WO2000075030A1 - Clapet a mordre pour dispositif d'hydratation personnel - Google Patents

Clapet a mordre pour dispositif d'hydratation personnel Download PDF

Info

Publication number
WO2000075030A1
WO2000075030A1 PCT/US2000/015980 US0015980W WO0075030A1 WO 2000075030 A1 WO2000075030 A1 WO 2000075030A1 US 0015980 W US0015980 W US 0015980W WO 0075030 A1 WO0075030 A1 WO 0075030A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
slit
valve
perimeter
downstream
Prior art date
Application number
PCT/US2000/015980
Other languages
English (en)
Other versions
WO2000075030A9 (fr
Inventor
Lee A. Getzewich
James M. Lea
Original Assignee
Cascade Designs, Inc.
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 Cascade Designs, Inc. filed Critical Cascade Designs, Inc.
Priority to GB0102723A priority Critical patent/GB2354570B/en
Priority to JP2001501519A priority patent/JP2003501319A/ja
Priority to CA002338763A priority patent/CA2338763C/fr
Publication of WO2000075030A1 publication Critical patent/WO2000075030A1/fr
Priority to US09/779,692 priority patent/US20020011583A1/en
Publication of WO2000075030A9 publication Critical patent/WO2000075030A9/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A45F3/16—Water-bottles; Mess-tins; Cups
    • A45F3/20—Water-bottles; Mess-tins; Cups of flexible material; Collapsible or stackable cups
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/18—Drinking straws or the like
    • A47G21/185—Mouthpieces

