall 8.

Das der Vorsaugkammer 14 gegenüberliegende Ende des Vor­saugkolbens 11 ist mit einer Stirnwand geschlossen, die einen kegelstumpfförmigen Ventilschließteil 26 des Auslaß­ventiles 23 bildet, dessen Ventilsitz 27 in der zuge- höri­gen, mit dem Kolbenschaft 21 verbundenen Stirnwand des Pumpkolbens 10 am inneren Ende des Auslaßkanales 24 liegt. Der Vorsaugkolben 11 bzw. der Ventilschließteil 26 ist mit einem axial geschlitzten Schaft 28 in einem im Innendurch­messer erweiterten Abschnitt des Kolbenschaftes 21 bzw. des Auslaßkanales 24 axial verschiebbar derart geführt, daß durch Verschieben entgegen der Kraft der Rückstellfeder 20 das Auslaßventil 23 geöffnet werden kann. Dieser Abschnitt bildet einen Hals 29 des Kolbenschaftes 21, der gegenüber den übrigen, zwischen dem Pumpkolben 10 und dem Betäti­gungskopf 22 liegenden Abschnitten des Kolbenschaftes dünn­wandiger und unter bauchiger Aufweitung elastisch stauchbar ist. Der Ventilschließteil 26 bildet radial außerhalb des Ventilsitzes 27 eine über den Ringspalt zwischen den beiden Arbeitskolben dem Druck in der Pumpenkammer 14 ausgesetzte Kolbenstirnfläche, die flächengrößer als die vordere, ring­förmige Stirnfläche 30 des Vorsaugkolbens 11 ist. Beim Be­tätigen der Austragvorrichtung 1 durch Niederdrücken des Betätigungskopfes 22 entgegen der Kraft der Rückstellfeder 20 werden die vorderen Dichtlippen der beiden Arbeitskolben unter dem sich aufbauenden Druck dicht gegen die Kolben­laufbahnen 13, 16 gepreßt und bei Erreichen eines vorbe­stimmten Druckes wird das Auslaßventil 23 entgegen der Kraft der auch dieses Auslaßventil 23 zur Schließstellung belastenden Rückstellfeder 20 durch den Differenzdruck geöffnet, wobei sich der Vorsaugkolben 11 gegenüber dem Pumpkolben 10 nach vorne derart verschiebt, daß beispiels­ weise die vordere Stirnfläche 30 des Vorsaugkolbens 11 der vorderen Stirnfläche 31 des Pumpkolbens 10 gemäß Figur 2 vorauseilt. Schlägt nunmehr die vordere Stirnfläche 30 des Vorsaugkolbens 11 an der Bodenwand 18 an und wird die Kol­beneinheit 9 noch weiter vorgeschoben, so wird der Pumpkol­ben 10 bzw. der Ventilsitz 27 gegenüber dem Vorsaugkolben 11 wieder in Richtung Schließlage des Auslaßventiles 23 bewegt, so daß der Durchlaßquerschnitt des Auslaßventiles 23 wesentlich verengt wird. Da die vordere Stirnfläche 30 in der Schließlage des Auslaßventiles 23 gegenüber der vor­deren Stirnfläche 31 geringfügig zurücksteht, wird hierbei das Auslaßventil 23 noch nicht ganz geschlossen, sondern dies erfolgt nach entsprechendem Druckabbau erst durch die Rückstellfeder 20.The end of the pre-suction piston 11 opposite the pre-suction chamber 14 is closed with an end wall which forms a frusto-conical valve closing part 26 of the outlet valve 23, the valve seat 27 of which lies in the associated end wall of the pump piston 10 connected to the piston shaft 21 at the inner end of the outlet channel 24 . The pre-suction piston 11 or the valve closing part 26 is guided with an axially slotted shaft 28 in an axially displaceable section of the piston shaft 21 or the outlet channel 24 in such a way that the outlet valve 23 can be opened by shifting against the force of the return spring 20. This section forms a neck 29 of the piston shaft 21, which is thin-walled and elastically compressible with a bulging bulge compared to the remaining sections of the piston shaft lying between the pump piston 10 and the actuating head 22. The valve closing part 26 forms radially outside the valve seat 27 a piston end face which is exposed to the pressure in the pump chamber 14 via the annular gap between the two working pistons and which is larger in area than the front, annular end face 30 of the pre-suction piston 11. When the discharge device 1 is actuated by depressing the actuating head 22 against the force of the return spring 20, the front sealing lips of the two working pistons are pressed tightly against the piston raceways 13, 16 under the pressure which builds up, and when a predetermined pressure is reached, the outlet valve 23 is pressed against the force of the also this outlet valve 23 to the closed position loading return spring 20 opened by the differential pressure, the pre-suction piston 11 being displaced forward relative to the pump piston 10 such that, for example the front end face 30 of the pre-suction piston 11 leads the front end face 31 of the pump piston 10 according to FIG. If the front end face 30 of the suction piston 11 strikes against the bottom wall 18 and the piston unit 9 is advanced even further, the pump piston 10 or the valve seat 27 is moved relative to the suction piston 11 again in the direction of the closed position of the exhaust valve 23, so that the passage cross section of the exhaust valve 23 is significantly narrowed. Since the front end face 30 is slightly behind in the closed position of the outlet valve 23 relative to the front end face 31, the outlet valve 23 is not yet completely closed, but instead takes place only after the corresponding pressure reduction by the return spring 20.

