Abstract:
The outlet ( 12 ) of a dispenser reservoir ( 8 ) is sealingly closed by a transverse catch member ( 21 ) which also positively prevents the dispenser ( 1 ) from being actuated. Pulling out the catch member ( 21 ) opens the reservoir ( 8 ) and releases the discharge actuator ( 37 ). Thus the piston ( 14 ) opposing the reservoir outlet ( 12 ) can enter. The materials of the reservoir ( 8 ) and reservoir seal ( 30 ) are paired in glass, tetrafluoroethylene or the like. Thus even sensitive media may be stored in the dispenser ( 1 ) over lengthy periods without risking any change in the substances.

Description:
TECHNICAL FIELD AND BACKGROUND OF THE INVENTION 
     The invention relates to a dispenser for media. These are particularly liquid, but may also be or contain a paste, a powder, a gas or the like. Thus the media are flowable or trickling or non-flowable. The dispenser is held and actuated single-handedly. All or almost all components, particularly the exposed components, are injection-molded or made from plastics. 
     The dispenser may resuck medium from a reservoir during a working or stroke cycle or may contain, in a separate reservoir chamber, serval premeasured doses of the medium to be discharged in sequence. Preferably the dispenser is made for a single unidirectional stroke or medium discharge and then emptied. To prevent aging, chemical change or contamination of the medium the reservoir chamber is closed, not only tightly against the presence of germicides but also the medium is maintained in contact with only materials which avoid either chemical reactions with the medium or a physical change by contact with the medium. This is difficult to achieve with usual thermoplastic or other plastics materials such as polythene or with elastomers such as rubber, chlorinated or bromobutyl rubber. 
     The dispenser may be accidentally actuated by external forces when prevented from actuation merely by friction, e.g. by a catch. This applies irrespective of whether the reservoir chamber is closed or not by a stopper or the like such as pump piston which is primarily separate from a piston rod and then connected thereto. Even positive prevention of actuation may be accidentally released e.g. by mutual rotary motion of the two dispenser units. 
     OBJECTS OF THE INVENTION 
     An object of the invention is to provide a dispenser avoiding the disadvantages of prior art designs or of the kind as described above. A further object is to ensure reliable enclosure of the medium during its shelflife by closing off the reservoir chamber or by preventing accidental actuation. Another object is to alert a user concerning any prior use or operation of the dispenser. Still a further object is to achieve simple design and ease of use. 
     SUMMARY OF THE INVENTION 
     According to the invention locking means are provided which either maintain the reservoir chamber sealingly closed or prevent any relative motion thereof in a discharge mode. A movement for releasing the lock is expediently provided. In the vicinity of the locking or sealing face releasing lock motion is linear or parallel to the plane of the reservoir outlet. It may also be an arc or pivot motion. The securing or locking member can remain connected to the dispenser in its released position or can be totally removable to thus clearly signal prior use of the dispenser. 
     The locking member is also suitable to fixedly lock the medium reservoir to one of the dispenser units. Thus these components form a preassembled module which is then assembled to the other dispenser unit by an axial or linear motion. The locking member may be released solely by being pulled, but also by being pushed. Pushing may release a catch securing the locking member against release motions or may render a handle accessible which is initially not accessible. Thereafter, the locking member may be fully released by gripping the handle. 
     The reservoir may be firmly seated or movable on the corresponding unit and may be moved relative to this unit during insertion and release of the locking member or during discharge actuation. 
     The locking member is tensioned directly relative to the reservoir by two opposing or remote strain faces. One of these strain faces may engage the reservoir only indirectly, namely via a spacer. The strain faces then act on separate bodies which are mutually movable both in the release direction and in the tensioning direction oriented transverse thereto for straining the one relative to the other. If the strain faces are fixedly interconnected with respect to the release or tensioning direction, the spacer may be omitted and their support may be provided directly by the housing of the associated dispenser unit and by the reservoir. 
