WO2020165230A1 - A wash bottle - Google Patents

A wash bottle Download PDF

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Publication number
WO2020165230A1
WO2020165230A1 PCT/EP2020/053565 EP2020053565W WO2020165230A1 WO 2020165230 A1 WO2020165230 A1 WO 2020165230A1 EP 2020053565 W EP2020053565 W EP 2020053565W WO 2020165230 A1 WO2020165230 A1 WO 2020165230A1
Authority
WO
WIPO (PCT)
Prior art keywords
wash bottle
dispensing tube
bottle
ball
flush valve
Prior art date
Application number
PCT/EP2020/053565
Other languages
French (fr)
Inventor
Yannik Karl-Heinz SCHNEIDER
Original Assignee
Universitetet I Tromsø - Norges Arktiske Universitet
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universitetet I Tromsø - Norges Arktiske Universitet filed Critical Universitetet I Tromsø - Norges Arktiske Universitet
Publication of WO2020165230A1 publication Critical patent/WO2020165230A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/10—Wash bottles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves
    • 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
    • B05B11/04—Deformable containers producing the flow, e.g. squeeze bottles
    • B05B11/047—Deformable containers producing the flow, e.g. squeeze bottles characterised by the outlet or venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/30—Dip tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/32—Containers adapted to be temporarily deformed by external pressure to expel contents
    • B65D1/323—Containers adapted to be temporarily deformed by external pressure to expel contents the container comprising internally a dip tube through which the contents pass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/06—Fluid handling related problems
    • B01L2200/0615—Loss of fluid by dripping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/06—Fluid handling related problems
    • B01L2200/0684—Venting, avoiding backpressure, avoid gas bubbles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/12—Specific details about materials
    • B01L2300/123—Flexible; Elastomeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2400/00—Moving or stopping fluids
    • B01L2400/04—Moving fluids with specific forces or mechanical means
    • B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
    • B01L2400/0481—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure squeezing of channels or chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2400/00—Moving or stopping fluids
    • B01L2400/06—Valves, specific forms thereof
    • B01L2400/0605—Valves, specific forms thereof check valves
    • B01L2400/0616—Ball valves

