US3773256A - Method of teaching use of drinking straw - Google Patents

Method of teaching use of drinking straw Download PDF

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Publication number
US3773256A
US3773256A US00262597A US3773256DA US3773256A US 3773256 A US3773256 A US 3773256A US 00262597 A US00262597 A US 00262597A US 3773256D A US3773256D A US 3773256DA US 3773256 A US3773256 A US 3773256A
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liquid
subject
mouth
drinking
drinking tube
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US00262597A
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K Wright
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47GHOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00Table-ware
    • A47G21/18Drinking straws or the like
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47GHOUSEHOLD OR TABLE EQUIPMENT
    • A47G2400/00Details not otherwise provided for in A47G19/00-A47G23/16
    • A47G2400/02Hygiene
    • A47G2400/027Non-return valves
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/2713Siphons
    • Y10T137/2842With flow starting, stopping or maintaining means
    • Y10T137/2877Pump or liquid displacement device for flow passage
    • Y10T137/2897Collapsible bulb

Definitions

  • the common leg of the tubing is a delivery leg which conducts liquid to the mouth of a child.
  • the squeeze bulb and its leg are filled with liquid so that a slight pressure on it will inject a small amount of liquid into the childs mouth.
  • a suction action will occur and this will cause liquid to be drawn from the container through the liquid leg.
  • the primary object of this invention is to provide means to assist a child in drinking from a straw or the like, and to teach the child the normal functions of drinking in this manner.
  • a further object is to provide a device adapted for the foregoing purposes, wherein the device is convenient and safe to operate, simple and economical to manufacture, and durable in use.
  • FIG. 1 is a front elevation showing the device as a whole and its manner of use
  • FIG. 2 is an enlarged sectional view taken on the line 2-2 of FIG. 1;
  • FIG. 3 is a sectional view along the line 33 of FIG. 2;
  • FIG. 4 is an enlarged sectional view taken at the juncture of the delivery leg with the bifurcated portion of the tubing.
  • the apparatus includes tubing comprising a first or squeeze-bulb leg section 10, connected at its outer end to a liquid-forcing means such as the flexible closed squeeze bulb 12, a second or feedleg section 14, which in use leads to a liquid container 16, and a third or dispensing-leg section 18, which is open at its distal end to supply liquid to the mouth of an infant or child.
  • the tubing sections and 14 are connected by sleeves and 22 to each of two legs 24 and 26 of the bifurcated connector piece having a common leg 28 connected to dispensing tube section 18.
  • the tubing leg sections, sleeves and connector piece sections may be manufactured as an integral structure, but the structure shown is preferred because the parts may be disassembled or sold as a kit for packaging purposes or for greater ease of cleansing or sterilization.
  • tubing and sleeves are formed of transparent flexible plastic material which can, without harm, be elevated to sterlizing temperatures or cleansed with detergents, e.g., certain selected polyethylenes or polyvinylchlorides or the like, all well known to those skilled in the art.
  • detergents e.g., certain selected polyethylenes or polyvinylchlorides or the like, all well known to those skilled in the art.
  • the inlet end of tubing section 14 is provided with a ball check valve fitting 30 which contains a ball 32 and fingers 34 which define a cage for the ball.
  • the bottom surface of the fitting has projections 36 which prevent the said surface from resting flat on the bottom of a receptacle so as to cut off liquid flow.
  • squeeze bulb 12 and tubing sections 10, 14 and 18 are filled with liquid. This can be conveniently done by collapsing and releasing the squeeze bulb while selectively pinching off or otherwise closing the discharge end of dispensing leg 18 and while inserting the ball-check valve end of the tubing section into filled container 16. Repetition of this operation should fill the bulb and tubing up to the distal or discharge end of tubing 18. The discharge end is then inserted into the childs mouth. Gentle pressure on the bulb will result in some of the liquid being forced into the infants mouth because ball check valve 30 will prevent back flow into container 16. The child will swallow the liquid by reflex and this swallowing is accompanied by a sucking action. The child will soon begin sucking on the tube without any forcing of the liquid feed by squeezing on the bulb. After a short time the child will thus learn the required sucking action and can then use a conventional drinking straw or glass tube such as those often used in hospitals.
  • a method for teaching infant subjects and the like to drink through a drinking tube comprising the steps of inserting one end of a drinking tube into a body of liquid; placing the other end of the drinking tube in the mouth of the subject; forcing through the drinking tube and into the mouth of the subject a portion of said liquid thereby causing the subject to swallow said portion of liquid and as a result of swallowing, creating a sucking action on the liquid remaining in the straw, discontinuing the forcing action and permitting flow of said liquid into the mouth of the subject as a result of said sucking action thereby inducing the subject to swallow again and learn the normal functions of drinking through a drinking tube.
  • a method according to claim 1 including the step of filling the drinking tube with liquid from the body of liquid before the step of forcing a portion of the liquid in the drinking tube into the mouth of the subject.
  • a method according to claim 3 including the step of preventing the liquid in the drinking tube from returning through the drinking tube to the body of liquid after the drinking tube is filled.
  • a method for teaching infant subjects and the like to use a drinking straw comprising; providing open ended conduit means for the transmission of liquids from an inlet end disposed in a liquid resevoir to an outlet end disposed in the mouth of the subject; pumping liquid through said conduit means to the mouth of the subject to initiate normal swallowing functions by the subject, resulting in a suction action on said inlet end; and discontinuing said pumping to enable free flow of said liquid through said conduit to the mouth of the subject in response to said suction action unassisted by said pumping, whereby said unassisted flow induces the subject to perpetuate said suction action and to thereby learn the normal functions of drinking through a straw.

