US3487828A - Spray nozzle - Google Patents

Spray nozzle Download PDF

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Publication number
US3487828A
US3487828A US620912A US3487828DA US3487828A US 3487828 A US3487828 A US 3487828A US 620912 A US620912 A US 620912A US 3487828D A US3487828D A US 3487828DA US 3487828 A US3487828 A US 3487828A
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United States
Prior art keywords
spray nozzle
liquid
outlet
tube
stream
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Expired - Lifetime
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US620912A
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English (en)
Inventor
Seymour L Troy
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AJ Armstrong Co Inc
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AJ Armstrong Co Inc
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
    • A61C17/0202—Hand-pieces
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
    • A61C17/028—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication with intermittent liquid flow

Definitions

  • This invention relates to a new and improved spray nozzle for use with oral hygiene appliances of the type which produce a stream of liquid to be directed against the teeth and gums for cleansing and massaging.
  • Oral lavage appliances of the type mentioned above may produce either a steady stream of liquid or a pulsating stream of liquid in which the pulsations are of variable frequency and kinetic energy to aid in cleansing the teeth and massaging the gums.
  • the steady of pulsating stream of liquid is directed through a spray nozzle and spray nozzle tip which must be inserted into the mouth so that all parts of the teeth and gums may be sprayed.
  • Spray nozzles presently used with such appliances are tapered to a reduced diameter at the tip or have sharp edges which may irritate ar scratch tender gums when inserted into the mouth.
  • Spray nozzles presently used also produce a single concentrated high-speed jet of liquid which massages the gums and dislodges food particles, but which does not cover a suflicient area to effectively flotation cleanse the mouth of particles so dislodged.
  • spray emerging from spray nozzle tips presently used with oral lavage appliances is subject to minor mechanical variations in the operation of the liquid pump and drive motor.
  • present spray nozzles produce air pockets between pulses resulting in erratic performance and sharp peaks.
  • a further object of the invention is to provide an improved spray nozzle with spray stability by providing a pre-loaded liquid head at the spray nozzle tip.
  • An additional object of the invention is to provide a spray nozzle whose tip is set at a convenient angle and formed with a rounded head so that when the nozzle is held by the hand in a relaxed position the liquid jet will 3,487,828 Patented Jan. 6, 1970 be directed at the teeth and gums with no danger of scratching or irritating tender or ailing gums.
  • Yet another object of the invention is to provide a spray nozzle for use with oral lavage appliances in conjunction with a toothbrush.
  • a spray nozzle comprising an elongated annular tube having therein a liquid channel terminating in a cavity at one end of the tube and having an outlet of reduced diameter leading from the cavity of the atmosphere flared at its outer end to thereby provide in addition to a concentrated jet stream of liquid, a surrounding diifuse fan stream of liquid when liquid is pumped through the liquid channel.
  • a toothbrush in conjunction with the spray nozzle, secured at the spray nozzle tip.
  • FIG. 1 is an environmental view of a spray nozzle embodying my invention in which the spray nozzle is shown in use with accessories of an oral hygiene appliance.
  • FIG. 2 is a cross-sectional side elevational view of the spray nozzle tip illustrated in FIG. 1.
  • FIG. 3 is a cross-sectional view of the spray nozzle tip illustrated in FIG. 2, along the line 3-3 in the direction of the arrows.
  • FIG. 4 is a side elevation cross-sectional view of another embodiment of my invention in which a toothbrush is provided in conjunction with a spray nozzle similar to the one illustrated in FIG. 2.
  • FIG. 5 is a side elevation view of the spray nozzle and toothbrush assembly illustrated in FIG. 4, looking down on the bristles.
  • FIG. 6 is a top elevation view of the spray nozzle and toothbrush assembly illustrated in FIG. 5.
  • FIG. 7 is a partially cross-sectional side elevation view of another spray nozzle and toothbrush assembly similar to the one illustrated in FIG. 4.
  • I provide an elongated tube 1 terminating at its outlet end in a rounded tip 2, and terminating at its inlet end in a coupling 3 adapted to be inserted into and held in water-tight relationship by the complementary coupling in an accessory of an oral hygiene appliance, which complementary coupling forms the liquid discharge outlet 30 of the oral hygiene appliance.
  • I also provide a hand grip 4 to facilitate handling the nozzle during use.
  • the oral hygiene appliance to which the spray nozzle is coupled may produce a steady stream of liquid or it may produce a pulsating stream of liquid in which the pulsations are of a variable frequency and kinetic energy.
  • the spray nozzle of the present invention has been successfully used with the oral hygiene appliance produced by Troy Industries, Tuckahoe, N.Y., under the trademark Dent-O-Pick.
  • the liquid discharge accessories of an oral hygiene appliance ll of this type are drawn in phantom in the environmental illustration of FIG. 1.
  • the liquid channel 5 of the spray nozzle tube 1 terminates in a cavity 6 at the spray nozzle tip 2.
  • the cavity 6 is formed by a bend 12 in the spray nozzle tube 1 near the end of the spray nozzle tube.
  • the angle of the bend should be such that when the spray nozzle is held in the hand at a comfortable position the stream of liquid from the tip of the nozzle will be directed towards the gums and teeth.
  • An angle of approximately to 130 has been found satisfactory, and approximately to preferable.
  • the dimension of the inner diameter of the liquid channel 5 in the spray nozzle tube is preferably reduced at the bend as illustrated in FIG. 3, thereby producing the reservior 6. If the spray nozzle were constructed without such a bend, the desired reservoir might be produced by a restriction in the liquid channel at a point near the tip. As an example, if the outer diameter of the annular tube of the spray nozzle is of the order of .187 inch, and the inner diameter of the liquid channel in the annular tube is of the order of .070 inch, then the inner diameter may be as small as .050 inch or .060 inch at the bend or restriction.
