US3743186A - Air gun - Google Patents

Air gun Download PDF

Info

Publication number
US3743186A
US3743186A US00234535A US3743186DA US3743186A US 3743186 A US3743186 A US 3743186A US 00234535 A US00234535 A US 00234535A US 3743186D A US3743186D A US 3743186DA US 3743186 A US3743186 A US 3743186A
Authority
US
United States
Prior art keywords
bore
exit
air
slit
entrance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00234535A
Other languages
English (en)
Inventor
Z Mocarski
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.)
SRC LAB
SRC LABOR INC US
Original Assignee
SRC LAB
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 SRC LAB filed Critical SRC LAB
Application granted granted Critical
Publication of US3743186A publication Critical patent/US3743186A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/22—Safety air nozzles

Definitions

  • ABSTRACT An air gun for providing a stream of air comprising a hollow tube having an entrance open to the atmosphere, an intermediate throat and an exit with pressurized air being directed through a small slit adjacent the throat to combine with air from the atmosphere and be ejected from the exit as a usable stream.
  • the pressurized air is safely directed from the gun by other than the exit when the exit is closed to prevent a pressure buildup at the exit.
  • the present invention has especial utility in a manufacturing establishment where a stream of air is directed by an operator to perform a function, such as blowing refuse from a work station.
  • a function such as blowing refuse from a work station.
  • proposed air guns have basically consisted only of a piece of pipe having one end connected to a source of pressurized air and its other end open and through which the air is ejected with a valve controlling the quantity of air that flows.
  • Such a construction is finding increasing objection in view of safety regulations which set the maximum pressure which can appear at the exit end if it is closed. While efforts to adapt such air guns to conform to these regulations have been made, they have not been completely satisfactory as they tend to even more decrease the efficiency and effectiveness of such a gun.
  • Another object of the present invention is to provide an air gun that is more efficient in forming the stream than heretofore known devices by also including ambient air in the stream in addition to the compressed air to thereby provide a stream having an effective working force.
  • a further object of the present invention is to obtain the above objects with an air gun that is extremely simple in construction, reliable and durable in use and economical to manufacture.
  • a handle that includes a passageway that has one end adapted to be connected to a source of pressurized air and its other end terminate in a slit formed in a nozzle.
  • a manually operated valve is provided for controlling the flow of air to the slit.
  • the nozzle is formed to have an unobstructed bore with the pressurized air passing from the slit through the bore to be discharged at the exit end of the nozzle.
  • the nozzle is shaped such that it utilizes the compressed air through the slit to induce the flow of ambient air through the other end or entrance of the bore so that the exited stream consists not only of the pressurized air from the slit but also ambient air.
  • the mass of the stream is greater than that of just the pressurized air which accordingly enhances the working force of the stream over just pressurized air alone.
  • the nozzle prevents build-up of pressure at the exit, thereby effecting conformity with safety regulations.
  • the nozzle inherently reverses the direction of flow of the pressurized air through the slit when the exit is blocked and causes it to be discharged from the entrance.
  • the user is protected from the reverse flow by a shield normally located between the entrance and the user and specifically consists of a hook portion of the handle.
  • one or more openings may communicate with the bore to permit the escape of pressurized air which tends to limit the reversal of movement of the air.
  • the compressed air from the slit can be safely directed away from the nozzle when the exit is closed without a pressure build-up and without interference with the normal efficiency of the nozzle.
  • the opening may be used normally for providing a screen of air to prevent flyback of the refuse.
  • the present invention is primarily an air gun for providing a working stream of air, it is also contemplated that the gun may be also employed as an atomizing device if there is provided a tube for conducting the atomized fluid from the container to adjacent the slit in the bore to intermix the fluid with the discharged stream.