Zur Füllung der Pumpenkammer 14 aus der Vorsaugkammer 17 ist ein Übertritt-Ventil 32 vorgesehen, das mechanisch in Abhängigkeit von der Bewegungsrichtung der Kolbeneinheit 9 bzw. des Vorsaugkolbens 11 geöffnet und geschlossen wird und baulich mit dem Vorsaugkolben 11 derart vereint ist, daß sowohl sein Ventilschließteil 33 als auch sein Ventil­sitz 34 am Vorsaugkolben 11 vorgesehen ist. Zu diesem Zweck weist der Vorsaugkolben 11 eine durch einen gesonderten Bauteil gebildete Kolbenhülse 35 auf, die über eine Schnappverbindung axial begrenzt zwischen einer Öffnungs- ­und einer Schließstellung beweglich mit der Kolbenstirnwand bzw. dem Ventilschließteil 26 des Auslaßventiles 23 verbun­den ist. Diese Kolbenhülse 35, die nahezu über die gesamte Länge der entsprechenden Kolbenhülse 36 des Pumpkolbens 10 reicht, bildet mit ihrer hinteren Stirnseite den um die Pumpenachse rinförmigen, im Querschnitt nach hinten ver­jüngten Ventilschließteil 33, dem als Ventilsitz 34 eine im Querschnitt komplementäre Ringnut in der vorderen Stirn­fläche der Kolbenstirnwand zugeordnet ist. Am Innenumfang der Kolbenhülse 35 liegen mehrere gleichmäßig über den Um­gang verteilte, radial federnde und einteilig von der Kol­ benstirnwand abstehende Schnappglieder 38 mit radial nach außen vorstehenden Schnappnocken, die einer als Gegeglied vorgesehenen Innenringschulter der Kolbenhülse 35 zugeord­net sind und so im Abstand vom Ventilsitz 34 liegen, daß die Kolbenhülse 35 aus der in den Ventilsitz 34 dicht ein­greifenden Schließlage axial nach vorne bis zum Anschlag an den Nocken in eine Öffnungslage bewegt werden kann, in wel­cher das Übertrittsventil 32 im bereich des hinteren Endes des Vorsaugkolbens 11 einen Ventildurchlaß 39 zwischen der Vorsaugkammer 17 und dem von den Kolbenhülsen 35, 36 be­grenzten Ringspalt freigibt.To fill the pump chamber 14 from the pre-suction chamber 17, a transfer valve 32 is provided, which is opened and closed mechanically depending on the direction of movement of the piston unit 9 or the pre-suction piston 11 and is structurally combined with the pre-suction piston 11 in such a way that both its valve closing part 33 and its valve seat 34 is provided on the pre-suction piston 11. For this purpose, the pre-suction piston 11 has a piston sleeve 35 which is formed by a separate component and is axially limited by a snap connection between an open and a closed position and is movably connected to the piston end wall or the valve closing part 26 of the exhaust valve 23. This piston sleeve 35, which extends almost over the entire length of the corresponding piston sleeve 36 of the pumping piston 10, forms with its rear end face the valve-closing part 33, which is tapered in cross section toward the rear of the pump axis and which, as the valve seat 34, has an annular groove in the front that is complementary in cross section Face of the piston end wall is assigned. On the inner circumference of the piston sleeve 35 are several, radially resilient and distributed in one piece by the piston, evenly distributed over the handling benstirnwand protruding snap members 38 with radially outwardly projecting snap cams which are associated with an inner ring shoulder provided as a link of the piston sleeve 35 and are at a distance from the valve seat 34 that the piston sleeve 35 from the tightly engaging valve seat 34 in the closed position axially forward to the stop can be moved to the cam in an open position in which the transfer valve 32 in the region of the rear end of the pre-suction piston 11 releases a valve passage 39 between the pre-suction chamber 17 and the annular gap delimited by the piston sleeves 35, 36.

Wird die Kolbeneinheit 9 aus der Ausgangslage in Richtung des Pumphubes bewegt, so wird der Ventilschließteil 33 in­folge der Reibung zwischen Vorsaugkolben 11 und Kolben­laufbahn 16 schließend gegen den Ventilsitz 34 gedrückt, so daß der Druck in der Pumpenkammer 14 nicht durch das Über­trittsventil 32 in die Vorsaugkammer 17 entweichen kann. Bei der Rückhubbewegung wird der Ventilschließteil wiederum infolge der genannten Reibung bis zum Anschlag aus dem Ven­tilsitz 34 herausgezogen, so daß infolge des sich in der Pumpenkammer 14 aufbauenden Unterdruckes Medium durch das geöffnete Übertrittsventil 32 aus der Vorsaugkammer 17 in die Pumpenkammer 14 gesaugt wird.If the piston unit 9 is moved from the starting position in the direction of the pump stroke, the valve closing part 33 is pressed against the valve seat 34 due to the friction between the pre-suction piston 11 and the piston race 16, so that the pressure in the pump chamber 14 does not pass through the transfer valve 32 into the pre-suction chamber 17 can escape. During the return stroke movement, the valve closing part is again pulled out of the valve seat 34 as a result of the aforementioned friction, so that medium is sucked through the opened transfer valve 32 from the pre-suction chamber 17 into the pump chamber 14 as a result of the negative pressure building up in the pump chamber 14.

Der Kolbenschaft 21 bildet einen einteilig mit ihm ausge­bildeten und dem hinteren Ende des Schaftes 28 gegenüber­liegenden Mitnehmer 40, welcher bei geschlossenem Auslaß­ventil 23 in geringem Abstand von der durch die hintere Endfläche gebildeten Gegenfläche des Ventilschließteiles 26 bzw. des Schaftes 28 liegt. Befindet sich der Pumkolben 10 in seiner an der Bodenwand 18 anliegenden Hubendstellung, so liegt der Hals 29 nicht mehr gefasst innerhalb des Zy­linderdeckels 7, sondern über den größten Teil seiner Länge frei innerhalb des Zylindergehäuses. Wird der Betatigungs­kopf 22 nunmehr weitergedrückt, so wird der Hals 29 durch Stauchung aufgeweitet bzw. verkürzt, so daß der Mitnehmer 40 auf den Schaft 28 aufläuft und diesen mitnimmt, bis bei geschlossenem Übertrittsventil 32 die Stirnfläch 30 des Vorsaugkolbens 11 ebenfalls durch Anschlagbegrenzung an der Bodenwand 18 festgelegt wird. Hierbei ist dann das Auslaß­ventil 23 mit relativ geringem Öffnungsquerschnitt geöff­net, so daß gegebenenfalls eine wirksame Entlüftung der Pumpenkammr 14 erfolgen kann.The piston shaft 21 forms a driver 40 which is formed in one piece with it and is located opposite the rear end of the shaft 28 and which, when the outlet valve 23 is closed, lies at a short distance from the counter surface of the valve closing part 26 or the shaft 28 formed by the rear end surface. If the pump piston 10 is in its stroke end position lying against the bottom wall 18, the neck 29 no longer lies within the cylinder cover 7, but rather freely within the cylinder housing over most of its length. If the actuating head 22 is now pressed further, the neck 29 is pressed through Compression widened or shortened, so that the driver 40 runs onto the shaft 28 and takes it along until the end face 30 of the pre-suction piston 11 is also fixed by limit stop on the bottom wall 18 when the transfer valve 32 is closed. In this case, the outlet valve 23 is then opened with a relatively small opening cross section, so that, if necessary, the pump chamber 14 can be effectively vented.