     The locking member is located between the reservoir outlet and the pump piston or piston rod. The piston may also be provided within the reservoir chamber as an additional closure plug which seals by radial pressure and thus not like the locking member by axial pressure. Particularly when the locking member is provided only for locking manual actuation its locking position may also be secured with respect to the associated unit by a snap connector or a nominal rupture connection. Then the locking member can be translated into the release position solely by untieing or breaking this connection on commencement of the motion of the discharge actuator. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     Example embodiments of the invention are explained in more detail in the following and illustrated in the drawings in which: 
     FIG. 1 is an axial section through a dispenser of the invention, 
     FIG. 2 is a partial length section through a detail of FIG. 1, 
     FIG. 3 is a cross-section of FIG. 1, 
     FIG. 4 is a further embodiment in a view according to FIG. 2, 
     FIGS.  5 + 6  are further embodiments in views according to FIG. 1, 
     FIG. 7 is an enlarged axial section through FIG. 6, and 
     FIG. 8 is a plan view of FIG. 7 on the scale of FIG.  6 . 
    
    
     DETAILED DESCRIPTION 
     In FIGS. 1 and 5 the dispenser  1  is in its initial or rest position, namely in its state of longest extension and simultaneously in its positively locked state. The dispenser has first and second dispenser main units  2 ,  3  with base bodies  5 ,  6  and an intermediate unit  4  with a base body  7  located permanently totally within units  2 ,  3 . As shown in FIG. 1 units  2 ,  3  form the outermost, freely exposed faces of the dispenser  1 , while being rotatable and axially movable relative to each other. Unit  4  is locked with respect to unit  3  in the rotational direction, axially and radially without motion play. Thus units  3 ,  4  are movable relative to unit  2  in the cited directions. This also applies to a one-part reservoir  8  which in the locked state and with respect to units  2  to  4  is centered axially positively and radially with little motion play while being non-positively but fixedly connected as to rotational forces. Reservoir  8  has over its entire length a reservoir chamber  9  also being a pressure or pump chamber which provides over its full length a cylinder slide face for a pump, such as a thrust piston pump. All of the cited components are located in a common dispenser axis  10 , to which they may be configured axially or rotationally symmetrical. Also the environmentally porting medium outlet  11  or the reservoir outlet  12  and an outlet duct  13  valvelessly connecting outlets  11 ,  12  is located parallel to or coaxial with axis  10 . Outlet  12  and duct  13  provide an outlet path for the medium. 
     The pump comprises a piston  14  having at least two and maximally four serially coaxial and acutely flanked piston lips. These lips can slide with sealing pressure and be linearly in contact with the inner circumference of chamber  9 , but are located contact-free outside of chamber  9  in FIG.  1 . Piston  14  is provided on the end of rod-shaped plunger ram  15  made in one part with piston  14 . Piston rod  15  extends from piston  14  up to the inner end of a nozzle duct forming outlet  11  and bounds duct  13  up to this nozzle duct in one part. At the inner end of the nozzle duct a flow chamber may be provided for generating a flow transverse to axis  10 . This can be a mixing, swirl or twisting chamber which causes a medium swirl about axis  10  with which the medium then emerges finestly atomized from outlet  11 . Outlet  11  may also be designed to release the medium dose as a non-atomized jet or as a single droplet. The inner end of duct  13  traverses the end face of piston  14 . 
     Reservoir  8  is made of glass or a material having comparable properties such as a plastics material. Its cylindrical jacket  16  adjoins in one part the entirely closed bottom  17  and a flange  18  annularly protruding beyond its outer circumference. The free end face of flange  18  forms an annular boundary edge  19  spaced from and located between the inner and outer circumferences of jacket  16  or of flange  18 . Boundary edge  19  is perpendicularly or obtusely flanked, sharp and protrudes axially the most to provide the boundary of outlet  12 . 