Definitions

  • the present invention relates to containers for storing and dispensing liquids, and more particularly the present invention relates to a wash bottle for storing and dispensing chemicals or solvents.
  • wash bottles produced or manufactured from flexible materials are standard equipment in laboratories and similar environments, where the flexible wash bottle permits dispensing of the liquid content(s) by squeezing the wash bottle.
  • wash bottles comprise a squeezable container having a flexible and resilient sidewall and a discharge tube extending from within the wash bottle and to an outside of the wash bottle.
  • the discharge tube that extends outside the wash bottle may be bent to facilitate directing the stream of liquid to a desired area.
  • wash bottles produced or manufactured from one or more flexible materials have found wide-spread use in laboratories of universities, scientific research institutions in the chemical, pharmaceutical, food, geological,
  • wash bottle for instance, may be used to rinse experimental containers and solutions with distilled water or the like, where the flexible construction of the wash bottle permits dispensing of liquid content(s) by squeezing the wash bottle.
  • wash bottles comprise a squeezable bottle body having a flexible and resilient sidewall and a discharge tube extending from within the wash bottle and to an outside of the wash bottle.
  • the discharge tube that extends outside the wash bottle is often bent to facilitate directing the stream of liquid towards a desired surface or area.
  • the wash bottle is then to be used, for example, to flush or wash away powdery chemicals from e.g. a weighing sheet and into a container, firstly the air will be blown out of the discharge tube, where this air might blow away, at least a small amount of the powdery chemicals. This will create an accuracy and convenience problem in e.g. analytical and preparative chemistry.
  • Another problem that may occur is when the wash bottle is lifted from a surface by a user, as the discharge tube of the wash bottle then may drop out liquid when the wash bottle is grabbed, as little pressure is sufficient to press or squeeze out some liquid from the wash bottle.
  • the wash bottles are used to store volatile, aggressive or high-purity materials, such as solvents and chemicals.
  • volatile liquids form vapors
  • a pressure differential may be created between an inside and an outside of the wash bottle body, which may result in the volatile liquid in the wash bottle flowing through the discharge tube in order to equalize the pressure inside and outside the wash bottle.
  • wash bottle or discharge tube is not closed, this may also result in the content in the wash bottle may leak out from the wash bottle if the wash bottle tips over.
  • Such an open wash bottle or discharge tube may also result in moisture from ambient air may mix with the high-purity materials contained in the wash bottle, whereby the quality and characteristics of the material may be affected.
  • US 4.557.401 relates to a control unit for a squeeze type fluid container, where the control unit is attached to a tube extending from inside the container to the outside.
  • the control unit has a check valve resiliently held to open in response to pressure inside the container; which permits fluid to flow through the control unit and out the tube.
  • the control valve has a second check valve positioned inside the first check valve casing, and resiliently held to open in response to a negative pressure inside the container to permit fluid to flow from the tube through the control unit and back into the container.
  • US 2004/173636 A1 relates to a bottle for storing, identifying, and dispensing liquids, where the bottle comprises a valve-type nozzle coupled to the outer end of the tube, a vent, and an optional identification tag.
  • the valve-type nozzle is adjustable along a continuous range between open and closed conditions to permit dispensing of fluid in a controlled fashion and sealing of the container.
  • US 8.322.578 B2 relates to a one-way valve for the recontamination-protected repeated discharge of a flowable material from a container of a preferably reducible volume, where the one-way valve contains a valve seat which consists of a rigid plastic material and which is arranged in the container neck and comprises a base body which rests on the inner wall of the container neck and contains at least one through hole, and a projection which extends in axial direction of the container neck towards the exit opening.
  • a valve seat which consists of a rigid plastic material and which is arranged in the container neck and comprises a base body which rests on the inner wall of the container neck and contains at least one through hole, and a projection which extends in axial direction of the container neck towards the exit opening.
  • the valve seat has arranged thereabove an elastic seal which comprises an annular section covering the at least one through hole, and a sleeve-like section which surrounds the projection at a radial distance with the exception of its end section which in the closed state of the one-way valve rests in the exit opening on the end section of the projection.
  • a sterilization element of silver or of another metal having an oligodynamic action may be arranged in the intermediate space between the projection of the valve seat and the elastic seal.
  • JP 2010179954 A relates to a pure water feeding container including a plastic-made container body with a top opening; a freely attachable/detachable lid fitted airtightly on the top opening; a pure water feeding tube penetrating through the lid and extending into an inside of the container body; and a water pouring opening fitted to the upper part of the lid and connected with the upper end of the pure water feeding tube.
  • a pure water feeding container at a position upper further than the pure water storing part of the cylindrical wall part, a filter for filtering fine particles in air is mounted, and a check valve for inhibiting a reverse flow is provided on the feeding tube, and a check valve for preventing clean air in the container from flowing out is provided in the passage with the filter.
  • CN 202683243 U relates to a plastic washing bottle for a laboratory, where the washing bottle comprises a plastic washing bottle body, a nozzle pipeline is connected to a bottle cover of the plastic washing bottle body, a one-way water outlet valve is mounted on the nozzle pipeline, an air return pipe is further mounted on the bottle cover, a lower pipe opening of the air return pipe is located above the liquid level of the plastic washing bottle body, and a one-way air inlet valve is mounted on the air return pipe.
  • the air return pipe is arranged on the plastic washing bottle body, the one-way air inlet valve is arranged on the air return pipe, the one-way water outlet valve is arranged on the nozzle pipeline, so that under the action of the one-way valves, discharged water passes through the nozzle pipeline and returned air passes through the air return pipe.
  • the object of the present invention is to provide a wash bottle for storing and dispensing chemicals or solvents, where the wash bottle minimizes or alleviates one or more of the disadvantages of the prior art, or at least provides a useful
  • the present invention relates to a wash bottle for storing and dispensing a liquid
  • the wash bottle comprises a bottle body having flexible sidewalls defining an interior reservoir in the wash bottle and an open end providing access to the interior reservoir, a closure connected to the open end, a dispensing tube having a first end being in communication with the interior reservoir and an opposite second end being in communication with ambient air outside the wash bottle, and where a back- flush valve is connected to at least one of the first and second ends of the dispensing tube, or the back flush valve is being arranged arbitrary between the first and second end of the dispensing tube and where an air vent valve is provided in the closure.
  • the wash bottle is preferably of a clear plastic to permit viewing the fluid level inside the wash bottle.
  • a portion of the dispensing tube extending exteriorly of the wash bottle may be bent to facilitate directing fluid dispensed from the wash bottle to a desired location.
  • the open end of the wash bottle includes a neck portion, where the neck portion around an outer surface, over at least a part of the neck portion’s length, is provided with threads.
  • the closure in the form of a screw cap, may then, around an inner surface, be provided with complementary threads, such that the wash bottle can be closed and opened.
  • the screw cap may then be provided with a through-going opening, such that the dispensing tube can be guided through the screw cap and into the interior reservoir of the wash bottle.
  • the neck portion of the wash bottle may be provided with one or more protrusions in the form of a rib or the like around an outer periphery of the neck portion.
  • the closure in the form of a pressure lid, may then be provided with one or more complementary grooves or recesses around an inner periphery of the pressure lid.
  • the pressure lid may then be provided with a through-going opening, such that the dispensing tube can be guided through the pressure lid and into the interior reservoir of the wash bottle.
  • the dispensing tube could be guided through the flexible sidewalls of the bottle body, whereby the flexible sidewalls could be provided with a through-going opening for leadthrough of the dispensing tube. A part of the dispensing tube will then extend into the interior reservoir of the wash bottle, while a remaining part of the dispensing tube will extend outside the wash bottle.
  • the flush-back valve may comprise an outer housing provided with a through-going bore, where the through- going bore over a part of the outer housing’s length will have a larger diameter, and over a remaining part of the outer housing’s length will have a smaller diameter.
  • transition between the larger diameter and the smaller diameter will form an abutment shoulder for a resilient element arranged within the through-going bore of the outer housing, where the resilient element will bias a ball also arranged within the through-going bore of the outer housing into engagement with an annular valve seat element fixedly connected to the part of the outer housing provided with the larger diameter bore.
  • the part of the outer housing being provided with the smaller diameter bore may have a tapered form.
  • the back-flush valve may comprise a housing provided with a through-going bore, where a resilient element and a ball are arranged within the through-going bore, and where one end of the housing forms an annular valve seat for the ball and an opposite end of the housing is closed with a plate element, where the plate element forms an abutment surface for the resilient element.
  • An opening (and thereby also a closing) of the back-flush valve will depend on how stiff the resilient element is, whereby a back-flush valve comprising a resilient element with higher stiffness will be more difficult to open than a back-flush valve comprising a resilient element with lower stiffness.
  • Such a back-flush valve will, due to the stiffness of the resilient element, close when the pressure on the wash bottle is removed, whereby the liquid will remain in the discharge tube, without allowing the discharge tube to be filled partly or completely filled with air. Furthermore, such a back-flush valve will also not open before the pressure on the wash bottle exceeds a certain limit value or“opening pressure”, whereby this will prevent accidental spill when the wash bottle is grabbed and dropped.
  • back-flush valve may further comprise at least three rails or guiding elements arranged within the through-going bore, where the rails or guiding elements are arranged equally displaced relative each other around the ball.