Abstract

This invention relates to apparatus for teaching infants and young children to use a drinking straw or tube. In particular, it relates to a bifurcated tube in which one leg is placed in an open liquid container and the other terminates in a liquid forcing means e.g., a squeeze bulb. The common leg of the tubing is a delivery leg which conducts liquid to the mouth of a child. In use, the squeeze bulb and its leg are filled with liquid so that a slight pressure on it will inject a small amount of liquid into the child''s mouth. Upon swallowing, a suction action will occur and this will cause liquid to be drawn from the container through the liquid leg.

Description

United States Patent 11 1 Wright 1451 Nov. 20, 1973 [5 METHOD OF TEACHING USE OF 1,762,517 6/1930 Larson 137 150 x DRINKING STRAW 1,941,859 1 1934 Hall 137 150 2,063,803 12/1936 Gildersleeve.... 35 1 UX Inventor: Kenneth 0- g M1SS10n,TeX- 2,414,697 1 1947 Pettersson 35 29 E UX 2,811,808 11 1957 Briese 239/33 x [22] June 1972 2,882,729 4 1959 Weiser 35/29 E x 21] Appl. No.: 262,597
Related US. Application Data Continuation of Ser. No. 68,922, Sept. 2, 1970, abandoned.
[56] References Cited UNITED STATES PATENTS l/l878 Sutton 137/150 X 6/1906 Foster 137/150 6/1921 Schreiner.. 137/150 4/1926 Helander 137/150 X 6/1926 Pritchett 137/150 Primary ExaminerR0bert S. Ward, Jr. Attorney-Jerry A. Thiebeau [5 7 ABSTRACT This invention relates to apparatus for teaching infants and young children to use a drinking straw or tube. In particular, it relates to a bifurcated tube in which one leg is placed in an open liquid container and the other terminates in a liquid forcing means e.g., a squeeze bulb. The common leg of the tubing is a delivery leg which conducts liquid to the mouth of a child. In use, the squeeze bulb and its leg are filled with liquid so that a slight pressure on it will inject a small amount of liquid into the childs mouth. Upon swallowing, a suction action will occur and this will cause liquid to be drawn from the container through the liquid leg.
5 Claims, 4 Drawing Figures Pmminuuvm I975 3,773,256
d- III I INVENTOR- KE/v/vE TH 0 WRIGHT gmw ATTORNEYs METHOD OF TEACHING USE OF DRINKING STRAW This is a continuation of application Ser. No. 68,922, filed Sept. 2, 1970, and now abandoned.
Often it is desirable that ill children use a drinking tube but they cannot be taught its use without a harmful emotional upset, and sometimes the child will refuse the taking of the liquid entirely. Also it is desirable that healthy children use a straw because drinking directly from a container is often difficult for a small child and it will spill its contents. Not only liquids such as water or milk can be fed with this device, but also medicines can be added to the liquid.
Thus the primary object of this invention is to provide means to assist a child in drinking from a straw or the like, and to teach the child the normal functions of drinking in this manner.
A further object is to provide a device adapted for the foregoing purposes, wherein the device is convenient and safe to operate, simple and economical to manufacture, and durable in use.
These and other objects will be apparent from the following specification, when read in conjunction with the accompanying drawings, in which:
FIG. 1 is a front elevation showing the device as a whole and its manner of use;
FIG. 2 is an enlarged sectional view taken on the line 2-2 of FIG. 1;
FIG. 3 is a sectional view along the line 33 of FIG. 2; and
FIG. 4 is an enlarged sectional view taken at the juncture of the delivery leg with the bifurcated portion of the tubing.
Referring to FIG. 1, the apparatus includes tubing comprising a first or squeeze-bulb leg section 10, connected at its outer end to a liquid-forcing means such as the flexible closed squeeze bulb 12, a second or feedleg section 14, which in use leads to a liquid container 16, and a third or dispensing-leg section 18, which is open at its distal end to supply liquid to the mouth of an infant or child. The tubing sections and 14 are connected by sleeves and 22 to each of two legs 24 and 26 of the bifurcated connector piece having a common leg 28 connected to dispensing tube section 18. The tubing leg sections, sleeves and connector piece sections may be manufactured as an integral structure, but the structure shown is preferred because the parts may be disassembled or sold as a kit for packaging purposes or for greater ease of cleansing or sterilization. In this connection the tubing and sleeves are formed of transparent flexible plastic material which can, without harm, be elevated to sterlizing temperatures or cleansed with detergents, e.g., certain selected polyethylenes or polyvinylchlorides or the like, all well known to those skilled in the art.