  • FIG. 1 is a side view, mostly in section, of one embodiment of the air gun of the present invention.
  • FIG. 2 is a partial front view, looking in the direction of the arrows 2-2 of another embodiment of the air gun of the present invention.
  • FIG. 3 is a view similar to FIG. 2 of another embodiment.
  • FIG. 4 1s a plan view of an annular spacer.
  • FIG. 5 is a plan view of a different annular spacer.
  • FIG. 6 is an enlarged detail, in cross-section, of the slit portion of the nozzle.
  • FIG. 7 is a cross-section of a nozzle (somewhat enlarged) showing the positioning of a tube at the slit for enabling atomization of a fluid.
  • the air gun of the present invention is generally indicated by the reference numeral l0 and includes a handle 11 preferably formed of one piece of metal to include a hook 12 for supporting it.
  • a passageway 13 is formed through the handle and includes at one end a threaded opening 14 in which an air hose connector 15 may be secured for enabling connection to a source of air under pressure.
  • the threaded portion 14 communicates with a portion 16 of the passageway which is preferably enlarged to enable a filter to be positioned therein if desired.
  • the passageway leads from the portion 16 to a spring-urged, normally closed valve 17 having a plunger 18 which is actuated, in the manually operated embodiment of the present invention herein disclosed, by a pivoted trigger 19. Operation of the trigger 19 opens the valve 17 to permit compressed air to pass into another portion 20 of the passageway, through a tube 21 that is secured as by set screw 22 to the handle 11 and into an annular cavity 23 formed in a nozzle 24.
  • the nozzle 24 includes a bore 25 of essentially constant diameter and compressed air introduced into the cavity 23 is directed through a slit 26 to pass through the bore 25 and be discharged throuh an exit 27 of the bore indicated by a dotted line.
  • the passage of the compressed air from the slit 26 to the exit 27 induces a flow of ambient secondary air through the other open end or entrance 28 of the unobstructed bore 25 to cause the same to also pass through the bore 25 to commingle with the compressed air and also be discharged through the exit 27.
  • the movement of the induced ambient air is indicated by arrows.
  • the stream through the bore of the air gun includes not only the pressurized air which passes through the slit 26 but also includes the ambient air that is induced to flow, thereby increasing the mass of air that is capable of being discharged and enhancing the working force of the stream.
  • the stream of air through the exit may be discharged directly or, as shown, be subdivided mostly into a main stream with the remainder being discharged obliquely thereto to form an air shield to minimize flyback of refuse.
  • FIG. 1 there is a reduced diameter tube portion 29 having an open discharge end 30* through which the main stream is discharged.
  • a transverse arcuate slot 31 communicates with the bore just prior to the reduced tube portion 29.
  • the slot 31 may be replaced by a plurality of arcuately disposed holes 32 that also transversely communicate with the bore adjacent the exit 27.
  • the present invention provides for directing the compressed air that flows through the slit 26 away from the nozzle and the operator.
  • closure of the open end 30 still permits air to be discharged through the slot 31. If all the air cannot pass through the slot 31, a slight (on the order of only a few pounds per square inch) pressure build-up occurs in the bore which will cause air to be discharged through the entrance 28 of the nozzle.
  • the operator is protected from this reverse flow by the book 12 having the shape shown and at the back of the gun to be positioned in the path of the air discharging through the entrance 30 to form a shield. Thus any re verse air stream will impinge upon the handle 11 and be dispersed.
  • the nozzle 24 shown in FIG. 1 consists of an exit part 33 that is cylindrical having the cross-sectional shape shown and in which the annular cavity 23 is formed, and an entrance part 34 that is also cylindrical having the cross-sectional shape shown.
  • the entrance part 34 is fitted within an annular groove 35 formed in the adjacent end of the exit part 33 with an annular spacer 36 positoned therebetween in order to form the slit 26.