  • the air vent valve may comprise a housing provided with one or more through-going bores and a diaphragm or membrane, where the air vent valve may control a pressure differential created between an inside and an outside of the wash bottle. The air vent valve will then close when the wash bottle is squeezed and will therefore create an inner pressure in the wash bottle relatively quickly but will not close when the inner pressure is generated slowly.
  • the air vent valve may, for instance, be a membrane valve or a bowl valve.
  • Figure 1 A shows in a schematic way a first embodiment of a wash bottle for storing and dispensing liquid, chemicals or solvents according to the present invention
  • Figure IB shows a back-flush valve arranged in a discharge tube of the wash bottle
  • FIG. 1C shows further details of the back-flush valve according to figure IB, seen from above,
  • FIG. 2A shows in a schematic way a second embodiment of the wash bottle for storing and dispensing liquid, chemicals or solvents according to figures 1 A-1B,
  • Figures 2B-2D show different embodiments of a back flush valve arranged in the discharge tube of the wash bottle
  • FIG. 2E shows further details of the back-flush valve according to figure 2B, seen from above,
  • Figure 3 A shows in a schematic way a third embodiment of the wash bottle for storing and dispensing liquid, chemicals or solvents according to figure 1 A- IB,
  • Figures 3B-3D show different embodiments of a back flush valve arranged in the discharge tube of the wash bottle
  • FIGS 4A-4C show in a schematic way further embodiments of the wash bottle for storing and dispensing liquid, chemicals or solvents according to figures 1 A-1B.
  • Figures 1A-1C show a first exemplary embodiment of a wash bottle 1 for storing and dispensing liquid, chemicals or solvents
  • the wash bottle 1 comprises a bottle body 2 having flexible sidewalls 3 defining an interior reservoir 4 for storing a liquid, chemicals or solvents.
  • the bottle body 2 has an open end 5 for providing access to the interior reservoir 4.
  • the open end 5 includes a neck portion 6, where the neck portion 6 around an outer surface is provided with a threaded portion 7.
  • a closure 8 in form of a screw cap provided with cooperating threads 9 around an inner surface of the screw cap 8 may be screwed onto the neck portion 6 of the wash bottle 1 in order to“close” the wash bottle 1 for storing and dispensing the liquid, chemicals or solvents.
  • the screw cap 8 is provided with a through-going opening 10, such that a dispensing tube 11 can extend through the screw cap 8 and into the interior reservoir 4 of the wash bottle 1.
  • the dispensing tube 11 and screw cap 8 may be separate parts that are connected to each other to form an air- and watertight connection between the screw cap 8 and dispensing tube 1 1.
  • the dispensing tube 11 could be integrated into the screw cap 8.
  • the dispensing tube 11 is configured such that a first end 1 1 A of the dispensing tube 11 extends to the bottom-most portion G of the interior reservoir 4, but it can be envisaged that the dispensing tube 11 may alternatively extend to a position immediately inside the screw cap 8 or to any position between the bottom-most portion of the wash bottle 1 and the interior side of the bottle body 2.
  • the portion of the dispensing tube 11 extending exteriorly of the wash bottle 1 and screw cap 8 is bent to facilitate direction fluid dispensed from the wash bottle 1 to a desired location.
  • a back-flush valve 21 is connected to a second end 1 IB of the dispensing tube 11, where back-flush valve 21 comprises an outer housing 21A provided with a throughgoing bore B.
  • the through-going bore B has, over a part of a length of the outer housing 21 A, a bore with first diameter bi, while the through-going bore B, over a remaining part of the length of the outer housing 21 A, will have a bore with a different and second diameter b2, where the bore with the first diameter bi is larger than the bore with the second diameter b2.
  • a transition between the bore with the first and second diameters bi, b2 is abrupt, whereby the transition will form an abutment shoulder or surface for a resilient element 21C arranged within the through-going bore B of the outer housing 21A.
  • the resilient element 21C will bias the ball 21D into engagement with an annular valve seat element 21B which is fixedly connected to the part of the outer housing 21 A provided with the bore with the first (and larger) diameter bi.
  • the resilient element 21C where in this exemplary embodiment, is in the form of an annular spring, will have a diameter that is larger than the bore with the second diameter b2 of the through-going bore B of the outer housing 21A, such that the annular spring 21C will not interfere the flow of the fluid out through the dispensing tube 11 when the wash bottle 1 is squeezed by a user.
  • the ball 21D will have a larger diameter than a diameter of the opening provided in the annular ring 21Bi forming the valve seat of the annular valve seat element 21B.
  • the annular valve seat element 21B comprises an annular ring 21Bi forming the valve seat for the ball 21D and in this exemplary embodiment four legs 2IB 2 extend out from the annular ring 21Bi, the legs 2IB 2 forming a lower part of the valve seat, where the legs 2IB 2 are displaced 45 degrees relative each other.
  • An end of the annular ring 21Bi which is to be in contact with the ball 21D, is provided with a beveled edge 2IB 3 , such that the ball 21D can be seated between the legs 2IB 2.
  • the annular valve seat element 2 IB could comprise another number of legs, for instance three, five, six etc.
  • An outer diameter of the annular valve seat element 2 IB is substantially the same as an inner diameter of the bore of the dispensing tube 1 1, whereby the back-flush valve 21 is connected to the second end 1 IB of the dispensing tube 11 by pushing the legs 2IB 2 into the bore of the dispensing tube 11.
  • guiding elements 2IB 4 are arranged within the through-going bore B of the outer housing 21 A, where the guiding elements 2IB 4 will support and guide the ball 21D when the ball 2 ID is moved in an axial direction of the back-flush valve 21.
  • Figures 2A-2C show a second exemplary embodiment of a wash bottle 1 for storing and dispensing liquid, chemicals or solvents
  • the wash bottle 1 comprises a bottle body 2 having flexible sidewalls 3 defining an interior reservoir 4 for storing the liquid, chemicals or solvents.
  • the bottle body 2 has an open end 5 for providing access to the interior reservoir 4.
  • the open end 5 includes a neck portion 6, where the neck portion 6 around an outer surface is provided with a threaded portion 7.
  • a closure 8 in form of a screw cap provided with cooperating threads 9 around an inner surface of the screw cap 8 may be screwed onto the neck portion 6 of the wash bottle 1 in order to“close” the wash bottle 1 for storing and dispensing liquid, chemicals or solvents.
  • the screw cap 8 is provided with a through-going opening 10, such that a dispensing tube 11 can extend through the screw cap 8 and into the interior reservoir 4 of the wash bottle 1.
  • the dispensing tube 11 and screw cap 8 may be separate parts that are connected to each other to form an air and watertight connection between the screw cap 8 and dispensing tube 11.
  • the dispensing tube 11 could be integrated into the screw cap 8.
  • the dispensing tube 11 is configured such that a first end 1 1 A of the dispensing tube 11 extends to the bottom-most portion of the interior reservoir 4, but it can be envisaged that the dispensing tube 11 may alternatively extend to a position immediately inside the screw cap 8 or to any position between the bottom-most portion of the wash bottle 1 and the interior side of the bottle body 2. Furthermore, in the exemplary embodiment shown in figure 2A, the portion of the dispensing tube 11 extending exteriorly of the wash bottle 1 and screw cap 8 is bent to facilitate direction fluid dispensed from the wash bottle 1 to a desired location.
  • a back-flush valve 22 is shown in figure 2B, where the back-flush valve 22 is connected to the first end 11 A of the dispensing tube 11, this end 1 1 A being in communication with the interior reservoir 4 of the wash bottle 1.
  • the back-flush valve 22 comprises a housing 22A provided with a through-going bore B, where one end of the housing 22A forms an annular valve seat 22D for a ball 22C arranged within the through-going bore B, where a resilient element 22B in the form of an annular spring, also arranged within the through-going bore B, will bias the ball 22C into engagement with the annular valve seat 22D.
  • an opposite end of the housing 22A is closed with a plate element 22E provided with a central opening (not shown).
  • the annular valve seat 22D is then provided with a beveled edge, such that the ball 22C can be seated in the annular valve seat 22D.
  • the annular spring 22B will have a diameter that is larger than the central opening provided in the plate element 22E in order not to interfere the flow of the fluid out through the dispensing tube 11 when the wash bottle 1 is squeezed by a user.
  • the ball 22C will have a larger diameter than a diameter of the opening provided in the annular valve seat 22D.
  • Figure 2C shows an alternative embodiment of the back-flush valve 23 according to figure 2B, where the back-flush valve 23 in this embodiment further comprises at least three rails (not shown) arranged within the through-going bore B.
  • the rails will guide the ball 23C in an axial direction of the housing 23 and are displaced equally relative each other around the ball 23 C.
  • FIG. 2D shows yet an alternative embodiment of the back-flush valve 24 according to figures 2B-2C, where the back-flush valve 24 in this embodiment comprises a housing 24A provided with a throughgoing bore B, where the housing 24A extends into an enlarged portion 24B.
  • a bottom 24C of the enlarged portion 24B is provided with a central opening 24D.
  • a membrane 24E is arranged to cover the central opening 24D.
  • the membrane 24E is in appropriate ways connected to the bottom 24C of the enlarged portion 24B through a pin 24F.
  • Figure 2E shows that four guiding elements 22F are arranged within the through- going bore B of the housing 22A of the back-flush valve 22 according to figure 2B, where the guiding elements 22F will support and guide the ball 2 ID when the ball 2 ID is moved in an axial direction of the back-flush valve 22.
  • Figure 3 A shows a third exemplary embodiment of a wash bottle 1 for storing and dispensing liquid, chemicals or solvents
  • the wash bottle 1 comprises a bottle body 2 having flexible sidewalls 3 defining an interior reservoir 4 for storing a liquid, chemicals or solvents.
  • the bottle body 2 has an open end 5 for providing access to the interior reservoir 4.
  • the open end 5 includes a neck portion 6, where the neck portion 6 around an outer surface is provided with a threaded portion 7.
  • a closure 8 in form of a screw cap 8- provided with cooperating threads 9 around an inner surface of the screw cap 8 may be screwed onto the neck portion 6 of the wash bottle 1 in order to“close” the wash bottle 1 for storing and dispensing the liquid, chemicals or solvents.
  • the screw cap 8 is provided with a through-going opening 10, such that a dispensing tube 11 can extend through the screw cap 8 and into the interior reservoir 4 of the wash bottle 1.
  • the dispensing tube 11 and screw cap 8 may be separate parts that are connected to each other to form an air- and watertight connection between the screw cap 8 and dispensing tube 1 1.
  • the dispensing tube 11 could be integrated into the screw cap 8.
  • the dispensing tube 11 is configured such that a first end 11 A of the dispensing tube 11 extends to the bottom-most portion G of the interior reservoir 4, but it can be envisaged that the dispensing tube 11 may alternatively extend to a position immediately inside the screw cap 8 or to any position between the bottom-most portion of the wash bottle 1 and the interior side of the bottle body 2.