The inlet end of tubing section 14 is provided with a ball check valve fitting 30 which contains a ball 32 and fingers 34 which define a cage for the ball. The bottom surface of the fitting has projections 36 which prevent the said surface from resting flat on the bottom of a receptacle so as to cut off liquid flow.
In use, squeeze bulb 12 and tubing sections 10, 14 and 18 are filled with liquid. This can be conveniently done by collapsing and releasing the squeeze bulb while selectively pinching off or otherwise closing the discharge end of dispensing leg 18 and while inserting the ball-check valve end of the tubing section into filled container 16. Repetition of this operation should fill the bulb and tubing up to the distal or discharge end of tubing 18. The discharge end is then inserted into the childs mouth. Gentle pressure on the bulb will result in some of the liquid being forced into the infants mouth because ball check valve 30 will prevent back flow into container 16. The child will swallow the liquid by reflex and this swallowing is accompanied by a sucking action. The child will soon begin sucking on the tube without any forcing of the liquid feed by squeezing on the bulb. After a short time the child will thus learn the required sucking action and can then use a conventional drinking straw or glass tube such as those often used in hospitals.
The specific embodiment described hereinabove is presented as being illustrative only. It will be understood that numerous changes and modifications may be made by those skilled in the art without departing from the spirit of the invention or the scope of the annexed claims.
I claim:
1. A method for teaching infant subjects and the like to drink through a drinking tube, comprising the steps of inserting one end of a drinking tube into a body of liquid; placing the other end of the drinking tube in the mouth of the subject; forcing through the drinking tube and into the mouth of the subject a portion of said liquid thereby causing the subject to swallow said portion of liquid and as a result of swallowing, creating a sucking action on the liquid remaining in the straw, discontinuing the forcing action and permitting flow of said liquid into the mouth of the subject as a result of said sucking action thereby inducing the subject to swallow again and learn the normal functions of drinking through a drinking tube.
2. A method according to claim 1 wherein the said portion of the liquid is forced into the mouth of the subject by a pumping action.
3. A method according to claim 1 including the step of filling the drinking tube with liquid from the body of liquid before the step of forcing a portion of the liquid in the drinking tube into the mouth of the subject.
4. A method according to claim 3 including the step of preventing the liquid in the drinking tube from returning through the drinking tube to the body of liquid after the drinking tube is filled.
5. A method for teaching infant subjects and the like to use a drinking straw, comprising; providing open ended conduit means for the transmission of liquids from an inlet end disposed in a liquid resevoir to an outlet end disposed in the mouth of the subject; pumping liquid through said conduit means to the mouth of the subject to initiate normal swallowing functions by the subject, resulting in a suction action on said inlet end; and discontinuing said pumping to enable free flow of said liquid through said conduit to the mouth of the subject in response to said suction action unassisted by said pumping, whereby said unassisted flow induces the subject to perpetuate said suction action and to thereby learn the normal functions of drinking through a straw.

