EP1525921A1 - Fluid dispenser device - Google Patents
Fluid dispenser device Download PDFInfo
- Publication number
- EP1525921A1 EP1525921A1 EP03023903A EP03023903A EP1525921A1 EP 1525921 A1 EP1525921 A1 EP 1525921A1 EP 03023903 A EP03023903 A EP 03023903A EP 03023903 A EP03023903 A EP 03023903A EP 1525921 A1 EP1525921 A1 EP 1525921A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- surrounding
- passage
- fluid
- container
- dispenser device
- 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.)
- Withdrawn
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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
- B05B11/01—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
- B05B11/1028—Pumps having a pumping chamber with a deformable wall
- B05B11/1035—Pumps having a pumping chamber with a deformable wall the pumping chamber being a bellow
Definitions
- This invention relates to a fluid dispenser device, more particularly to a fluid dispenser device adapted for mounting at a top open end of a container containing fluid therein, especially liquid with grains suspended therein.
- a conventional liquid dispenser device is shown to include a tubular mount 3 adapted for mounting at a top open end of a container 1 containing liquid therein and defining an accommodation chamber, a surrounding retaining cap 2 threadedly engaged to the top open end of the container 1, and a surrounding retaining collar 4 disposed on the surrounding retaining cap 2 so as to secure the tubular mount 3 to the top open end.
- a tubular plunger 5 is movable relative to the tubular mount 2, and has a passage fluid-tightly connected to and fluidly communicated with the accommodation chamber of the tubular mount 3 by means of a seal ring 503.
- Inlet and outlet valves 301,504 are disposed in an inlet of the accommodation chamber of the tubular mount 3 and an outlet of the passage of the plunger 5, respectively.
- a spout 6 is connected to the tubular plunger 5 for discharging liquid in the container 1.
- depression of the plunger 5 can move the seal ring 503 downwards against biasing action of a spring 8 received in the accommodation chamber of the tubular mount 3 so as to squeeze the liquid and air out of the spout 6.
- a reduced pressure is created in the accommodation chamber once the seal ring 503 and the plunger 5 are returned to their original position by means of the spring 8, thereby suctioning the liquid in the container 1 through the inlet valve 301 to replenish the accommodation chamber.
- the conventional liquid dispenser device can be applied to the container 1 for dispensing the liquid contained therein, such as liquid detergent, bath gel and shampoo.
- the conventional liquid dispenser device is not suitable for dispensing liquid with grains suspended therein because the grains may be trapped between the seal ring 503 and an inner surface of the tubular mount 3 to obstruct sliding movement of the seal ring 503 and to diminish the air-tight effect of the seal ring 503, thereby adversely affecting the movement of the plunger 5 and the biasing action of the spring 8.
- the object of the present invention is to provide a fluid dispenser device which can prevent wearing of component parts thereof and which can be operated smoothly.
- the fluid dispenser device includes a tubular mount having a surrounding wall which surrounds an axis, which defines an accommodation chamber therein, and which has an upper surrounding portion that is adapted to be fitted in a top open end of a container, and a lower surrounding portion that is opposite to the upper surrounding portion and that has an intake port adapted for suction of fluid in the container therethrough.
- a volume variable member is received in the accommodation chamber, and defines a passage therein, which extends along the axis.
- the passage includes an inlet end which is fluid-tightly secured to the lower surrounding portion and which is disposed in fluid communication with and downstream of the intake port, an outlet end which is disposed downstream of the inlet end and which is opposite to the inlet end along the axis, and an intermediate portion which is interposed between the inlet and outlet ends and which is configured such that the outlet end is movable between an expanding position, where the outlet end is away from the intake port so that the passage has a larger volume, and a collapsed position, where the outlet end is close to the intake port so that the passage has a smaller volume.
- a tubular plunger has a surrounding plunger wall which defines a conduit therein.
- the plunger wall includes a surrounding depressing portion which is fluid-tightly secured to the outlet end of the passage such that the conduit is fluidly communicated with the passage, and which is movable relative to the surrounding wall of the tubular mount along the axis so as to bring the outlet end to move between the expanding and collapsed positions, and a surrounding actuated portion which extends from the surrounding depressing portion outwardly of the upper surrounding portion so as to be actuated to move the outlet end toward the collapsed position, thereby squeezing the fluid out of the passage and creating a reduced pressure in the passage once the outlet end is returned to the expanding position.