  • the part 34 may be mechanically or otherwise secured to the part 33 in any convenient manner, one manner being by staking.
  • the slit may be formed into small segments by the use of the spacer shown in FIG. and indicated by the reference numeral 37 which causes the slit 26 to be interrupted into a plurality of segments. It will be understood that the thickness of the spacer 36 (or 37) determines the thickness of the slit 26, an one thickness of the spacers that has been found satisfactory is 0.003 inches. Also, if desired, the size of theslit which sets the maximum quantity of flow of compressed air may be decreased by the use of a spacer shown in FIG. 5 so that the slit size may be controlled by either or both of the thickness of the spacer and/or by segmenting the slit.
  • the slit 26 is formed between a flat surface 33a of the exit part 33 and another flat surface 34a of the entrance part 34.
  • Another surface 33b curves inwardly into the bore and towards the exit 27 to a throat 38 of the bore.
  • the throat has the smallest cross-sectional area of the bore that is closest to the entrance 30 and preferably the bore maintains the same size as the throat to the exit 27 in order to minimize turbulence and dispersion of the stream.
  • the surface 34a terminates at 34b in a diameter that is larger than the throat 38 and just slightly toward the axis of the bore where the flat surface 33a terminates.
  • the outer surface 340 that forms the entrance 28 is made as an extremely flat curve as shown.
  • the present invention is primarily designed for use as an air gun, it has also been found that if a tube, such as a tube 39 in FIG. 7, is connected to a container of material such as water, light oil, or even abrasive material such as sand, that the nozzle will create a vacuum in the tube 39 that will draw the material into the tube, atomize it in the bore 25 and discharge it with the stream from the exit 27 with the material being dispersed and commingled in the stream.
  • the end of the tube 39a should be positioned no further into the tube than the throat 38, and no further withdrawn from the tube than just slightly behind the slit 26. Preferably, as shown, it is located just adjacent the throat 38 but slightly spaced therefrom towards the entrance 28. Also the size of the tube should be substantially less than the throat and diameter of surface 34b in order not to interfere with the induced flow.
  • an air gun which is capable of providing a stream of discharged air which has a relatively large mass since the stream includes not only compressed air but also an induced flow of secondary air. Moreover, closure of the exit of the gun even with the flow of compressed air being maintained into the nozzle does not effect a build-up of pressure at the exit so as to exceed safety regulations limiting the maximum pressure which can exist at a closed exit. Though the air escapes from the nozzle, the user is protected therefrom by both or either a shield located at the entrance of the bore and/or by the ejected stream being directed transversely of the bore by the use of an opening which communicates with the bore.
  • An air gun for forming a stream of air comprising a handle, conduit means carried by the handle and including a connection at one end adapted to be connected to a. source of compressed air, a nozzle sup ported on the handle and formed to have a bore with one end being open to form an entrance and the other end being open to form an exit whereby air may pass uninterrupted through the bore, said bore also being formed with a restricted area throat adjacent the entrance, a slit formed in the nozzle and communicating with the bore between the throat and the entrance, means connecting the other end of the conduit means to the slit, and valve means connected to the conduit means for controlling the passage of compressed air through the conduit means and slit into the bore.
  • the dispersing means includes a shield positioned adjacent the entrance for dispersing the flow of air through the entrance and consisting of a surface on a portion of the handle.
  • dispersing means includes at least one opening communicating transversely with the bore adjacent the exit.
  • the throat has the narrowest cross-sectional area of the bore nearest the entrance
  • the slit is formed between a transverse surface that terminates in a cross-sectional area greater than the throats cross-sectional area, a curved surface that curves crosswise to lengthwise of the bore along the length of the bore from the entrance towards the exit with the curved surface being located nearer the throat than the transverse surface.

