EP0722780A2 - Spender für schäumende Flüssigkeit - Google Patents

Spender für schäumende Flüssigkeit Download PDF

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Publication number
EP0722780A2
EP0722780A2 EP95203664A EP95203664A EP0722780A2 EP 0722780 A2 EP0722780 A2 EP 0722780A2 EP 95203664 A EP95203664 A EP 95203664A EP 95203664 A EP95203664 A EP 95203664A EP 0722780 A2 EP0722780 A2 EP 0722780A2
Authority
EP
European Patent Office
Prior art keywords
liquid
foaming
discharge conduit
storage cavity
displacement fluid
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Withdrawn
Application number
EP95203664A
Other languages
English (en)
French (fr)
Other versions
EP0722780A3 (de
Inventor
Rowland William Kanner
Terry Brian Kehne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ryder International Corp
Original Assignee
Ryder International Corp
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 Ryder International Corp filed Critical Ryder International Corp
Publication of EP0722780A2 publication Critical patent/EP0722780A2/de
Publication of EP0722780A3 publication Critical patent/EP0722780A3/de
Withdrawn legal-status Critical Current

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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
    • B05B11/06—Gas or vapour producing the flow, e.g. from a compressible bulb or air pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0018—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam
    • B05B7/005—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam wherein ambient air is aspirated by a liquid flow
    • B05B7/0056—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns
    • B05B7/0062—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam wherein ambient air is aspirated by a liquid flow with disturbing means promoting mixing, e.g. balls, crowns including sieves, porous members or the like

