Patent Abstract:
Provided is a foam dispenser in which upward and downward displacement of an actuator causes a content liquid within a liquid cylinder and air within an air cylinder to be mixed and foamed, such that the foam so generated is dispensed from an outlet of a dispenser head. The dispenser head has a structure with a minimized thickness to thereby increase the dispensing amount. The dispenser head includes two members, i.e., a first member and a second member, that have special configuration for allowing the two members to be easily removed from a die and formed in a small thickness.

Full Description:
TECHNICAL FIELD 
       [0001]    The present invention relates to a foam dispenser. 
       BACKGROUND ART 
       [0002]    Various types of foam dispensers have been proposed which includes a cylinder member suspended in a container body, the cylinder member having an upper large-diameter cylinder and a lower small-diameter cylinder. An upwardly-urged actuator is provided to project from the cylinder member, and a foaming member is fitted into the actuator. In this instance, depression of the actuator causes a content liquid within the small-diameter cylinder and air inside the large-diameter cylinder to pass through the foaming member so as to be foamed and discharged from a nozzle. (Refer to Patent Literature 1, for example.) 
         [0003]    Manufacturing of such a conventional foam dispenser requires first of all a simple die structure for molding, and therefore, it has been a conventional practice that a dispenser head constituting an upper end of the actuator is formed as a single part with a large thickness. 
       CITATION LIST 
     Patent Literature 
       [0004]    PTL 1: JPH08230961A 
       SUMMARY OF THE INVENTION 
     Technical Problems 
       [0005]    Due to the above reason, the conventional foam dispenser suffers from a problem that the liquid passage and other elements are restricted in size, and a large outlet cannot be achieved without significantly enlarging the dispenser head itself and thereby increasing the manufacturing cost. 
         [0006]    The present invention has been conceived in view of these problems and aims to provide a foam dispenser which makes it possible to realize a dispenser head structure with a minimum thickness to thereby increase the dispensing amount. 
       Solution to Problems 
       [0007]    A first aspect of the present invention resides in a foam dispenser, comprising: a cylinder member B that includes: an upper end portion adapted to be secured to a placing cap A fitted over an outer circumference of a neck  101  of a container body  100  so that the cylinder member B is suspended in the container body  100 ; a large-diameter air cylinder  20 ; and a small-diameter liquid cylinder  21  provided concentrically with and below the large-diameter air cylinder  20 ; and an actuator C that includes: a stem  30 ; a liquid piston  35  protruding from a lower portion of a circumference of the stem  30  and adapted to slide in the liquid cylinder  21 ; an air piston  40  linked to the outer circumference of the stem  30  and adapted to slide in the air cylinder  20 ; and a dispenser head  50  fitted over an upper end of the stem  30 , the actuator C being urged upward and adapted to be displaceable upward and downward such that the upward and the downward displacement of the actuator C causes a liquid within the liquid cylinder  21  and air within the air cylinder  20  to be mixed and foamed to be dispensed as a foam from an outlet of the dispenser head  50 ; wherein the dispenser head  50  comprises two members in the form of a first member  50   a  and a second member  50   b,  the first member  50   a  including: a top plate  51 ; a longitudinal tube  52  suspending from a middle portion of a back surface of the top plate  51  and including a lower portion fitted around an outer circumference of an upper portion of the stem  30 ; and a nozzle  53  provided on the longitudinal tube  52  to protrude forward, the nozzle  53  including an open base end whose top portion in part constitutes the top plate  51 , and the second member  50   b  including: a ring-shaped top plate portion  60 ; a vertical wall portion  61  suspending from an outer circumference of the top plate portion  60 ; a circumferential wall portion  62  suspending from an inner circumference of the top plate portion  60 ; a first fitting recess  63  provided in a front portion of the top wall portion  60  and the vertical wall portion  61 ; and a second fitting recess  64  provided along the inner circumference of the top plate portion  60  that is in contiguity with the first fitting recess  63 , the first and the second member  50   a  and  50   b  being integrated by fitting the base end of the nozzle  53  to the first fitting recess  63  and fitting an outer circumference of the top plate  51  to the second fitting recess  64 . 