- a biasing member is disposed to bias the outlet end towards the expanding position, thereby suctioning the fluid in the container through the intake port to replenish the passage by virtue of the reduced pressure created in the passage.
- An inlet valve member is disposed upstream of the intake port.
- the inlet valve member permits the fluid in the container to flow into the passage of the volume variable member only, and prevents the fluid from flowing back into the container when the fluid in the passage is squeezed.
- An outlet valve member is disposed downstream of the surrounding depressing portion of the conduit.
- the outlet valve member permits the fluid in the passage and the conduit to flow out through the conduit only when the fluid in the passage is squeezed, and helps create the reduced pressure in the passage by virtue of closure of the outlet valve member when the outlet end is returned to the expanding position.
- a fluid dispenser device according to the present invention is shown to be adapted for mounting at a top open end of a container 100 containing liquid therein, such as shampoo, liquid detergent with scrubbing grains suspended therein, etc.
- the fluid dispenser device is shown to comprise a tubular mount 20, a surrounding retaining cap 10, a surrounding retaining collar 30, a dipping tube 60, a volume variable member 90, a biasing member 80, a tubular plunger 40, and a spout 50.
- the tubular mount 20 has a surrounding wall 21 which surrounds an axis (L) , which defines an accommodation chamber 23 therein, and which has an upper surrounding portion 211 and a lower surrounding portion 213 opposite to each other.
- a radially extending flange 212 extends from the upper surrounding portion 211 radially and outwardly, and is adapted to be mounted on the top open end of the container 100.
- the retaining cap 10 has a surrounding top wall 12 which defines a circular hole 11 therein and which has a periphery, and a surrounding threaded wall 13 which extends downwardly from the periphery of the surrounding top wall 12.
- the upper surrounding portion 211 of the surrounding wall 21 of the tubular mount 20 passes through the circular hole 11 such that the top wall 12 is disposed on the radially extending flange 212.
- the threaded wall 13 is engaged threadedly with the top open end of the container 100.
- the surrounding retaining collar 30 is press-fitted onto the upper surrounding portion 211 so as to force the radially extending flange 212 to abut against the top wall 12, thereby securing the tubular mount 20 to the container 100.
- the lower surrounding portion 213 has a bottom wall portion 22 which defines an intake port 221 adapted for suction of the fluid in the container 100 therethrough.
- the dipping tube 60 has a connecting portion 61 which is connected to and which is fluidly communicated with the lower surrounding portion 213, and a tube portion 62 which extends downwardly from the connecting portion 61 and which is adapted to dip into the liquid in the container 100.
- An inlet valve member 63 includes a valve seat 631 which is formed integrally with the tube portion 62 and which extends towards the axis (L) in radial directions, and a ball 632 which is detachably engaged with the valve seat 631 so as to open and close the valve seat 631.
- a porous member 71 is disposed on the connecting portion 61 so as to deny entry of the ball 632 into the accommodation chamber 23.
- a tubular stem 70 extends from the porous member 71 along the axis (L).
- the volume variable member 90 is made from a flexible material, and is configured to have a bellows shape.
- the volume variable member 90 is received in the accommodation chamber 23, and defines a passage 94 therein, which extends along the axis (L).
- the passage 94 includes an inlet end 91 which is fluid-tightly secured to the connecting portion 61 and which is disposed in fluid communication with and downstream of the intake port 221, an outlet end 92 which is disposed downstream of the inlet end 91 and which is opposite to the inlet end 91 along the axis (L), and an intermediate portion 93 which is interposed between the inlet and outlet ends 91, 92 and which is configured such that the outlet end 92 is movable between an expanding position, where the outlet end 92 is away from the intake port 221 so that the passage 94 has a larger volume (as shown in Fig. 4) , and a collapsed position, where the outlet end 92 is close to the intake port 221 so that the passage 94 has a smaller volume (as
- the biasing member 80 is a coil spring 80 which is received in the passage 94 and which is sleeved on the tubular stem 70 so as to firmly bias the outlet end 92 towards the expanding position.
- the tubular plunger 40 has a surrounding plunger wall 41 which defines a conduit 412 therein.