Landscapes

  • Nozzles (AREA)
  • Cleaning In General (AREA)
  • Drilling And Boring (AREA)
  • Jet Pumps And Other Pumps (AREA)
US00234535A 1972-03-14 1972-03-14 Air gun Expired - Lifetime US3743186A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23453572A 1972-03-14 1972-03-14

Publications (1)

Publication Number Publication Date
US3743186A true US3743186A (en) 1973-07-03

Family

ID=22881773

Family Applications (1)

Application Number Title Priority Date Filing Date
US00234535A Expired - Lifetime US3743186A (en) 1972-03-14 1972-03-14 Air gun

Country Status (6)

Country Link
US (1) US3743186A (is)
JP (1) JPS4912658A (is)
CA (1) CA974561A (is)
DE (1) DE2312311A1 (is)
FR (1) FR2176419A5 (is)
GB (1) GB1428191A (is)

Cited By (89)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880355A (en) * 1974-04-08 1975-04-29 Graco Inc Air blow gun
US4195780A (en) * 1977-12-01 1980-04-01 Vortec Corporation Flow amplifying nozzle
US4385728A (en) * 1981-01-30 1983-05-31 Vortec Corporation Flow-amplifying nozzle
US5407135A (en) * 1993-11-16 1995-04-18 Imperial Chemical Industries Plc Hand-held air blower device
US5464155A (en) * 1994-01-13 1995-11-07 Schutter; Raymond A. Safety air gun
US5620492A (en) * 1993-08-05 1997-04-15 Land; Michael B. Apparatus for quenching glass
US6129294A (en) * 1998-11-09 2000-10-10 Hsin-Fa; Wang Water nozzle control valve seat
US20070164130A1 (en) * 2005-10-13 2007-07-19 Cool Clean Technologies, Inc. Nozzle device and method for forming cryogenic composite fluid spray
US7427039B1 (en) * 2007-03-23 2008-09-23 Wuu-Cheau Jou Siphon drying gun
US20080290193A1 (en) * 2007-05-21 2008-11-27 Hursen Thomas F Air gun safety nozzle
US20090060711A1 (en) * 2007-09-04 2009-03-05 Dyson Technology Limited Fan
US20090145665A1 (en) * 2007-12-10 2009-06-11 Hursen Thomas F Method and apparatus for selective soil fracturing, soil excavation or soil treatment using supersonic pneumatic nozzle with integral fluidized material injector
US20100150699A1 (en) * 2008-12-11 2010-06-17 Dyson Technology Limited Fan
US20100226797A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US20100225012A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Humidifying apparatus
US20100226787A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US20100226751A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US20100226764A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan
US20100226754A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US20100226801A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US20100226753A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US20100226752A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US20100226749A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US20110110805A1 (en) * 2009-11-06 2011-05-12 Dyson Technology Limited Fan
US20110164959A1 (en) * 2008-09-23 2011-07-07 Dyson Technology Limited Fan
US20110223014A1 (en) * 2009-03-04 2011-09-15 Dyson Technology Limited Fan assembly
US8348597B2 (en) 2009-03-04 2013-01-08 Dyson Technology Limited Fan assembly
US8366403B2 (en) 2010-08-06 2013-02-05 Dyson Technology Limited Fan assembly
US8430624B2 (en) 2009-03-04 2013-04-30 Dyson Technology Limited Fan assembly
US8613601B2 (en) 2009-03-04 2013-12-24 Dyson Technology Limited Fan assembly
US8734094B2 (en) 2010-08-06 2014-05-27 Dyson Technology Limited Fan assembly
US8770946B2 (en) 2010-03-23 2014-07-08 Dyson Technology Limited Accessory for a fan
US8873940B2 (en) 2010-08-06 2014-10-28 Dyson Technology Limited Fan assembly
US8882451B2 (en) 2010-03-23 2014-11-11 Dyson Technology Limited Fan
US8894354B2 (en) 2010-09-07 2014-11-25 Dyson Technology Limited Fan
US8967979B2 (en) 2010-10-18 2015-03-03 Dyson Technology Limited Fan assembly
US8967980B2 (en) 2010-10-18 2015-03-03 Dyson Technology Limited Fan assembly
US9011116B2 (en) 2010-05-27 2015-04-21 Dyson Technology Limited Device for blowing air by means of a nozzle assembly