  • the reservoir or cavity 6 prevents run back of the liquid between pulses. Run back of the liquid may create undersirable air pockets in the liquid so that the pulsating stream is erratic, with sharp peaks.
  • the reservoir of liquid in the present invention produces a uniformly pulsating stream.
  • the reservoir should have a volume at least equal to the volume of water displaced during one cycle or pulsation by an oral lavage appliance pump. That is, the reservoir should have a volume at least equal to the volume of water discharged through the tip during each pulsation.
  • the pre-loaded liquid head in the reservoir dampens the effect of minor variations in the operation of the pump and driving motor of the oral lavage appliance on the stream of liquid sprayed from the nozzle tip.
  • the spray nozzle tip outlet 7 of reduced diameter Leading from the cavity 6 is the spray nozzle tip outlet 7 of reduced diameter.
  • the outlet 7 is flared at the outer surface of the spray nozzle tip to form a diverging mouth 8.
  • FIG. 3 is a cross-sectional view of the spray nozzle tip through the cavity 6.
  • the outlet 7 of reduced diameter from reservoir or cavity 6 and the flared mouth 8 of the outlet are shown.
  • the inner diameter of the outlet of reduced diameter is of the order of .025 inch and the inner diameter of the reservoir or cavity is of the order of .070 inch
  • the diameter of the flared portion of the outlet at the surface of the nozzle tip may be as wide as .065 or .070 inch.
  • liquid at least equal in volume to or in excess of what may be displaced from the spray nozzle outlet during one pulsation is pumped into the cavity 6 to provide a reservoir of liquid under pressure which acts as a stabilizer when producing a pulsating stream of liquid or in the event of minor variations in the operation of the pump and its driving motor when producing either a pulsating or steady stream thereby providing stability in the steady or pulsating liquid jet propelled from the spray nozzle outlet.
  • Liquid under pressure escaping through the outlet 7 of reduced diameter produces a central high-energy liquid stream 9.
  • the sudden drop in pressure encountered by the outer annular layers of liquid causes the outer annular layers to flare outward to form a diffuse fan stream of liquid surrounding the concentrated central liquid jet.
  • the central concentrated liquid jet dislodges food particles and massages the gums
  • the broader fan stream surrounding the central jet stream effectively irrigates wide areas of the mouth and removes dislodged particles by flotation cleansing. Turbulent movement of the volume of water moved through thespray nozzle tip outlet further effectively cleanses the mouth and stimulates the gums.
  • a toothbrush is provided in conjunction with the spray nozzle as illustrated in FIGS. 4-6.
  • tufts 14 of bristles are permanently held.
  • the base 13 is secured to th l g ted t be 1. of the pray nq zl j s below h spray nozzle tip 16.
  • the spray nozzle is similar to the one illustrated in FIG. 2 and includes a liquid channel 17, bend 18, reservoir 19, outlet 20, and flared mouth 21 at the discharge end of the outlet.
  • the base of the toothbrush and the annular tube of the spray nozzle may be formed as a unitary piece from material such as plastic, or as separate pieces secured together.
  • the spray nozzle tip projects in a direction parallel to the tufts of bristles, and perpendicular to the liquid channel in the elongated tube.
  • the spray nozzle and toothbrush are similar to that illustrated in FIGS. 4-6 except that the spray nozzle tip forms an angle of approximately with the liquid channel or approximately 25 with the tufts of bristles.
  • the elongated tube 22, liquid channel 23, reservoir 24, spray nozzle tip 25, outlet 26, flared mouth 27, toothbrush base 28, and tufts 29 of bristles are formed in the manners described above.
  • the elongated tube may be formed without a bend near the tip and the toothbrush secured adjacent the outlet.
  • the liquid channel may terminate in an outlet along the side of the tube near the tip rather than at the tip itself.
  • the bristles may be formed of a material having antifrictional nonstick releasing properties such as polytetrafluoroethylene or other fluorinated organic polymers so that they may be readily cleaned in water.
  • the spray and brush may be used simultaneously or the teeth may be first brushed and subsequently the teeth and gums subjected to the spray.
  • An improved spray nozzle for use in conjunction with an oral lavage appliance of the type that produces a pulsating stream of liquid comprising an elongated tube having therein a liquid channel terminating at one end of the tube in an outlet and providing at the opposite end of the tube an inlet to the liquid channel, said tube being bent near the outlet end thereof and the diameter of said tube necking down at said bend and thereafter flaring out to form a cavity of predetermined volume no smaller than the volume of liquid discharged in one pulsation of the spray nozzle disposed within said channel between said bend and said outlet end, said outlet having a diameter smaller than the diameter of the liquid channel and said outlet also being outwardly flared to a greater diameter at its discharge end to thereby provide in addition to a concentrated jet stream of liquid, a surrounding diffuse fan stream of liquid when liquid is pumped through the liquid channel.
  • a spray nozzle as set forth in claim 1 wherein there is provided a hand grip around the elongated tube near the inlet end of said tube.
  • a spray nozzle and tooth brush assembly for use in conjunction with an oral lavage appliance of the type that produces a pulsating stream of liquid
  • an oral lavage appliance of the type that produces a pulsating stream of liquid
  • said tube being bent near the outlet end thereof and the diameter of said tube necking d wn at sa d bend a d h eaf er flar g out o form a cavity of predetermined volume no smaller than the volume of liquid discharged in one pulsation of the spray nozzle disposed within said channel between said bend and said outlet end, said outlet having a diameter smaller than the diameter of the liquid channel and said outlet also being outwardly flared to a greater diameter at its discharge end to thereby provide in addition to a concentrated jet stream of liquid a surrounding diffuse fan stream of liquid when liquid is pumped through the liquid channel, and the toothbrush being formed of a base with tufts of bristles held there

