US3630418A - Dispenser for supplying liquid by suction - Google Patents

Dispenser for supplying liquid by suction Download PDF

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Publication number
US3630418A
US3630418A US10548A US3630418DA US3630418A US 3630418 A US3630418 A US 3630418A US 10548 A US10548 A US 10548A US 3630418D A US3630418D A US 3630418DA US 3630418 A US3630418 A US 3630418A
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United States
Prior art keywords
conduits
tube
dispenser
liquid
cup
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.)
Expired - Lifetime
Application number
US10548A
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English (en)
Inventor
Theodore Bilichniansky
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Bayer Corp
Original Assignee
Technicon Instruments Corp
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Filing date
Publication date
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Publication of US3630418A publication Critical patent/US3630418A/en
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    • 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
    • B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/508—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above

Definitions

  • a dispenser including a container body having a mouth.
  • a permanent liquid seal across the mouth has a pair of ducts approaching the bottom of the container and opening thereinto.
  • the ducts extend upwardly through the seal, having their upper ends spaced apart.
  • a short length of flexible tubing interconnects the upper ends of the ducts to prevent leakage and spillage.
  • One end of the tubing may be disconnected and then connected to a suction inlet so that the connected one of the pair of ducts becomes an aspirating tube and the other provides an air inlet.
  • Multiple container bodies may be supported together.
  • This invention relates to dispensers for supplying liquid by suction, and especially to such devices used for supplying chemical and other solutions employed in automated continuous analysis apparatus.
  • a specimen for colorimetric analysis or some other type of analysis it is traditional to treat a specimen for colorimetric analysis or some other type of analysis with a processing media.
  • a processing media For example, when analyzing blood for glucose, it is common to use, as processing media, solutions of sodium chloride, sodium bicarbonate and neocuproine hydrochloride, each supplied from a separate reservoir in the form of a container such as a bottle.
  • the operator was required to collect bottles of the various reagents needed to run the desired analysis or analyses and then, after removing the caps supplied on the bottles for shipment and handling, insert a suction tube from the apparatus in each one.
  • Each bottle mouth might be left open and a weighted, flexible tube end portion dropped into the bottle for aspiration of its contents into the apparatus.
  • An alternative was to support a straw in a bottle through a disc held down on the mouth of the bottle by a retaining ring threaded on the bottle, the connection preventing separation of the disc from the bottle but being sufficiently loose to enable air to enter the bottle upon aspiration.
  • the dispenser which is of the disposable type, may be conveniently constructed, at least primarily, of plastic materials resistant to chemicals and include a filter for excluding from analysis apparatus a substance, for example, such as mold in the dispenser.
  • a dispenser including an upright, walled liquid container body having an upwardly opening mouth Ill across which a permanent liquid-sealing element is assembled, after the body is filled with the desired volume of a particular liquid, and sealed thereto.
  • An upwardly extending pair of ducts opening into the container body adjacent the bottom of the latter extend upwardly through the sealing element in liquidtight relation and have their upper ends laterally spaced from one another, one of which may terminate in a nipple.
  • a short length of flexible tubing interconnects the nipple and the other duct before use to prevent leakage and spillage.
  • the end of the tubing connected to the nipple may be slipped by manipulation from the latter and connected by a suitable connector to a suction inlet length of tubing of the analysis apparatus, so that the connected one of the pair of ducts becomes an aspirating tube and the other an air inlet.
  • the connection may be made quickly without wetting the user's fingers with the reagent.
  • FIG. I is a fragmentary, top plan view illustrating a dispenser for supplying liquid by suction embodying the invention, the dispenser, shown without its shipping cap, being illustrated as joined to a companion;
  • FIG. 2 is a broken, fragmentary elevational view in exploded form, illustrating the shipping cap, and showing a portion of the dispenser in section taken on line 22 of FIG. 1;
  • FIG. 3 is a fragmentary sectional view similar to FIG. 2, illustrating the dispenser connected to a suction inlet.
  • FIG. 4 is a top plan view of a modified form of dispenser, omitting the shipping cap.
  • FIG. 5 is a fragmentary elevational view of the dispenser of FIG. 4 showing a portion thereof in section taken on line 55 of FIG. 4.
  • FIGS. 1 and 2 there is shown a hollow container body of a dispenser for supplying liquid by suction, indicated generally at 10, which may be supported together with its neighbor, indicated generally at 11, as by the adjoining side walls thereof being fused with one another.
  • a hollow container body of a dispenser for supplying liquid by suction indicated generally at 10
  • its neighbor indicated generally at 11
  • the bodies 10 and 11 and their associated elements may be identical, and as more than two may be joined together, a description of the body 10 with its associated elements will suffice.
