US20070289995A1 - Steady stream water gun - Google Patents

Steady stream water gun Download PDF

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Publication number
US20070289995A1
US20070289995A1 US11/684,750 US68475007A US2007289995A1 US 20070289995 A1 US20070289995 A1 US 20070289995A1 US 68475007 A US68475007 A US 68475007A US 2007289995 A1 US2007289995 A1 US 2007289995A1
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US
United States
Prior art keywords
water
pressure chamber
pump
water gun
nozzle
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.)
Abandoned
Application number
US11/684,750
Inventor
Jeffrey C. Zimmerman
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.)
ALEX BRANDS BUZZ BEE HOLDINGS LLC
Original Assignee
Buzz Bee Toys 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
Priority to US80496706P priority Critical
Application filed by Buzz Bee Toys Inc filed Critical Buzz Bee Toys Inc
Priority to US11/684,750 priority patent/US20070289995A1/en
Assigned to BUZZ BEE TOYS, INC. reassignment BUZZ BEE TOYS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ZIMMERMAN, JEFFREY C.
Publication of US20070289995A1 publication Critical patent/US20070289995A1/en
Assigned to ALEX BRANDS BUZZ BEE HOLDINGS, LLC reassignment ALEX BRANDS BUZZ BEE HOLDINGS, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BUZZ BEE TOYS, INC.
Abandoned legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41BWEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B9/00Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure
    • F41B9/0003Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure characterised by the pressurisation of the liquid
    • F41B9/0006Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure characterised by the pressurisation of the liquid the liquid being pressurised prior to ejection
    • F41B9/0009Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure characterised by the pressurisation of the liquid the liquid being pressurised prior to ejection the pressurised liquid being contained in an expandable chamber, e.g. a bladder or a chamber with a spring-loaded slidable wall
    • F41B9/0012Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure characterised by the pressurisation of the liquid the liquid being pressurised prior to ejection the pressurised liquid being contained in an expandable chamber, e.g. a bladder or a chamber with a spring-loaded slidable wall the gun having an unpressurised liquid reservoir
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41BWEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B9/00Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure
    • F41B9/0003Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure characterised by the pressurisation of the liquid
    • F41B9/0031Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure characterised by the pressurisation of the liquid the liquid being pressurised at the moment of ejection
    • F41B9/0037Pressurisation by a piston

Abstract

A toy water gun is provided which includes a main housing having a handle as well as a water ejection nozzle located thereon. A water supply tank is connected to the main housing which can be filled with water. A pump is located on the housing for pumping water from the supply tank to a pressure chamber located on the main housing. The pressure chamber includes a piston which defines one wall of a water containment space and can be displaced from its neutral position in the pressure chamber housing against a biasing force so that a steady stream of water is discharged from water gun through a nozzle connected to the pressure chamber.