  • the portion of the dispensing tube 1 1 extending exteriorly of the wash bottle 1 and screw cap 8 are bent to facilitate direction fluid dispensed from the wash bottle 1 to a desired location.
  • a back-flush valve 22 shown in figure 3B is connected to the dispensing tube 11 at an arbitrary position between the first and second end 1 1 A, 1 IB of the dispensing tube 11, the first end 11 A being in communication with the interior reservoir 4 of the wash bottle 1.
  • the back-flush valve 22 comprises a housing 22A provided with a through-going bore B, where one end of the housing 22A forms an annular valve seat 22D for a ball 22C arranged within the through-going bore B, where a resilient element 22B in the form of an annular spring, also arranged within the through- going bore B, will bias the ball 22C into arrangement with the annular valve seat 22D.
  • an opposite end of the housing 22A is closed with a plate element 22E provided with a central opening (not shown).
  • the annular valve seat 22D is then provided with a beveled edge, such that the ball 22C can be seated in the annular valve seat 22D.
  • the annular spring 22B will have a diameter that is larger than the central opening provided in the plate element 22E in order not to interfere the flow of the fluid out through the dispensing tube 11 when the wash bottle 1 is squeezed by a user.
  • the ball 22C will have a larger diameter than a diameter of the opening provided in the annular valve seat 22D.
  • Figure 3C shows an alternative embodiment of the back-flush valve 23 according to figure 3B, where the back-flush valve 23 in this embodiment further comprises at least three rails (not shown) arranged within the through-going bore B.
  • the rails will guide the ball 23C in an axial direction of the housing 23 and are displaced equally relative each other around the ball 23 C.
  • Figure 3D shows that four guiding elements 22F are arranged within the through- going bore B of the housing 22A of the back-flush valve 22 according to figure 2B, where the guiding elements 22F will support and guide the ball 2 ID when the ball 2 ID is moved in an axial direction of the back-flush valve 22.
  • Figures 4A-4C show further embodiments of the wash bottle for storing and dispensing liquid, chemicals or solvents
  • the wash bottle 1 comprises a bottle body 2 having flexible sidewalls 3 defining an interior reservoir 4 for storing a liquid, chemicals or solvents.
  • the bottle body 2 has an open end 5 for providing access to the interior reservoir 4.
  • the open end 5 includes a neck portion 6, where the neck portion 6 around an outer surface is provided with a threaded portion 7.
  • a closure 8 in form of a screw cap provided with cooperating threads 9 around an inner surface of the screw cap 8 may be screwed onto the neck portion 6 of the wash bottle 1 in order to“close” the wash bottle 1 for storing and dispensing the liquid, chemicals or solvents.
  • the flexible sidewall 3 of the bottle body 2 is provided with a throughgoing opening such that a dispensing tube 11 extends through the flexible sidewalls 3 of the bottle body 2 and into the interior reservoir 4 of the wash bottle 1.
  • the dispensing tube 1 1 is configured such that a part of the dispensing tube 1 1 extends to the bottom-most portion G of the interior reservoir 4, while a remaining part of the dispensing tube will extend outside the wash bottle 1.
  • the throughgoing opening in the flexible sidewalls 3 is provided near a bottom -most portion G of the wash bottle 1, it could be envisaged that the throughgoing opening in the flexible sidewalls 3 could be provided at any position between the bottom-most portion G and the open end 5 of the wash bottle 1
  • a portion of the dispensing tube 1 1 extending exteriorly of the wash bottle 1 and the screw cap 8 is bent to facilitate direction fluid dispensed from the wash bottle 1 to a desired location.
  • FIG 4A is illustrated that a back-flush valve 21 shown in figures IB and 1C is connected to a second end 1 IB of the dispensing tube 1 1, where the back-flush valve 21 comprises an outer housing 21 A provided with a throughgoing bore B.
  • the through-going bore B has, over a part of a length of the outer housing 21 A, a bore with first diameter bi, while the through-going bore B, over a remaining part of the length of the outer housing 21 A, will have a bore with a different and second diameter b 2 , where the bore with the first diameter bi is larger than the bore with the second diameter b 2.
  • a transition between the bore with the first and second diameters bi, b 2 is abrupt, whereby the transition will form an abutment shoulder or surface for a resilient element 21C arranged within the through-going bore B of the outer housing 21 A.
  • the resilient element 21C will bias the ball 21D into engagement with an annular valve seat element 21B which is fixedly connected to the part of the outer housing 21 A provided with the bore with the first (and larger) diameter bi.
  • the resilient element 21C where in this exemplary embodiment, is in the form of an annular spring, will have a diameter that is larger than the bore with the second diameter b 2 of the through-going bore B of the outer housing 21A, such that the annular spring 21C will not interfere the flow of the fluid out through the dispensing tube 11 when the wash bottle 1 is squeezed by a user.
  • the ball 21D will have a larger diameter than a diameter of the opening provided in the annular ring 21Bi forming the valve seat of the annular valve seat element 21B.
  • the annular valve seat element 21B comprises an annular ring 21Bi forming the valve seat for the ball 21D and in this exemplary embodiment four legs 2IB 2 extend out from the annular ring 21Bi, the legs 21Bi forming a lower part of the valve seat, where the legs 2IB 2 are displaced 45 degrees relative each other.
  • An end of the annular ring 21Bi which is to be in contact with the ball 21D is provided with a beveled edge 2IB 3 , such that the ball 21D can be seated between the legs 2IB 2.
  • the annular valve seat element 2 IB could comprise another number of legs, for instance three, five, six etc.
  • An outer diameter of the annular valve seat element 2 IB is substantially the same as an inner diameter of the bore of the dispensing tube 1 1, whereby the back-flush valve 21 is connected to the second end 1 IB of the dispensing tube 11 by pushing the legs 2IB2 into the bore of the dispensing tube 11.
  • guiding elements 2IB4 are arranged within the through-going bore B of the outer housing 21 A, where the guiding elements 2IB4 will support and guide the ball 21D when the ball 2 ID is moved in an axial direction of the back-flush valve 21.
  • a back-flush valve 22 shown in figure 2B is connected to a first end 1 1 A of the dispensing tube 11, this end 1 1 A being in communication with the interior reservoir 4 of the wash bottle 1.
  • the back-flush valve 22 comprises a housing 22A provided with a through-going bore B, where one end of the housing 22A forms an annular valve seat 22D for a ball 22C arranged within the through-going bore B, where a resilient element 22B in the form of an annular spring, also arranged within the through-going bore B, will bias the ball 22C into arrangement with the annular valve seat 22D.
  • an opposite end of the housing 22A is closed with a plate element 22E provided with a central opening (not shown).
  • the annular valve seat 22D is then provided with a beveled edge, such that the ball 22C can be seated in the annular valve seat 22D.
  • the annular spring 22B will have a diameter that is larger than the central opening provided in the plate element 22E in order not to interfere the flow of the fluid out through the dispensing tube 11 when the wash bottle 1 is squeezed by a user.
  • the ball 22C will have a larger diameter than a diameter of the opening provided in the annular valve seat 22D.
  • Figure 2C shows an alternative embodiment of the back-flush valve 23 according to figure 2B, the back-flush valve 23 being connected to the first end 11 A of the dispensing tube 11, where the back-flush valve 23 in this embodiment further comprises at least three rails (not shown) arranged within the through-going bore B.
  • the rails will guide the ball 23 C in an axial direction of the housing 23 and are displaced equally relative each other around the ball 23C.
  • FIG. 2D shows yet an alternative embodiment of the back-flush valve 24 according to figures 2B-2C, the back-flush valve 24 being connected to the first end 11 A of the dispensing tube 11, where the back-flush valve 24 in this embodiment comprises a housing 24A provided with a throughgoing bore B, where the housing 24 A extends into an enlarged portion 24B.
  • a bottom 24C of the enlarged portion 24B is provided with a central opening 24D.
  • a membrane 24E is arranged to cover the central opening 24D.
  • the membrane 24E is in appropriate ways connected to the bottom 24C of the enlarged portion 24B through a pin 24F.
  • Figure 2E shows that four guiding elements 22F are arranged within the through- going bore B of the housing 22A of the back-flush valve 22 according to figure 2B, where the guiding elements 22F will support and guide the ball 2 ID when the ball 2 ID is moved in an axial direction of the back-flush valve 22.
  • a back-flush valve 22 shown in figure 2B is connected to the dispensing tube 1 1 at an arbitrary position between the first and second end 11 A, 1 IB of the dispensing tube 11, the first end 11 A being in communication with the interior reservoir 4 of the wash bottle 1.
  • the back-flush valve 22 comprises a housing 22A provided with a through-going bore B, where one end of the housing 22A forms an annular valve seat 22D for a ball 22C arranged within the through-going bore B, where a resilient element 22B in the form of an annular spring, also arranged within the through-going bore B, will bias the ball 22C into arrangement with the annular valve seat 22D.
  • an opposite end of the housing 22A is closed with a plate element 22E provided with a central opening (not shown).
  • the annular valve seat 22D is then provided with a beveled edge, such that the ball 22C can be seated in the annular valve seat 22D.
  • the annular spring 22B will have a diameter that is larger than the central opening provided in the plate element 22E in order not to interfere the flow of the fluid out through the dispensing tube 11 when the wash bottle 1 is squeezed by a user.
  • the ball 22C will have a larger diameter than a diameter of the opening provided in the annular valve seat 22D.
  • Figure 2C shows an alternative embodiment of the back-flush valve 23 according to figure 3B, the back-flush valve 23 being connected to the dispensing tube 11 at an arbitrary position between the first and second end 11 A, 1 IB of the dispensing tube 11, where the back-flush valve 23 in this embodiment further comprises at least three rails (not shown) arranged within the through-going bore B.
  • the rails will guide the ball 23C in an axial direction of the housing 23 and are displaced equally relative each other around the ball 23 C.
  • Figure 2E shows that four guiding elements 22F are arranged within the through- going bore B of the housing 22A of the back-flush valve 22 according to figure 2B, where the guiding elements 22F will support and guide the ball 2 ID when the ball 21D is moved in an axial direction of the back-flush valve 22.
  • the wash bottle 1 may also comprise an air vent valve 32 arranged in the screw cap 8.
  • the air vent valve comprises a housing provided with one or more through-going bores and a diaphragm or membrane. The air vent valve will then be able to control a pressure differential created between an inside and an outside of the wash bottle.
  • the air vent valve will close when the wash bottle is squeezed and will therefore create an inner pressure in the wash bottle relatively fast but will not close when the inner pressure is generated slowly.
  • the air vent valve may, for instance, be a membrane valve or a bowl valve.