         [0008]    A second aspect of the present invention resides in the foam dispenser according to the first aspect, wherein a fitting hole  65  is provided in each of a bottom wall portion of the first fitting recess  63  and a bottom wall portion of the second fitting recess  64 , and a hook  55  is provided to protrude from each of a lower surface of the nozzle  53  and a lower surface of the top plate  51  in correspondence with the fitting holes  65  so as to be hooked into the fitting holes  65 , the fitting holes  65  and the hooks  55  together forming an engagement member. 
         [0009]    A third aspect of the present invention resides in the foam dispenser of one of the first and the second aspect, wherein the second fitting recess  64  of the second member  50   b  is further recessed to form an annular drain recess  67  provided with a drain hole  68 . 
         [0010]    A fourth aspect of the present invention resides in the foam dispenser according to the third aspect, wherein the dispenser head  50  has a top surface constituted by the first and the second member  50   a  and  50   b,  the top surface being inclined downward from a front to a rear of the dispenser head  50 , and the nozzle  53  and the bottom wall portion of the first fitting recess  63  and the bottom wall portion of the second fitting recess  64  are inclined downward from the front to the rear. 
         [0011]    A fifth aspect of the present invention resides in the foam dispenser of any one of the first to fourth aspect, wherein a support plate  56  is provided to extend across an upper portion of the circumferential wall portion  62 . 
       Advantageous Effects of Invention 
       [0012]    According to the present invention, since the dispenser head  50  includes the two members, i.e., the first and the second member  50   a  and  50   b,  which include the abovementioned unique structure, thicknesses of the first and the second member  50   a  and  50   b  are advantageously minimized, and the outlet and the dispenser passage can be enlarged while the conventional overall structure is maintained. Furthermore, the minimized thicknesses result in a reduced amount of material used, and moreover, the minimized thicknesses offer a manufacturing advantage that assembly of the first member and the second member  50   a  and  50   b  is significantly facilitated due to the structures thereof. 
         [0013]    When the fitting hole  65  is provided in each of the bottom wall portion of the first fitting recess  63  and the bottom wall portion of the second fitting recess  64 , and the hook  55  is provided to protrude from each of the lower surface of the nozzle  53  and the lower surface of the top plate  51  in correspondence with the fitting holes  65  so as to be hooked into the fitting holes  65 , the fitting holes  65  and the hooks  55  together forming an engagement member, it is ensured that the first and the second member  50   a  and  50   b  are easily engaged. 
         [0014]    When the second fitting recess  64  of the second member  50   b  is further recessed to form the annular drain recess  67  provided with the drain hole  68 , even when water is permeated from where the two members constituting the dispenser head  50  are engaged, the permeated water can be discharged outside of the circumferential wall portion  62  from the drain hole  68 . As a result, inconvenience, such as permeation of the water into the air cylinder  20  through the longitudinal tube  52 , is prevented, for example. 
         [0015]    When the dispenser head  50  has the top surface constituted by the first and the second member  50   a  and  50   b,  the top surface being inclined downward from the front to the rear of the dispenser head  50 , and the nozzle  53  and the bottom wall portion of the first fitting recess  63  and the bottom wall portion of the second fitting recess  64  are inclined downward from the front to the rear, even when the water around the top surface of the dispenser head  50  is permeated from where an outer circumference of the top plate  51  and an inner circumference of the top plate portion  60  are joined, the water can flow rearward through the drain recess  67  to be smoothly discharged outside from the drain hole  68  at rear of the drain recess  67 . 