Claims (5)

1. A method for teaching infant subjects and the like to drink through a drinking tube, comprising the steps of inserting one end of a drinking tube into a body of liquid; placing the other end of the drinking tube in the mouth of the subject; forcing through the drinking tube and into the mouth of the subject a portion of said liquid thereby causing the subject to swallow said portion of liquid and as a result of swallowing, creating a sucking action on the liquid remaining in the straw, discontinuing the forcing action and permitting flow of said liquid into the mouth of the subject as a result of said sucking action thereby inducing the subject to swallow again and learn the normal functions of drinking through a drinking tube.
2. A method according to claim 1 wherein the said portion of the liquid is forced into the mouth of the subject by a pumping action.
3. A method according to claim 1 including the step of filling the drinking tube with liquid from the body of liquid before the step of forcing a portion of the liquid in the drinking tube into the mouth of the subject.
4. A method according to claim 3 including the step of preventing the liquid in the drinking tube from returning through the drinking tube to the body of liquid after the drinking tube is filled.
5. A method for teaching infant subjects and the like to use a drinking straw, comprising; providing open-ended conduit means for the transmission of liquids from an inlet end disposed in a liquid resevoir to an outlet end disposed in the mouth of the subject; pumping liquid through said conduit means to the mouth of the subject to initiate normal swallowing functions by the subject, resulting in a suction action on said inlet end; and discontinuing said pumping to enable free flow of said liquid through said conduit to the mouth of the subject in response to said suction action unassisted by said pumping, whereby said unassisted flow induces the subject to perpetuate said suction action and to thereby learn the normal functions of drinking through a straw.
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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4153170A (en) * 1977-05-02 1979-05-08 Aquarian Star T Apparatus for weaning children
US4398533A (en) * 1981-05-04 1983-08-16 Barker Randall R Drinking device for divers
US4607755A (en) * 1984-11-15 1986-08-26 Andreozzi William F Children's drinking vessel
US4699319A (en) * 1986-06-12 1987-10-13 Green Ethel F Apparatus for delivering drinks on demand
EP0390916A1 (en) * 1988-09-14 1990-10-10 Mallinckrodt, Inc. Device for the oral administration of a radioactive liquid
US5184774A (en) * 1991-05-13 1993-02-09 Eric Lipson Drinking straw assembly kit
US5725018A (en) * 1994-09-16 1998-03-10 Paczonay; Joseph R. Gravity check valve
US5806765A (en) * 1996-09-11 1998-09-15 Weinstein; Robert E. Liquid drinking assemblage and system
US6032873A (en) * 1998-10-26 2000-03-07 Weinstein; Robert E. Liquid drinking assemblage
WO2000071478A2 (en) * 1999-05-24 2000-11-30 Perez San Vicente Ruiz Jose Ar Methods for producing internally divided containers, bottles, glasses and the like and bifurcated straws and resulting products
US20030213733A1 (en) * 2000-05-08 2003-11-20 Scott Beckham Waste filter and manifold system
US20030218076A1 (en) * 2002-03-29 2003-11-27 Donald Farnsworth Novelty pump straw with combined display area and prize delivery system
US20050092373A1 (en) * 2003-10-30 2005-05-05 Schafer Christopher E. Fluid retaining apparatus with ball valve
US20060021996A1 (en) * 2004-07-30 2006-02-02 Scott L J Iii Multi-chambered drink bottle
US20060076252A1 (en) * 2004-10-12 2006-04-13 Magiccom Drinking straw kits and methods
US20060144439A1 (en) * 2004-12-30 2006-07-06 Bell Samuel R Siphon generator
US20060144955A1 (en) * 2003-03-27 2006-07-06 Donald Farnsworth Novelty pump straw with combined display area and prize delivery system
US20060235352A1 (en) * 2002-11-21 2006-10-19 Westfalische Wilhelms-Universitat Munster Gastric tube and method for introducing the same
US20060255170A1 (en) * 2005-03-17 2006-11-16 Kim Byung S Drinking straw
US20080128427A1 (en) * 2006-12-04 2008-06-05 Friedman Mark N Fluid drinking system
US20080227059A1 (en) * 2007-03-13 2008-09-18 Jong Hak Choi Educational Aid for Vocabulary and Recognition of Form Spatial Structure and Word Enigma Straws
US20100092309A1 (en) * 2008-10-14 2010-04-15 Farrell Hockemeier Drinking straw pump apparatus and method for using
CN103426350A (en) * 2012-05-25 2013-12-04 天津市天堰医教科技开发有限公司 Device simulating swallowing and implementation method thereof
US20150289694A1 (en) * 2012-11-28 2015-10-15 Young-joo Shin Contaminant backflow prevention straw and contaminant backflow prevention device having the same
US9370270B1 (en) * 2015-08-14 2016-06-21 Wei K. Hsu Sipping straw system and method of use