- the plunger wall 41 includes a surrounding depressing portion 421 which is fluid-tightly secured to the outlet end 92 of the passage 94 such that the conduit 412 is fluidly communicated with the passage 94, a surrounding flange portion 42 which extends outwardly and radially from the surrounding depressing portion 421 such that the surrounding flange portion 42 is in slidable contact with an inner surface of the surrounding wall 21 of the tubular mount 20 so as to stabilize the movement of the outlet end 92 along the axis (L) between the expanding and collapsed positions, and a surrounding actuated portion 411 which extends from the surrounding depressing portion 421 along the axis (L) and outwardly of the surrounding retaining collar 30.
- the spout 50 is connected to the surrounding actuated portion 411, and is fluidly communicated with the conduit 412 for discharging the liquid from the conduit 412.
- a flexible strap 52 has one end retained between the surrounding retaining cap 10 and the surrounding retaining collar 30, and the other end provided with a stopper 521 which is disposed to detachably plug the spout 50 so as to prevent flow of the liquid through the spout 50 when the container 100 is unintentionally squeezed.
- an outlet valve member 43 includes a valve seat 431 which is formed integrally with the surrounding plunger wall 41 at a position between the surrounding depressing portion 421 and the surrounding actuated portion 411, and which extends towards the axis (L) in radial directions, and a ball 432 which is detachably engaged with the valve seat 431 so as to open and close the valve seat 431.
- the outlet end 92 is returned to the expanding position by virtue of the biasing action of the coil spring 80, thereby creating a reduced pressure in the passage 94 and the conduit 412.
- the liquid in the container 100 is suctioned through the inlet valve member 63 and the porous member 71 to replenish the passage 94 and the conduit 412 by virtue of the reduced pressure for a next dispensing operation.
- the ball 432 of the outlet valve member 43 closes the valve seat 431 so as to help maintain the reduced pressure.
- the inner surface of the surrounding wall 21 will not be subject to the grinding action of the grains suspended in the liquid, thereby ensuring the smooth sliding movement of the surrounding flange portion 42 along the inner surface of the surrounding wall 21 and the biasing movement of the coil spring 80.
- the service life of the tubular mount 20, the tubular plunger 40 and the coil spring 80 can be thus prolonged.
Abstract
Description
- This invention relates to a fluid dispenser device, more particularly to a fluid dispenser device adapted for mounting at a top open end of a container containing fluid therein, especially liquid with grains suspended therein.
- Referring to Fig. 1, a conventional liquid dispenser device is shown to include a
tubular mount 3 adapted for mounting at a top open end of acontainer 1 containing liquid therein and defining an accommodation chamber, a surrounding retainingcap 2 threadedly engaged to the top open end of thecontainer 1, and a surrounding retaining collar 4 disposed on the surrounding retainingcap 2 so as to secure thetubular mount 3 to the top open end. Atubular plunger 5 is movable relative to thetubular mount 2, and has a passage fluid-tightly connected to and fluidly communicated with the accommodation chamber of thetubular mount 3 by means of aseal ring 503. Inlet and outlet valves 301,504 are disposed in an inlet of the accommodation chamber of thetubular mount 3 and an outlet of the passage of theplunger 5, respectively. A spout 6 is connected to thetubular plunger 5 for discharging liquid in thecontainer 1. As such, referring to Fig. 2, depression of theplunger 5 can move theseal ring 503 downwards against biasing action of a spring 8 received in the accommodation chamber of thetubular mount 3 so as to squeeze the liquid and air out of the spout 6. A reduced pressure is created in the accommodation chamber once theseal ring 503 and theplunger 5 are returned to their original position by means of the spring 8, thereby suctioning the liquid in thecontainer 1 through theinlet valve 301 to replenish the accommodation chamber. - The conventional liquid dispenser device can be applied to the
container 1 for dispensing the liquid contained therein, such as liquid detergent, bath gel and shampoo. However, the conventional liquid dispenser device is not suitable for dispensing liquid with grains suspended therein because the grains may be trapped between theseal ring 503 and an inner surface of thetubular mount 3 to obstruct sliding movement of theseal ring 503 and to diminish the air-tight effect of theseal ring 503, thereby adversely affecting the movement of theplunger 5 and the biasing action of the spring 8. - The object of the present invention is to provide a fluid dispenser device which can prevent wearing of component parts thereof and which can be operated smoothly.
- According to this invention, the fluid dispenser device includes a tubular mount having a surrounding wall which surrounds an axis, which defines an accommodation chamber therein, and which has an upper surrounding portion that is adapted to be fitted in a top open end of a container, and a lower surrounding portion that is opposite to the upper surrounding portion and that has an intake port adapted for suction of fluid in the container therethrough.