USD728092S1 (en) 2013-08-01 2015-04-28 Dyson Technology Limited Fan
USD728769S1 (en) 2013-08-01 2015-05-05 Dyson Technology Limited Fan
USD728770S1 (en) 2013-08-01 2015-05-05 Dyson Technology Limited Fan
USD729372S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729374S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729376S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729375S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729373S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729925S1 (en) 2013-03-07 2015-05-19 Dyson Technology Limited Fan
US9127855B2 (en) 2011-07-27 2015-09-08 Dyson Technology Limited Fan assembly
US9127689B2 (en) 2009-03-04 2015-09-08 Dyson Technology Limited Fan assembly
US9148978B2 (en) 2012-04-19 2015-09-29 Xerox Corporation Cooling flow accelerator
US9151299B2 (en) 2012-02-06 2015-10-06 Dyson Technology Limited Fan
USD746425S1 (en) 2013-01-18 2015-12-29 Dyson Technology Limited Humidifier
USD746966S1 (en) 2013-01-18 2016-01-05 Dyson Technology Limited Humidifier
USD747450S1 (en) 2013-01-18 2016-01-12 Dyson Technology Limited Humidifier
US9249809B2 (en) 2012-02-06 2016-02-02 Dyson Technology Limited Fan
USD749231S1 (en) 2013-01-18 2016-02-09 Dyson Technology Limited Humidifier
US9283573B2 (en) 2012-02-06 2016-03-15 Dyson Technology Limited Fan assembly
US9328739B2 (en) 2012-01-19 2016-05-03 Dyson Technology Limited Fan
US9366449B2 (en) 2012-03-06 2016-06-14 Dyson Technology Limited Humidifying apparatus
US9410711B2 (en) 2013-09-26 2016-08-09 Dyson Technology Limited Fan assembly
US9458853B2 (en) 2011-07-27 2016-10-04 Dyson Technology Limited Fan assembly
US9568006B2 (en) 2012-05-16 2017-02-14 Dyson Technology Limited Fan
US9568021B2 (en) 2012-05-16 2017-02-14 Dyson Technology Limited Fan
US9599356B2 (en) 2014-07-29 2017-03-21 Dyson Technology Limited Humidifying apparatus
US9726456B1 (en) * 2016-04-18 2017-08-08 Li-Tang Jhu Blow gun
US9732763B2 (en) 2012-07-11 2017-08-15 Dyson Technology Limited Fan assembly
US9745996B2 (en) 2010-12-02 2017-08-29 Dyson Technology Limited Fan
US9745981B2 (en) 2011-11-11 2017-08-29 Dyson Technology Limited Fan assembly
US9752789B2 (en) 2012-03-06 2017-09-05 Dyson Technology Limited Humidifying apparatus
US9797613B2 (en) 2012-03-06 2017-10-24 Dyson Technology Limited Humidifying apparatus
US9797414B2 (en) 2013-07-09 2017-10-24 Dyson Technology Limited Fan assembly
US9797612B2 (en) 2013-01-29 2017-10-24 Dyson Technology Limited Fan assembly
US9816531B2 (en) 2008-10-25 2017-11-14 Dyson Technology Limited Fan utilizing coanda surface
US9822778B2 (en) 2012-04-19 2017-11-21 Dyson Technology Limited Fan assembly
US9855573B2 (en) 2015-01-16 2018-01-02 Thomas Francis Hursen Supersonic air knife handle
US9903602B2 (en) 2014-07-29 2018-02-27 Dyson Technology Limited Humidifying apparatus
US9927136B2 (en) 2012-03-06 2018-03-27 Dyson Technology Limited Fan assembly
US9926804B2 (en) 2010-11-02 2018-03-27 Dyson Technology Limited Fan assembly
US9982677B2 (en) 2014-07-29 2018-05-29 Dyson Technology Limited Fan assembly
US10094392B2 (en) 2011-11-24 2018-10-09 Dyson Technology Limited Fan assembly
US10100836B2 (en) 2010-10-13 2018-10-16 Dyson Technology Limited Fan assembly
US10145583B2 (en) 2012-04-04 2018-12-04 Dyson Technology Limited Heating apparatus
US10350656B2 (en) * 2016-11-11 2019-07-16 Milwaukee Electric Tool Corporation Drain clearing air gun
US10408478B2 (en) 2012-03-06 2019-09-10 Dyson Technology Limited Humidifying apparatus
US10428837B2 (en) 2012-05-16 2019-10-01 Dyson Technology Limited Fan
US10449557B2 (en) 2016-07-15 2019-10-22 Thomas Francis Hursen Supersonic air knife with a supersonic variable flow nozzle
US10465928B2 (en) 2012-03-06 2019-11-05 Dyson Technology Limited Humidifying apparatus
US10612565B2 (en) 2013-01-29 2020-04-07 Dyson Technology Limited Fan assembly
US10661287B2 (en) 2017-04-04 2020-05-26 David P. Jackson Passive electrostatic CO2 composite spray applicator