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Brushes (AREA)
  • Nozzles (AREA)
US620912A 1967-03-06 1967-03-06 Spray nozzle Expired - Lifetime US3487828A (en)

Applications Claiming Priority (1)

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US62091267A 1967-03-06 1967-03-06

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US620912A Expired - Lifetime US3487828A (en) 1967-03-06 1967-03-06 Spray nozzle

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US (1) US3487828A (enrdf_load_stackoverflow)
BE (1) BE711775A (enrdf_load_stackoverflow)
FR (1) FR1561517A (enrdf_load_stackoverflow)
GB (1) GB1145400A (enrdf_load_stackoverflow)
LU (1) LU55622A1 (enrdf_load_stackoverflow)
NL (1) NL6802989A (enrdf_load_stackoverflow)

Cited By (93)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593707A (en) * 1968-09-25 1971-07-20 George William Pifer Jet tooth brush
US3608548A (en) * 1969-03-24 1971-09-28 Terreil D Lewis Oral hygiene device
US3610234A (en) * 1968-02-09 1971-10-05 Dennis G Oates Water-jet toothbrush
US3756225A (en) * 1972-03-09 1973-09-04 Wood Inst For Ind Research & D Method and apparatus for the practice of oral hygiene using a plurality of pulsated liquid jets
US3847145A (en) * 1973-04-13 1974-11-12 M Grossan Nasal irrigation system
US4094311A (en) * 1977-04-21 1978-06-13 Teledyne Industries, Inc. Dental syringe
DE2746453A1 (de) * 1977-10-15 1979-04-19 Wagner J Ag Spritzduese fuer mundduschen
US4161280A (en) * 1977-10-13 1979-07-17 State Of Connecticut Method and apparatus for dispensing a deicer liquid
US5390857A (en) * 1994-06-01 1995-02-21 Haldor Topsoe A/S Gas injector nozzle
USD363985S (en) 1993-09-23 1995-11-07 Van Hovel Dale J Portable oral and dental sprayer
US5934904A (en) * 1997-10-14 1999-08-10 Kreativ, Inc. Dental instrument and processes
US20010025672A1 (en) * 1998-02-26 2001-10-04 Thibault Jean Claude Vial transferset and method
US20040209222A1 (en) * 2002-12-31 2004-10-21 Snyder Clifford J. Hand held oral irrigator
USD530010S1 (en) 2004-03-17 2006-10-10 Water Pik, Inc. Base for an oral implement
US20070203439A1 (en) * 2006-02-24 2007-08-30 Water Pik, Inc. Water jet unit and handle
USD565175S1 (en) 2006-02-24 2008-03-25 Water Pik, Inc. Water jet base
USD574952S1 (en) 2006-02-24 2008-08-12 Water Pik, Inc. Water jet handle
US20100049159A1 (en) * 2006-04-12 2010-02-25 Fangrow Thomas F Vial adaptors and methods for regulating pressure
US7670141B2 (en) 2006-07-07 2010-03-02 Water Pik, Inc. Oral irrigator
US20100190132A1 (en) * 2009-01-28 2010-07-29 Water Pik, Inc. Oral irrigator tip
US20100304322A1 (en) * 2007-05-11 2010-12-02 Kaltenbach & [[B=]] Voigt GmbH Hand-held Device for Dispensing a Pasty Filling Material
USD629884S1 (en) 2009-12-16 2010-12-28 Water Pik, Inc. Powered irrigator for sinus cavity rinse
US20110225748A1 (en) * 2010-03-18 2011-09-22 Alphonsus Best Dental treatment instrument
USD655380S1 (en) * 2010-02-24 2012-03-06 Michael C. Taylor Handheld bidet and douche nozzle
USD670373S1 (en) 2010-12-16 2012-11-06 Water Pik, Inc. Powered irrigator for sinus cavity rinse
USD707350S1 (en) 2012-10-11 2014-06-17 Water Pik, Inc. Handheld water flosser
US8801667B2 (en) 2009-12-16 2014-08-12 Water Pik, Inc. Pump for powered irrigator for sinus cavity rinse
USD714929S1 (en) 2013-03-14 2014-10-07 Water Pik, Inc. Base for water flosser
USD714930S1 (en) 2013-03-14 2014-10-07 Water Pik, Inc. Reservoir for water flosser
USD717427S1 (en) 2013-03-14 2014-11-11 Water Pik, Inc. Handle for water flosser
USD725770S1 (en) 2013-03-14 2015-03-31 Water Pik, Inc. Reservoir for water flosser