- A volume variable member is received in the accommodation chamber, and defines a passage therein, which extends along the axis. The passage includes an inlet end which is fluid-tightly secured to the lower surrounding portion and which is disposed in fluid communication with and downstream of the intake port, an outlet end which is disposed downstream of the inlet end and which is opposite to the inlet end along the axis, and an intermediate portion which is interposed between the inlet and outlet ends and which is configured such that the outlet end is movable between an expanding position, where the outlet end is away from the intake port so that the passage has a larger volume, and a collapsed position, where the outlet end is close to the intake port so that the passage has a smaller volume.
- A tubular plunger has a surrounding plunger wall which defines a conduit therein. The plunger wall includes a surrounding depressing portion which is fluid-tightly secured to the outlet end of the passage such that the conduit is fluidly communicated with the passage, and which is movable relative to the surrounding wall of the tubular mount along the axis so as to bring the outlet end to move between the expanding and collapsed positions, and a surrounding actuated portion which extends from the surrounding depressing portion outwardly of the upper surrounding portion so as to be actuated to move the outlet end toward the collapsed position, thereby squeezing the fluid out of the passage and creating a reduced pressure in the passage once the outlet end is returned to the expanding position.
- A biasing member is disposed to bias the outlet end towards the expanding position, thereby suctioning the fluid in the container through the intake port to replenish the passage by virtue of the reduced pressure created in the passage.
- An inlet valve member is disposed upstream of the intake port. The inlet valve member permits the fluid in the container to flow into the passage of the volume variable member only, and prevents the fluid from flowing back into the container when the fluid in the passage is squeezed.
- An outlet valve member is disposed downstream of the surrounding depressing portion of the conduit. The outlet valve member permits the fluid in the passage and the conduit to flow out through the conduit only when the fluid in the passage is squeezed, and helps create the reduced pressure in the passage by virtue of closure of the outlet valve member when the outlet end is returned to the expanding position.
- Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiment of the invention, with reference to the accompanying drawings, in which:
- Fig. 1 is an axially sectional view of a conventional liquid dispenser device;
- Fig. 2 is an axially sectional view of the conventional liquid dispenser device in a depressed state;
- Fig. 3 is an exploded plan view of the preferred embodiment of a fluid dispenser device according to this invention;
- Fig. 4 is an axially sectional view of the preferred embodiment; and
- Fig. 5 is an axially sectional view of the preferred embodiment in a depressed state.
-
- Referring to Figs. 3 and 4, the preferred embodiment of a fluid dispenser device according to the present invention is shown to be adapted for mounting at a top open end of a
container 100 containing liquid therein, such as shampoo, liquid detergent with scrubbing grains suspended therein, etc. The fluid dispenser device is shown to comprise atubular mount 20, a surrounding retainingcap 10, a surrounding retainingcollar 30, adipping tube 60, avolume variable member 90, abiasing member 80, atubular plunger 40, and aspout 50. - The
tubular mount 20 has a surroundingwall 21 which surrounds an axis (L) , which defines anaccommodation chamber 23 therein, and which has an upper surroundingportion 211 and a lower surroundingportion 213 opposite to each other. A radially extendingflange 212 extends from the upper surroundingportion 211 radially and outwardly, and is adapted to be mounted on the top open end of thecontainer 100. The retainingcap 10 has a surroundingtop wall 12 which defines acircular hole 11 therein and which has a periphery, and a surrounding threadedwall 13 which extends downwardly from the periphery of the surroundingtop wall 12. The upper surroundingportion 211 of the surroundingwall 21 of thetubular mount 20 passes through thecircular hole 11 such that thetop wall 12 is disposed on the radially extendingflange 212. The threadedwall 13 is engaged threadedly with the top open end of thecontainer 100. The surrounding retainingcollar 30 is press-fitted onto the upper surroundingportion 211 so as to force the radially extendingflange 212 to abut against thetop wall 12, thereby securing thetubular mount 20 to thecontainer 100. - The lower surrounding
portion 213 has abottom wall portion 22 which defines anintake port 221 adapted for suction of the fluid in thecontainer 100 therethrough. - The