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5939478Y2 (ja) * 1976-01-26 1984-11-05 日本デビルビス株式会社 エアノズル
JPS587132A (ja) * 1981-06-27 1983-01-14 タマリ・ウラジミ−ル・フェ−ク 双眼装置
GB8516264D0 (en) * 1985-06-27 1985-07-31 Coleman J D Compressed air powered suction unit
GB2200063B (en) * 1987-01-30 1990-10-24 Ural Nii Trubnoi Promy Straightener guide
DE4238055C2 (de) * 1992-11-11 1995-06-29 Stoeckert Instr Gmbh Reinigungspistole zum handgesteuerten Durchlaß von Fluiden
WO2014024817A1 (ja) * 2012-08-07 2014-02-13 アクロス商事株式会社 バグフィルター用空気増幅装置および該バグフィルター用空気増幅装置を用いたバグフィルター用空気増幅システム

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965312A (en) * 1955-07-12 1960-12-20 Hale Loren Spray gun
US3129892A (en) * 1961-06-26 1964-04-21 John E Tillman Pressure reducing blow gun
US3263934A (en) * 1965-06-02 1966-08-02 Jenkins Brothers Safety tip for pneumatic gun
US3419082A (en) * 1967-03-16 1968-12-31 Bliss E W Co Portable foam nozzle
US3599876A (en) * 1969-06-17 1971-08-17 Henry E Kyburg Safety air gun
CA885892A (en) * 1971-11-16 O. Druge Daniel Controlled flow safety nozzle
US3647142A (en) * 1970-10-22 1972-03-07 Scovill Manufacturing Co Air gun having a safety nozzle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA885892A (en) * 1971-11-16 O. Druge Daniel Controlled flow safety nozzle
US2965312A (en) * 1955-07-12 1960-12-20 Hale Loren Spray gun
US3129892A (en) * 1961-06-26 1964-04-21 John E Tillman Pressure reducing blow gun
US3263934A (en) * 1965-06-02 1966-08-02 Jenkins Brothers Safety tip for pneumatic gun
US3419082A (en) * 1967-03-16 1968-12-31 Bliss E W Co Portable foam nozzle
US3599876A (en) * 1969-06-17 1971-08-17 Henry E Kyburg Safety air gun
US3647142A (en) * 1970-10-22 1972-03-07 Scovill Manufacturing Co Air gun having a safety nozzle