     Together with body  7  the reservoir  8  is fixed as described relative to body  6  by a securing or preventing means  20  which seal chamber  9  hermetically from the exterior. Lock  20  positively prevents axial actuation of dispenser  1  or ingress of parts  14 ,  15  into chamber  9 . For this an oblong locking or securing member  21  is radially inserted between parts  14 ,  15  and parts  8 ,  18  only into bodies  6 ,  7 . Thus member  21  is located between piston  14  and the free end face of flange  18 . On discharge the medium flows axially in direction  22  through the dispenser  1  from chamber  9  directly through piston  14 , rod  15  and outlet  11  away from unit  2 . This requires to displace unit  3  relative to unit  2  in the opposite direction  23 . To release the lock  20  member  21  needs to be entirely pulled out of the dispenser  1  at right-angles relative to axis  10  in direction  24 . In the opposite direction  25  member  21  is inserted as shown in FIG. 1 for transferred into the locking position. Member  21  may be symmetrical to an axial plane  26  of axis  10 , but is asymmetrical relative to the axial plane at right-angles thereto. Thus member  21  is insertable into the dispenser  1  from one side only or by a single leading end while being removable only to this side. 
     The one-part base body  5  has a cylindrical shell  27 , a planar bottom  28  at the rearmost shell end and an axial projecture  29  which freely protrudes from the bottom&#39;s inside with radial spacing from shell  27  and less far than shell  27 . This cruciform mandrel  29  extends up to bottom  17  and has roughly the same outer width as jacket  16 . Between reservoir  8  with mandrel  29  and unit  14 ,  15  a plate-type seal  30  is located. The planar, slightly resiliently compressible sealing face  31  is supported axially pre-stressed on boundary edge  19  where it exhibits its maximal sealing pressure. The closure and securing body  30  is fixedly connected to dimensionally rigid part  21 , is made of tetrafluoroethylene or a material having similar sealing and sliding properties and is fully fillingly inserted in a recess of member  21 . The securing and sliding face  31  thus connects gap- and stepfree or contionuously in direction  24  or  25  to an outermost face of member  21  which face forms a continuation of face  31 . The inner circumference of the recess may fully envelope the outer circumference of seal  30 . The recess may also be a transverse groove which like seal  30  extends up to the outermost side flanks of member  21 . Seal  30  may be inserted as a separate part into the recess with radial pressure. Seal  30  may also be fixedly connected to the material of member  21  by molding. Seal  30  may also be coated or compounded on member  21 . 
     The one-part base body  6  has a shell  32  freely protruding counter shell  27  and only in direction  23  from an annular end wall  33 . Body  6  also has a stud  34  freely protruding in the opposite direction  22 . The free end wall of stud  34  is traversed by outlet  11  and bounds the nozzle duct in one part. The end face of rod  15  supports against the inside of this end wall. The smallest width of the nozzle duct or of outlet  11  is maximally one or half a millimeter. Stud  34  has an outermost shell  35  protruding only in direction  22  from planar wall  33 . Shell  35  is acutely or conically tapered over its entire length. This constriction is continuous in connection to wall  33  and progressive in the transition to the end face traversed by outlet  11 . Radially spaced from and within shell  35  the stud  34  has an inner shell  36  adjoining the end wall of stud  34  in one part and protruding in direction  23  freely beyond the inside of wall  33 . Unit  14 ,  15  is inserted into this inner end in direction  22 . Thus the outer circumference of rod  15  supports against the inner circumference of shell  36  with radial pressure and piston  14  is axially slightly spaced from the inner end of shell  36 . The outer width of the piston  14  is slightly larger than that of shell  36 . The outer circumference of shell  32  is slidingly in close contact with the inner circumference of shell  27 . Shell  27  may define the radially largest extension of the dispenser  1  and may almost entirely accommodate shell  32 . 
     Units  2 ,  3  form a manual discharge actuator  37  including two remote pressure handles  38 ,  39  which are located at the rearmost end of the dispenser  1  respective of stud  34 . Handle  38  is formed by the outside of end wall  28 . Annular handle  39  surrounds stud  34  or protrudes only at two remote sides of stud  34  while being formed by the outside of the wall  33 . Wall  33  protrudes only beyond the outer circumference of shell  35  or the inner circumference of shell  32 . 
