EP2029249A2 - Pistolet à eau à jet constant - Google Patents

Pistolet à eau à jet constant

Info

Publication number
EP2029249A2
EP2029249A2 EP07845227A EP07845227A EP2029249A2 EP 2029249 A2 EP2029249 A2 EP 2029249A2 EP 07845227 A EP07845227 A EP 07845227A EP 07845227 A EP07845227 A EP 07845227A EP 2029249 A2 EP2029249 A2 EP 2029249A2
Authority
EP
European Patent Office
Prior art keywords
water
pressure chamber
pump
nozzle
water gun
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Withdrawn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
EP07845227A
Other languages
German (de)
English (en)
Other versions
EP2029249A4 (fr
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.)
Buzz Bee Toys HK Co Ltd
Original Assignee
Buzz Bee Toys HK Co Ltd
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 Buzz Bee Toys HK Co Ltd filed Critical Buzz Bee Toys HK Co Ltd
Publication of EP2029249A2 publication Critical patent/EP2029249A2/fr
Publication of EP2029249A4 publication Critical patent/EP2029249A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B9/00—Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure
    • F41B9/0003—Liquid 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
    • F41B9/0006—Liquid 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
    • F41B9/0009—Liquid 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
    • F41B9/0012—Liquid 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B9/00—Liquid ejecting guns, e.g. water pistols, devices ejecting electrically charged liquid jets, devices ejecting liquid jets by explosive pressure
    • F41B9/0003—Liquid 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
    • F41B9/0031—Liquid 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
    • F41B9/0037—Pressurisation by a piston

Definitions

  • 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. Patent 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.
  • water is ejected from the toy gun.
  • U.S. Patent 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.
  • 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.
  • 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.
  • 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.
  • Figure 1 is a left side elevational view of a water gun in accordance with the present invention.
  • Figure 2 is a right side elevational view, partially in cross- section, of the water gun shown in Figure 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 [0017] 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.
  • 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.
  • 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
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the main housing 12 and supply tank 18 are made of molded plastic.
  • 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 chambeT 40.
  • 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 Figures 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.
  • 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.
  • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)

Abstract

L'invention concerne un pistolet à eau d'amusement comprenant un boîtier principal comportant une poignée ainsi qu'un embout d'éjection d'eau. Un réservoir d'alimentation en eau est connecté au boîtier principal et peut être rempli d'eau. Une pompe est située sur le boîtier pour permettre de pomper l'eau du réservoir d'alimentation vers une chambre sous pression située sur le boîtier principal. La chambre sous pression comprend un piston définissant une des parois d'un espace de confinement d'eau et pouvant être déplacé de sa position neutre dans l'enveloppe de la chambre sous pression grâce à une force de déplacement de façon qu'un jet d'eau constant soit éjecté du pistolet à eau par un embout connecté à la chambre sous pression.
EP07845227A 2006-06-16 2007-06-18 Pistolet à eau à jet constant Withdrawn EP2029249A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US80496706P 2006-06-16 2006-06-16
US11/684,750 US20070289995A1 (en) 2006-06-16 2007-03-12 Steady stream water gun
PCT/US2007/014170 WO2007149374A2 (fr) 2006-06-16 2007-06-18 Pistolet à eau à jet constant

Publications (2)

Publication Number Publication Date
EP2029249A2 true EP2029249A2 (fr) 2009-03-04
EP2029249A4 EP2029249A4 (fr) 2010-10-20

Family

ID=38834036

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07845227A Withdrawn EP2029249A4 (fr) 2006-06-16 2007-06-18 Pistolet à eau à jet constant

Country Status (4)

Country Link
US (1) US20070289995A1 (fr)
EP (1) EP2029249A4 (fr)
AU (1) AU2007261483A1 (fr)
WO (1) WO2007149374A2 (fr)

Families Citing this family (3)

* 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
CH713274A2 (de) * 2016-12-22 2018-06-29 Juerg Thomann Vorrichtung zum Verschiessen eines Projektils.
US20190113302A1 (en) * 2017-10-13 2019-04-18 One Gun Holding, LLC, Water blaster

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2113446A (en) * 1982-01-13 1983-08-03 Sir Patrick Alexander Be Grant Mouthpiece for bagpipes
US20030010401A1 (en) * 2001-07-16 2003-01-16 Frank Marino High-power squirt gun

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249268B (en) * 1990-09-06 1994-08-03 Lonnie George Johnson 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
US5322191A (en) * 1990-09-06 1994-06-21 Johnson Lonnie G Low pressure, high volume pressurized water gun
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
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
DE19702773A1 (de) * 1997-01-27 1998-07-30 Brand Gmbh & Co Flaschenaufsatzdispenser
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
IL121611A0 (en) * 1997-08-24 1998-02-08 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
WO2001023059A1 (fr) * 1999-09-30 2001-04-05 Trendmasters, Inc. Jouet du type pistolet a eau
US6935531B1 (en) * 2001-06-25 2005-08-30 Richard A. Clayton Toy water gun
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2113446A (en) * 1982-01-13 1983-08-03 Sir Patrick Alexander Be Grant Mouthpiece for bagpipes
US20030010401A1 (en) * 2001-07-16 2003-01-16 Frank Marino High-power squirt gun

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
See also references of WO2007149374A2 *
THE ISOAKER NETWORK: 'Monster XL Trigger Valve Problem', [Online] 12 November 2005, Retrieved from the Internet: <URL:http://www.isoaker.net/isnet/topic2391.html> [retrieved on 2011-09-21] & WIKIPEDIA: 'Super Soaker', [Online] 16 August 2011, Retrieved from the Internet: <URL:http://en.wikipedia.org/wiki/Super_Soaker> [retrieved on 2011-09-20] *

Also Published As

Publication number Publication date
WO2007149374A3 (fr) 2008-09-04
US20070289995A1 (en) 2007-12-20
EP2029249A4 (fr) 2010-10-20
AU2007261483A1 (en) 2007-12-27
WO2007149374A2 (fr) 2007-12-27

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