dipping tube 60 has a connectingportion 61 which is connected to and which is fluidly communicated with the lower surroundingportion 213, and atube portion 62 which extends downwardly from the connectingportion 61 and which is adapted to dip into the liquid in thecontainer 100. Aninlet valve member 63 includes avalve seat 631 which is formed integrally with thetube portion 62 and which extends towards the axis (L) in radial directions, and aball 632 which is detachably engaged with thevalve seat 631 so as to open and close thevalve seat 631. Aporous member 71 is disposed on the connectingportion 61 so as to deny entry of theball 632 into theaccommodation chamber 23. Atubular stem 70 extends from theporous member 71 along the axis (L). - The
volume variable member 90 is made from a flexible material, and is configured to have a bellows shape. Thevolume variable member 90 is received in theaccommodation chamber 23, and defines apassage 94 therein, which extends along the axis (L). Thepassage 94 includes aninlet end 91 which is fluid-tightly secured to the connectingportion 61 and which is disposed in fluid communication with and downstream of theintake port 221, anoutlet end 92 which is disposed downstream of theinlet end 91 and which is opposite to theinlet end 91 along the axis (L), and anintermediate portion 93 which is interposed between the inlet andoutlet ends outlet end 92 is movable between an expanding position, where theoutlet end 92 is away from theintake port 221 so that thepassage 94 has a larger volume (as shown in Fig. 4) , and a collapsed position, where theoutlet end 92 is close to theintake port 221 so that thepassage 94 has a smaller volume (as shown in Fig. 5). - The
biasing member 80 is acoil spring 80 which is received in thepassage 94 and which is sleeved on thetubular stem 70 so as to firmly bias theoutlet end 92 towards the expanding position. - The
tubular plunger 40 has a surroundingplunger wall 41 which defines aconduit 412 therein. Theplunger wall 41 includes a surroundingdepressing portion 421 which is fluid-tightly secured to theoutlet end 92 of thepassage 94 such that theconduit 412 is fluidly communicated with thepassage 94, a surroundingflange portion 42 which extends outwardly and radially from the surroundingdepressing portion 421 such that the surroundingflange portion 42 is in slidable contact with an inner surface of the surroundingwall 21 of thetubular mount 20 so as to stabilize the movement of theoutlet end 92 along the axis (L) between the expanding and collapsed positions, and a surrounding actuatedportion 411 which extends from the surroundingdepressing portion 421 along the axis (L) and outwardly of the surrounding retainingcollar 30. - The
spout 50 is connected to the surrounding actuatedportion 411, and is fluidly communicated with theconduit 412 for discharging the liquid from theconduit 412. Preferably, aflexible strap 52 has one end retained between the surrounding retainingcap 10 and the surrounding retainingcollar 30, and the other end provided with astopper 521 which is disposed to detachably plug thespout 50 so as to prevent flow of the liquid through thespout 50 when thecontainer 100 is unintentionally squeezed. - In this embodiment, like the
inlet valve member 63, anoutlet valve member 43 includes avalve seat 431 which is formed integrally with the surroundingplunger wall 41 at a position between the surroundingdepressing portion 421 and the surrounding actuatedportion 411, and which extends towards the axis (L) in radial directions, and aball 432 which is detachably engaged with thevalve seat 431 so as to open and close thevalve seat 431. - As shown in Fig. 5, when the
spout 50 is depressed against biasing action of thecoil spring 80 to actuate thetubular plunger 40 so as to move theoutlet end 92 of thevolume variable member 90 toward the collapsed position, the grain-containing liquid and air inside thecontainer 100 are squeezed up thepassage 94, theconduit 412 and theoutlet valve member 43 for discharging through thespout 50. During this operation, theball 432 of theoutlet valve member 43 is lifted to thereby open thevalve seat 431, while theball 632 of theinlet valve member 63 closes thevalve seat 631 to prevent the liquid from flowing back into thecontainer 100. - When the
spout 50 is released, theoutlet end 92 is returned to the expanding position by virtue of the biasing action of thecoil spring 80, thereby creating a reduced pressure in thepassage 94 and theconduit 412. At this time, the liquid in thecontainer 100 is suctioned through theinlet valve member 63 and theporous member 71 to replenish thepassage 94 and theconduit 412 by virtue of the reduced pressure for a next dispensing operation. At the same time, theball 432 of theoutlet valve member 43 closes thevalve seat 431 so as to help maintain the reduced pressure. - Since the liquid in the
container 100 is suctioned into thepassage 94 of thevolume variable member 90 and does not contact the surroundingwall 21 of thetubular mount 20, the inner surface of the surroundingwall 21 will not be subject to the grinding action of the grains suspended in the liquid, thereby ensuring the smooth sliding movement of the surroundingflange portion 42 along the inner surface of the surroundingwall 21 and the biasing movement of thecoil spring 80. The service life of thetubular mount 20, thetubular plunger 40 and thecoil spring 80 can be thus prolonged.