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Abstract

The present invention relates to a wash bottle for storing and dispensing a liquid, where the wash bottle comprises a bottle body having flexible sidewalls defining an interior reservoir and an open end providing access to the interior reservoir, a closure connected to the open end, a dispensing tube having a first end being in communication with the interior reservoir and an opposite second end being in communication with ambient air outside the wash bottle, where a back-flush valve is connected to at least one of the first and second ends of the dispensing tube, or the back flush valve is arranged arbitrary between the first and second end of the dispensing tube and where a vent valve is provided in the closure.

Description

A WASH BOTTLE
The present invention relates to containers for storing and dispensing liquids, and more particularly the present invention relates to a wash bottle for storing and dispensing chemicals or solvents.
So-called wash bottles produced or manufactured from flexible materials are standard equipment in laboratories and similar environments, where the flexible wash bottle permits dispensing of the liquid content(s) by squeezing the wash bottle. Typically, such wash bottles comprise a squeezable container having a flexible and resilient sidewall and a discharge tube extending from within the wash bottle and to an outside of the wash bottle. The discharge tube that extends outside the wash bottle may be bent to facilitate directing the stream of liquid to a desired area.
So-called wash bottles produced or manufactured from one or more flexible materials have found wide-spread use in laboratories of universities, scientific research institutions in the chemical, pharmaceutical, food, geological,
metallurgical and similar environments, where the wash bottle, for instance, may be used to rinse experimental containers and solutions with distilled water or the like, where the flexible construction of the wash bottle permits dispensing of liquid content(s) by squeezing the wash bottle.
Typically, such wash bottles comprise a squeezable bottle body having a flexible and resilient sidewall and a discharge tube extending from within the wash bottle and to an outside of the wash bottle. The discharge tube that extends outside the wash bottle is often bent to facilitate directing the stream of liquid towards a desired surface or area.
However, there are some inconveniences using a wash bottle for more sophisticated operations, for instance, when small amounts of (powdery) chemicals are to be transferred from a weighing sheet and into a bottle or a material is to be loaded onto a chromatography column. When relaxing the pressure on the wash bottle, the liquid content(s) contained in the discharge tube will run back through the discharge tube and into the wash bottle, resulting in that the discharge tube is partly or even fully filled with air.
If the wash bottle is then to be used, for example, to flush or wash away powdery chemicals from e.g. a weighing sheet and into a container, firstly the air will be blown out of the discharge tube, where this air might blow away, at least a small amount of the powdery chemicals. This will create an accuracy and convenience problem in e.g. analytical and preparative chemistry. Another problem that may occur, is when the wash bottle is lifted from a surface by a user, as the discharge tube of the wash bottle then may drop out liquid when the wash bottle is grabbed, as little pressure is sufficient to press or squeeze out some liquid from the wash bottle.
Furthermore, sometimes the wash bottles are used to store volatile, aggressive or high-purity materials, such as solvents and chemicals. As the volatile liquids form vapors, a pressure differential may be created between an inside and an outside of the wash bottle body, which may result in the volatile liquid in the wash bottle flowing through the discharge tube in order to equalize the pressure inside and outside the wash bottle.
If the wash bottle or discharge tube is not closed, this may also result in the content in the wash bottle may leak out from the wash bottle if the wash bottle tips over. Such an open wash bottle or discharge tube may also result in moisture from ambient air may mix with the high-purity materials contained in the wash bottle, whereby the quality and characteristics of the material may be affected.
US 4.557.401 relates to a control unit for a squeeze type fluid container, where the control unit is attached to a tube extending from inside the container to the outside. The control unit has a check valve resiliently held to open in response to pressure inside the container; which permits fluid to flow through the control unit and out the tube. The control valve has a second check valve positioned inside the first check valve casing, and resiliently held to open in response to a negative pressure inside the container to permit fluid to flow from the tube through the control unit and back into the container.
US 2004/173636 A1 relates to a bottle for storing, identifying, and dispensing liquids, where the bottle comprises a valve-type nozzle coupled to the outer end of the tube, a vent, and an optional identification tag. The valve-type nozzle is adjustable along a continuous range between open and closed conditions to permit dispensing of fluid in a controlled fashion and sealing of the container.
US 8.322.578 B2 relates to a one-way valve for the recontamination-protected repeated discharge of a flowable material from a container of a preferably reducible volume, where the one-way valve contains a valve seat which consists of a rigid plastic material and which is arranged in the container neck and comprises a base body which rests on the inner wall of the container neck and contains at least one through hole, and a projection which extends in axial direction of the container neck towards the exit opening. The valve seat has arranged thereabove an elastic seal which comprises an annular section covering the at least one through hole, and a sleeve-like section which surrounds the projection at a radial distance with the exception of its end section which in the closed state of the one-way valve rests in the exit opening on the end section of the projection. A sterilization element of silver or of another metal having an oligodynamic action may be arranged in the intermediate space between the projection of the valve seat and the elastic seal. The application of pressure to the contents of the container has the effect that the annular section of the seal releases the at least one through hole of the valve seat, the end section of the sleeve-like part of the seal exiting from the exit opening and releasing the same. The seal will then return into the initial state. The contents of the container are safely sealed against the ingress of contaminants.
JP 2010179954 A relates to a pure water feeding container including a plastic-made container body with a top opening; a freely attachable/detachable lid fitted airtightly on the top opening; a pure water feeding tube penetrating through the lid and extending into an inside of the container body; and a water pouring opening fitted to the upper part of the lid and connected with the upper end of the pure water feeding tube. In this pure water feeding container, at a position upper further than the pure water storing part of the cylindrical wall part, a filter for filtering fine particles in air is mounted, and a check valve for inhibiting a reverse flow is provided on the feeding tube, and a check valve for preventing clean air in the container from flowing out is provided in the passage with the filter.
CN 202683243 U relates to a plastic washing bottle for a laboratory, where the washing bottle comprises a plastic washing bottle body, a nozzle pipeline is connected to a bottle cover of the plastic washing bottle body, a one-way water outlet valve is mounted on the nozzle pipeline, an air return pipe is further mounted on the bottle cover, a lower pipe opening of the air return pipe is located above the liquid level of the plastic washing bottle body, and a one-way air inlet valve is mounted on the air return pipe. The air return pipe is arranged on the plastic washing bottle body, the one-way air inlet valve is arranged on the air return pipe, the one-way water outlet valve is arranged on the nozzle pipeline, so that under the action of the one-way valves, discharged water passes through the nozzle pipeline and returned air passes through the air return pipe.
The object of the present invention is to provide a wash bottle for storing and dispensing chemicals or solvents, where the wash bottle minimizes or alleviates one or more of the disadvantages of the prior art, or at least provides a useful
alternative.
The present invention relates to a wash bottle for storing and dispensing a liquid, where the wash bottle comprises a bottle body having flexible sidewalls defining an interior reservoir in the wash bottle and an open end providing access to the interior reservoir, a closure connected to the open end, a dispensing tube having a first end being in communication with the interior reservoir and an opposite second end being in communication with ambient air outside the wash bottle, and where a back- flush valve is connected to at least one of the first and second ends of the dispensing tube, or the back flush valve is being arranged arbitrary between the first and second end of the dispensing tube and where an air vent valve is provided in the closure.
The wash bottle is preferably of a clear plastic to permit viewing the fluid level inside the wash bottle.
A portion of the dispensing tube extending exteriorly of the wash bottle may be bent to facilitate directing fluid dispensed from the wash bottle to a desired location.
In one embodiment the open end of the wash bottle includes a neck portion, where the neck portion around an outer surface, over at least a part of the neck portion’s length, is provided with threads. The closure, in the form of a screw cap, may then, around an inner surface, be provided with complementary threads, such that the wash bottle can be closed and opened.
The screw cap may then be provided with a through-going opening, such that the dispensing tube can be guided through the screw cap and into the interior reservoir of the wash bottle.
However, it could also be envisaged that the neck portion of the wash bottle may be provided with one or more protrusions in the form of a rib or the like around an outer periphery of the neck portion. The closure, in the form of a pressure lid, may then be provided with one or more complementary grooves or recesses around an inner periphery of the pressure lid. The pressure lid may then be provided with a through-going opening, such that the dispensing tube can be guided through the pressure lid and into the interior reservoir of the wash bottle.
It could also be envisaged that the dispensing tube could be guided through the flexible sidewalls of the bottle body, whereby the flexible sidewalls could be provided with a through-going opening for leadthrough of the dispensing tube. A part of the dispensing tube will then extend into the interior reservoir of the wash bottle, while a remaining part of the dispensing tube will extend outside the wash bottle.
According to one aspect of the present invention, the flush-back valve may comprise an outer housing provided with a through-going bore, where the through- going bore over a part of the outer housing’s length will have a larger diameter, and over a remaining part of the outer housing’s length will have a smaller diameter.
The transition between the larger diameter and the smaller diameter will form an abutment shoulder for a resilient element arranged within the through-going bore of the outer housing, where the resilient element will bias a ball also arranged within the through-going bore of the outer housing into engagement with an annular valve seat element fixedly connected to the part of the outer housing provided with the larger diameter bore.
The part of the outer housing being provided with the smaller diameter bore may have a tapered form.
The annular valve seat element which is fixedly connected to the outer housing comprises an annular ring having a smaller diameter than a diameter of the ball and at least three legs extending out from the annular ring, where the legs are displaced equally relative each other around a periphery of the annular ring.
According to another aspect of the present invention, the back-flush valve may comprise a housing provided with a through-going bore, where a resilient element and a ball are arranged within the through-going bore, and where one end of the housing forms an annular valve seat for the ball and an opposite end of the housing is closed with a plate element, where the plate element forms an abutment surface for the resilient element. An opening (and thereby also a closing) of the back-flush valve will depend on how stiff the resilient element is, whereby a back-flush valve comprising a resilient element with higher stiffness will be more difficult to open than a back-flush valve comprising a resilient element with lower stiffness.
Such a back-flush valve will, due to the stiffness of the resilient element, close when the pressure on the wash bottle is removed, whereby the liquid will remain in the discharge tube, without allowing the discharge tube to be filled partly or completely filled with air. Furthermore, such a back-flush valve will also not open before the pressure on the wash bottle exceeds a certain limit value or“opening pressure”, whereby this will prevent accidental spill when the wash bottle is grabbed and dropped.