Cited By (135)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880355A (en) * 1974-04-08 1975-04-29 Graco Inc Air blow gun
US4195780A (en) * 1977-12-01 1980-04-01 Vortec Corporation Flow amplifying nozzle
US4385728A (en) * 1981-01-30 1983-05-31 Vortec Corporation Flow-amplifying nozzle
US5620492A (en) * 1993-08-05 1997-04-15 Land; Michael B. Apparatus for quenching glass
US5407135A (en) * 1993-11-16 1995-04-18 Imperial Chemical Industries Plc Hand-held air blower device
US5464155A (en) * 1994-01-13 1995-11-07 Schutter; Raymond A. Safety air gun
US6129294A (en) * 1998-11-09 2000-10-10 Hsin-Fa; Wang Water nozzle control valve seat
US20070164130A1 (en) * 2005-10-13 2007-07-19 Cool Clean Technologies, Inc. Nozzle device and method for forming cryogenic composite fluid spray
US7389941B2 (en) 2005-10-13 2008-06-24 Cool Clean Technologies, Inc. Nozzle device and method for forming cryogenic composite fluid spray
US7427039B1 (en) * 2007-03-23 2008-09-23 Wuu-Cheau Jou Siphon drying gun
US20080230626A1 (en) * 2007-03-23 2008-09-25 Wuu-Cheau Jou Siphon drying gun
US20080290193A1 (en) * 2007-05-21 2008-11-27 Hursen Thomas F Air gun safety nozzle
US8162239B2 (en) 2007-05-21 2012-04-24 Thomas Francis Hursen Air gun safety nozzle
US8308445B2 (en) 2007-09-04 2012-11-13 Dyson Technology Limited Fan
US8764412B2 (en) 2007-09-04 2014-07-01 Dyson Technology Limited Fan
US9249810B2 (en) 2007-09-04 2016-02-02 Dyson Technology Limited Fan
US20090060711A1 (en) * 2007-09-04 2009-03-05 Dyson Technology Limited Fan
US8403650B2 (en) 2007-09-04 2013-03-26 Dyson Technology Limited Fan
US20110223015A1 (en) * 2007-09-04 2011-09-15 Dyson Technology Limited Fan
US8171659B2 (en) 2007-12-10 2012-05-08 Thomas Francis Hursen Method and apparatus for selective soil fracturing, soil excavation or soil treatment using supersonic pneumatic nozzle with integral fluidized material injector
US20090145665A1 (en) * 2007-12-10 2009-06-11 Hursen Thomas F Method and apparatus for selective soil fracturing, soil excavation or soil treatment using supersonic pneumatic nozzle with integral fluidized material injector
US8348629B2 (en) 2008-09-23 2013-01-08 Dyston Technology Limited Fan
US20110164959A1 (en) * 2008-09-23 2011-07-07 Dyson Technology Limited Fan
US10145388B2 (en) 2008-10-25 2018-12-04 Dyson Technology Limited Fan with a filter
US9816531B2 (en) 2008-10-25 2017-11-14 Dyson Technology Limited Fan utilizing coanda surface
US20100150699A1 (en) * 2008-12-11 2010-06-17 Dyson Technology Limited Fan
US8092166B2 (en) 2008-12-11 2012-01-10 Dyson Technology Limited Fan
US8348596B2 (en) 2009-03-04 2013-01-08 Dyson Technology Limited Fan assembly
US8708650B2 (en) 2009-03-04 2014-04-29 Dyson Technology Limited Fan assembly
US20100226797A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US20100226749A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US20100226752A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US8197226B2 (en) 2009-03-04 2012-06-12 Dyson Technology Limited Fan assembly
US8246317B2 (en) 2009-03-04 2012-08-21 Dyson Technology Limited Fan assembly
US8308432B2 (en) 2009-03-04 2012-11-13 Dyson Technology Limited Fan assembly
US20100226753A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US8348597B2 (en) 2009-03-04 2013-01-08 Dyson Technology Limited Fan assembly
US20100226801A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US9127689B2 (en) 2009-03-04 2015-09-08 Dyson Technology Limited Fan assembly
US8356804B2 (en) 2009-03-04 2013-01-22 Dyson Technology Limited Humidifying apparatus
US9513028B2 (en) 2009-03-04 2016-12-06 Dyson Technology Limited Fan assembly
US20100226754A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US8403640B2 (en) 2009-03-04 2013-03-26 Dyson Technology Limited Fan assembly
US8408869B2 (en) 2009-03-04 2013-04-02 Dyson Technology Limited Fan assembly
US8430624B2 (en) 2009-03-04 2013-04-30 Dyson Technology Limited Fan assembly