Definitions

  • the present invention relates to liquid dispenser devices and more particularly relates to devices for foaming and dispensing foamable liquids.
  • foamable liquid dispensers particularly adapted for foaming and dispensing liquid soap are described for example in U.S. Patent Nos. 4,531,660; 4,957,218; 5,222,633; and 5,238,155. Only the latter patent 5,238,155 describes a foamable liquid dispenser capable of alternatively dispensing either foamed or unfoamed liquid, however, the multiple devices described in this patent require foam producing devices having complex construction including arrangements of partially gas permeable walls for aeration foaming of the liquid as well as either a squeeze bottle or external aeration flow lines for separate optional supply of air to foam the liquid. These disadvantages are eliminated by the foamable liquid dispensers in accordance with the present invention.
  • a liquid dispenser for selectively dispensing either foamed or unfoamed liquid, such as liquid soap includes a housing having a liquid storage cavity arranged for entry of pressurized displacement fluid; a discharge conduit in fluid communication with said liquid storage cavity to dispense the stored liquid; foaming structure for selectively producing foaming of the liquid dispensed through the discharge conduit in selectable alternative to dispensing of unfoamed liquid therethrough; and a switch structure arranged in the discharge conduit for selectively activating said liquid foaming.
  • a valve is arranged in the discharge conduit in order to selectively bleed a portion of displacing air from the head space of the liquid cavity to generate the selective foaming of the liquid.
  • a rotatable spout which prevents any leaking of the dispenser liquid during storage and handling, and an internally dislodgable sealing plug which seals an intake port connectable to the source of displacement fluid to drive displacement of the liquid in the dispensing operation.
  • Additional aspects of the invention also include a receptacle into which the dispenser is removably insertable which also provides self-aligning coupling of the displacement fluid flow passageways from the displacement fluid source into the liquid storage cavity.
  • a liquid storage container and dispenser in accordance with the present invention is generally designated by a reference character 10.
  • the dispenser bottle 10 is removably installed in a wall-mounted receptacle unit 12.
  • the receptacle 12 incorporates a source of pressurizing displacement fluid, preferably air, which is introduced into the inserted dispenser 10 to displace and dispense stored liquid from the dispenser spout 14.
  • the illustrated receptacle 12 incorporates a manually or electrically operated bellows 16 or other air pump structure which generates the air drive for the liquid dispensed, although alternative pneumatic or other displacement fluids can be employed as suited to the dispensed liquid and respective use.
  • liquid soap may be stored within replaceable dispensers 10 retained in the receptacle 12 for convenient dispensing and use for example by medical personnel.
  • the dispenser 10 enables dispensing the liquid soap as an aerated or foamed lather from the spout 14 but may also alternatively dispense the liquid soap in unfoamed condition in convenient alternative as more fully described hereinafter.
  • the dispenser 10 has a molded bottle housing wall 18 which is rigid to withstand pressurizing without distortion, and an interior cavity 20 for storage of a predetermined volume of foamable liquid L, typically liquid soap.
  • the bottle wall 18 has an opening mouth 22 which is closed by a cap structure generally designated by reference character 24.
  • the cap structure 24 includes a dip tube 26 for delivery of the liquid soap leading to the spout 14 which is also carried on the cap structure.
  • the cap structure 24 is snap-fit over the bottle mouth 22 employing respective barb joint structures 27,28 on the cap and bottleneck, in order to facilitate assembly, to prevent attempted refilling, and to promote disposability of the dispensers 10.
  • the dip tube 26 opens into a throat and seat 30 and check ball 32 forming a one-way valve structure integrated into the cap structure 24.
  • the one-way valve structure will maintain a column of liquid within the dip tube 26 as well as the tubing downstream, so that liquid is available from the spout 14 immediately upon initial pump operation.
  • the check ball valve structure 30,32 opens liquid flow from the dip tube 26 into a connecting tube 34 formed in the cap structure 24.
  • the connecting tube 34 leads liquid flow into a coupling tube structure 36 integrated into the cap structure 24.
  • the coupling tube structure 36 receives a tubular, spout adaptor elbow structure 38 which is molded to include both a vertical portion 40 and an angular portion 42.
  • the angular portion 42 enables slight incline of the dispenser spout 14 to enable residual foamed or unfoamed liquid to drain back and prevent dripping from the spout between dispensings.
  • the angular portion 42 also provides journaling of the rear portion 15 of the linearly projecting dispenser spout 14 which enables the spout to be rotatable as shown in the comparison of FIGS. 7 and 8. In FIG.
  • FIG. 8 shows the spout 14 rotated 180° relative to the orientation in FIG.
  • the spout 14 is provided with grip flanges 13 to facilitate rotation.
  • the receptacle 12 has a segmented slot structure 44 which opens through both the front and bottom of the receptacle 12 and into which the dispenser bottle 10 is inserted into operative installation and air drive connection.
  • the dispenser cap structure 24 has a protective, U-shaped guide wall 25 which not only protects the connective tubing in the cap, but also forms an orienting guide for the insertion of the cap structure 24 into the slot structure 44 for progressive, self-alignment of the air drive intake tube 46 integrated into the cap structure 24 with the air drive delivery tube 48 of the receptacle 12 from the air pump 16. The progressive insertion of the dispenser bottle 10 as shown in FIGS.
  • FIG. 3 illustrates that the insertion of the dispenser bottle 10 into the receptacle 12 in direction indicated by arrow B, is guided as aforementioned so that the projecting top of the plug 52 engages and is forced downwardly as shown in FIG. 4 against wedging ramp surface 54 which extends from the air drive connecting tube 48.
  • the sealing plug 50 has been entirely dislodged and driven from the intake tube 46 so that the plug drops into the storage cavity 20 where it may merely float upon the foamable liquid without interference in the liquid displacement operation.
  • the removal of the plug 50 fully opens the air drive flow communication between the intake tube 46 and the air drive connecting tube 48 which carries an O-ring 49 seating against the intake opening 47 to seal the drive air flow from the pump 16 into the head space of the liquid storage cavity 20 in the dispenser 10 as shown in FIG. 7.
  • the receptacle slot 44 has a medial portion 45 which includes spaced, opposing shoulder rails 56 upon which the annular lower edge 58 of the cap structure 24 is slidably supported as additionally shown in FIG. 6.
  • the height C of the slot 44 is dimensioned so that the upper edge 60 of the U-shaped wall 25 is engaged against or very slightly spaced from the overhead surface wall 62 of the slot 44 as best shown in FIG. 5, in order to insure that the top of the sealing plug 52 engages and is dislodged downwardly by the wedging ramp 54 projecting from the receptacle 12 into the slot 44.
  • activation of the air pump 16 for example, manual operation of a piston pump, produces delivery of drive air through the tubes 48 and 46 as indicated by the directional arrows D which pressurizes the head space within the liquid storage cavity 20 of the dispenser 10 which produces pressurized displacement of the foamable liquid upwardly through the dip tube 26 along the liquid flow path indicated by arrows E.
  • the liquid flow pressure maintains the unseated lift of the check ball 32 and liquid flow into the tube 34.
  • the pressurized drive air also flows across the head space 20a and upwardly along the dispenser wall 18 along the path indicated by arrows F leading to a bleed orifice 64 which is alternatively either opened or closed by a rotatable switch valve structure 66 and flow slot 68.
  • the flow slot 68 allows the pressurized air to flow therethrough into the chamber 34 resulting in turbulent air mixture with liquid flowing past the check ball 32.
  • the resulting aerated liquid foam flows from the tube 34 through a first, screen element 70 followed by a second, screen element 72 which served to fragment the aerated liquid into successively finer bubbles which are expelled along the pathway A from the spout discharge port 17.
  • the dual screen elements 70,72 can be woven or non-woven porous materials suitable to promote generation of a finely-bubbled, foamed liquid. Particularly finely-bubbled liquid soap results have been obtained using two screen elements of the same non-woven polyester obtained from Midwest Filtration Co.
  • the dual screen elements also promote bubble subdivision to accommodate variable viscosity of the soap or other liquid to be foamed.
  • the bleed valve structure 66 need only be conveniently rotated to operate as a switch to close the bleed orifice with rotation of the channel 68 to prevent air flow communication from the head space of the storage cavity 20a into the tube 34.
  • the convenient switch from dispensing either foamed or unfoamed liquid enables for example personal preferences among multiple medical personnel employing a single liquid soap dispenser.