In one alternative embodiment of the back-flush valve may further comprise at least three rails or guiding elements arranged within the through-going bore, where the rails or guiding elements are arranged equally displaced relative each other around the ball.
According to an aspect of the present invention, the air vent valve may comprise a housing provided with one or more through-going bores and a diaphragm or membrane, where the air vent valve may control a pressure differential created between an inside and an outside of the wash bottle. The air vent valve will then close when the wash bottle is squeezed and will therefore create an inner pressure in the wash bottle relatively quickly but will not close when the inner pressure is generated slowly. The air vent valve may, for instance, be a membrane valve or a bowl valve.
Further objects, structural embodiments and advantages of the present invention will be seen clearly from the following detailed description, the attached drawings and the claims below.
The invention will now be described with reference to the attached figures, wherein:
Figure 1 A shows in a schematic way a first embodiment of a wash bottle for storing and dispensing liquid, chemicals or solvents according to the present invention,
Figure IB shows a back-flush valve arranged in a discharge tube of the wash bottle,
Figure 1C shows further details of the back-flush valve according to figure IB, seen from above,
Figure 2A shows in a schematic way a second embodiment of the wash bottle for storing and dispensing liquid, chemicals or solvents according to figures 1 A-1B,
Figures 2B-2D show different embodiments of a back flush valve arranged in the discharge tube of the wash bottle,
Figure 2E shows further details of the back-flush valve according to figure 2B, seen from above,
Figure 3 A shows in a schematic way a third embodiment of the wash bottle for storing and dispensing liquid, chemicals or solvents according to figure 1 A- IB,
Figures 3B-3D show different embodiments of a back flush valve arranged in the discharge tube of the wash bottle, and
Figures 4A-4C show in a schematic way further embodiments of the wash bottle for storing and dispensing liquid, chemicals or solvents according to figures 1 A-1B.
Figures 1A-1C show a first exemplary embodiment of a wash bottle 1 for storing and dispensing liquid, chemicals or solvents, where the wash bottle 1 comprises a bottle body 2 having flexible sidewalls 3 defining an interior reservoir 4 for storing a liquid, chemicals or solvents. The bottle body 2 has an open end 5 for providing access to the interior reservoir 4. The open end 5 includes a neck portion 6, where the neck portion 6 around an outer surface is provided with a threaded portion 7. A closure 8 in form of a screw cap provided with cooperating threads 9 around an inner surface of the screw cap 8 may be screwed onto the neck portion 6 of the wash bottle 1 in order to“close” the wash bottle 1 for storing and dispensing the liquid, chemicals or solvents. The screw cap 8 is provided with a through-going opening 10, such that a dispensing tube 11 can extend through the screw cap 8 and into the interior reservoir 4 of the wash bottle 1. The dispensing tube 11 and screw cap 8 may be separate parts that are connected to each other to form an air- and watertight connection between the screw cap 8 and dispensing tube 1 1. However, it could also be envisaged that the dispensing tube 11 could be integrated into the screw cap 8.
In the exemplary embodiment shown in figure 1, the dispensing tube 11 is configured such that a first end 1 1 A of the dispensing tube 11 extends to the bottom-most portion G of the interior reservoir 4, but it can be envisaged that the dispensing tube 11 may alternatively extend to a position immediately inside the screw cap 8 or to any position between the bottom-most portion of the wash bottle 1 and the interior side of the bottle body 2.
Furthermore, in the exemplary embodiment shown in figure 1, the portion of the dispensing tube 11 extending exteriorly of the wash bottle 1 and screw cap 8 is bent to facilitate direction fluid dispensed from the wash bottle 1 to a desired location.
A back-flush valve 21 is connected to a second end 1 IB of the dispensing tube 11, where back-flush valve 21 comprises an outer housing 21A provided with a throughgoing bore B. The through-going bore B has, over a part of a length of the outer housing 21 A, a bore with first diameter bi, while the through-going bore B, over a remaining part of the length of the outer housing 21 A, will have a bore with a different and second diameter b2, where the bore with the first diameter bi is larger than the bore with the second diameter b2.
A transition between the bore with the first and second diameters bi, b2 is abrupt, whereby the transition will form an abutment shoulder or surface for a resilient element 21C arranged within the through-going bore B of the outer housing 21A. When a ball 21D is arranged within the through-going bore B, the resilient element 21C will bias the ball 21D into engagement with an annular valve seat element 21B which is fixedly connected to the part of the outer housing 21 A provided with the bore with the first (and larger) diameter bi.
The resilient element 21C, where in this exemplary embodiment, is in the form of an annular spring, will have a diameter that is larger than the bore with the second diameter b2 of the through-going bore B of the outer housing 21A, such that the annular spring 21C will not interfere the flow of the fluid out through the dispensing tube 11 when the wash bottle 1 is squeezed by a user.
The ball 21D will have a larger diameter than a diameter of the opening provided in the annular ring 21Bi forming the valve seat of the annular valve seat element 21B. The annular valve seat element 21B comprises an annular ring 21Bi forming the valve seat for the ball 21D and in this exemplary embodiment four legs 2IB2 extend out from the annular ring 21Bi, the legs 2IB2 forming a lower part of the valve seat, where the legs 2IB2 are displaced 45 degrees relative each other. An end of the annular ring 21Bi which is to be in contact with the ball 21D, is provided with a beveled edge 2IB3, such that the ball 21D can be seated between the legs 2IB2. A person skilled in the art would understand that the annular valve seat element 2 IB could comprise another number of legs, for instance three, five, six etc.
An outer diameter of the annular valve seat element 2 IB is substantially the same as an inner diameter of the bore of the dispensing tube 1 1, whereby the back-flush valve 21 is connected to the second end 1 IB of the dispensing tube 11 by pushing the legs 2IB2 into the bore of the dispensing tube 11.
Furthermore, as shown in figure 1C, in this exemplary embodiment four guiding elements 2IB4 are arranged within the through-going bore B of the outer housing 21 A, where the guiding elements 2IB4 will support and guide the ball 21D when the ball 2 ID is moved in an axial direction of the back-flush valve 21.
Figures 2A-2C show a second exemplary embodiment of a wash bottle 1 for storing and dispensing liquid, chemicals or solvents, where the wash bottle 1 comprises a bottle body 2 having flexible sidewalls 3 defining an interior reservoir 4 for storing the liquid, chemicals or solvents. The bottle body 2 has an open end 5 for providing access to the interior reservoir 4. The open end 5 includes a neck portion 6, where the neck portion 6 around an outer surface is provided with a threaded portion 7. A closure 8 in form of a screw cap provided with cooperating threads 9 around an inner surface of the screw cap 8 may be screwed onto the neck portion 6 of the wash bottle 1 in order to“close” the wash bottle 1 for storing and dispensing liquid, chemicals or solvents.
The screw cap 8 is provided with a through-going opening 10, such that a dispensing tube 11 can extend through the screw cap 8 and into the interior reservoir 4 of the wash bottle 1. The dispensing tube 11 and screw cap 8 may be separate parts that are connected to each other to form an air and watertight connection between the screw cap 8 and dispensing tube 11. However, it could also be envisaged that the dispensing tube 11 could be integrated into the screw cap 8.
In the exemplary embodiment shown in figure 1, the dispensing tube 11 is configured such that a first end 1 1 A of the dispensing tube 11 extends to the bottom-most portion of the interior reservoir 4, but it can be envisaged that the dispensing tube 11 may alternatively extend to a position immediately inside the screw cap 8 or to any position between the bottom-most portion of the wash bottle 1 and the interior side of the bottle body 2. Furthermore, in the exemplary embodiment shown in figure 2A, the portion of the dispensing tube 11 extending exteriorly of the wash bottle 1 and screw cap 8 is bent to facilitate direction fluid dispensed from the wash bottle 1 to a desired location.
A back-flush valve 22 is shown in figure 2B, where the back-flush valve 22 is connected to the first end 11 A of the dispensing tube 11, this end 1 1 A being in communication with the interior reservoir 4 of the wash bottle 1. The back-flush valve 22 comprises a housing 22A provided with a through-going bore B, where one end of the housing 22A forms an annular valve seat 22D for a ball 22C arranged within the through-going bore B, where a resilient element 22B in the form of an annular spring, also arranged within the through-going bore B, will bias the ball 22C into engagement with the annular valve seat 22D. To obtain this, an opposite end of the housing 22A is closed with a plate element 22E provided with a central opening (not shown). The annular valve seat 22D is then provided with a beveled edge, such that the ball 22C can be seated in the annular valve seat 22D.
The annular spring 22B will have a diameter that is larger than the central opening provided in the plate element 22E in order not to interfere the flow of the fluid out through the dispensing tube 11 when the wash bottle 1 is squeezed by a user.
The ball 22C will have a larger diameter than a diameter of the opening provided in the annular valve seat 22D.
Figure 2C shows an alternative embodiment of the back-flush valve 23 according to figure 2B, where the back-flush valve 23 in this embodiment further comprises at least three rails (not shown) arranged within the through-going bore B. The rails will guide the ball 23C in an axial direction of the housing 23 and are displaced equally relative each other around the ball 23 C.
Figure 2D shows yet an alternative embodiment of the back-flush valve 24 according to figures 2B-2C, where the back-flush valve 24 in this embodiment comprises a housing 24A provided with a throughgoing bore B, where the housing 24A extends into an enlarged portion 24B. A bottom 24C of the enlarged portion 24B is provided with a central opening 24D. When the back-flush valve 24 is assembled, a membrane 24E is arranged to cover the central opening 24D. The membrane 24E is in appropriate ways connected to the bottom 24C of the enlarged portion 24B through a pin 24F.
Figure 2E shows that four guiding elements 22F are arranged within the through- going bore B of the housing 22A of the back-flush valve 22 according to figure 2B, where the guiding elements 22F will support and guide the ball 2 ID when the ball 2 ID is moved in an axial direction of the back-flush valve 22. Through use of the back-flush valve it is obtained that the dispensing tube 11 is always filled with a liquid contained in the wash bottle 1, because no air is soaked into the dispensing tube 1 1 when the pressure on the wash bottle 1 is removed, this preventing“blow away” of powdery chemicals when the wash bottle is to be used again, and also preventing accidental spill of hazardous or flammable liquids.
Figure 3 A shows a third exemplary embodiment of a wash bottle 1 for storing and dispensing liquid, chemicals or solvents, where the wash bottle 1 comprises a bottle body 2 having flexible sidewalls 3 defining an interior reservoir 4 for storing a liquid, chemicals or solvents. The bottle body 2 has an open end 5 for providing access to the interior reservoir 4. The open end 5 includes a neck portion 6, where the neck portion 6 around an outer surface is provided with a threaded portion 7. A closure 8 in form of a screw cap 8- provided with cooperating threads 9 around an inner surface of the screw cap 8 may be screwed onto the neck portion 6 of the wash bottle 1 in order to“close” the wash bottle 1 for storing and dispensing the liquid, chemicals or solvents.
The screw cap 8 is provided with a through-going opening 10, such that a dispensing tube 11 can extend through the screw cap 8 and into the interior reservoir 4 of the wash bottle 1. The dispensing tube 11 and screw cap 8 may be separate parts that are connected to each other to form an air- and watertight connection between the screw cap 8 and dispensing tube 1 1. However, it could also be envisaged that the dispensing tube 11 could be integrated into the screw cap 8.
In this exemplary embodiment, the dispensing tube 11 is configured such that a first end 11 A of the dispensing tube 11 extends to the bottom-most portion G of the interior reservoir 4, but it can be envisaged that the dispensing tube 11 may alternatively extend to a position immediately inside the screw cap 8 or to any position between the bottom-most portion of the wash bottle 1 and the interior side of the bottle body 2.