Der Zylinderdeckel 7 weist zur Führung des Außenumfangs des Halses 29 gleichmäßig über den Umfang verteilte Längsrippen 41 auf, die an hinteren Enden in Radialrippen an der äuße­ren Stirnseite des ringförmigen Flanschteiles des Zylin­derdeckels 7 übergehen, welche mit ihren Rippenkanten an der Querwand 8 anliegen. Die vorderen Enden der Längsrippen 41 sind gegenüber dem zugehörigen Ende des Hülsenansatzes des Zylinderdeckels 7 zurückversetzt, so daß dieses, im Durchmesser reduzierte Ende einen Ventilsitz eines bei Aus­gangslage der Kolbeneinheit 9 geschlossenen belüftungsven­tiles bilden kann, dessen Ventilschließteil durch einen an die Kolbenstirnwand des Pumpkolbens 10 anschließenden, ke­gelstumpfförmigen Abschnitt des Kolbenschaftes 21 gebildet ist. Über das Belüftungsventil wird das Gefäß 5 belüftet, wofür hinter dem Pumpkolben 10 in der Wandung des Zylinder­gehäuses 3 Belüftungsöffnungen vorgesehen sind, die im we­sentlichen durch den Hülsenansatz des Zylinderdeckels 7 überdeckt sind. Durch die Längsrippen 41 wird der Hals 29 selbst dann, wenn er für eine Streckung nicht die ausrei­chende Elastizität aufweist, beim Rückhub zwangsläufig wie­der in seine Strecklage bzw. in seine nicht gestauchte Lage zurückgeführt.For guiding the outer circumference of the neck 29, the cylinder cover 7 has longitudinal ribs 41 distributed evenly over the circumference, which at the rear ends merge into radial ribs on the outer end face of the annular flange part of the cylinder cover 7, the rib edges of which abut the transverse wall 8. The front ends of the longitudinal ribs 41 are set back relative to the associated end of the sleeve extension of the cylinder cover 7, so that this end, which has a reduced diameter, can form a valve seat of a ventilation valve closed when the piston unit 9 is in its initial position, the valve closing part of which is connected to the piston end wall of the pump piston 10 by a valve , frustoconical portion of the piston skirt 21 is formed. The vessel 5 is aerated via the ventilation valve, for which purpose 3 ventilation openings are provided behind the pump piston 10 in the wall of the cylinder housing, which are essentially covered by the sleeve extension of the cylinder cover 7. Through the longitudinal ribs 41, the neck 29, even if it does not have sufficient elasticity for stretching, is inevitably returned to its extended position or to its non-compressed position during the return stroke.

In Figur 4 sind für einander entsprechende Teile die glei­chen Bezugszeichen wie in den übrigen Figuren, jedoch mit dem Index "a" verwendet. Das Zylindergehäuse 3a ist im Durchmesser derart abgestuft ausgebildet, daß ein äußerer, über die Stirnwand der Kappe 4a frei vorstehender Gehäuse­teil weiter und ein innerer, den Zylinder 12a bildender Teil schlanker ist, wobei der Kolben 10a im weiteren Teil mit seiner hinteren Dichtlippe geführt ist, die im Durch­messer entsprechend größer als die vordere, im Zylinder12a geführte Dichtlippe ist. Das Zylindergehäuse 3a ist ein­teilig mit der Kappe 4a ausgebildet, wobei über die Innen­seite von deren Stirnwand ein einteilig mit der Kappe 4a ausgebildeter Muffenteil 42 vorsteht, der am Außenumfang zu seinem Ende derart anähernd spitzwinklig konisch verjüngt ist, daß er statt einer gesonderten Dichtung unter Dicht­pressung in den Innenumfang des Gefäßhalses eingreift. Der Muffenteil 42 umgibt den Zylinder 12a mit Abstand, derart, daß eine zum Gefäß offene Ringnut gebildet ist, deren Bo­denfläche im wesentlichen durch eine Ringschulter zwischen dem weiteren und engeren Teil des Zylindergehäuses 3a be­grenzt ist. In dieser Ringschulter liegen Durchgangsöffnun­gen 43, welche den Raum hinter der vorderen Kolbenlippe des Pumpkolbens 10a mit dem Gefäß verbinden. Am Innenumfang des weiteren Abschnittes des Zylindergehäuses 3a sind Längska­näle 44 vorgesehen, die an die Durchgangsöffnungen 43 an­schließen und bei Ausgangslage des Pumpkolbens 10a vor des­sen hinterer Kolbenlippe enden. Jeder Längskanal ist durch mindestens eine über den Innenumfang des Zylindergehäuses 3a vorstehende, in Richtung des Pumphubes unter einem fla­chen Winkel schräg ansteigende Längsrippe gebildet, auf welche die hintere Kolbenlippe während des Pumphubes auf­läuft und dabei so radial nach innen eingedellt wird, daß beiderseits der Längsrippe durch die elastische Verformung dieser Kolbenlippe Öffnungen freigegeben werden. Das hinte­re Ende des Zylindesrgehäuses 3a ist nicht durch einen ge­sonderten Zylinderdeckel verschlossen, sondern durch aus dem Mantel des Zylindergehäuses 3a radial nach innen bei­spielsweise durch Ultraschall abgewinkelte Mantellaschen 7a begrenzt, welche als Anschlag für den Pumpkolben 10a in der Ausgangsstellung dienen. Es können mehrere, z.B. drei gleichmäßig über den Umfang verteilte Matellaschen 7a vor­gesehen sein, wobei in diesem Fall der Betätigungskopf 22a zweckmäßig das Zylindergehäuse 3a am Außenumfabng über­greift und in seiner Ausgangsstellung ebenfalls durch An­schlag gegenüber dem Zylindergehäuse 3a gesichert ist. Zu diesem Zweck weist das Zylindergehäuse 3a am äußeren Ende einen über seinen Außenumfang vostehenden Ringbund auf, über welchen der kappenförmige Betätigungskopf 22a mit einem entsprechenden, an seinem Innenumfang vorgesehenen Ringbund durch federndes Aufschnappen aufgesetzt ist.In FIG. 4, the same reference numerals are used for corresponding parts as in the other figures, but with the index "a". The cylinder housing 3a is graduated in diameter such that an outer, Over the front wall of the cap 4a freely projecting housing part further and an inner, the cylinder 12a forming part is slimmer, the piston 10a is guided in the further part with its rear sealing lip, which is correspondingly larger in diameter than the front sealing lip guided in the cylinder 12a . The cylinder housing 3a is formed in one piece with the cap 4a, with a sleeve part 42 formed in one piece with the cap 4a protruding from the inside of its end wall, which is tapered at the outer circumference to its end in an approximately conical angle such that instead of a separate seal under sealing pressure engages in the inner circumference of the neck of the vessel. The sleeve part 42 surrounds the cylinder 12a at a distance, such that an annular groove open to the vessel is formed, the bottom surface of which is essentially delimited by an annular shoulder between the further and narrower part of the cylinder housing 3a. In this annular shoulder there are through openings 43 which connect the space behind the front piston lip of the pump piston 10a with the vessel. On the inner circumference of the further section of the cylinder housing 3a, longitudinal channels 44 are provided which connect to the through openings 43 and end in the initial position of the pump piston 10a in front of its rear piston lip. Each longitudinal channel is formed by at least one longitudinal rib protruding over the inner circumference of the cylinder housing 3a and rising obliquely in the direction of the pump stroke at a flat angle, onto which the rear piston lip runs during the pump stroke and is dented radially inward so that the longitudinal rib passes through on both sides the elastic deformation of this piston lip openings are released. The rear end of the cylinder housing 3a is not closed by a separate cylinder cover, but rather is delimited radially inward from the jacket of the cylinder housing 3a, for example by ultrasound angled jacket straps 7a, which serve as a stop for the pump piston 10a in the starting position. There can be several, for example three evenly distributed over the circumference mat tabs 7a may be provided, in which case the actuating head 22a expediently overlaps the cylinder housing 3a on the outer circumference and is also secured in its starting position by a stop relative to the cylinder housing 3a. For this purpose, the cylinder housing 3a has an annular collar projecting over its outer circumference at the outer end, over which the cap-shaped actuating head 22a with a corresponding annular collar provided on its inner circumference is fitted by resilient snapping on.