USD772396S1 (en) 2014-12-01 2016-11-22 Water Pik, Inc. Handheld oral irrigator
USD772397S1 (en) 2014-12-01 2016-11-22 Water Pik, Inc. Oral irrigator with a charging device
USD780908S1 (en) 2015-11-03 2017-03-07 Water Pik, Inc. Handheld oral irrigator
USD782656S1 (en) 2016-01-25 2017-03-28 Water Pik, Inc. Oral irrigator
USD782657S1 (en) 2016-03-02 2017-03-28 Water Pik, Inc. Oral irrigator handle
USD783810S1 (en) 2016-02-22 2017-04-11 Water Pik, Inc. Handle for an oral irrigator
USD783809S1 (en) 2016-01-25 2017-04-11 Water Pik, Inc. Oral irrigator handle
USD786422S1 (en) 2016-01-25 2017-05-09 Water Pik, Inc. Oral irrigator
USD788907S1 (en) 2013-03-14 2017-06-06 Water Pik, Inc. Water flosser base unit with reservoir lid
USD794773S1 (en) 2016-07-19 2017-08-15 Water Pik, Inc. Oral irrigator
USD796028S1 (en) 2016-07-19 2017-08-29 Water Pik, Inc. Oral irrigator
USD802120S1 (en) 2007-02-27 2017-11-07 Water Pik, Inc. Tip for oral irrigator
USD802119S1 (en) 2016-03-02 2017-11-07 Water Pik, Inc. Oral irrigator
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USD819956S1 (en) 2016-01-25 2018-06-12 Water Pik, Inc. Kit bag
USD822196S1 (en) 2016-01-14 2018-07-03 Water Pik, Inc. Oral irrigator
US10016254B2 (en) 2013-12-20 2018-07-10 Water Pik, Inc. Dental water jet
USD822826S1 (en) 2016-12-15 2018-07-10 Water Pik, Inc. Oral irrigator base
USD822825S1 (en) 2016-12-15 2018-07-10 Water Pik, Inc. Oral irrigator unit
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EP3357454A1 (en) * 2017-02-07 2018-08-08 Panasonic Intellectual Property Management Co., Ltd. Oral cavity washing device and nozzle for the same
USD825741S1 (en) 2016-12-15 2018-08-14 Water Pik, Inc. Oral irrigator handle
USD829886S1 (en) 2016-12-15 2018-10-02 Water Pik, Inc. Oral irrigator base
USD829887S1 (en) 2017-02-06 2018-10-02 Water Pik, Inc. Oral irrigator reservoir
US10105201B2 (en) 2012-10-11 2018-10-23 Water Pik, Inc. Interdental cleaner using water supply
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USD833000S1 (en) 2016-12-15 2018-11-06 Water Pik, Inc. Oral irrigator unit
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USD840023S1 (en) 2016-12-15 2019-02-05 Water Pik, Inc. Oral irrigator reservoir
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CN109875709A (zh) * 2019-03-18 2019-06-14 四川大学 便携式正畸冲洗器
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US10650199B2 (en) 2005-02-07 2020-05-12 Steven Michael Colby Passport including metallic fibers
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US10993867B2 (en) 2016-03-02 2021-05-04 Water Pik, Inc. Actuation assembly for an oral irrigator
US11213376B2 (en) 2016-01-25 2022-01-04 Water Pik, Inc. Reduced form factor oral irrigator
US11317710B2 (en) * 2016-10-28 2022-05-03 Dyson Technology Limited Cleaning appliance
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USD966498S1 (en) 2020-09-15 2022-10-11 Water Pik, Inc. Oral irrigator
JP2023053129A (ja) * 2021-10-25 2023-04-12 パナソニックＩｐマネジメント株式会社 口腔洗浄装置およびそのノズルの製造方法
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US2920333A (en) * 1954-05-21 1960-01-12 Frank W Montague Fountain brush
DE1110133B (de) * 1958-01-20 1961-07-06 Du Pont Buerste mit einem Kunststoffborstenbesatz
US3198442A (en) * 1963-06-28 1965-08-03 Grace W R & Co Nozzles
US3225759A (en) * 1963-05-31 1965-12-28 Myron E Drapen Dental cleaning and massaging device
US3227158A (en) * 1961-05-08 1966-01-04 Aquatec Corp Method and apparatus for oral hygiene
US3300142A (en) * 1963-06-25 1967-01-24 Whittaker Corp Rocket nozzle capable of inducing flow separation