Claims (9)
- A fluid dispenser device adapted for mounting at a top open end of a container (100) containing fluid therein, said fluid dispenser device comprising:a tubular mount (20) having a surrounding wall (21) which surrounds an axis (L), which defines an accommodation chamber (23) therein, and which has an upper surrounding portion (211) that is adapted to be fitted in the top open end of the container (100) , and a lower surrounding portion (213) that is opposite to said upper surrounding portion (211) and that has an intake port (221) adapted for suction of the fluid in the container (100) therethrough; anda tubular plunger (40) having a surrounding plunger wall (41) which defines a conduit (412), characterized by:a volume variable member (90) received in said accommodation chamber (23), and defining a passage (94) therein which extends along the axis (L) , said passage (94) including an inlet end (91) which is fluid-tightly secured to said lower surrounding portion (213) and which is disposed in fluid communication with and downstream of said intake port (221) , an outlet end (92) which is disposed downstream of said inlet end (91) and which is opposite to said inlet end (91) along the axis (L), and an intermediate portion (93) which is interposed between said inlet and outlet ends (91,92) and which is configured such that said outlet end (92) is movable between an expanding position, where said outlet end (92) is away from said intake port (221) so that said passage (94) has a larger volume, and a collapsed position, where said outlet end (92) is close to said intake port (221) so that said passage (94) has a smaller volume;said plunger wall (41) including a surrounding depressing portion (421) which is fluid-tightly secured to said outlet end (92) of said passage (94) such that said conduit (412) is f luidly communicated with said passage (94) , and which is movable relative to said surrounding wall (21) of said tubular mount (20) along the axis (L) so as to bring said outlet end (92) to move between the expanding and collapsed positions, and a surrounding actuated portion (411) which extends from said surrounding depressing portion (421) outwardly of said upper surrounding portion (211) so as to be actuated to move said outlet end (92) toward the collapsed position, thereby squeezing the fluid out of said passage (94) and creating a reduced pressure in said passage (94) once said outlet end (92) is returned to the expanding position;a biasing member (80) disposed to bias said outlet end (92) towards the expanding position, thereby suctioning the fluid in the container (100) through said intake port (221) to replenish said passage (94) by virtue of the reduced pressure created in said passage (94);an inlet valve member (63) disposed upstream of said intake port (221), said inlet valve member (63) permitting the fluid in the container (100) to flow into said passage (94) of said volume variable member (90) only, and preventing the fluid from flowing back into the container (100) when the fluid in said passage (94) is squeezed; andan outlet valve member (43) disposed downstream of said surrounding depressing portion (421) of said tubular plunger (40), said outlet valve member (43) permitting the fluid in said passage (94) and said conduit (412) to flow out through said conduit (412) only when the fluid in said passage (94) is squeezed, and helping create the reduced pressure in said passage (94) by virtue of closure of said outlet valve member (43) when said outlet end (92) is returned to the expanding position.
- The fluid dispenser device of Claim 1, characterized in that said intermediate portion (93) of said passage (94) of said volume variable member (90) is made from a flexible material, and is configured to have a bellows shape.
- The fluid dispenser device of Claim 1, further characterized by a dipping tube (60) which is connected to and which is fluidly communicated with said lower surrounding portion (213), and which is adapted to dip into the fluid in the container (100), said inlet valve member (63) including a valve seat (631) which is formed integrally with said dipping tube (60) and which extends towards the axis (L) in radial directions, and a ball (632) which is detachably engaged with said valve seat (631) so as to open and close said valve seat (631) by virtue of a pressure difference between said passage (94) and the fluid.
- The fluid dispenser device of Claim 3, further characterized by a porous member (71) which is disposed on said lower surrounding portion (213) so as to deny entry of said ball (632) into said passage (94) while permitting flow of the fluid in the container (100) into said passage (94).