     A guide  40  receives locking member  21  and is provided in shell  32  and body  7 . Guide  40  envelopes member  21  in section as shown in FIG. 2 over the complete circumference closely or so sealingly that no dirt is able to ingress from without into the housing formed by bodies  5   6 . This housing is formed by the two cap bodies  27 ,  28  and  32 ,  33  and accommodates body  7  fully as well as the majority of the member  21  fully enveloped. The one-part body  7  has a widest shell  41  freely protruding in direction  22 , a less wider and longer shell  42  adjoining shell  41  in direction  23  and an end wall  43  interconnecting shells  41 ,  42 . The outside of wall  43  may be supported with respect to the outer circumference of shell  42  by circumferentially distributed ribs. An annular support member  44  or a bead protrudes slightly beyond the inside of wall  43 , forms a continuation of shell  42  and positively supports reservoir  8  on the transition shoulder between shell  16  and flange  18 . Projecture  41  slides with its outer circumference on the inner circumference of shell  32 , is axially spaced (FIG. 1) from a stop formed by the inner face of wall  33 , surrounds piston  14 , and is radially spaced from reservoir  8 , from flange  18  as well as from seal  30 . Projecture  42  surrounds shell  16  with a minor or zero radial clearance only over part of the reservoir length, protrudes in direction  23  less far than shell  32  and is radially entirely spaced from shells  27 ,  32 . Thus body  7  is permanently totally located within cap  32 ,  33  of body  6 . As compared to this reservoir  8  freely protrudes in direction  23  beyond bodies  6 ,  7  into body  5  by its bottom end which juts from shell  42  and extends up to the end face of mandrel  29 . 
     Reservoir  8 , which like bodies  5  to  7  is dimensionally rigid, is axially stressed directly relative to body  7  with member  21  and is secured relative to body  6  without motion play. The stressing forces act thereby only on the remote end faces of flange  18 . In cross-section perpendicular to directions  24 ,  25  member  21  has an acutely bevelled plate  45  with a planar wedge face which faces outlet  12  while being oriented at right-angles to axis  10  and located in the plane of face  31 . The remote planar pitch or wedge face  47  approaches in direction  25  the first-mentioned wedge face at an acute angle of a few degrees. The middle part  45  adjoins on both sides legs  46  to provide a U-profile. Legs  46  protrude only in direction  22  and continuously cover the majority of the length of member  21 . Legs  46  have edge faces oriented over their length parallel to direction  24  or  25  and thus having a height increasing in direction  25 . Legs  46  stiffen member  21  and plate  45 . Guide  40  has breakthroughs or openings  51 ,  52  in two limited circumferential and opposite sections of shell  32 . Guide  40  has also openings or breakthroughs  53 ,  54  in corresponding sections of shell  41 . Openings  51  to  54  are aligned. The bounds of the openings are closely adapted to the outer contour of member  21  and are thus also U-shaped. Thus each opening has a shape or size differing from those of all remaining openings. 
     When positioned member  21  is positively locked against motions in direction  24  or  25  by a lock  50  without motion play relative to bodies  6 ,  7 . To prevent motions in release direction  24  member  21  has at one end a locking or snap member  49 , namely a cam protruding beyond the locking face  47 . Cam  49  is spaced from and located between legs  46 . In locking position this cam supports between legs  46  on an outer face of shell  32  which is remote from the inner circumference. To prevent motions in direction  25  member  21  has at its other end a stop or handle  55  which supports opposite to cam  49  on a corresponding circumferential face of shell  32 . The largest distance of the plate or cup member  49  or  55  from axis  10  may be maximally as large as the corresponding maximal distance of body  5  or shell  27  so that the protruding parts do not hinder. Members  49 ,  55  may be curved about axis  10  (FIG.  3 ). Members  45 ,  46 ,  49 ,  55  are in one part. Webs  46  adjoin handle  55 . 
     Piston  14  juts between stiffeners  46  and is directly juxtaposed with face  47 . A counterface  48  for face  47  is a corresponding wedge or sliding face on body  7 . Face  48  is formed by those sections of openings  53 ,  54  which are nearest to outlet  11 . Thus member  21  not only prevents mutual motion of parts  6 ,  7 ,  14 ,  15 , but can also positively limit the mutual axial stroke of parts  5  to  8  and  14 , namely by abutting mandrel  29  or the free end of shell  27  on member  21  when member  55  is in the motion path of this free end. Opening  51  may receive that section of member  21  without axial motion play, which directly connects to member  55 . Opening  51  thus receives this section self-lockingly and firmly seated like a shallow wedge key. 