         [0016]    When the support plate  56  is provided to extend across the upper portion of the circumferential wall portion  62 , stiffness of the dispenser head  50  formed in the minimized thickness is further increased, which further ensures that the risk of deformation and the like is prevented. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0017]    The present invention will be further described below with reference to the accompanying drawings, wherein: 
           [0018]      FIG. 1  is a longitudinal sectional view showing a foam dispenser according to a first embodiment; 
           [0019]      FIG. 2  is a plan view showing a dispenser head of the foam dispenser of the first embodiment; 
           [0020]      FIG. 3  is a cross-sectional view showing a longitudinal tubular portion of a first member of the first embodiment; 
           [0021]      FIG. 4  is longitudinal sectional view showing part of the foam dispenser taken along a line x-x shown in  FIG. 3  of the first embodiment; 
           [0022]      FIG. 5  is a cross-sectional view showing the longitudinal tubular portion of the first member according to a second embodiment; 
           [0023]      FIG. 6  is a longitudinal sectional view showing the foam dispenser according to a third embodiment; 
           [0024]      FIG. 7  is a longitudinal sectional view showing the foam dispenser of the third embodiment; and 
           [0025]      FIG. 8  is a plan view showing the dispenser head of the foam dispenser of the third embodiment. 
       
    
    
     DESCRIPTION OF EMBODIMENTS 
       [0026]    Embodiments of the present invention are described below with reference to the drawings. 
         [0027]      FIGS. 1 and 2  show an example of a foam dispenser  1  including a placing cap A, a cylinder member B, an actuator C, a poppet valve body D, and a spacer E. 
         [0028]    The placing cap A is used to fasten the foam dispenser  1  to a container body  100 . The placing cap A includes a circumferential wall  10  having an upper edge fitted to an outer circumference of a neck  101  of the container body  100 , a top wall  11  extending from the upper edge of the circumferential wall  10  and provided in a middle portion thereof with a window hole through which the actuator C extends, and a guide tube  12  extending upward from a circumferential portion of the window hole. 
         [0029]    The cylinder member B includes a large-diameter air cylinder  20  having an upper end secured to a circumferential portion of a back surface of a top portion the placing cap A, along with a small-diameter liquid cylinder  21  extending concentrically with and below the air cylinder  20 . The liquid cylinder  21  is configured to include a bottom wall portion whose front surface serves as a valve seat. The liquid cylinder  21  also includes an integrally-formed pipe fitting tube extending downward from a periphery of a central opening of the bottom wall portion. There is also provided a suction pipe  22  including an upper end fitted to the pipe fitting tube and a lower end suspended to reach a lower end portion of the container body  100 . Furthermore, a plurality of engagement ribs  23  is projectingly provided circumferentially in a portion of an inner surface of the liquid cylinder  21  starting from a peripheral portion of the bottom wall portion and extending to a lower end portion of a circumferential wall portion of the liquid cylinder  21 . Each engagement rib  23  includes an upwardly stepped portion in a middle portion between a top and a bottom of the engagement rib  23 . 
         [0030]    The actuator C is mounted to the cylinder member B such that the actuator C is urged upward and displaceable upward and downward. The actuator member C includes a stem  30 , a liquid piston  35 , an air piston  40 , a dispenser head  50 , and a tubular member  70 . 
         [0031]    The stem  30  has a tubular shape with open upper and lower ends. The liquid piston  35 , which is adapted to slide in the liquid cylinder  35 , is provided to protrude from the lower portion of the outer circumference of the stem  30 . The air piston  40 , which is adapted to slide in the air cylinder  20 , is linked to an upper portion of the outer circumference of the stem  30 . Thus, the stem  30  is provided to be displaceable upward and downward in the liquid cylinder  35  and in the air cylinder  20 . Inside the stem  30  in an upper portion thereof, a dispenser valve  31  is provided, and a plurality of longitudinal ridges  32  is also provided circumferentially below the dispenser valve  31 . Furthermore, on an outer surface of the stem  30 , an air dispenser valve seat  33  is provided to protrude in a flange shape. 