Description

    CROSS REFERENCE TO RELATED APPLICATION
  • This application claims the benefit of U.S. provisional application No. 60/804,967, filed Jun. 16, 2006 which is incorporated by reference herein as if fully set forth.
  • BACKGROUND
  • The present invention is directed to a gun and more particularly, to a water gun having a more steady discharge stream of water.
  • Toy water guns are known which utilize pressurized air or a pressurized bladder as the motive force for discharging water from the gun upon release of a nozzle valve.
  • U.S. Pat. No. 5,799,827 discloses a water gun having a tubular bladder arranged in a tubular holding member as the motive force for water discharge. A separate water tank is located on the gun which holds water at ambient pressure. A pump located on the gun is utilized to transfer water from the ambient pressure water tank into the bladder, expanding the bladder. Upon release of a nozzle valve using a trigger, water is ejected from the toy gun.
  • U.S. Pat. No. 5,878,914 discloses a similar toy water gun utilizing a water tank with water at ambient pressure, a pump and a balloon-shaped bladder located in a bladder chamber. Specialized valving means are provided to restrict air in the water reservoir from being pumped into the bladder. Water is released by pulling a trigger. An alternate type of pressure chamber is also described in which the pressure chamber is formed by a spring-loaded wall which can be compressed within a chamber.
  • A drawback with these prior known types of arrangements is that it is difficult and costly to produce a tubular or balloon-shaped bladder economically and with the desired characteristics to provide for fluid discharge with a relatively constant pressure during the entire discharge operation. Costs are further increased by the complex construction and the requirement for a trigger mechanism and release valve. Additionally, it is often difficult for a user to pull the trigger and pump the water gun at the same time, resulting in poor aim or an unintended drop-off in available pressure when shooting. However, functional triggers to release water from a water gun are provided in even the cheapest of water guns as they are generally expected by users.
  • SUMMARY
  • Briefly stated, the present invention provides a water gun that includes a main housing having a handle and a water ejection nozzle located thereon. A water supply tank is connected to the main housing which can be filled with water. A pump is located on the housing for pumping water from the supply tank and forcing the water into a water containment space in the pressure chamber housing having a wall defined by a piston in order to displace the piston against a biasing force of the spring. As soon as the pressure chamber receives pressurized water from the pump, it begins discharging the water through the ejection nozzle, allowing a steady stream of water to be immediately ejected from the water gun, even during pumping, without the need for the user to have the required dexterity to pull the trigger and pump at the same time.
  • In another aspect of the invention, the nozzle is sized to be small enough that a stream of water can be ejected 20 feet or more when the pressure chamber has pressurized water therein.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The foregoing summary, as well as the following detailed description of the preferred embodiment of the present invention will be better understood when read in conjunction with the appended drawings. For the purposes of illustrating the invention, there is shown in the drawings an embodiment which is currently preferred. It should be understood, however, that the invention is not limited to the precise arrangement shown.
  • FIG. 1 is a left side elevational view of a water gun in accordance with the present invention.
  • FIG. 2 is a right side elevational view, partially in cross-section, of the water gun shown in FIG. 1 in which the water supply tank, pump, pressure chamber and nozzle are shown in detail.
  • FIG. 3 is schematic view showing the arrangement of the components of a water gun in accordance with the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Certain terminology is used in the following description for convenience only and is not considered limiting. The words “left”, “right”, “lower” and “upper” designate directions in the drawings to which reference is made. Additionally, the terms “a” and “one” are defined as including one or more of the referenced item unless specifically noted.
  • Referring now to FIGS. 1 and 2, the water gun 10 in accordance with the present invention is shown. The water gun 10 includes a main housing, generally indicated as 12, having a handle 14 located thereon. A water supply tank 18 having an inlet 20 which can be filled with water at ambient pressure is connected to the housing 12. A screw-on or snap-on cap 22 is preferably provided on the supply tank 18. A pump 26 is connected to the housing and includes a pump handle 28 which can be moved back-and-forth in order to draw water from the supply tank 18 via a conduit 30 into the pump 26, and to force water out of the pump 26 via a conduit 32 toward the pressure chamber 40. The pump handle 28 is preferably located generally on an opposite side of the housing from the handle 14. Pumps such as the pump 26 are generally known in the water gun art, and will therefore not be described in further detail.
  • Preferably, a check valve 24 is located in or along the conduit 30 between the supply tank 18 and the pump 26 to prevent water from being forced back into the supply tank 18. A check valve 36 is located along the conduit 32 such that water cannot be forced backward from the pressure chamber 40 back to the pump 26.
  • The pressure chamber 40 includes a pressure chamber housing 42, which is preferably cylindrical in form with a constant cross section, and can be inexpensively made from a tube. A first end of the pressure chamber housing 42 is closed by an end wall 44, preferably formed as a separately attachable cap. A second end of the pressure chamber housing 42 is closed by a nozzle cap 46, which includes the nozzle 48 located at the front end thereof, which is preferably an integrally molded, one piece construction. The nozzle 48 preferably tapers from a larger open area at the end of the pressure chamber housing 42 to a smaller diameter nozzle opening. In a preferred embodiment, the pressure chamber housing 42 is a tube with a diameter of about 1.5-2 inches. The nozzle opening at the tip of the nozzle 48 preferably has a diameter of about 0.0625-0.125 inches. These sizes along with the selection of a piston spring (described below) with a sufficient spring constant are adapted to provide a strong, steady stream of water that is discharged from the nozzle to a distance of at least about 20 feet. However, the sizes can be varied to suit particular applications.
  • A moveable piston 50 is displaceably located in the pressure chamber housing 42, and is biased toward the nozzle cap 46 by a spring 52, which preferably exerts a generally constant force on the piston 50. The piston 50 defines a movable wall that allows the water containment space in the pressure chamber 40 to increase or decrease. The front end of the piston 50 preferably includes a circumferential groove 54 in which an o-ring 56 or other seal is seated. The spring 52 can be a coil spring, as illustrated, an air spring, or any other suitable type of spring arrangement that has a sufficient k value to eject a water stream the desired distance.
  • In use, water is pumped using the pump 26 from the supply reservoir 18 into the water containment space in the pressure chamber 40, forcing the piston 50 to be displaced against the force of the spring 52, while simultaneously shooting water from the nozzle 48. Water is ejected from the nozzle 48 in a steady stream as the pump forces water into the pressure chamber 40 to expand the containment space and as the spring 52 forces the piston 50 back toward its neutral position when the pump is not being actuated, shrinking the containment space. Based on the relatively small opening in the nozzle 48, a substantial reserve of pressurized water can be built up in the pressure chamber 40 during pumping. This provides a substantial amount of time for shooting water, which is held in a pressurized state in the pressure chamber 40, from the water gun 10.
  • Those skilled in the art will recognize that the shape of the main housing 12 may be varied and that one or more pressure chambers 40 may be utilized in connection with the water gun 10 in accordance with the present invention. Preferably, the main housing 12 and supply tank 18 are made of molded plastic.
  • Additionally, as shown in FIG. 1, it is preferred that the main housing 12 includes a window 16 in proximity to the pressure chamber housing 42, and that the pressure chamber housing 42 is formed from a generally transparent polymeric material. A user can then observe the position of the piston 50 as well as possibly the spring 52, and therefore determine how much of a pressurized water charge remains in the pressure chamber 40.
  • Referring now to FIG. 3, a schematic diagram of a water gun 10 is shown. The pressurized water source 26′ is not limited to the preferred hand pump 26 shown in FIGS. 1 and 2, which is used to draw water from the water supply tank 18 and force it into the pressure chamber 40. It is also possible to use other means for pressurizing the water, such as a battery operated on-board pump located on or in the housing 12, or to provide a connection to an external pressurized water source for charging the pressure chamber 40.
  • In the preferred embodiment of the invention, no trigger or nozzle valve is provided, making the water gun simple and easy to operate and allowing a user to continue to shoot water while pumping water into the pressure chamber 40. This allows more enjoyment for younger children and others with more limited dexterity who otherwise may become frustrated with trying to pull a trigger and pump the water gun at the same time, as required in the known prior art water guns.
  • While the preferred embodiment of the invention has been described in detail, the invention is not limited to the specific embodiments described above, which should be considered as merely exemplary. Further modifications and extensions of the present invention may be developed, and all such modifications are deemed to be within the scope of the present invention as defined above and by the appended claims.