  • the body 10 which may be constructed of chemical-resistant polyethylene, is of generally rectangular form having an upwardly extending restricted portion or neck 12 providing an upwardly opening mouth at its upper extremity.
  • the body may have a broad shoulder portion I3 below the neck.
  • the neck 12 is provided externally with a screw thread 14 for cooperation with a threaded portion, not shown, ofa shipping cap 15 having a body which may be structured of suitable plastic material.
  • the container body or bottle 10 is provided with an insert assembly, indicated generally at 16, which is assembled with the bottle after the latter has been filled to the desired level with a liquid such as a reagent.
  • the insert assembly 16 includes a sealing element 17.
  • the seal 17 is of cup shape, provided with a radial flange 18 to overlie the upper extremity of the neck 12 of the bottle.
  • the sealing cup 17, which may be molded of polyethylene, has two apertures, not shown, through the bottom thereof, one surrounded by an integral depending collar 19 and the other by a similar collar 20.
  • the aperture surrounded by the collar 19 is the larger of the two.
  • the other aperture surrounded by the collar 20 communicates with an integral upwardly extending tubular portion 21 which is struc tured as an open nipple terminating well below the upper extremity of the sealing cup 17.
  • the insert assembly 16 also includes in the form shown a straight tube 22 having a press fit in the collar 20, preferably abutting the bottom of the cup of the seal 17.
  • the tube 22 is in communication with the nipple 21 and is of a length sufficient to approach the bottom of the bottle.
  • the tube 23 has at the lower portion thereof an integral enlargement 25 provided intermediate of its ends with a radial flange 26 for housing a filter, not shown, of a type to filter mold, for example, which may have formed in the bottle from the reagent therein.
  • the lower end of the enlarged portion 25 of the tube 23, which is open, may closely approach the bottom of the bottle.
  • the tube 22 lies adjacent the tube 23 and has the lower extremity thereof open and spaced from the lower extremity of the tube 23 in the manner shown in FIG. 2.
  • the tube 22 does not approach the bottom of the bottle as closely as does the tube 23.
  • the open lower end of the tube 22 is spaced a distance upwardly from the flange 26 of the tube 23 and is located thereover in the manner shown.
  • the arrangement is such that the flange 26 is located intermediate the lower end of the tube 22 and the lower end of the tube 23.
  • the distance between the open lower end of the tube 23 and the open lower end of the tube 22 is not great, and it is desirable as will appear hereinafter that both of these ends be immersed in the same fluid, whether liquid or air.
  • the insert assembly 16 further includes a short length of thin-walled flexible tubing which may be constructed of polyvinylchloride with a suitable plasticizer.
  • the last-mentioned tubing is indicated at 27, and in the condition of the dispenser shown in FIGS. 1 and 2 has one end thereof slipped over the elbow 24 of the tube 23 so as to have a friction fit therewith and the other end slipped over the nipple 21 to have a friction fit with the latter.
  • This arrangement is such that the tubing 27 forms a fluid connection between the tubes 22 and 23.
  • the tubing 27 in this condition lies entirely within the sealing cup 17.
  • the insert assembly 16 is subsequently assembled in the bottle with the sealing cup 17 in the position previously described, the flange 18 of the cup 17 may be sealed to the neck 12 of the bottle by the application of heat.
  • the screwcap 15 may have a suitable liner, not shown, affixed therein to seal against the flange 18 when the cap is assembled with and tightened on the bottle. It is noted that before and after assembly of the cap with the bottle, the recessed cup 17 protects the tubing 27 and its connections, and prevents anything from falling into the liquid contents of the bottle.
  • This construction including the tubing 27 provides a double seal for the bottle for shipping, which very effectively inhibits leakage from the bottle.
  • the shipping cap 15 is removed and discarded.
  • the user may insert a finger into the cup 17 to engage from below the tubing 27 which in the assembled position of FIG. 2 is bent upwardly intermediate its ends as shown.
  • An upward pull on this portion of the tubing 27 serves to disconnect the tubing from the nipple 21. Such a pull does not disconnect the tubing from the tube 23 as it is in a direction substantially normal to the plane in which the elbowed end of the tube 23 is connected to the tubing 27.
  • the free end portion of the tubing is extended from the cup 17 by manipulation and the free end portion of a suction tube 29 carrying a suitable nipple, indicated generally at 30, is plugged into the last-mentioned end of the tubing 27 as shown in FIG. 3.
  • the bottle tube 23 aspirates liquid on the application of suction and the bottle tube 22 admits air into the bottle to the inlet duct ornipple 21. Air bubbles passing into the liquid through the tube 22 tend to rise in the liquid rather than be pulled into the inlet end of the aspirating tube 23, owing to the aforementioned construction and arrangement of the tubes 22 and 23.
  • the dispenser or bottle 11 may be connected in similar manner to another suction tube of the analysis apparatus. If it is desired to run the apparatus for less than the full period of time allowed by the volumes of reagents before changing over the apparatus for a different type of analysis, say uria-nitrogen (BUN), the reagent bottles in pack form may be removed from the apparatus with the fluid manifold still connected thereto and stored as a whole until later use, all with little tendency of spillage, contamination or evaporation.