         [0032]    The liquid piston  35  includes a fitting tubular portion  36  fitted in a lower portion of the stem  30 , and a sliding portion  37  in a skirt shape that protrudes outward from an outer circumference of a lower end of the fitting tubular portion  36 , to with the sliding portion  37  slidably fitted to an inner circumference of the liquid cylinder  21  in a liquid-tight manner. The fitting tubular portion  36  forms, at an upper end portion thereof in a middle portion between the top and the bottom of the stem  30 , a ridge-shaped check valve seat  38 . There is also interposed a coil spring s between a lower surface of the fitting tubular portion  36  of the liquid piston  35  and the upwardly stepped portion of each engagement rib  23 , so that the actuator C is constantly urged upward by the coil spring s. 
         [0033]    The air piston  40  includes a tubular valve portion  41  provided in an inner circumference thereof and fitted to the outer circumference of the stem  30  so as to be gradually displaceable upward and downward, and a sliding portion  43  composed of an upper and a lower skirt-like portion and fitted to an inner circumference of the air cylinder  20 , and a stepped wall portion  42  extending from an outer circumference of the tubular valve portion  41  to the sliding portion  43 . The tubular valve portion  41  and the air dispenser valve seat  33  together form an air dispenser valve  44 . The air dispenser valve  44  is closed when the actuator C is displaced to an uppermost position, opened when the actuator C is depressed down, and closed when the actuator C is displaced upward from the depressed position by the upward urging force. Furthermore, there is provided an outer-air introducing valve  45  in the stepped walled portion  42  of the air piston  40 , for introducing an outer air. The outer-air introducing valve  45  includes a valve hole  46  pierced through the stepped wall portion  42  and a valve plate  47  pressed against the stepped wall portion  42 , and when upward displacement of the depressed actuator C creates a negative pressure in the air cylinder  20 , the outer-air introducing valve  45  is opened for introducing the outer air. The outer-air introducing valve  45  also includes a wall portion  48  standing on an upper surface of the stepped wall portion  42  except for an outer periphery of the valve hole  46 , so the wall portion  48  prevents a liquid from permeating the air cylinder  20  even when the liquid is permeated through the guide tube  12 . 
         [0034]    The dispenser head  50  includes two members, i.e., a first member  50   a  and a second member  50   b,  that are easy to cut out with a die and can be formed in a small thickness during molding. 
         [0035]    The first member  50   a  includes a top plate  51 , a longitudinal tube  52  suspending from a middle portion of a back surface of the top plate  51  and fitted around an outer circumference of an upper portion of the stem  30 , and a nozzle  53  provided on the longitudinal tube  52  to protrude forward and including an open base end. A top portion of the base end of the nozzle  53  in part constitutes the top plate  51 . The longitudinal tube  52  includes, in an upper portion thereof, a large-diameter first stepped portion  52   a,  and also includes, in a middle portion between a top and a bottom thereof, a plurality of elongated strip-shaped protrusions  52   b  circumferentially arranged to bulge out. Each strip-shaped protrusion  52   b  protrudes such that an outer surface of the strip-shaped protrusion  52   b  is in proximity to an inner surface of the guide tube  12 . The longitudinal tube  52  also includes a second stepped portion  52   c  extending from a lower end portion of each strip-shaped protrusion  52   b,  the second stepped portion  52   c  having an even larger diameter. Furthermore, there is provided a plurality of ribs  54  protruding from an outer surface of the longitudinal tube  52  between adjacent strip-shaped protrusions  52   b.  In the present embodiment, as shown in  FIG. 3 , one rib  54  protrudes between each strip-shaped protrusion  52   b,  and as shown in  FIG. 4 , an outer edge of the rib  54  is in proximity to the inner surface of the guide tube  12 . Note that the number of the ribs  54  is not limited to the present embodiment, and two or another number of ribs  54  may be protruded between each strip-shaped protrusion  52   b  as shown in  FIG. 5 . Furthermore, the number of strip-shaped protrusions  52   b  is not limited to four as illustrated in the figures. Moreover, there is provided a hook  55  protruding from each of a lower surface of the nozzle  53  and a lower surface of the top plate  51 . 