Das Übertrittsventil 32 a ist in diesem Fall als im Bereich des vorderen Endes des Vorsaugkolbens 11a liegendes Schie­berventil ausgebildet, dessen Ventilschließteil 33a durch die vordere Kolbenlippe des Vorsaugkolbens 11a gebildet ist. Am freien Ende des Vorsaugzylinders 15a sind Über­trittsöffnungen 39a in Form beispielsweise von Längsschlit­zen vorgesehen, welche in der Ausgangsstellung der Kolben­einheit 9a von dem Ventilschließteil 33a derart freigegeben sind, daß sie eine Verbindung zwischen der Vorsaugkammer 17a und der Pumpenkammer 14a herstellen. Sobald der Vor­saugkolben 11a in Richtung des Pumphubes über eine erste kleine Wegstrecke bewegt ist, sind diese Übertrittsöffnun­gen 39a geschlossen.In this case, the transfer valve 32a is designed as a slide valve lying in the region of the front end of the pre-suction piston 11a, the valve closing part 33a of which is formed by the front piston lip of the pre-suction piston 11a. At the free end of the pre-suction cylinder 15a there are transition openings 39a in the form of, for example, longitudinal slots, which in the initial position of the piston unit 9a are released by the valve closing part 33a in such a way that they establish a connection between the pre-suction chamber 17a and the pump chamber 14a. As soon as the pre-suction piston 11a is moved in the direction of the pump stroke over a first small distance, these transfer openings 39a are closed.

Der Pumpkolben 11a weist im Innern einen frei nach vorne vorstehenden, praktisch eine Verlängerung des Schaftes 28a bildenden Stößel 45 auf, der bei vorderer Endstellung des Vorsaugkolbens 11a an der Bodenwand der Vorsaugkammer 17a anschlägt, so daß auf die Kolbenhülse des Vorsaugkolbens 11a nur sehr geringe Anschlagkräfte wirken.The pumping piston 11a has a plunger 45 protruding freely forward and practically forming an extension of the shaft 28a, which strikes the bottom wall of the suction chamber 17a when the suction piston 11a is in the front end position, so that only very small stop forces act on the piston sleeve of the suction piston 11a Act.

Claims (10)