Definitions

  • the present invention pertains generally to liquid dispensing valves and more particularly to mouth-operated liquid dispensing valves for use with flexible liquid containers, and methods for making same.
  • Flexible liquid container systems are extensively used in recreational and sporting activities for carrying supplies of water or other nourishing fluids often referred to as sport-drinks. Such systems may be adapted to be carried by someone engaged in sporting activities such as cycling or mountain climbing, and are often used by these persons to drink liquids without pausing from the activities in which they are engaged.
  • An important component of a flexible liquid container system is a valve that permits a user to rapidly ingest large volumes of liquid, while also providing a liquid tight seal for the container while not in use.
  • a commonly used system provides for a flexible container, a tube partially disposed in the container and extending therefrom, and a bite valve positioned on the exposed end of the tube.
  • a relatively simple bite valve for such a system is disclosed in U.S. Pat. No. 5,085,349.
  • the valve has a body in the form of a tube having two flattened (opposite) sides, thus approximating a flattened ellipse in cross section, and having inlet and outlet ends.
  • a plug valve proximate the outlet end of the tube has a slit formed therein, extending generally along the minor axis of the ellipse.
  • a user operates the valve by compressing the flattened sides of the tube together, thereby distorting the plug and opening the slit to allow liquid to be expelled, typically by sucking into the user's mouth.
  • this valve While clearly a simple arrangement, because it has no moving parts, this valve has certain shortcomings, particularly restricted flow rates and excessive weeping and dribbling.
  • the flow rate of liquid through the valve is dependent upon the geometry of the slit and is restricted by two particular factors: the length of the slit and the shape of the slit mating surfaces.
  • the size of the orifice created when the valve is actuated, and therefore the flow rate, is directly related to the length of the slit. The shorter the slit, the lesser the flow rate. Although a longer slit will obviously increase flow rates, it also will weaken the integrity of the seal and allow more weeping and dribbling.
  • the shape of the slit mating surfaces impacts the size of the orifice under actuation.
  • the leading edges of the slit typically defined as those on the outlet surface of the plug, will determine the orifice boundaries and therefore the flow rate. The smoother and squarer the mating surfaces, the lesser the flow rate. (If the compression of the sides of the tube effects the distortion of the plug toward the outlet end, then the leading edges of the slit will be those on the inlet surface of the plug.) However, if the surfaces do not squarely mate with each other, the integrity of the seal will be weakened and more weeping and dribbling will occur.
  • weeping and dribbling of liquid through the valve when not in use result at least in depletion of liquid resources for the user and also a gradual loss of valve integrity, not to mention the possibility of collateral damage to surrounding goods such as clothes.
  • two particular means have been used to control weeping and dribbling: making the plug concave/convex with the convex side oriented toward the inlet end of the valve, and making the plug thicker so as to provide both greater contact area between the slit mating surfaces and a greater "spring-back" force to the plug to bias the slit in the closed position following actuation of the valve.
  • the convex inner surface of the valve plug acts as a self-energizing seal (i.e., when placed under pressure it forces the slit mating surfaces together and prevents leaking), under very low hydrostatic pressures fluid can weep past the seal, particularly after a high number of cycles has caused the material of the valve to lose some of its resiliency.
  • the liquid container may be pressurized, or the container may be raised above the outlet to create a hydrostatic pressure head, thus generating the expelling force for the liquid through the valve.
  • the contents of the liquid container are often not under any pressure at all, and therefore the sealing characteristics of this type of plug are greatly reduced, if not eliminated entirely.
  • the present invention relates to a bite valve diaphragm for use with liquid containers using a fluid delivery conduit.
  • the design maximizes flow rates minimizes weeping and dribbling when compared to conventional diaphragms of the prior art.
  • a feature of the invention is the incorporation of beveled or chamfered edges in the slit defined by the diaphragm.
  • the diaphragm preferably comprises a cylinder portion and a diaphragm portion, although only a diaphragm portion is needed. If a cylinder portion is used, it may be circular in cross section, or have a cross section of other geometric forms such as generally elliptical.
  • the cylinder portion has an inner surface, an outer surface, an upstream end at a first perimeter, and a downstream end at a second perimeter wherein the upstream end is adapted to fit the conduit.
  • the diaphragm portion is coextensive with the second perimeter to prevent fluid entering the upstream end from exiting the downstream end.
  • the diaphragm has an upstream surface, a downstream surface, and a perimeter coincident with the second perimeter.
  • the cylinder portion is intended to provide the means by which the diaphragm is located on the fluid conduit or tube. It is contemplated that the diaphragm can also be directly located in the tube. In such a situation, the diaphragm becomes an insertable disk.
  • an elongate slit defined by a first wall and second wall of the diaphragm wherein at least a portion of the first and second walls diverge towards the downstream surface of the diaphragm so as to create a notch in the downstream surface of the diaphragm at the slit.
  • the creation of a notch or trough operates to maximize the orifice through which fluid will flow, while retaining sufficient material on the upstream side to maintain an effective sealing arrangement.
  • Figure 1 is a cross section view of a bite valve assembly incorporating the present invention taken along the longitudinal axis and orthogonal to a slit in a diaphragm;
  • Figure 1a is a cross section view of an alternative embodiment of the invention wherein a diaphragm is directly insertable into a fluid conduit and a cap is employed to retain the diaphragm therein;
  • Figure 2 is a cross section view of the inner body, showing the details of the diaphragm
  • Figure 3 is a plan view of the inner body, showing the slit located along the minor axis of an elliptical diaphragm with chamfered or beveled edges thus forming a notch or trough;
  • Figure 4 is a cross section view of the outer body, showing the plug and sleeve
  • Figure 5a is a cross section view of the of the inner body, illustrating an increased fluid orifice when beveled or chamfered edges are employed regarding the slit;
  • Figure 5b is a plan view of the inner body of Fig. 5a, showing the area of the orifice of the actuated valve;
  • Figure 6a is a cross section view of the inner body of a prior art diaphragm design, illustrating a fluid flow constriction at the downstream end of the slit;
  • Figure 6b is a plan view of the inner body of Fig. 6a, showing area of the orifice of the actuated valve.
  • Bite valve assembly 10 comprises resilient, elastomeric inner body 12 and resilient, elastomeric outer body 14, which are positioned co-axially with respect to each other such that inner body 12 is substantially surrounded by outer body 14 and both bodies 12 and 14 share longitudinal axis 16.
  • Assembled bite valve assembly 10 thus has inlet end 18 to receive a fluid conduit or tube, and outlet end 20.
  • the interference fits between the two bodies 12 and 14 serve to lock and retain valve assembly 10 in the correct configuration while in use, but also provides for a convenient means to replace inner body 12, which may become worn through use. Also shown in Fig.
  • Lip 58 is circumferential lip 58 positioned generally radially outward from the active portion of inner body 12. Lip 58 creates an enhanced area of localized resiliency to increase the restoring force present at the active portion of inner body 12, and decreases wear on diaphragm 22.
  • FIG. 1a An alternative form of the invention is shown in Fig. 1a.
  • inner body 12" consists only of diaphragm 22'.
  • Tube 70 is modified to receive diaphragm 22' and retention member or cap 80 frictionally fits over tube 70 to prevent unintentional escapement of diaphragm 22'.
  • Inner body 12 has cylindrical portion 24 and diaphragm portion 22.
  • Cylindrical portion 24 has a generally elliptical section, a smooth outer wall, and a pair of circumferential ribs 38 and 40. These ribs are formed to locate in corresponding complementary grooves 54 and 56 formed in outer body 14 as is best shown in Fig. 4.
  • Diaphragm 22 has concave outer surface 26 and convex inner surface 28.
  • groove 34 is defined at the periphery of diaphragm 22 to receive complementary circumferential rib 52 as is best shown also in Fig. 4.
  • the combination of mating grooves and ribs functions to retain body 12 in body 14 during use of bite valve assembly 10, as is best shown in Fig. 1.
  • diaphragm 22 also defines slit 32 which extends from outer surface 26 through to inner surface 28.
  • slit 32 intersects the longitudinal axis 16 and is coincident with the minor axis 36 of diaphragm 32.
  • Slit 32 is intentionally formed to have a chamfered or beveled profile, thus forming a notch or trough defined by converging walls 40 and 42 for reasons that will now be described.
  • the following data describes the effect of modifying a prior art bite valve to incorporate the invention.
  • 15 standard slit bite valves were used; five were left unmodified for control, five were modified to remove material adjacent the upstream side of the slit by means of a sharpened blade, and five were modified to remove material adjacent the upstream side of the slit by means of a grinding tool.
  • Chamfer or bevel angles relative to centerline ranged from about 30 to 45 degrees.