         [0036]    The second member  50   b  includes a ring-shaped top plate portion  60 , a vertical wall portion  61  suspending from an outer circumference of the top plate portion  60 , and a circumferential wall portion  62  suspending from an inner circumference of the top plate portion  60 . Furthermore, the second member  50   b  includes, for fitting the base end of the nozzle  53 , a first fitting recess  63  in a front portion the second member  50   b,  and also includes, for fitting an outer circumference of the top plate  51 , a second fitting recess  64  in contiguity with first fitting recess  63 . Accordingly, the first fitting recess  63  has a linear shape with a large longitudinal width, and the second fitting recess  64  has a substantially annular shape with a longitudinal width as small as a material thickness. Furthermore, the second member  50   b  includes a fitting holes  65  in each of a bottom wall portion of the first fitting recess  63  and a bottom wall portion of the second fitting recess  64  that correspond to the hooks  55  when the second member  50   b  is fitted to the first member  50   a,  and the fitting holes  65  and the hooks  55  together form an engagement member. 
         [0037]    The first and the second member  50   a  and  50   b  are fixedly fitted to each other, with each hook  55  engaged in the corresponding engagement hole  65 , and thus the dispenser head  50  is formed. Furthermore, the tubular member  70  as a partition wall having a small-diameter tower portion is fitted below the first stepped portion  52   a  of the dispenser head  50  so as to fit a lower portion of the longitudinal tube  52  around the outer circumference of the upper portion of the stem  30 . The air cylinder  20  and the stem  30  are in communication via an air passage  66  that passes between the stem  30  and the longitudinal tube  52  to communicate with an inside of the stem  30  below the tubular member  70 , and a gas-liquid mixing chamber R is defined between the tubular member  70  and the dispenser valve  31 . Furthermore, a lower end of the circumferential wall portion  62  is suspended to a position of an upper end portion of an outer circumference of the guide tube  12  such that a ridged end face of the circumferential wall portion  62  abuts against or is in proximity to a ridged end face of the guide tube  12 . In the dispenser head  50 , a top surface constituted by the first and the second member  50   a  and  50   b  is inclined downward from front to rear, and accordingly, the entire nozzle  53  is similarly inclined. The bottom wall portion of the first fitting recess  63  and the bottom wall portion of the second fitting recess  64  are also similarly inclined. 
         [0038]    In a downstream of the gas-liquid mixing chamber R, a forming member  71  is provided. The foaming member  71  in the present embodiment includes a pair of tubular bodies  71   b  in which meshes  71   a  are stretched, and the foaming member  71  is fitted in the tubular member  70  such that the meshes  71   a  are arranged on top and bottom. 
         [0039]    The poppet valve body D has a length extending from an inside of the liquid cylinder  21  to the stem  30  and includes a plurality of engagement protrusions  75  circumferentially provided in a lower end portion of an outer circumference thereof. One engagement protrusions  75  is positioned between each engagement rib  23  of the liquid cylinder  21 . A circumference of a lower surface of each engagement protrusion  75  is tapered so as to form a suction valve  76  in cooperation with a suction valve seat formed by a bottom surface of the liquid cylinder  21 . The poppet valve body D is displaceable upward and downward from a position where the lower surface abuts against the suction valve seat to a position where each engagement protrusion  75  abuts against a lower surface of the coil spring s. The poppet valve body D also includes, at a top thereof, a check valve body  77  spreading in a tapered s tubular shape, and the check valve body  77  and the check valve seat  38  together form a check valve  78 . 
         [0040]    The spacer E includes a fitting portion  80  of a circular-arc plate shape detachably fitted to the outer circumference of the guide tube  12 , and a knob portion  81  of a plate shape protruding rearward from a rear surface of the fitting portion  80 . When fitted, the fitting portion  80  of the spacer E abuts against a lower surface of the circumferential wall portion  62  of the dispenser head  50  so as to prevent the actuator C from being depressed. The fitting portion  80  is forced to be fitted to the outer circumference of the guide tube  12  by elastically spreading the fitting portion  80 . 