Furthermore, the portion of the dispensing tube 1 1 extending exteriorly of the wash bottle 1 and screw cap 8 are bent to facilitate direction fluid dispensed from the wash bottle 1 to a desired location.
A back-flush valve 22 shown in figure 3B, is connected to the dispensing tube 11 at an arbitrary position between the first and second end 1 1 A, 1 IB of the dispensing tube 11, the first end 11 A being in communication with the interior reservoir 4 of the wash bottle 1. The back-flush valve 22 comprises a housing 22A provided with a through-going bore B, where one end of the housing 22A forms an annular valve seat 22D for a ball 22C arranged within the through-going bore B, where a resilient element 22B in the form of an annular spring, also arranged within the through- going bore B, will bias the ball 22C into arrangement with the annular valve seat 22D. To obtain this, an opposite end of the housing 22A is closed with a plate element 22E provided with a central opening (not shown). The annular valve seat 22D is then provided with a beveled edge, such that the ball 22C can be seated in the annular valve seat 22D.
The annular spring 22B will have a diameter that is larger than the central opening provided in the plate element 22E in order not to interfere the flow of the fluid out through the dispensing tube 11 when the wash bottle 1 is squeezed by a user.
The ball 22C will have a larger diameter than a diameter of the opening provided in the annular valve seat 22D.
Figure 3C shows an alternative embodiment of the back-flush valve 23 according to figure 3B, where the back-flush valve 23 in this embodiment further comprises at least three rails (not shown) arranged within the through-going bore B. The rails will guide the ball 23C in an axial direction of the housing 23 and are displaced equally relative each other around the ball 23 C.
Figure 3D shows that four guiding elements 22F are arranged within the through- going bore B of the housing 22A of the back-flush valve 22 according to figure 2B, where the guiding elements 22F will support and guide the ball 2 ID when the ball 2 ID is moved in an axial direction of the back-flush valve 22.
Figures 4A-4C show further embodiments of the wash bottle for storing and dispensing liquid, chemicals or solvents, where the wash bottle 1 comprises a bottle body 2 having flexible sidewalls 3 defining an interior reservoir 4 for storing a liquid, chemicals or solvents. The bottle body 2 has an open end 5 for providing access to the interior reservoir 4. The open end 5 includes a neck portion 6, where the neck portion 6 around an outer surface is provided with a threaded portion 7. A closure 8 in form of a screw cap provided with cooperating threads 9 around an inner surface of the screw cap 8 may be screwed onto the neck portion 6 of the wash bottle 1 in order to“close” the wash bottle 1 for storing and dispensing the liquid, chemicals or solvents.
The flexible sidewall 3 of the bottle body 2 is provided with a throughgoing opening such that a dispensing tube 11 extends through the flexible sidewalls 3 of the bottle body 2 and into the interior reservoir 4 of the wash bottle 1.
The dispensing tube 1 1 is configured such that a part of the dispensing tube 1 1 extends to the bottom-most portion G of the interior reservoir 4, while a remaining part of the dispensing tube will extend outside the wash bottle 1.
Although it is shown that the throughgoing opening in the flexible sidewalls 3 is provided near a bottom -most portion G of the wash bottle 1, it could be envisaged that the throughgoing opening in the flexible sidewalls 3 could be provided at any position between the bottom-most portion G and the open end 5 of the wash bottle 1
A portion of the dispensing tube 1 1 extending exteriorly of the wash bottle 1 and the screw cap 8 is bent to facilitate direction fluid dispensed from the wash bottle 1 to a desired location.
In figure 4A is illustrated that a back-flush valve 21 shown in figures IB and 1C is connected to a second end 1 IB of the dispensing tube 1 1, where the back-flush valve 21 comprises an outer housing 21 A provided with a throughgoing bore B. The through-going bore B has, over a part of a length of the outer housing 21 A, a bore with first diameter bi, while the through-going bore B, over a remaining part of the length of the outer housing 21 A, will have a bore with a different and second diameter b2, where the bore with the first diameter bi is larger than the bore with the second diameter b2.
A transition between the bore with the first and second diameters bi, b2 is abrupt, whereby the transition will form an abutment shoulder or surface for a resilient element 21C arranged within the through-going bore B of the outer housing 21 A. When a ball 21D is arranged within the through-going bore B, the resilient element 21C will bias the ball 21D into engagement with an annular valve seat element 21B which is fixedly connected to the part of the outer housing 21 A provided with the bore with the first (and larger) diameter bi.
The resilient element 21C, where in this exemplary embodiment, is in the form of an annular spring, will have a diameter that is larger than the bore with the second diameter b2 of the through-going bore B of the outer housing 21A, such that the annular spring 21C will not interfere the flow of the fluid out through the dispensing tube 11 when the wash bottle 1 is squeezed by a user.
The ball 21D will have a larger diameter than a diameter of the opening provided in the annular ring 21Bi forming the valve seat of the annular valve seat element 21B.
The annular valve seat element 21B comprises an annular ring 21Bi forming the valve seat for the ball 21D and in this exemplary embodiment four legs 2IB2 extend out from the annular ring 21Bi, the legs 21Bi forming a lower part of the valve seat, where the legs 2IB2 are displaced 45 degrees relative each other. An end of the annular ring 21Bi which is to be in contact with the ball 21D is provided with a beveled edge 2IB3, such that the ball 21D can be seated between the legs 2IB2. A person skilled in the art would understand that the annular valve seat element 2 IB could comprise another number of legs, for instance three, five, six etc.
An outer diameter of the annular valve seat element 2 IB is substantially the same as an inner diameter of the bore of the dispensing tube 1 1, whereby the back-flush valve 21 is connected to the second end 1 IB of the dispensing tube 11 by pushing the legs 2IB2 into the bore of the dispensing tube 11.
Furthermore, as shown in figure 1C, in this exemplary embodiment four guiding elements 2IB4 are arranged within the through-going bore B of the outer housing 21 A, where the guiding elements 2IB4 will support and guide the ball 21D when the ball 2 ID is moved in an axial direction of the back-flush valve 21.
In figure 4B is illustrated that a back-flush valve 22 shown in figure 2B is connected to a first end 1 1 A of the dispensing tube 11, this end 1 1 A being in communication with the interior reservoir 4 of the wash bottle 1. The back-flush valve 22 comprises a housing 22A provided with a through-going bore B, where one end of the housing 22A forms an annular valve seat 22D for a ball 22C arranged within the through-going bore B, where a resilient element 22B in the form of an annular spring, also arranged within the through-going bore B, will bias the ball 22C into arrangement with the annular valve seat 22D. To obtain this, an opposite end of the housing 22A is closed with a plate element 22E provided with a central opening (not shown). The annular valve seat 22D is then provided with a beveled edge, such that the ball 22C can be seated in the annular valve seat 22D.
The annular spring 22B will have a diameter that is larger than the central opening provided in the plate element 22E in order not to interfere the flow of the fluid out through the dispensing tube 11 when the wash bottle 1 is squeezed by a user.
The ball 22C will have a larger diameter than a diameter of the opening provided in the annular valve seat 22D.
Figure 2C shows an alternative embodiment of the back-flush valve 23 according to figure 2B, the back-flush valve 23 being connected to the first end 11 A of the dispensing tube 11, where the back-flush valve 23 in this embodiment further comprises at least three rails (not shown) arranged within the through-going bore B. The rails will guide the ball 23 C in an axial direction of the housing 23 and are displaced equally relative each other around the ball 23C.
Figure 2D shows yet an alternative embodiment of the back-flush valve 24 according to figures 2B-2C, the back-flush valve 24 being connected to the first end 11 A of the dispensing tube 11, where the back-flush valve 24 in this embodiment comprises a housing 24A provided with a throughgoing bore B, where the housing 24 A extends into an enlarged portion 24B. A bottom 24C of the enlarged portion 24B is provided with a central opening 24D. When the back-flush valve 24 is assembled, a membrane 24E is arranged to cover the central opening 24D. The membrane 24E is in appropriate ways connected to the bottom 24C of the enlarged portion 24B through a pin 24F. Figure 2E shows that four guiding elements 22F are arranged within the through- going bore B of the housing 22A of the back-flush valve 22 according to figure 2B, where the guiding elements 22F will support and guide the ball 2 ID when the ball 2 ID is moved in an axial direction of the back-flush valve 22.
In figure 4C is illustrated that a back-flush valve 22 shown in figure 2B, is connected to the dispensing tube 1 1 at an arbitrary position between the first and second end 11 A, 1 IB of the dispensing tube 11, the first end 11 A being in communication with the interior reservoir 4 of the wash bottle 1. The back-flush valve 22 comprises a housing 22A provided with a through-going bore B, where one end of the housing 22A forms an annular valve seat 22D for a ball 22C arranged within the through-going bore B, where a resilient element 22B in the form of an annular spring, also arranged within the through-going bore B, will bias the ball 22C into arrangement with the annular valve seat 22D. To obtain this, an opposite end of the housing 22A is closed with a plate element 22E provided with a central opening (not shown). The annular valve seat 22D is then provided with a beveled edge, such that the ball 22C can be seated in the annular valve seat 22D.
The annular spring 22B will have a diameter that is larger than the central opening provided in the plate element 22E in order not to interfere the flow of the fluid out through the dispensing tube 11 when the wash bottle 1 is squeezed by a user.
The ball 22C will have a larger diameter than a diameter of the opening provided in the annular valve seat 22D.
Figure 2C shows an alternative embodiment of the back-flush valve 23 according to figure 3B, the back-flush valve 23 being connected to the dispensing tube 11 at an arbitrary position between the first and second end 11 A, 1 IB of the dispensing tube 11, where the back-flush valve 23 in this embodiment further comprises at least three rails (not shown) arranged within the through-going bore B. The rails will guide the ball 23C in an axial direction of the housing 23 and are displaced equally relative each other around the ball 23 C.
Figure 2E shows that four guiding elements 22F are arranged within the through- going bore B of the housing 22A of the back-flush valve 22 according to figure 2B, where the guiding elements 22F will support and guide the ball 2 ID when the ball 21D is moved in an axial direction of the back-flush valve 22.
Through use of the back-flush valve in the different embodiments described above, it is obtained that the dispensing tube 11 is always filled with a liquid contained in the wash bottle 1, because no air is soaked into the dispensing tube 11 when the pressure on the wash bottle 1 is removed, this preventing“blow away” of powdery chemicals when the wash bottle is to be used again, and also preventing accidental spill of hazardous or flammable liquids. The wash bottle 1 according to the above embodiments may also comprise an air vent valve 32 arranged in the screw cap 8. The air vent valve comprises a housing provided with one or more through-going bores and a diaphragm or membrane. The air vent valve will then be able to control a pressure differential created between an inside and an outside of the wash bottle.
The air vent valve will close when the wash bottle is squeezed and will therefore create an inner pressure in the wash bottle relatively fast but will not close when the inner pressure is generated slowly. The air vent valve may, for instance, be a membrane valve or a bowl valve.
While the present invention has been illustrated by the description of the various exemplary embodiments thereof, and while the embodiments have been described in considerable detail, it is not intended to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications will readily appear to those skilled in the art. The invention in its broader aspects is therefore not limited to the specific details, representative apparatus and methods and illustrative examples shown and described. Accordingly, departures may be made from such details without departing from the scope of the invention as it is defined in the attached claims.