- The fluid dispenser device of Claim 4, further characterized by a tubular stem (70) which extends from said porous member (71) along the axis (L), said biasing member (80) being a coil spring (80) which is received in said passage (94), and which is sleeved on said tubular stem (70) such that the biasing movement of said coil spring (80) is stabilized.
- The fluid dispenser device of Claim 1, characterized in that said outlet valve member (43) includes a valve seat (431) which is formed integrally with said surrounding plunger wall (41) at a position between said surrounding depressing portion (421) and said surrounding actuated portion (411) and which extends towards the axis (L) in radial directions, and a ball (432) which is detachably engaged with said valve seat (431) so as to open and close said valve seat (431) by virtue of squeezing of the fluid.
- The fluid dispenser device of Claim 1, characterized in that said tubular plunger (40) further has a surrounding flange portion (42) which extends outwardly and radially from said surrounding depressing portion (421) such that said surrounding flange portion (42) is in slidable contact with said surrounding wall (21) of said tubular mount (20), thereby stabilizing movement of said outlet end (92) along the axis (L) between the expanding and collapsed positions.
- The fluid dispenser device of Claim 1, characterized in that said tubular mount (20) further includes a radially extending flange (212) which extends from said surrounding wall (21) radially and outwardly and which is adapted to be mounted on the top open end of the container (100), said fluid dispenser device further comprising
a surrounding retaining cap (10) which has a surrounding top wall (12) that has a periphery and that is disposed on said radially extending flange (212), and a surrounding threaded wall (13) that extends downwardly from said periphery of said surrounding top wall (12) and that is adapted to engage threadedly the top open end of the container (100), and
a surrounding retaining collar (30) which is engaged with said upper surrounding portion (211) so as to force said radially extending flange (212) to abut against said surrounding top wall (12) of said surrounding retaining cap (10), thereby securing said tubular mount (20) onto the container (100) . - The fluid dispenser device of Claim 8, further characterized by a spout (50) which is connected to said surrounding actuated portion (411) and which is fluidly communicated with said conduit (412) for discharging the fluid squeezed up said conduit (412).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP03023903A EP1525921A1 (en) | 2003-10-21 | 2003-10-21 | Fluid dispenser device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP03023903A EP1525921A1 (en) | 2003-10-21 | 2003-10-21 | Fluid dispenser device |
Publications (1)
Publication Number | Publication Date |
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EP1525921A1 true EP1525921A1 (en) | 2005-04-27 |
Family
ID=34384585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP03023903A Withdrawn EP1525921A1 (en) | 2003-10-21 | 2003-10-21 | Fluid dispenser device |
Country Status (1)
Country | Link |
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EP (1) | EP1525921A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0171462A2 (en) * | 1984-08-14 | 1986-02-19 | Ing. Erich Pfeiffer GmbH & Co. KG | Dispenser for flowing material |
JPH09267855A (en) * | 1996-03-29 | 1997-10-14 | Shiseido Co Ltd | Dispenser |
JPH10101115A (en) * | 1996-09-30 | 1998-04-21 | Yoshino Kogyosho Co Ltd | Liquid jet pump |
EP1243216A1 (en) * | 1999-12-07 | 2002-09-25 | Advanex Inc. | Valve unit and container |
US6536630B1 (en) * | 2002-03-28 | 2003-03-25 | Living Fountain Plastic Industrial Co., Ltd. | Structure for dispensing emulsion |
-
2003
- 2003-10-21 EP EP03023903A patent/EP1525921A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0171462A2 (en) * | 1984-08-14 | 1986-02-19 | Ing. Erich Pfeiffer GmbH & Co. KG | Dispenser for flowing material |
JPH09267855A (en) * | 1996-03-29 | 1997-10-14 | Shiseido Co Ltd | Dispenser |
JPH10101115A (en) * | 1996-09-30 | 1998-04-21 | Yoshino Kogyosho Co Ltd | Liquid jet pump |
EP1243216A1 (en) * | 1999-12-07 | 2002-09-25 | Advanex Inc. | Valve unit and container |
US6536630B1 (en) * | 2002-03-28 | 2003-03-25 | Living Fountain Plastic Industrial Co., Ltd. | Structure for dispensing emulsion |
Non-Patent Citations (2)
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PATENT ABSTRACTS OF JAPAN vol. 1998, no. 02 30 January 1998 (1998-01-30) * |
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 09 31 July 1998 (1998-07-31) * |
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