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US1543579A (en) * 1921-10-03 1925-06-23 William J Lauer Dental hot-air-syringe outlet
US1605456A (en) * 1924-05-26 1926-11-02 Mortka John Fountain toothbrush connection
US1660557A (en) * 1927-04-11 1928-02-28 Marquette Mfg Co Nozzle
US1958085A (en) * 1929-04-06 1934-05-08 George L Hammon Nozzle tip
US1995424A (en) * 1930-12-23 1935-03-26 Guinness Kenelm Edward Lee Reciprocating pump
US2920333A (en) * 1954-05-21 1960-01-12 Frank W Montague Fountain brush
DE1110133B (de) * 1958-01-20 1961-07-06 Du Pont Buerste mit einem Kunststoffborstenbesatz
US3227158A (en) * 1961-05-08 1966-01-04 Aquatec Corp Method and apparatus for oral hygiene
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US3300142A (en) * 1963-06-25 1967-01-24 Whittaker Corp Rocket nozzle capable of inducing flow separation
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Cited By (159)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610234A (en) * 1968-02-09 1971-10-05 Dennis G Oates Water-jet toothbrush
US3593707A (en) * 1968-09-25 1971-07-20 George William Pifer Jet tooth brush
US3608548A (en) * 1969-03-24 1971-09-28 Terreil D Lewis Oral hygiene device
US3756225A (en) * 1972-03-09 1973-09-04 Wood Inst For Ind Research & D Method and apparatus for the practice of oral hygiene using a plurality of pulsated liquid jets
US3847145A (en) * 1973-04-13 1974-11-12 M Grossan Nasal irrigation system
US4094311A (en) * 1977-04-21 1978-06-13 Teledyne Industries, Inc. Dental syringe
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FR1561517A (enrdf_load_stackoverflow) 1969-03-28
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