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
EP95203664A 1995-01-20 1995-12-28 Spender für schäumende Flüssigkeit Withdrawn EP0722780A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US37563795A 1995-01-20 1995-01-20
US375637 1995-01-20

Publications (2)

Publication Number Publication Date
EP0722780A2 true EP0722780A2 (de) 1996-07-24
EP0722780A3 EP0722780A3 (de) 1997-06-25

Family

ID=23481687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95203664A Withdrawn EP0722780A3 (de) 1995-01-20 1995-12-28 Spender für schäumende Flüssigkeit

Country Status (2)

Country Link
EP (1) EP0722780A3 (de)
CA (1) CA2166441A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7780039B2 (en) 2006-04-28 2010-08-24 Buckeye International, Inc. Soap dispensing pump head with vacuum applying drip guard member
WO2010122568A1 (en) * 2009-04-22 2010-10-28 Chirag Narendrabhai Shah Bottle top dispenser with recirculating and draining mechanism
WO2012020253A3 (en) * 2010-08-11 2013-10-17 Wallgate Limited Liquid dispenser
USD742137S1 (en) 2013-03-15 2015-11-03 Buckeye International, Inc. Dispenser for dispensing cleaning solutions
USD773849S1 (en) 2015-03-13 2016-12-13 Buckeye International, Inc. Dispenser for dispensing a cleaning solution
USD784726S1 (en) 2014-12-23 2017-04-25 Buckeye International, Inc. Dispenser for dispensing cleaning solutions
USD795608S1 (en) 2015-10-12 2017-08-29 Buckeye International, Inc. Dispenser for dispensing cleaning solutions, a cover piece for a dispenser for dispensing cleaning solutions, and a portion of a dispenser for dispensing cleaning solutions
WO2022052764A1 (zh) * 2020-09-10 2022-03-17 厦门雨恋雪科技有限公司 手持按压式出液件和出皂装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04174624A (ja) * 1990-07-11 1992-06-22 Toto Ltd 水石けん供給装置
US5238155A (en) * 1991-02-11 1993-08-24 Jack W. Kaufman Foam generating device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04174624A (ja) * 1990-07-11 1992-06-22 Toto Ltd 水石けん供給装置
US5238155A (en) * 1991-02-11 1993-08-24 Jack W. Kaufman Foam generating device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7780039B2 (en) 2006-04-28 2010-08-24 Buckeye International, Inc. Soap dispensing pump head with vacuum applying drip guard member
US8505776B2 (en) 2006-04-28 2013-08-13 Scott Criswell Liquid and foamed soap dispensing
US8863989B2 (en) 2006-04-28 2014-10-21 Buckeye International, Inc. Soap dispenser including actuator with spring arm
WO2010122568A1 (en) * 2009-04-22 2010-10-28 Chirag Narendrabhai Shah Bottle top dispenser with recirculating and draining mechanism
WO2012020253A3 (en) * 2010-08-11 2013-10-17 Wallgate Limited Liquid dispenser
USD742137S1 (en) 2013-03-15 2015-11-03 Buckeye International, Inc. Dispenser for dispensing cleaning solutions
USD784726S1 (en) 2014-12-23 2017-04-25 Buckeye International, Inc. Dispenser for dispensing cleaning solutions
USD773849S1 (en) 2015-03-13 2016-12-13 Buckeye International, Inc. Dispenser for dispensing a cleaning solution
USD795608S1 (en) 2015-10-12 2017-08-29 Buckeye International, Inc. Dispenser for dispensing cleaning solutions, a cover piece for a dispenser for dispensing cleaning solutions, and a portion of a dispenser for dispensing cleaning solutions
WO2022052764A1 (zh) * 2020-09-10 2022-03-17 厦门雨恋雪科技有限公司 手持按压式出液件和出皂装置

Also Published As

Publication number Publication date
EP0722780A3 (de) 1997-06-25
CA2166441A1 (en) 1996-07-21

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