     To release the dispenser lock  20  the dispenser is manually gripped between handle  55  and shell  32  and member  21  is entirely pulled out of the dispenser  1  in direction  24 . Thereby face  31  and then the adjoining face of member  21  slides along the boundry edge  19  of the free end face of flange  18 . Thus, on commencement of this motion the axial pressure of face  31  is loosened or eliminated to thus release the catch  50 . Then, by manually mutually approaching handles  38 ,  39  the pumping stroke may be implemented. Thereby, mandrel  29  drives reservoir  8  together with or independent from body  7  in direction  22  relative to unit  3 . Thus, piston parts  14 ,  15  enter the conically flared outlet  12  to again seal it tightly except for duct  13 . In the further stroke course the medium stored in chamber  9  is pressurized and discharged through duct  13  from outlet  11  where the medium detaches from the dispenser  1 . Piston  14  thereby reaches bottom  17 . If the body  7  is thereby codriven, the free end of its shell  41  abuts after a stroke portion on a counterstop, namely the inner face of wall  33 . When the member  21  is inserted in direction  25 , body  7  executes with body  8  an axial tensioning motion relative to body  6 . Body  6  may be preassembled with each of parts  7 ,  8 ,  14 ,  15 ,  21 ,  30  before being assembled with the one-part unit  2 . 
     Parts  7 ,  8  may also be in one part commonly. In FIG. 4 member  21  is tensioned without spacer  7  directly relative to reservoir  8  since member  21  simultaneously contacts the two remote end faces of flange  18  with axial tension. In this case legs  46  protrude beyond plate  45  only in direction  23  and have at their ends projectures directed toward plane  26 . These projectures form the wedge faces  47  which face the face  31 . Faces  47  support linearly and prestressed on counterface  48  of reservoir  8 . The obtuse conical face  48  is formed by the transition between jacket  16  and flange  18 . Face  48  is remote from the free end face of flange  18 . Seal  30  is provided on the inside of the planar connecting section  45  and extends up to the inner faces of legs  46  which may slide or be guided between boundary edge  19  and face  48  on the cylindrical outer circumference of flange  18 . Members  8 ,  21  may be preassembled before then being assembled with unit  3  or body  6 . Thus chamber  9  may be sealingly closed by member  21  directly after the medium has been filled in. On the pump stroke mandrel  29  pushes reservoir  8  beyond wall  33  between shells  35 ,  36 . Thereby reservoir  8  can enter shell  42 . 
     In FIG. 5 the connection or end wall between shells  41 ,  42  is formed by radial ribs  43  uniformly distributed about axis  10 . Between ribs  43  axial through-openings are formed which directly adjoining the opposite inner and outer circumferences of shells  41 ,  42 . The free end of shell  27  forms circumferentially distributed and axial projectures  57  which are adapted to pass the openings of the rib wall  43 . Projectures  57  are separated by breakthroughs  56  or slots. Shell  32  clasps the outer circumference of shell  27 . Thus shell  27  or body  5  may be entirely pushed into cap  32 ,  33  while permanently sliding on the outer circumference of shell  42 . After the first partial stroke projectures  57  enter the openings in end wall  43  until the bottom or end faces of slots  56  abut against wall  43  to then drive body  7  until it abuts on wall  33 . Thereby projectures  57  do not protrude beyond the free end of shell  41 . Once the protuberances  57  have entered the openings in body  7  a positive rotation prevention free of motion play is achieved between parts  5 ,  7 . Thereby projectures  57  also slide on the inner circumference of shell  41 . 
     Locking member  21  is braced directly relative to body  6  or piston unit  13 ,  14  because the free end of piston  14  forms the counter face  48  in contact with the tension face  47 . Thus, the counter member for catch member  49  may be formed by the inner circumference of shell  41  or  32 , e.g. when member  49  is located between the axis  10  and member  55 . In this case handle  55  is totally countersunk in shell  32  or in opening  51 . Handle  55  does not protrude beyond the outer circumference of shell  32 . At the other end member  21  has a pressure member  58  which similar to handle  55  is widened with respect to the intermediate section  45 ,  46 . Button  58  is likewise entirely countersunk in shell  32  or in opening  52 . 