  • BUN uria-nitrogen
  • the container body indicated generally at 100, is similar to the container body 10 previously described but is shown as a separate entity.
  • the body or bottle 10a has a neck 12a above a shouldered portion 130, which is threaded, as at 14a, to receive a cap, not shown, similar to the cap 15.
  • An insert assembly indicated generally at 16a, is provided which is similar to the insert assembly 16 previously described but different therefrom in some respects which will appear hereinafter.
  • the sealing element 17a is similar.
  • Like reference numerals indicate like parts. It is assembled and sealed to the bottle in similar fashion.
  • a tube 23a is provided which differs from the construction and arrangement of the tube 23 previously described only in that the upper end portion of the tube 23a above the bottom of the sealing cup 17a is vertical or straight rather than elbowed.
  • a length of tubing, indicated at 270 interconnects the last-mentioned end of the tube 230 and the nipple 21 in the condition of the dispenser shown in FIG. 3, and is similar to the tubing 27 described heretofore. As shown, in the last-mentioned condition, the tubing 270, located entirely within the cup-shaped seal, is bent into an inverted U-shape As the end connections of the tubing 270 may look similar to the user, unlike the form previously described, the user must be instructed as to which end of the tubing 27a to disconnect.
  • the free end of the last-mentioned tubing may be connected to a suction inlet.
  • the manner in which this connection is made is similar to that described and shown with reference to FIG. 3.
  • the dispenser may be pressurized instead, for the dispensing of its liquid contents, as by pumping air into one of the above-described conduits while permitting liquid to exit from the other.
  • a dispenser for supplying liquid by suction comprising: an upright walled liquid container body having an upper mouth portion, and means defining a liquid seal comprising a sealing element extending across said mouth portion and sealed thereto and a pair of conduits approaching the bottom of the body and extending upwardly through said sealing element, said means further comprising a flexible tube forming a fluid connection between the upper ends of said conduits and detachable from one of said ends for connection to a suction inlet, so that the connected one of said conduits becomes an aspirating inlet and the other of said conduits becomes an air inlet.
  • a dispenser as defined in claim 1 further including a detachable cap covering said mouth portion and enclosing said means defining a liquid seal.
  • a dispenser as defined in claim I wherein; said sealing element is of cup shape and recessed in the mouth portion of the body, said upper ends of the conduits being located within the sealing cup together with said flexible tube when the latter forms a fluid connection between said conduits.
  • a dispenser as defined in claim 1 wherein; said flexible tube has a friction fit with said conduits, the aspirating one of said conduits having a horizontally extending portion to which said flexible tube is fitted, the upper end of the air inlet conduit having a vertically arranged portion to which said flexible tube is fitted to facilitate disconnection of the last-mentioned tube from the last-mentioned conduit by an upward pull, without dislocation of the other end of said flexible tube.
  • a dispenser for supplying liquid by suction comprising:
  • an upright walled liquid container body having an upper mouth portion, a cup-shaped sealing element recessed in said mouth portion, a first vertically arranged tube having the upper end thereof in said cup element, said tube extending through the bottom of said cup element, said tube extending through the bottom of said cup element and having the lower end thereof approaching the bottom of said body, means defining a vertical conduit extending throughthe bottom of said cup element and including a second tube having an end approaching the bottom of the body, the upper end of said means defining a conduit terminating within said cup element, a flexible tube forming a fluid connection between the upper end of said first tube and the upper end of said means defining a conduit and detachable from the latter for connection to a suction inlet, so that the first tube becomes an aspirating tube and the second tube becomes an air inlet.
  • a dispenser as defined in claim 8 wherein; said means defining a vertical conduit comprises a nipple above said second tube, extending upwardly from the bottom of said cup element and formed integrally with the latter.
  • a dispenser as defined in claim 9 wherein; said first tube is elbowed above the bottom of said cup element, and said flexible tube is connected to a horizontal portion of the first tube, so as to resist dislocation of the last-mentioned connection upon an upward pull being exerted on said flexible tube, said flexible tube lying within said cup element when connected to the first tube and said nipple.
  • a dispenser for supplying liquid comprising: an upright walled liquid container body having an upper mouth portion, and means defining a liquid seal comprising a sealing element extending across said mouth portion and sealed thereto, and a pair of conduits supported by said sealing element and approaching the bottom of said container body, each of said conduits having an opening extending outwardly of said sealing element, said means also comprising a third conduit forming a fluid connection between the last-mentioned openings of said pair of conduits.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Closures For Containers (AREA)
US10548A 1970-02-11 1970-02-11 Dispenser for supplying liquid by suction Expired - Lifetime US3630418A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1054870A 1970-02-11 1970-02-11