1. Austragvorrichtung für Medien, insbesondere Flüssigkeiten, mit einer handbetätigbaren Pumpe (2), deren Pumpenkammer (14) zur Füllung aus einem Speicher mit einem Einlaß verbindbar und zum Austragen einen zu einer Auslaßöffnung (25) führenden Auslaßkanal (24) angeschlossen ist, dadurch gekennzeichnet, daß minde­stens eine Vorsaugeinrichtung mit innenliegender Vor­saugkammer (17) für die Pumpe (2) vorgesehen ist.1. Discharge device for media, in particular liquids, with a manually operable pump (2), the pump chamber (14) for filling from a memory can be connected to an inlet and for discharge a discharge channel (24) leading to an outlet opening (25) is connected, thereby characterized in that at least one pre-suction device with an internal pre-suction chamber (17) is provided for the pump (2). 2. Austragvorrichtung, insbesondere nach Anspruch 1, da­durch gekennzeichnet, daß die als Schubkolbenpumpe (2) ausgebildete Pumpe ein Zylindergehäuse (3) mit einem in einem Zylinder (12) entlang einer Zylinderlaufbahn (13) über einen Pumphub aus einer Augangsstellung (Fig. 1) bis in eine Hubendstellung verfahrbaren Pumpkolben (10) einer Kolbeneinheit (9) aufweist, der in dem Zylinder (12) die Pumpenkammer (14) begrenzt, wobei der Pumpen­kammer (14) auf der Einlaßseite die Vorsaugkammer (17) mit einem Vorsaugkolben (11) vorgeschaltet ist, die über einen Übertritt (32) mit der Pumpenkammer (14) verbindbar und beim Pumphub gegenüber der Pumpenkammer (14) abgeschlossen ist und wobei ferner vorzugsweise die Vorsaugkammer (17) wenigstens teilweise innerhalb der Pumpenkammer (14) liegend von der Pumpenkammer (14) umgeben ist bzw. der Pumpkolben (10) und der Vorsaug­kolben (11) wenigstens teilweise ineinander liegen.2. Discharge device, in particular according to claim 1, characterized in that the pump designed as a thrust piston pump (2) has a cylinder housing (3) with a in a cylinder (12) along a cylinder track (13) Via a pump stroke from an initial position (FIG. 1) to a stroke end position, the pump piston (10) of a piston unit (9) can be moved and delimits the pump chamber (14) in the cylinder (12), the pump chamber (14) on the inlet side the pre-suction chamber (17) is connected upstream with a pre-suction piston (11), which can be connected to the pump chamber (14) via an overflow (32) and is closed off from the pump chamber (14) during the pump stroke, and further preferably the pre-suction chamber (17) at least partially lying within the pump chamber (14) is surrounded by the pump chamber (14) or the pump piston (10) and the pre-suction piston (11) are at least partially in one another. 3. Austragvorrichtung, insbesondere nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß ein die Vorsaugkammer (17) bildender Kammerkörper (15) im wesentlichen achs­gleich in der Pumpenkammer (14) liegt und insbesondere der Vorsaugkolben (11) an einer durch eine Außenum­fangsfläche des Kammerkörpers (15) gebildeten Kolben­laufbahn (16) geführt ist und daß vorzugsweise der Vor­saugkolben (11) eine etwa zylindrische Kolbenhülse (35) aufweist, die als gesonderter Bauteil mit Spaltabstand innerhalb einer Kolbenhülse (36) des Pumpkolbens (10) liegt und insbesondere am Außenumfang des Pumpkolbens (10) und am Innenumfang des Vorsaugkolbens (11) vorge­sehene Kolben-Dichtlippen im wesentlichen im selben Längsbereich des Zylindergehäuses (3) vorgesehen sind.3. Discharge device, in particular according to claim 1 or 2, characterized in that a chamber body (15) forming the pre-suction chamber (17) lies substantially axially in the pump chamber (14) and in particular the pre-suction piston (11) on one through an outer peripheral surface of the chamber body (15) formed piston raceway (16) and that preferably the pre-suction piston (11) has an approximately cylindrical piston sleeve (35) which is a separate component with a gap within a piston sleeve (36) of the pump piston (10) and in particular on the outer circumference of the Pump pistons (10) and piston sealing lips provided on the inner circumference of the pre-suction piston (11) are provided essentially in the same longitudinal region of the cylinder housing (3). 4. Austragvorrichtung, insbesondere nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß der Vorsaugkolben (11) zur Betätigung eines Auslaßventiles (23) gegenüber bzw. an dem Pumpkolben (10) verschiebbar gelagert ist und insbesondere am hinteren Ende der Kol­benhülse (35) eine größere Kolbenstirnfläche als am vorderen Ende bildet, daß vorzugsweise das hintere Ende des Vorsaugkolbens (11) mit einer Stirnwand geschlossen ist, die insbesondere am Außenumfang einen etwa kegel­stumpfförmigen Ventilschließteil (26) des Auslaßven­tiles (23) bildet, dem als Ventilsitz (27) eine Innen­schulter am hinteren Ende des Pumpkolbens (10) zugeord­net ist und daß vorzugsweise der Vorsaugkolben (11) mit einem an seinem hinteren Ende vorgesehenen Schaft (28) in einem rohrförmigen Hals (29) am hinteren Ende des Pumpkolbens (10) geführt ist bzw. ein Schaft (28) un­mittelbar an den Ventilschließteil (26) des Auslaßven­tiles (23) anschließt und mit einem Hals (29) einen Abschnitt des Auslaßkanals (24) begrenzt, wobei vor­zugsweise der stauchbare Hals (29) einteilig mit dem Kolbenschaft (21) und/oder mit dem Pumpkolben (10) ausgebildet und gegenüber benachbarten Schaftabschnit­ten dünnwandiger ist.4. Discharge device, in particular according to one of the preceding claims, characterized in that the pre-suction piston (11) for actuating an outlet valve (23) relative to or on the pump piston (10) is slidably mounted and in particular at the rear end of the piston sleeve (35) larger piston face than on Front end forms that preferably the rear end of the pre-suction piston (11) is closed with an end wall, which in particular on the outer circumference forms an approximately frustoconical valve closing part (26) of the exhaust valve (23), which has an inner shoulder as a valve seat (27) at the rear end of the Pump piston (10) is assigned and that preferably the pre-suction piston (11) with a shaft (28) provided at its rear end is guided in a tubular neck (29) at the rear end of the pump piston (10) or a shaft (28) directly connects to the valve closing part (26) of the outlet valve (23) and delimits a section of the outlet channel (24) with a neck (29), the compressible neck (29) preferably being in one piece with the piston shaft (21) and / or with the pump piston ( 10) and is thin-walled in relation to adjacent shaft sections. 