Claims (10)

1. A water gun, comprising:
a main housing;
a supply tank connected to the main housing;
a pressure chamber connected to the main housing, including a pressure chamber housing with a spring loaded piston located therein;
a pump for drawing water from the supply tank and forcing the water into a water containment space in the pressure chamber housing to displace the piston against a biasing force of the spring; and
a nozzle in direct, uninterruptible communication with the pressure chamber to discharge water from the water gun.
2. The water gun of claim 1, wherein the pressure chamber comprises a cylindrical tube with a first closed end cap and a second end cap that includes the nozzle, and one end of the spring rests against the first end cap.
3. The water gun of claim 2, wherein the second end cap and the nozzle are integrally molded in one piece.
4. The water gun of claim 2, wherein the cylindrical tube is made of a clear polymeric material, and a window is provided in the main housing so that a position of the piston in the pressure chamber is externally observable by a user.
5. The water gun of claim 2, wherein the cylindrical tube has a diameter from about 1.5 inches to 2 inches, and the nozzle has an opening with a diameter of about 0.062 to about 0.125 inches.
6. The water gun of claim 1, wherein a first check valve is located between the water supply tank and the pump, and a second check valve is located between the pump and the pressure chamber.
7. The water gun of claim 1, wherein an interior of the pressure chamber with the pressurized water is in direct uninterruptible communication with the nozzle for ejecting water.
8. The water gun of claim 1, wherein the pump is battery powered.
9. The water gun of claim 1, wherein the pump is manually actuateable.
10. A method of operating a water gun, comprising:
providing a water gun, a main housing, a supply tank connected to the main housing, a pressure chamber connected to the main housing, including a pressure chamber housing with a spring loaded piston located therein, a pump for drawing water from the supply tank and forcing the water into the pressure chamber housing to displace the piston against a biasing force of the spring, and a nozzle in direct, uninterrupted communication with a containment space of the pressure chamber, to discharge water from the water gun;
a user holding the housing with a first hand and actuating the pump with a second hand
simultaneously ejecting water from the nozzle and displacing the spring loaded piston in the pressure chamber with pressurized water from the pump to create a pressurized water reservoir; and
continuing to eject water from the nozzle of the water gun after ceasing to actuate the pump.
US11/684,750 2006-06-16 2007-03-12 Steady stream water gun Abandoned US20070289995A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US80496706P true 2006-06-16 2006-06-16
US11/684,750 US20070289995A1 (en) 2006-06-16 2007-03-12 Steady stream water gun