Abstract

L'invention porte sur une membrane se montant dans un conduit où circule un fluide et comportant une partie cylindrique (24) présentant une surface intérieure, une surface extérieure, une extrémité amont, et une extrémité aval. Une partie (22) de la membrane coextensive avec l'extrémité aval du cylindre (24) comporte une fente allongée (32) empêchant le passage du fluide lorsqu'elle est fermée, et le permettant lorsqu'elle est ouverte. Ladite fente présente en outre une entaille (40, 42) divergeant en direction de l'extrémité aval de la partie (22) de la membrane.
PCT/US2000/015980 1999-06-08 2000-06-08 Clapet a mordre pour dispositif d'hydratation personnel WO2000075030A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB0102723A GB2354570B (en) 1999-06-08 2000-06-08 A diaphragm for use with a fluid carrying conduit
JP2001501519A JP2003501319A (ja) 1999-06-08 2000-06-08 個人使用の水和装置のためのかみ合いバルブおよびその製造方法
CA002338763A CA2338763C (fr) 1999-06-08 2000-06-08 Clapet a mordre pour dispositif d'hydratation personnel et procede de fabrication
US09/779,692 US20020011583A1 (en) 2000-06-08 2001-02-07 Bite valve for personal hydration devices and a method for making the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13817799P 1999-06-08 1999-06-08
US60/138,177 1999-06-08

Publications (2)

Publication Number Publication Date
WO2000075030A1 true WO2000075030A1 (fr) 2000-12-14
WO2000075030A9 WO2000075030A9 (fr) 2002-05-02

Family

ID=22480820

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/015980 WO2000075030A1 (fr) 1999-06-08 2000-06-08 Clapet a mordre pour dispositif d'hydratation personnel

Country Status (4)

Country Link
JP (1) JP2003501319A (fr)
CA (1) CA2338763C (fr)
GB (1) GB2354570B (fr)
WO (1) WO2000075030A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2019448719B2 (en) * 2019-05-27 2023-08-31 Beijing Shenchuang Century Information Technology Co., Ltd. Anti-overflow pipe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5820225B2 (ja) * 2011-10-12 2015-11-24 日本クロージャー株式会社 スパウト
JP6795726B1 (ja) * 2020-02-03 2020-12-02 宝殿石油販売株式会社 チューブ容器の口頸体のスリット構造

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2585286A (en) * 1949-05-02 1952-02-12 Margaret L Tubbs Resilient valve in rigid wall portions of containers
US4836404A (en) * 1988-02-05 1989-06-06 Peter Coy Valved container closure
US5085349A (en) * 1990-02-08 1992-02-04 Fawcett Roger R Resilient valve and dispensing system for bicyclists
US5492253A (en) * 1995-03-24 1996-02-20 Proshan; Mary-Elizabeth Cap attachment for small neck plastic bottle of liquid

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0339411Y2 (fr) * 1985-08-28 1991-08-20
US6065642A (en) * 1998-12-09 2000-05-23 Aptargroup, Inc. Non-venting valve and dispensing package for fluid products and the like

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2585286A (en) * 1949-05-02 1952-02-12 Margaret L Tubbs Resilient valve in rigid wall portions of containers
US4836404A (en) * 1988-02-05 1989-06-06 Peter Coy Valved container closure
US5085349A (en) * 1990-02-08 1992-02-04 Fawcett Roger R Resilient valve and dispensing system for bicyclists
US5492253A (en) * 1995-03-24 1996-02-20 Proshan; Mary-Elizabeth Cap attachment for small neck plastic bottle of liquid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2019448719B2 (en) * 2019-05-27 2023-08-31 Beijing Shenchuang Century Information Technology Co., Ltd. Anti-overflow pipe

Also Published As

Publication number Publication date
JP2003501319A (ja) 2003-01-14
CA2338763A1 (fr) 2000-12-14
GB0102723D0 (en) 2001-03-21
CA2338763C (fr) 2004-12-14
WO2000075030A9 (fr) 2002-05-02
GB2354570B (en) 2003-11-26
GB2354570A (en) 2001-03-28

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Free format text: PAGES 1-7, DESCRIPTION, REPLACED BY NEW PAGES 1-7; PAGE 8, CLAIMS, REPLACED BY A NEW PAGE 8; PAGES 1/4-4/4, DRAWINGS, REPLACED BY NEW PAGES 1/2-2/2; DUE TO LATE TRANSMITTAL BY THE RECEIVING OFFICE