5. Austragvorrichtung, insbesondere nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß der Übertritt zwischen der Vorsaugkammer (17) und der Pum­penkammer (14) mit einem Übertrittsventil (32) ver­schließar ist, das insbesondere wenigstens am Ende des Rückhubes geöffnet und/oder mindestens teilweise unmit­telbar durch die Kolbenhülse (35) gebildet ist sowie vorzugsweise zwei gegeneinander verschiebbare, insbe­sondere ringförmige Ventilteile (33, 34) aufweist, von denen bevorzugt einer durch den Vorsaugkolben gebildet ist bzw. an einem Ende der zugehörigen Kolbenhülse (35) liegt, wobei vorzugsweise das hintere Ende der Kolben­hülse (35) des Vorsaugkolbens (11) mit der zugehörigen Stirnwand über insbesondere keilförmige Ringprofile axial begrenzt beweglich in Eingriff steht bzw. die Kolbenhülse (35) über eine an ihrem Innenumfang liegen­ de Schnappverbindung (37) an der Stirnwand gehaltert ist und die Ringprofile die Ventilteile des Übertritts­ventiles (32) bilden.5. Discharge device, in particular according to one of the preceding claims, characterized in that the transition between the pre-suction chamber (17) and the pump chamber (14) with a transfer valve (32) is closable, which is particularly open at least at the end of the return stroke and / or at least partially formed directly by the piston sleeve (35) and preferably has two mutually displaceable, in particular annular valve parts (33, 34), one of which is preferably formed by the pre-suction piston or is located at one end of the associated piston sleeve (35), preferably the rear end of the piston sleeve (35) of the pre-suction piston (11) engages with the associated end wall in an axially limited manner via, in particular, wedge-shaped ring profiles, or the piston sleeve (35) lies on its inner circumference de snap connection (37) is held on the end wall and the ring profiles form the valve parts of the transfer valve (32). 6. Austragvorrichtung, insbesondere nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß der Übertritt zwischen der Vorsaugkammer (17) und der Pum­penkammer (14) ein Schieberventil aufweist und daß vor­zugsweise Übertrittsöffnungen (39a) im freien Ende des Kammerkörpers (15a) am Ende des Rückhubes von der als Ventilschließteil (33a) vorgesehenen Kolben-Dichtlippe des Vorsaugkolbens (11a) freigegeben sind.6. Discharge device, in particular according to one of the preceding claims, characterized in that the passage between the pre-suction chamber (17) and the pump chamber (14) has a slide valve and that preferably passage openings (39a) in the free end of the chamber body (15a) at the end of Return stroke of the piston sealing lip of the pre-suction piston (11a) provided as valve closing part (33a) are released. 7. Austragvorrichtung, insbesondere nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß die Vorsaugkammer (17) von einem frei in das Zylindergehäu­se (3) vorstehenden, ringförmig von der Pumpenkammer (14) umgebenen Kammerkörper (15) und dem teleskopartig mit diesem in Eingriff stehenden Vorsaugkolben (11) begrenzt und insbesondere eine in der Vorsaugkammer (17) liegende Rückstellfeder (20) für den Pumpkolben (10) als Schließfeder für das Auslaßventil (23) ange­ordnet ist, daß vorzugsweise die Pumpenkammer (14) mit einer am Ende des Pumphubes mechanisch zwangsgeöffne­ten, ins Freie führenden Druckentlastungs-Verbindung versehen ist, die insbesondere durch eine anschlagge­steuerte, begrenzte Öffnung des Auslaßventiles (23) gebildet ist und daß vorzugsweise mit einem Betäti­gungskopf (22) für den Pumpkolben (10) ein für den Ven­tilschließteil (26) des Auslaßventiles (23) vorgese­hener Mitnehmer (40) verbunden ist, der den Ventil­schließteil (26) am Ende des Pumphubes gegenüber dem Pumpkolben (10) mitnimmt und insbesondere an dem durch Stauchung verkürzbaren Hals (29) des Pumpkolbens (10) bzw. des Kolbenschaftes (21) vorgesehen ist.7. discharge device, in particular according to one of the preceding claims, characterized in that the pre-suction chamber (17) from a freely in the cylinder housing (3) projecting, annularly surrounded by the pump chamber (14) chamber body (15) and the telescopically engaged therewith standing suction piston (11) and in particular a return spring (20) for the pump piston (10) in the suction chamber (17) is arranged as a closing spring for the outlet valve (23), that preferably the pump chamber (14) with one at the end of the pump stroke mechanically positively opened, leading pressure relief connection is provided, which is formed in particular by a stop-controlled, limited opening of the outlet valve (23) and that preferably with an actuating head (22) for the pump piston (10) one for the valve closing part (26) of the Exhaust valve (23) provided driver (40) is connected, the valve closing part (26) at the end of the pump stroke opposite de m carries the pump piston (10) and is provided in particular on the neck (29) of the pump piston (10) or the piston shaft (21) which can be shortened by compression. 8. Austragvorrichtung, insbesondere nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß ein durch Stauchung aufweitbare Hals (29) des Pumpkolbens (10) in dessen Ausgangsstellung wenigstens teilweise an seinem Außenumfang gegen Aufweitung gefaßt, insbesonde­re über den größten Teil seiner Länge an Längsrippen (41) eines Zylinderdeckels (7) des Zylindergehäuses (3) gleitbar geführt ist.8. discharge device, in particular according to one of the preceding claims, characterized in that an expandable neck (29) of the pump piston (10) in its starting position at least partially on its outer circumference against expansion, in particular over most of its length on longitudinal ribs ( 41) of a cylinder cover (7) of the cylinder housing (3) is slidably guided. 9. Austragvorrichtung, insbesondere nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß zur belüftung des Speichers in einer Kolbenlaufbahn minde­stens ein Längskanal (54) vorgesehen ist, dessen hinte­res Ende bei Ausgangsstellung vor einer Kolbenlippe der Kolbeneinheit (9a) liegt und dessen vorderes Ende vor­zugsweise über eine in einer an das hintere Ende der Pumpenkammer (14a) anschließenden Ringschulter des Zy­lindergehäuses (3a) liegende Durchgangsöffnung (43) mit dem Speicher verbunden ist.9. discharge device, in particular according to one of the preceding claims, characterized in that at least one longitudinal channel (54) is provided for ventilation of the memory in a piston raceway, the rear end of which is in the starting position in front of a piston lip of the piston unit (9a) and the front end is preferably is connected to the accumulator via a through opening (43) located in an annular shoulder of the cylinder housing (3a) which adjoins the rear end of the pump chamber (14a). 10. Austragvorrichtung, insbesondere nach einem der vorher­gehenden Ansprüche, dadurch gekennzeichnet, daß das hintere Ende des Zylindergehäuses (3a) von einem ein­teilig mit ihm ausgebildeten Bauteil, insbesondere von mindestens einer abgewinkelten Mantellasche (7a) be­grenzt ist bzw. der Betätigungskopf (22a) das hintere, frei vorstehende Ende des Zylindergehäuses (3a) durch Übergreifen abschließt und daß vorzugsweise das Zylin­dergehäuse (3a) einteilig mit einer Kappe (4a) zur Be­festigung an einem Gefäßhals und/oder mit einem als Dichtung vorgesehenen Muffenteil (42) ausgebildet ist.10. Discharge device, in particular according to one of the preceding claims, characterized in that the rear end of the cylinder housing (3a) is limited by a component formed in one piece with it, in particular by at least one angled jacket flap (7a) or the actuating head (22a) the rear, freely projecting end of the cylinder housing (3a) closes by reaching over and that the cylinder housing (3a) is preferably formed in one piece with a cap (4a) for attachment to a neck of the vessel and / or with a sleeve part (42) provided as a seal.
EP88106258A 1987-05-08 1988-04-20 Fluid dispenser Expired - Lifetime EP0289855B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88106258T ATE77594T1 (en) 1987-05-08 1988-04-20 DISPENSING DEVICE FOR MEDIA.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3715301 1987-05-08
DE19873715301 DE3715301A1 (en) 1987-05-08 1987-05-08 DISCHARGE DEVICE FOR MEDIA