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11/684,750 US20070289995A1 (en) 2006-06-16 2007-03-12 Steady stream water gun
EP07845227A EP2029249A4 (en) 2006-06-16 2007-06-18 Steady stream water gun
AU2007261483A AU2007261483A1 (en) 2006-06-16 2007-06-18 Steady stream water gun
PCT/US2007/014170 WO2007149374A2 (en) 2006-06-16 2007-06-18 Steady stream water gun

Publications (1)

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US20070289995A1 true US20070289995A1 (en) 2007-12-20

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ID=38834036

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US11/684,750 Abandoned US20070289995A1 (en) 2006-06-16 2007-03-12 Steady stream water gun

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US (1) US20070289995A1 (en)
EP (1) EP2029249A4 (en)
AU (1) AU2007261483A1 (en)
WO (1) WO2007149374A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080245815A1 (en) * 2007-04-04 2008-10-09 Chor-Ming Ma Pressurised toy water gun
US20180216909A1 (en) * 2016-12-22 2018-08-02 Juerg THOMANN Spray device

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5074437A (en) * 1990-09-06 1991-12-24 D'andrade Bruce M Pinch trigger pump water gun
US5150819A (en) * 1990-09-06 1992-09-29 Johnson Lonnie G Double tank pinch trigger pump water gun
US5305919A (en) * 1990-09-06 1994-04-26 Johnson Lonnie G Pinch trigger hand pump water gun with non-detachable tank
US5322191A (en) * 1990-09-06 1994-06-21 Johnson Lonnie G Low pressure, high volume pressurized water gun
US5722566A (en) * 1996-03-11 1998-03-03 Ideal Ideas, Inc. Double action water gun
US5779100A (en) * 1996-08-07 1998-07-14 Johnson Research & Development Corp, Inc. Vacuum actuated replenishing water gun
US5799827A (en) * 1996-06-28 1998-09-01 D'andrade; Bruce M. Bladder water gun
US5865344A (en) * 1997-09-04 1999-02-02 Nagel; Dietmar Water gun with refillable pressurized bladder chamber
US5875927A (en) * 1997-08-04 1999-03-02 D'andrade; Bruce M. Toy gun having an expandable tear drop shaped bladder for ejection of liquid therefrom
US5878914A (en) * 1995-03-13 1999-03-09 Johnson Research & Development Company, Inc. Toy water gun
US6015067A (en) * 1997-01-27 2000-01-18 Brand Gmbh + Co. Bottle top dispenser
US6123229A (en) * 1997-08-24 2000-09-26 Barish; Benjamin J. Water discharge device particularly useful as toy water gun
US6167925B1 (en) * 1998-06-11 2001-01-02 D'andrade Bruce M. Bladder water gun with pump and quick charge system
US6474507B1 (en) * 1999-09-30 2002-11-05 Trendmasters, Inc. Water gun amusement device
US6540108B1 (en) * 1995-03-13 2003-04-01 Johnson Research & Development Co., Inc. Toy water gun
US20050072794A1 (en) * 2003-10-06 2005-04-07 Zimmerman Jeffrey C. Water gun with adjustable force pressure chamber
US6935531B1 (en) * 2001-06-25 2005-08-30 Richard A. Clayton Toy water gun
US7032837B2 (en) * 2004-02-06 2006-04-25 Hasbro Inc. Toy water gun with variable spray patterns
US7131557B2 (en) * 2004-01-30 2006-11-07 Buzz Bee Toys, Inc. Single pump water gun with adjustable force pressure chamber