     Members  55 ,  58  form a smooth continuation of the outer circumference of shell  32 . To release member  21  the button  58  first needs to be pushed until member  21  is displaced sufficiently so that handle  55  protrudes far enough out of shell  32  to permit manual gripping. Member  58  could also be formed by a part separate from member  21  or could be connected thereto via a nominal rupture connection. Thus member  58  could remain on body  6  without needing to be moved inbetween reservoir  8  and piston  14  when member  21  is released. 
     Bodies  5 ,  6  may also be directly interlocked by a lock  60 . Thereof a withdrawal preventor  59  prevents bodies  5 ,  6  from being axially pulled apart in the rest position. A rotational lock  61  prevents mutual rotation of bodies  5 ,  6  in any position or until the rotational lock is effective between bodies  5 ,  7 . A corresponding lock may also be provided directly between bodies  6 ,  7 . Means  60  have cams  62  on body  5  and circumferentially distributed about axis  10 . Cams  62  protrude radially outwards from the outer circumference of shell  27  and adjoin the bottom faces of openings  56 . Counter cams  63  cooperate with cams  62  and protrude beyond the inner circumference of the shell  32  and are located at the free end thereof. Cams  62 ,  63  form a snap connector by sliding on each other with inclined ramps when assembling unit  2  with body  6 . Thereby cams  62 ,  63  radially deflect from each other under resilient deformation of bodies  5 ,  6  whereafter they snap back behind each other to positively prevent mutual withdrawal of units  2 ,  3 . Cams  62  may also be provided for the rotational lock  61  when they engage length grooves of the inner circumference of shell  32 . 
     In FIGS. 6 to  8  bodies  6 ,  7  are permanently fixedly interconnected with respect to axial or rotary motions. Thus bodies  6 ,  7  form equally long length sections of unit  3 . These sections are fixedly interconnected by lock  60 . Shell  32  juts into shell  41  and is connected thereto by snap members  62 ,  63 . Shell  41  extends up to the inside of wall  33 . Shell  32  extends up to the inside of wall  43  formed by radial ribs. In axial view wall  33  is oblong or oval and protrudes varyingly far over the entire circumference of shells  32 ,  41 . Wall  33  forms only on remote sides of stud  34  two opposing pressure faces  39  which are located in the axial plane oriented at right-angles to plane  26 . In axial view faces  39  and projection or foot  55  form a T. The length of shells  32 ,  41  is smaller than their diameter or half or a quarter thereof. Thus reservoir  8  is totally located within body  7  and does not jut into body  6  in the rest position. 
     Thus bodies  5 ,  7  and lock  20  commonly form a preassembled unit which merely requires to be connected to body  6  via lock  60 . Body  5  has a sleeve-shaped section or shell  27  fully located in body  7  and receiving reservoir  8 . Shell  16  is centered in shell  27  with radial motion play. Flange  18  has slight axial distance from end face  44  and is located outside of shell  27 . Shell  27  transits via an annular end wall  65  into a slimmer, sleeve-shaped section  67 . Section  67  is freely exposed in the rest position and protrudes out of body  7  in direction  23  by the dimension of the working stroke or by the spacing between the mutually opposing end faces of piston  14  and bottom  17 . Body  7  forms at its upstream end an annular end wall  66  protruding beyond its inner circumference. Section  67  protrudes out of wall  66 . Wall  66  positively prevents body  5  from being withdrawn from body  7  by abutting against wall  65 . Wall  65  is located between walls  17 ,  66  which contact wall  65  in the rest position. Wall  65  transfers the actuating pressure directly to bottom  17 . 
     Lock  20  axially braces wall  17  against wall  65  and wall  65  against wall  66 . Thereby also unit  14 ,  15  is tensioned against the end wall  71  of stud  34  and member  62  is tensioned against member  63 . Member  41 ,  63  may also be formed by separate, for example four, axial projectures which are interspacedly distributed about axis  10 . These projectures are symmetrical to plane  26  and bound window openings between them. Shells  18 ,  27  are slidingly guided on longitudinal edges of axial ribs which protrude in one part from the inner circumferences of shells  42  and  35 . Corresponding ribs  29  are also provided on the inner circumference of shell  67 , the bottom  28  of which forms handle  38 . 