Publications (1)

Publication Number Publication Date
US3630418A true US3630418A (en) 1971-12-28

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Application Number Title Priority Date Filing Date
US10548A Expired - Lifetime US3630418A (en) 1970-02-11 1970-02-11 Dispenser for supplying liquid by suction

Country Status (11)

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US (1) US3630418A (xx)
JP (2) JPS4918829B1 (xx)
BE (1) BE761645A (xx)
CA (1) CA941762A (xx)
CH (2) CH573110A5 (xx)
DE (2) DE2105307C3 (xx)
FR (1) FR2078410A5 (xx)
GB (2) GB1328433A (xx)
NL (1) NL7101031A (xx)
SE (1) SE365947B (xx)
SU (1) SU428594A3 (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6701975B1 (en) * 2002-10-09 2004-03-09 Campbell Hausfeld/Scott Fetzer Company Lid assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT406913B (de) * 1995-07-14 2000-10-25 Avl Verbrennungskraft Messtech In einen probenanalysator einsetzbare reagenzienflaschen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US489786A (en) * 1893-01-10 Oil or gasoline can
US2117747A (en) * 1936-06-26 1938-05-17 Smith Herman Milk-dispensing device
US3285478A (en) * 1964-02-07 1966-11-15 Sun Ind Inc Fluid drawing siphon for bottles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US489786A (en) * 1893-01-10 Oil or gasoline can
US2117747A (en) * 1936-06-26 1938-05-17 Smith Herman Milk-dispensing device
US3285478A (en) * 1964-02-07 1966-11-15 Sun Ind Inc Fluid drawing siphon for bottles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6701975B1 (en) * 2002-10-09 2004-03-09 Campbell Hausfeld/Scott Fetzer Company Lid assembly

Also Published As

Publication number Publication date
CH573110A5 (xx) 1976-02-27
GB1328433A (en) 1973-08-30
SE365947B (xx) 1974-04-08
DE2105307A1 (de) 1971-12-30
JPS4918831B1 (xx) 1974-05-13
NL7101031A (xx) 1971-08-13
JPS4918829B1 (xx) 1974-05-13
BE761645A (fr) 1971-07-15
CH556026A (de) 1974-11-15
CA941762A (en) 1974-02-12
GB1340470A (en) 1973-12-12
DE2105307B2 (de) 1974-05-30
DE2166571A1 (de) 1974-09-12
FR2078410A5 (xx) 1971-11-05
DE2105307C3 (de) 1975-01-09
SU428594A3 (ru) 1974-05-15

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