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GB2113446A (en) * 1982-01-13 1983-08-03 Sir Patrick Alexander Be Grant Mouthpiece for bagpipes
US6651702B2 (en) * 2001-07-16 2003-11-25 Frank Marino High-power squirt gun

Patent Citations (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5074437A (en) * 1990-09-06 1991-12-24 D'andrade Bruce M Pinch trigger pump water gun
US5150819A (en) * 1990-09-06 1992-09-29 Johnson Lonnie G Double tank pinch trigger pump water gun
US5305919A (en) * 1990-09-06 1994-04-26 Johnson Lonnie G Pinch trigger hand pump water gun with non-detachable tank
US5322191A (en) * 1990-09-06 1994-06-21 Johnson Lonnie G Low pressure, high volume pressurized water gun
USRE35412E (en) * 1990-09-06 1996-12-31 Larami Limited Double tank pinch trigger pump water gun
US5305919B1 (en) * 1990-09-06 1997-12-16 Larami Limited Pinch trigger hand pump water gun with non-detachable tank
US5074437B1 (en) * 1990-09-06 1997-12-16 Larami Limited Pinch trigger pump water gun
US6540108B1 (en) * 1995-03-13 2003-04-01 Johnson Research & Development Co., Inc. Toy water gun
US5878914A (en) * 1995-03-13 1999-03-09 Johnson Research & Development Company, Inc. Toy water gun
USRE39947E1 (en) * 1995-03-13 2007-12-25 Johnson Research & Development Co., Inc. Toy water gun
US5722566A (en) * 1996-03-11 1998-03-03 Ideal Ideas, Inc. Double action water gun
US5799827A (en) * 1996-06-28 1998-09-01 D'andrade; Bruce M. Bladder water gun
US5779100A (en) * 1996-08-07 1998-07-14 Johnson Research & Development Corp, Inc. Vacuum actuated replenishing water gun
US6015067A (en) * 1997-01-27 2000-01-18 Brand Gmbh + Co. Bottle top dispenser
US5875927A (en) * 1997-08-04 1999-03-02 D'andrade; Bruce M. Toy gun having an expandable tear drop shaped bladder for ejection of liquid therefrom
US6123229A (en) * 1997-08-24 2000-09-26 Barish; Benjamin J. Water discharge device particularly useful as toy water gun
US5865344A (en) * 1997-09-04 1999-02-02 Nagel; Dietmar Water gun with refillable pressurized bladder chamber
US6167925B1 (en) * 1998-06-11 2001-01-02 D'andrade Bruce M. Bladder water gun with pump and quick charge system
US6474507B1 (en) * 1999-09-30 2002-11-05 Trendmasters, Inc. Water gun amusement device
US6935531B1 (en) * 2001-06-25 2005-08-30 Richard A. Clayton Toy water gun
US20050072794A1 (en) * 2003-10-06 2005-04-07 Zimmerman Jeffrey C. Water gun with adjustable force pressure chamber
US7097073B2 (en) * 2003-10-06 2006-08-29 Buzz Bee Toys, Inc. Water gun with adjustable force pressure chamber
US7131557B2 (en) * 2004-01-30 2006-11-07 Buzz Bee Toys, Inc. Single pump water gun with adjustable force pressure chamber
US7032837B2 (en) * 2004-02-06 2006-04-25 Hasbro Inc. Toy water gun with variable spray patterns

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080245815A1 (en) * 2007-04-04 2008-10-09 Chor-Ming Ma Pressurised toy water gun
US20180216909A1 (en) * 2016-12-22 2018-08-02 Juerg THOMANN Spray device

Also Published As

Publication number Publication date
WO2007149374A3 (en) 2008-09-04
AU2007261483A1 (en) 2007-12-27
EP2029249A2 (en) 2009-03-04
EP2029249A4 (en) 2010-10-20
WO2007149374A2 (en) 2007-12-27

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Legal Events

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AS Assignment

Owner name: BUZZ BEE TOYS, INC., NEW JERSEY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ZIMMERMAN, JEFFREY C.;REEL/FRAME:018995/0059

Effective date: 20070226

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION

AS Assignment

Owner name: ALEX BRANDS BUZZ BEE HOLDINGS, LLC, NEW JERSEY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BUZZ BEE TOYS, INC.;REEL/FRAME:036011/0720

Effective date: 20150508