Publications (3)

Publication Number Publication Date
EP0289855A2 true EP0289855A2 (en) 1988-11-09
EP0289855A3 EP0289855A3 (en) 1989-12-06
EP0289855B1 EP0289855B1 (en) 1992-06-24

Family

ID=6327067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88106258A Expired - Lifetime EP0289855B1 (en) 1987-05-08 1988-04-20 Fluid dispenser

Country Status (4)

Country Link
US (1) US5011046A (en)
EP (1) EP0289855B1 (en)
AT (1) ATE77594T1 (en)
DE (2) DE3715301A1 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0342651A1 (en) * 1988-05-18 1989-11-23 Societe Technique De Pulverisation Step Dosing pump
DE3929064A1 (en) * 1989-06-29 1991-01-10 Henkel Kgaa Atomiser head for spraying liq. from container - has pump which is actuated by depressing container cap
US4986453A (en) * 1989-05-15 1991-01-22 The Pittway Corporation Atomizing pump
EP0430431A2 (en) * 1989-11-27 1991-06-05 Specialty Packaging Licensing Company, Inc. Atomizing fluid dispenser
US5284276A (en) * 1992-10-21 1994-02-08 Bespak Plc Pump dispenser with combined inlet and outlet ports
GB2286230A (en) * 1994-02-03 1995-08-09 Bespak Plc Dispensing apparatus
US5443185A (en) * 1990-11-09 1995-08-22 Ing. Erich Pfeiffer Gmbh & Co. K.G. Dispenser for media
US5655688A (en) * 1994-10-19 1997-08-12 Aptargroup, Inc. Atomizing pump with high stroke speed enhancement and valve system therefor
US5664706A (en) * 1994-10-13 1997-09-09 Bespak Plc Apparatus for dispensing liquid in aerosol spray form
AU693834B2 (en) * 1994-02-03 1998-07-09 Bespak Plc Dispensing apparatus
EP2000219A1 (en) * 2007-06-08 2008-12-10 Gotohti.Com Inc. Vacuum release mechanism
FR2950256A1 (en) * 2009-09-21 2011-03-25 Ko Chuan Wei Double sealing degree accumulator for use between perfume bottle and product delivering head of perfume distributor, has elevated part forcedly displaced for displacing stop ball in removal direction of stop flange
CN116539818A (en) * 2023-06-27 2023-08-04 云南碧翔物联网科技有限公司 Odor concentration detection system and method

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2668958B1 (en) * 1990-11-13 1994-05-20 Valois DEVICE FOR SPRAYING OR DISPENSING FLUID PRODUCT, WITH SUCTION OF THE PRODUCT CONTAINED IN THE OUTPUT CHANNEL AT THE END OF OPERATION.
DE4110304A1 (en) * 1991-03-28 1992-10-01 Pfeiffer Erich Gmbh & Co Kg Discharge mechanism with several interengaging components - which consists of injection moulded parts on each other
US5310089A (en) * 1993-03-22 1994-05-10 Hudgins Richard G Liquid dispensing system
US5388766A (en) * 1993-09-22 1995-02-14 The Procter & Gamble Company High pressure atomization systems for high viscosity products
US5687878A (en) * 1994-04-15 1997-11-18 Owens-Brockway Plastic Products Inc. Flexible tube with pump dispenser and method of making
US5988443A (en) * 1994-04-15 1999-11-23 Owens-Brockway Plastic Products Inc. Flexible tube with pump dispenser and method of making
US5800770A (en) * 1994-04-15 1998-09-01 Owens-Brockway Plastic Products Inc. Method of making a flexible tube
US6050457A (en) * 1995-12-06 2000-04-18 The Procter & Gamble Company High pressure manually-actuated spray pump
US5850948A (en) * 1996-09-13 1998-12-22 Valois S.A. Finger-operable pump with piston biasing post
DE19749514A1 (en) 1997-11-08 1999-05-12 Pfeiffer Erich Gmbh & Co Kg Delivery of a mixture of media for e.g. pharmaceutical products
US6358237B1 (en) 1999-01-19 2002-03-19 Assistive Technology Products, Inc. Methods and apparatus for delivering fluids to a patient
KR100995652B1 (en) * 2003-08-28 2010-11-22 주식회사 종우실업 Low profile, fine mist, finger-operated, precompression-type spray pump
CN103169381B (en) * 2008-05-28 2015-05-27 雀巢产品技术援助有限公司 Pump for liquid beverage preparation devices
MA33998B1 (en) * 2010-02-24 2013-02-01 Colgate Palmolive Co DISPENSER COVER INCLUDING SELECTIVE RESERVOIRS
JP6673696B2 (en) 2012-09-28 2020-03-25 クライン，エリス Glycosidase regimen for the treatment of infectious diseases
JP2016505043A (en) 2013-01-18 2016-02-18 クライン，エリス Selective glycosidase regimens for immune programming and cancer treatment
EP2939750A1 (en) * 2014-04-29 2015-11-04 The Procter and Gamble Company Oscillating dispenser pump
US11035429B2 (en) 2018-01-03 2021-06-15 Silgan Dispensing Systems Corporation Compression spring assembly and methods of using the same
US10473176B2 (en) 2018-01-03 2019-11-12 Silgan Dispensing Systems Corporation Compression spring assembly and methods of using the same
US10794445B2 (en) 2018-01-03 2020-10-06 Silgan Dispensing Systems Corporation Dispensing pump with polymer compression spring assembly
US10870123B2 (en) 2018-01-03 2020-12-22 Silgan Dispensing Systems Corporation Dispensing pump with locking structures and methods of using the same
US10138971B1 (en) * 2018-01-03 2018-11-27 Silgan Dispensing Systems Corporation Dispensing pump with polymer compression spring assemby
US11236794B2 (en) 2018-01-03 2022-02-01 Silgan Dispensing Systems Corporation Dispensing pump with polymer spring, base venting and flow baffle
US11312613B2 (en) 2018-09-27 2022-04-26 Silgan Dispensing Systems Corporation Dispensing tap and methods for using the same
US10526191B1 (en) 2018-09-27 2020-01-07 Silgan Dispensing Systems Corporation Dispensing tap and methods for using the same
CN113786672B (en) * 2021-09-28 2022-11-29 尚潇瑛 Groundwater resource recycling device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2749644A1 (en) * 1977-05-20 1978-11-30 Coster Tecnologie Speciali Spa ATOMIZER HEAD WITH CYLINDER PISTON ARRANGEMENT FOR CONTAINERS FOR AERSOSOLS OR OTHER LIQUIDS
DE2732888A1 (en) * 1977-07-21 1979-02-01 Zeller Plastik Koehn Graebner Manual piston pump for atomiser - has spring loaded tubular valve with inlet in hollow piston of cylinder with outlet valve seat
EP0014754A1 (en) * 1979-02-17 1980-09-03 Calmar-Albert GmbH Spray pump