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US822356A (en) * 1904-01-19 1906-06-05 John B Foster And Brother Siphon.
US1382600A (en) * 1919-06-21 1921-06-21 Standard Scient Company Siphon
US1582399A (en) * 1925-11-02 1926-04-27 Victor W Helander Siphon pump
US1589222A (en) * 1925-06-09 1926-06-15 William H Pritchett Gasoline siphon for automobiles
US1762517A (en) * 1928-04-04 1930-06-10 Larson Ernest Cream siphon
US1941859A (en) * 1933-04-11 1934-01-02 Jackson W Hall Cream separator
US1994479A (en) * 1931-03-27 1935-03-19 Morrison Railway Supply Corp Method of welding alloy steels
US2063803A (en) * 1935-05-14 1936-12-08 Arthur P Gildersleeve Drinking tube
US2414697A (en) * 1945-09-11 1947-01-21 Everett W Pettersson Infant's drinking cup
US2811808A (en) * 1956-10-16 1957-11-05 John E Briese Drinking tube
US2882729A (en) * 1955-04-28 1959-04-21 Welser Morris Child's beverage dispenser

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US822356A (en) * 1904-01-19 1906-06-05 John B Foster And Brother Siphon.
US1382600A (en) * 1919-06-21 1921-06-21 Standard Scient Company Siphon
US1589222A (en) * 1925-06-09 1926-06-15 William H Pritchett Gasoline siphon for automobiles
US1582399A (en) * 1925-11-02 1926-04-27 Victor W Helander Siphon pump
US1762517A (en) * 1928-04-04 1930-06-10 Larson Ernest Cream siphon
US1994479A (en) * 1931-03-27 1935-03-19 Morrison Railway Supply Corp Method of welding alloy steels
US1941859A (en) * 1933-04-11 1934-01-02 Jackson W Hall Cream separator
US2063803A (en) * 1935-05-14 1936-12-08 Arthur P Gildersleeve Drinking tube
US2414697A (en) * 1945-09-11 1947-01-21 Everett W Pettersson Infant's drinking cup
US2882729A (en) * 1955-04-28 1959-04-21 Welser Morris Child's beverage dispenser
US2811808A (en) * 1956-10-16 1957-11-05 John E Briese Drinking tube