         [0041]    From the state of the foam dispenser  1  shown in  FIG. 1 , by removing the spacer E and depressing the dispenser head  50 , the air piston  40  is displaced upward relative to the stem  30 , and the air dispenser valve  44  is opened. As the air piston  40  is displaced downward, an air inside the air cylinder  20  is pressurized to be introduced into the gas-liquid mixing chamber R via the air passage  66 . On the other hand, the stem  30  is depressed downward, thereby displacing the poppet valve body D downward until the poppet valve body D comes into abutment against the suction valve seat. As the poppet valve body D is displaced upward relative to the stem  30  and the check valve  78  is opened, a pressurized liquid inside the liquid cylinder  21  is introduced into the gas-liquid mixing chamber R via the dispenser valve  31 . The air and the liquid are mixed in the gas-liquid mixing chamber R. In this regard, the poppet valve body D is displaced upward relative to the stem  30  while the check valve body  77  of the poppet valve body D is in sliding contact with an inner surface of each longitudinal ridge  32  of the stem  30 . The mixed gas and liquid in the gas-liquid mixing chamber R passes through the foaming member  71  to be foamed and dispensed from the nozzle  53  as foam. 
         [0042]    When the dispenser head  50  is released, the actuator C is displaced upward by the upward urging force of the coil spring s. At this time, the air piston  40  is displaced downward relative to the stem  30  to close the air dispenser valve  44 , thereby creating the negative pressure in the air cylinder  20 . As a result, the outer air introducing valve  45  is opened, and the outer air is introduced into the air cylinder  20 . On the other hand, upward displacement of the stem  30  displaces the poppet valve body D upward by a friction force generated between the check valve body  77  and each longitudinal ridge  32 , As a result, the suction valve  76  is opened, and the liquid within the container body  100  is introduced into the liquid cylinder  21  under the negative pressure, while the dispenser valve  31  is closed. The poppet valve body D is displaced upward until the engagement protrusions  75  thereof come into abutment with the lower surface of the coil spring s and subsequently displaced downward relative to the stem  30  until the check valve body  77  comes into abutment with the check valve seat  38 . 
         [0043]      FIGS. 6-8  show another embodiment in which the second fitting recess  64  of the second member  50   b  in the embodiment shown in  FIG. 1  is further recessed to form an annular drain recess  67  provided with a drain hole  68 . In the present embodiment, the fitting hole  65  doubles as the drain hole  68 . Furthermore, the first fitting recess  63  is provided with the drain hole  68  as well. The drain holes  68  of the first and the second fitting recess  63  and  64  may be independently provided. In this case also, the top surface of the dispenser head  50  that is constituted by the first and the second member  50   a  and  50   b  is inclined downward from front to rear, and the lower surface of the nozzle  53  is also inclined from front to rear. Accordingly, the bottom surfaces of the first and the second fitting recess  63  and  64 , as well as a lower surface of the drain recess  67 , are inclined from front to rear. 
         [0044]    Moreover, there are provided support plates  56  in an upper portion of the circumferential wall portion  62 , for providing support. As shown in  FIG. 8 , the support plates  56  in the illustrated embodiment include a front-part lateral support plate  56   a  protruding from left and right sides of the base end of the nozzle  53  in a lateral direction, an intermediate-part lateral support plate  56   b  protruding from the left and right sides of the longitudinal tube  52  in the lateral direction, a rear-part lateral support plate  56   c  extending downward from the top plate  51  in rear of the longitudinal tube  52  with a space therebetween, a front-part longitudinal support plate  56   d  protruding forward from a front portion of the longitudinal tube  52  on the bottom surface of the nozzle  53 , and a rear-part longitudinal support plate  56   e  of a substantially L-shape protruding rearward from a rear portion of the longitudinal tube  52  and then bent upward to be coupled to the top plate  51 . In this instance, the terms “lateral” and “longitudinal” in connection with these support plates  56   a - 56   e  refer, respectively, to the lateral and longitudinal directions of the nozzle  53  itself. The rear-part longitudinal support plate  56   e  is also coupled to the rear-part lateral support plate  56   c.  The support plates  56  are integrally formed with the first member  50   a  and are extended across the circumferential wall portion  62  such that the support plates  56  are fixed at outer peripheries thereof to opposing sides of the circumferential wall portion  62  by pressure contact, engagement, and the like. It is suffice to provide at least one of the support plates  56 , and a shape and a position thereof may be determined according to a desired stiffness. Other structures are similar to those of the embodiment shown in  FIG. 1 , and a description thereof is omitted here. Furthermore, the support plates  56  may be extended between the circumferential wall portion  62  and the vertical wall portion  61 . 