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1473290A (en) * 1975-03-28 1977-05-11 Step Soc Tech Pulverisation Liquid atomisers
US4089442A (en) * 1976-09-30 1978-05-16 Ethyl Corporation Accumulative pressure pump
US4230242A (en) * 1979-03-26 1980-10-28 Philip Meshberg Triple seal valve member for an atomizing pump dispenser
AU540119B2 (en) * 1979-03-27 1984-11-01 Yoshino Kogyosho Co., Ltd. Manual atomizer
WO1982004203A1 (en) * 1981-06-04 1982-12-09 Kalat Edwin F Pressurized container with dispensing pump
US4821928A (en) * 1987-09-25 1989-04-18 Su Cheng Y Moveable valve structure for perfume atomizers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2749644A1 (en) * 1977-05-20 1978-11-30 Coster Tecnologie Speciali Spa ATOMIZER HEAD WITH CYLINDER PISTON ARRANGEMENT FOR CONTAINERS FOR AERSOSOLS OR OTHER LIQUIDS
DE2732888A1 (en) * 1977-07-21 1979-02-01 Zeller Plastik Koehn Graebner Manual piston pump for atomiser - has spring loaded tubular valve with inlet in hollow piston of cylinder with outlet valve seat
EP0014754A1 (en) * 1979-02-17 1980-09-03 Calmar-Albert GmbH Spray pump

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0342651A1 (en) * 1988-05-18 1989-11-23 Societe Technique De Pulverisation Step Dosing pump
US4986453A (en) * 1989-05-15 1991-01-22 The Pittway Corporation Atomizing pump
DE3929064A1 (en) * 1989-06-29 1991-01-10 Henkel Kgaa Atomiser head for spraying liq. from container - has pump which is actuated by depressing container cap
EP0430431A2 (en) * 1989-11-27 1991-06-05 Specialty Packaging Licensing Company, Inc. Atomizing fluid dispenser
EP0430431A3 (en) * 1989-11-27 1992-01-08 Rjs Industries, Inc. Atomizing fluid dispenser
US5443185A (en) * 1990-11-09 1995-08-22 Ing. Erich Pfeiffer Gmbh & Co. K.G. Dispenser for media
US5284276A (en) * 1992-10-21 1994-02-08 Bespak Plc Pump dispenser with combined inlet and outlet ports
GB2286230B (en) * 1994-02-03 1997-07-30 Bespak Plc Dispensing apparatus
GB2286230A (en) * 1994-02-03 1995-08-09 Bespak Plc Dispensing apparatus
AU693834B2 (en) * 1994-02-03 1998-07-09 Bespak Plc Dispensing apparatus
US5664706A (en) * 1994-10-13 1997-09-09 Bespak Plc Apparatus for dispensing liquid in aerosol spray form
US5655688A (en) * 1994-10-19 1997-08-12 Aptargroup, Inc. Atomizing pump with high stroke speed enhancement and valve system therefor
EP2000219A1 (en) * 2007-06-08 2008-12-10 Gotohti.Com Inc. Vacuum release mechanism
US8056772B2 (en) 2007-06-08 2011-11-15 Gotohti.Com Inc. Vacuum release mechanism
FR2950256A1 (en) * 2009-09-21 2011-03-25 Ko Chuan Wei Double sealing degree accumulator for use between perfume bottle and product delivering head of perfume distributor, has elevated part forcedly displaced for displacing stop ball in removal direction of stop flange
CN116539818A (en) * 2023-06-27 2023-08-04 云南碧翔物联网科技有限公司 Odor concentration detection system and method
CN116539818B (en) * 2023-06-27 2023-12-19 唐山市燃气集团有限公司 Odor concentration detection system and method

Also Published As

Publication number Publication date
ATE77594T1 (en) 1992-07-15
EP0289855B1 (en) 1992-06-24
DE3715301A1 (en) 1988-11-24
EP0289855A3 (en) 1989-12-06
US5011046A (en) 1991-04-30
DE3872303D1 (en) 1992-07-30

Similar Documents

Publication Publication Date Title
EP0289855B1 (en) Fluid dispenser
EP0193054B1 (en) Dispensing device for flowable matter
EP0199142B1 (en) Manual spray distributor
DE2001921A1 (en) Reciprocating liquid dispensing pump
DE2615986A1 (en) BUILT-IN HYDRAULIC SERVO DEVICE
DE1653419A1 (en) Liquid dispensing pump
DE3105371A1 (en) LIQUID DISPENSER
EP0213476B1 (en) Dispensing device for flowing materials
DE1653651A1 (en) Piston pump for spraying liquids or flowable pastes
EP0199143A1 (en) Push plunger pump for dispensing fluid media
DE3425478A1 (en) LIQUID SPRAYER
EP0505974B1 (en) Dispenser for fluids
DE6609763U (en) LIQUID DISPENSING PUMP.
EP0184686A1 (en) Piston pump for an active-substance dispenser
DE2223471B2 (en) VALVE FOR USE IN A CANISTER, ESPECIALLY IN AN AEROSOL CANISTER
EP0289854B1 (en) Fluid dispenser
EP0443192B1 (en) Discharge head for fluids
EP0484835B1 (en) Dispensing device for fluids
EP0286925B1 (en) Device for delivery of liquids
EP0484773A1 (en) Dispensing device for fluids
EP0388651B1 (en) Device for discharging a fluid
EP2330005B1 (en) Hydraulic cylinder
EP0370257A2 (en) Valve, especially for manual discharge devices
EP0126874B1 (en) Air pressure cylinder, especially a vehicle air pressure brake cylinder
DE60223671T2 (en) DOSING

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI NL SE

RHK1 Main classification (correction)

Ipc: B65D 47/34

17P Request for examination filed

Effective date: 19900206

17Q First examination report despatched

Effective date: 19901112

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 77594

Country of ref document: AT

Date of ref document: 19920715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3872303

Country of ref document: DE

Date of ref document: 19920730

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ITF It: translation for a ep patent filed

Owner name: MODIANO & ASSOCIATI S.R

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 88106258.2

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20020419

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20030328

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20030416

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030420

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20030425

Year of fee payment: 16

Ref country code: CH

Payment date: 20030425

Year of fee payment: 16

Ref country code: BE

Payment date: 20030425

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040420

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040421

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20040421

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040430

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040430

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20040526

Year of fee payment: 17

BERE Be: lapsed

Owner name: ERICH *PFEIFFER G.M.B.H. & CO. K.G.

Effective date: 20040430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041101

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20040420

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20041101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050420

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051230

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20051230