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4153170A (en) * 1977-05-02 1979-05-08 Aquarian Star T Apparatus for weaning children
US4398533A (en) * 1981-05-04 1983-08-16 Barker Randall R Drinking device for divers
US4607755A (en) * 1984-11-15 1986-08-26 Andreozzi William F Children's drinking vessel
US4699319A (en) * 1986-06-12 1987-10-13 Green Ethel F Apparatus for delivering drinks on demand
EP0390916A1 (en) * 1988-09-14 1990-10-10 Mallinckrodt, Inc. Device for the oral administration of a radioactive liquid
EP0390916A4 (en) * 1988-09-14 1991-03-13 Mallinckrodt, Inc. Device for the oral administration of a radioactive liquid
US5184774A (en) * 1991-05-13 1993-02-09 Eric Lipson Drinking straw assembly kit
US5725018A (en) * 1994-09-16 1998-03-10 Paczonay; Joseph R. Gravity check valve
US5806765A (en) * 1996-09-11 1998-09-15 Weinstein; Robert E. Liquid drinking assemblage and system
US6032873A (en) * 1998-10-26 2000-03-07 Weinstein; Robert E. Liquid drinking assemblage
WO2000071478A2 (en) * 1999-05-24 2000-11-30 Perez San Vicente Ruiz Jose Ar Methods for producing internally divided containers, bottles, glasses and the like and bifurcated straws and resulting products
WO2000071478A3 (en) * 1999-05-24 2001-04-26 San Vicente Ruiz Jose Ar Perez Methods for producing internally divided containers, bottles, glasses and the like and bifurcated straws and resulting products
US20030213733A1 (en) * 2000-05-08 2003-11-20 Scott Beckham Waste filter and manifold system
US7163618B2 (en) * 2000-05-08 2007-01-16 Stryker Corporation Multi-inlet port manifold for a medical waste receiver having an elevated filter element and tethered inlet port caps
US20030218076A1 (en) * 2002-03-29 2003-11-27 Donald Farnsworth Novelty pump straw with combined display area and prize delivery system
US20060235352A1 (en) * 2002-11-21 2006-10-19 Westfalische Wilhelms-Universitat Munster Gastric tube and method for introducing the same
US20100137783A1 (en) * 2002-11-21 2010-06-03 Westfalische Wilhelms-Universitat Munster Gastric tube and a method for introducing a gastric tube
US20060144955A1 (en) * 2003-03-27 2006-07-06 Donald Farnsworth Novelty pump straw with combined display area and prize delivery system
US20050092373A1 (en) * 2003-10-30 2005-05-05 Schafer Christopher E. Fluid retaining apparatus with ball valve
US8127789B2 (en) * 2003-10-30 2012-03-06 ARK Therapeutic Services, Inc. Fluid retaining apparatus with ball valve
US20060021996A1 (en) * 2004-07-30 2006-02-02 Scott L J Iii Multi-chambered drink bottle
US20060076252A1 (en) * 2004-10-12 2006-04-13 Magiccom Drinking straw kits and methods
US20060144439A1 (en) * 2004-12-30 2006-07-06 Bell Samuel R Siphon generator
US20060255170A1 (en) * 2005-03-17 2006-11-16 Kim Byung S Drinking straw
US20080128427A1 (en) * 2006-12-04 2008-06-05 Friedman Mark N Fluid drinking system
US20080227059A1 (en) * 2007-03-13 2008-09-18 Jong Hak Choi Educational Aid for Vocabulary and Recognition of Form Spatial Structure and Word Enigma Straws
US7789665B2 (en) * 2007-03-13 2010-09-07 Jong Hak Choi Educational aid for vocabulary and recognition of form spatial structure and word enigma straws
US20100092309A1 (en) * 2008-10-14 2010-04-15 Farrell Hockemeier Drinking straw pump apparatus and method for using
CN103426350A (en) * 2012-05-25 2013-12-04 天津市天堰医教科技开发有限公司 Device simulating swallowing and implementation method thereof
CN103426350B (en) * 2012-05-25 2017-02-08 天津天堰科技股份有限公司 Device simulating swallowing
US20150289694A1 (en) * 2012-11-28 2015-10-15 Young-joo Shin Contaminant backflow prevention straw and contaminant backflow prevention device having the same
US9370270B1 (en) * 2015-08-14 2016-06-21 Wei K. Hsu Sipping straw system and method of use

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