Claims

1. A wash bottle (1) for storing and dispensing a liquid, where the wash bottle (1) comprises a bottle body (2) having flexible sidewalls (3) defining an interior reservoir (4) and an open end (5) providing access to the interior reservoir (4), a closure (8) connected to the open end (5), a dispensing tube (11) having a first end (11 A) being in communication with the interior reservoir (4) and an opposite second end (1 IB) being in communication with ambient air outside the wash bottle (1), characterized in that a back-flush valve (21, 22, 23, 24) is connected to at least one of the first and second end (11 A, 1 IB) of the dispensing tube (11), or the back flush valve (21, 22, 23, 24) being arranged arbitrary between the first and second end
(11 A, 1 IB) of the dispensing tube (11) and where a vent valve (32) is provided in the closure (8).
2. The wash bottle (1) according to claim 1, characterized in that the closure (8) is in the form of a screw cap, a pressure lid or the like.
3. The wash bottle (1) according to claim 1, characterized in that the open end (5) includes a neck portion (6), where the neck portion (6) around an outer surface is provided with a threaded portion (7).
4. The wash bottle (1) according to claim 1, characterized in that the screw cap (8) is provided with a threaded portion (9) around an inner surface.
5. The wash bottle (1) according to one or more of the preceding claims,
characterized in that the back-flush valve (21) comprises an outer housing (21 A) provided with a through-going bore (B), a resilient element (21C) and a ball (21D) being arranged in the through-going bore (B), where an annular valve seat element (21B) is fixedly connected to one end of the outer housing (21A).
6. The wash bottle (1) according to claim 5, characterized in that one end of the outer housing (21A) has a tapered form.
7. The wash bottle (1) according to claim 5, characterized in that the annular valve seat element (21B) comprises an annular ring (21Bi) and at least three legs (2IB2) extending out from the annular ring (21Bi), the legs (21B2) being displaced equally relative each other.
8. The wash bottle (1) according to one or more of the preceding claims 1 to 4, characterized in that the back-flush valve (22, 23) comprises a housing (22A, 23A) provided with a through-going bore (B), a resilient element (22B, 23B) and a ball (22C, 23C) being arranged in the through-going bore (B), one end (22D) of the housing (22A, 23 A) forming an annular valve seat for the ball (22C) and an opposite end of the housing (22A, 23A) being closed with a plate element (22E, 23E) forming an abutment surface for the resilient element (22B, 23B).
9. The wash bottle (1) according to claim 8, characterized in that the back-flush valve (23) further comprises at least three rails (not shown) arranged within the through-going bore (B), the rails (not shown) being displaced equally relative each other around the ball (23 C).
10. The wash bottle (1) according to one or more of the preceding claims, characterized in that the dispensing tube (11) is provided with a goose-neck.
11. The wash bottle (1) according to one or more of the preceding claims 1-10, characterized in that the dispensing tube (11) extends sealingly through the closure
(8).
12. The wash bottle (1) according to one or more of the preceding claims 1-10, characterized in that the dispensing tube (11) extends sealingly through the flexible sidewalls (3).
PCT/EP2020/053565 2019-02-12 2020-02-12 A wash bottle WO2020165230A1 (en)

Applications Claiming Priority (2)

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NO20190194 2019-02-12
NO20190194 2019-02-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114931991A (en) * 2022-04-19 2022-08-23 中核核电运行管理有限公司 Multifunctional condensation collecting device

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Publication number Priority date Publication date Assignee Title
US2752199A (en) * 1954-12-09 1956-06-26 Jr Robert E Newell Dispensers of the squeeze bottle type
US3398427A (en) * 1965-08-06 1968-08-27 Nalge Company Inc Apparatus for simultaneously blow molding and compression molding plastic containers
US4557401A (en) 1981-11-23 1985-12-10 The Boeing Company Fluid container safety valve
US5301845A (en) * 1992-10-29 1994-04-12 Labonte Jean Pierre Liquid measuring and dispensing container
US20040173636A1 (en) 2003-03-07 2004-09-09 Nalge Nunc International Solvent identification bottle with adjustable dispensing feature
JP2010179954A (en) 2009-02-09 2010-08-19 Millipore Corp Pure water feeding container
US8322578B2 (en) 2002-04-19 2012-12-04 Gaplast Gmbh One-way valve for delivering a free-flowing material
CN202683243U (en) 2012-08-07 2013-01-23 贵州省烟草科学研究所 Plastic washing bottle for laboratory

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752199A (en) * 1954-12-09 1956-06-26 Jr Robert E Newell Dispensers of the squeeze bottle type
US3398427A (en) * 1965-08-06 1968-08-27 Nalge Company Inc Apparatus for simultaneously blow molding and compression molding plastic containers
US4557401A (en) 1981-11-23 1985-12-10 The Boeing Company Fluid container safety valve
US5301845A (en) * 1992-10-29 1994-04-12 Labonte Jean Pierre Liquid measuring and dispensing container
US8322578B2 (en) 2002-04-19 2012-12-04 Gaplast Gmbh One-way valve for delivering a free-flowing material
US20040173636A1 (en) 2003-03-07 2004-09-09 Nalge Nunc International Solvent identification bottle with adjustable dispensing feature
JP2010179954A (en) 2009-02-09 2010-08-19 Millipore Corp Pure water feeding container
CN202683243U (en) 2012-08-07 2013-01-23 贵州省烟草科学研究所 Plastic washing bottle for laboratory

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114931991A (en) * 2022-04-19 2022-08-23 中核核电运行管理有限公司 Multifunctional condensation collecting device
CN114931991B (en) * 2022-04-19 2024-05-10 中核核电运行管理有限公司 Multifunctional condensation collection device

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