     Member  21  or its guide  40  is provided only on body  7  and not on body  6 . Piston  14  and shell  36  protrude in direction  23  into shell  41  or  42 . Thus piston  14  protrudes beyond the remaining body  6 , namely shell  32 . The tensioning or wedge face  47  has varying pitches, namely the minimal pitch at the portion adjoining face  48  in the locked position. Face  48  is formed by a spherical cap recess on the free end face of piston  14  to which the spherical cap projection  47  is adapted. The two faces  47 ,  48  thus form a resiliently releasable snap connector of means  50 . Thus member  49  could be omitted. From engagement with face  48  the face  47  declines in both directions  24 ,  25  as well as transverse thereto down to legs  46 . 
     Duct  13  extends as a blind hole from face  48  over only a minor portion of the length of shaft  15  into shell  36  and connects at its bottom to transverse duct  68  directed against the inner circumference of shell  36 . This inner circumference and the outer circumference of shaft  15  bound axial ducts  69  laterally displaced relative to the axis  10  and duct  13 . One of the transverse ducts  68  connects to the upstream end of each of ducts  69 . The downstream ends of ducts  69  extend down to the associated end of shaft  15 . Ducts  69  may be formed by longitudinal grooves in shaft  15  and port into the swirl or vortex means  70 . The duct recesses of means  70  are only provided in the inside of end wall  71 . The cross-section of ducts  69  is significantly smaller than that of ducts  13 ,  68 . 
     The opening  72  of duct  13  which traverses face  48  is closed pressure-tightly by face  47 . Thus a manually actuatable valve is formed and contamination of outlet duct  13 ,  68 ,  69 ,  70  during the shelf-life is prevented. In FIG. 1 cam  49  protrudes partly beyond one of the plate faces, namely wedge face  47 ; in FIG. 5 cam  49  protrudes laterally beyond the outsides of the middle section of member  21 ; in FIG. 7 cam  40  protrudes only beyond the lowest part but not beyond the highest part of face  47 . In FIG. 4 snap locking could be omitted due to the self-locking effect, but here too, direct snap-locking of reservoir  8  is possible. 
     Boundary surface  19  in this case is planar throughout from outlet  12  up to the outer circumference of reservoir  8 . Member  21  has a recess which is bounded about its entire circumference and receives seal  30 . Thus on both sides of plane  26  the narrow legs  46  and on both sides of the associated perpendicular axial plane the projectures  55 ,  58  are formed. As a plate or button handle  55  juts from wall  33  and shell  41  by a degree which amounts to maximally half the coparallel and narrower extension of wall  33 . Thus handle  55  is spaced from the outer circumference of bodies  5  to  7 . Parts  8 ,  30  could also be commonly made of the same material or in one part. 
     Guide  40  or its openings  51 ,  52  are exclusively provided in shell  42 . For assembling, reservoir  8  may be first inserted into body  5  in direction  23  and then codirectionally inserted together therewith into body  7 . After this, member  21  is inserted in direction  25 . The resulting assembly unit may then be attached to body  6  in direction  23 , whereby firstly faces  47 ,  48  come into mutual engagement and the axial preventing pressure is built up. It is also possible that only bodies  5 ,  7 ,  8  are attached to body  6  as a preassembled unit, after which member  21  is inserted. The opening motion of member  21  may also be a rotary motion about axis  10  respective about an eccentric axis or a motion transverse to plane  26 . Furthermore, the seal may contact the inner circumference of outlet  12  exclusively or in addition thereto with radial pressure to thus form the snap connector locking member  21 . Seal  30  or face  31  may contain germicidal substances, admixed in the material thereof. 
     The described functions are given irrespective of the rotational position of reservoir  8  relative to bodies  5  to  7 ,  21 . Since reservoir  8  is slidingly guided via body  7  on body  6  or directly on body  6 , highly reliable functioning is assured during actuation. It will be appreciated that all features of all embodiments are interchangeable or supplementary to each other. The cited properties and effects may be provided precisely as described, or merely substantially or approximately so and may also greatly deviate therefrom depending on the particular requirements.