         [0045]    Meanwhile, the aforementioned members are mainly made of synthetic resin, and a metal, a flexible elastomer, and the like may also be used in combination as appropriate. 
       REFERENCE SIGNS 
       [0046]      1  Foam dispenser 
         [0047]    A Placing cap 
         [0048]      10  Circumferential wall 
         [0049]      11  Top wall 
         [0050]      12  Guide tube 
         [0051]    B Cylinder member 
         [0052]      20  Air cylinder 
         [0053]      21  Liquid cylinder 
         [0054]      22  Pipe 
         [0055]      23  Engagement rib 
         [0056]    C Actuator 
         [0057]      30  Stem 
         [0058]      31  Dispenser valve 
         [0059]      32  Longitudinal ridge 
         [0060]      33  Air dispenser valve seat 
         [0061]      35  Liquid piston 
         [0062]      36  Fitting tubular portion 
         [0063]      37  Sliding portion 
         [0064]      38  Check valve seat 
         [0065]      40  Air piston 
         [0066]      41  Tubular valve portion 
         [0067]      42  Stepped wall portion 
         [0068]      43  Sliding portion 
         [0069]      44  Air dispenser valve 
         [0070]      45  Outer-air introducing valve 
         [0071]      46  Valve hole 
         [0072]      47  Valve plate 
         [0073]      48  Wall portion 
         [0074]    R Gas-liquid mixing chamber 
         [0075]      50  Dispenser head/First member 
         [0076]      51  Top plate 
         [0077]      52  Longitudinal tube 
         [0078]      52   a  First stepped portion 
         [0079]      52   b  Strip-shaped protrusion 
         [0080]      52   c  Second stepped portion 
         [0081]      53  Nozzle 
         [0082]      54  Rib 
         [0083]      55  Hook 
         [0084]      56  Support plate 
         [0085]      56   a  Front-part lateral support plate 
         [0086]      56   b  Intermediate-part lateral support plate 
         [0087]      56   c  Rear-part lateral support plate 
         [0088]      56   d  Front-part longitudinal support plate 
         [0089]      56   e  Rear-part longitudinal support plate 
         [0090]      50   b  Second member 
         [0091]      60  Top plate 
         [0092]      61  Vertical wall portion 
         [0093]      62  Circumferential wall portion 
         [0094]      63  First fitting recess 
         [0095]      64  Second fitting recess 
         [0096]      65  Fitting hole 
         [0097]      66  Air passage 
         [0098]      67  Drain recess 
         [0099]      68  Drain hole 
         [0100]      70  Tubular member 
         [0101]      71  Foaming member 
         [0102]      71   a  Mesh 
         [0103]      71   b  Tubular body 
         [0104]    D Poppet valve body 
         [0105]      75  Engagement protrusion 
         [0106]      76  Suction valve 
         [0107]      77  Check valve body 
         [0108]      78  Check valve 
         [0109]    E Spacer 
         [0110]      80  Fitting portion 
         [0111]      81  Knob portion 
         [0112]    S Coil spring 
         [0113]      100  Container body 
         [0114]      101  Neck

Technology Classification (CPC): 1