US9599368B2 (en) 2009-03-04 2017-03-21 Dyson Technology Limited Nozzle for bladeless fan assembly with heater
US8469658B2 (en) 2009-03-04 2013-06-25 Dyson Technology Limited Fan
US8469655B2 (en) 2009-03-04 2013-06-25 Dyson Technology Limited Fan assembly
US8469660B2 (en) 2009-03-04 2013-06-25 Dyson Technology Limited Fan assembly
US8529203B2 (en) 2009-03-04 2013-09-10 Dyson Technology Limited Fan assembly
US8613601B2 (en) 2009-03-04 2013-12-24 Dyson Technology Limited Fan assembly
US8684687B2 (en) 2009-03-04 2014-04-01 Dyson Technology Limited Fan assembly
US20110223014A1 (en) * 2009-03-04 2011-09-15 Dyson Technology Limited Fan assembly
US8714937B2 (en) 2009-03-04 2014-05-06 Dyson Technology Limited Fan assembly
US8721286B2 (en) 2009-03-04 2014-05-13 Dyson Technology Limited Fan assembly
US20100225012A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Humidifying apparatus
US20100226764A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan
US10006657B2 (en) 2009-03-04 2018-06-26 Dyson Technology Limited Fan assembly
US8784071B2 (en) 2009-03-04 2014-07-22 Dyson Technology Limited Fan assembly
US8783663B2 (en) 2009-03-04 2014-07-22 Dyson Technology Limited Humidifying apparatus
US8784049B2 (en) 2009-03-04 2014-07-22 Dyson Technology Limited Fan
US20100226787A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US10221860B2 (en) 2009-03-04 2019-03-05 Dyson Technology Limited Fan assembly
US20100226751A1 (en) * 2009-03-04 2010-09-09 Dyson Technology Limited Fan assembly
US8932028B2 (en) 2009-03-04 2015-01-13 Dyson Technology Limited Fan assembly
US8454322B2 (en) 2009-11-06 2013-06-04 Dyson Technology Limited Fan having a magnetically attached remote control
US9004878B2 (en) 2009-11-06 2015-04-14 Dyson Technology Limited Fan having a magnetically attached remote control
US20110110805A1 (en) * 2009-11-06 2011-05-12 Dyson Technology Limited Fan
US8882451B2 (en) 2010-03-23 2014-11-11 Dyson Technology Limited Fan
US8770946B2 (en) 2010-03-23 2014-07-08 Dyson Technology Limited Accessory for a fan
US9011116B2 (en) 2010-05-27 2015-04-21 Dyson Technology Limited Device for blowing air by means of a nozzle assembly
US10344773B2 (en) 2010-08-06 2019-07-09 Dyson Technology Limited Fan assembly
US8873940B2 (en) 2010-08-06 2014-10-28 Dyson Technology Limited Fan assembly
US8734094B2 (en) 2010-08-06 2014-05-27 Dyson Technology Limited Fan assembly
US8366403B2 (en) 2010-08-06 2013-02-05 Dyson Technology Limited Fan assembly
US9745988B2 (en) 2010-09-07 2017-08-29 Dyson Technology Limited Fan
US8894354B2 (en) 2010-09-07 2014-11-25 Dyson Technology Limited Fan
US10100836B2 (en) 2010-10-13 2018-10-16 Dyson Technology Limited Fan assembly
US8967979B2 (en) 2010-10-18 2015-03-03 Dyson Technology Limited Fan assembly
US8967980B2 (en) 2010-10-18 2015-03-03 Dyson Technology Limited Fan assembly
US9926804B2 (en) 2010-11-02 2018-03-27 Dyson Technology Limited Fan assembly
US9745996B2 (en) 2010-12-02 2017-08-29 Dyson Technology Limited Fan
US9458853B2 (en) 2011-07-27 2016-10-04 Dyson Technology Limited Fan assembly
US10094581B2 (en) 2011-07-27 2018-10-09 Dyson Technology Limited Fan assembly
US9127855B2 (en) 2011-07-27 2015-09-08 Dyson Technology Limited Fan assembly
US9291361B2 (en) 2011-07-27 2016-03-22 Dyson Technology Limited Fan assembly
US9335064B2 (en) 2011-07-27 2016-05-10 Dyson Technology Limited Fan assembly
US9745981B2 (en) 2011-11-11 2017-08-29 Dyson Technology Limited Fan assembly
US10094392B2 (en) 2011-11-24 2018-10-09 Dyson Technology Limited Fan assembly
US9328739B2 (en) 2012-01-19 2016-05-03 Dyson Technology Limited Fan
US9151299B2 (en) 2012-02-06 2015-10-06 Dyson Technology Limited Fan
US9249809B2 (en) 2012-02-06 2016-02-02 Dyson Technology Limited Fan
US9283573B2 (en) 2012-02-06 2016-03-15 Dyson Technology Limited Fan assembly
US10563875B2 (en) 2012-03-06 2020-02-18 Dyson Technology Limited Humidifying apparatus
US10465928B2 (en) 2012-03-06 2019-11-05 Dyson Technology Limited Humidifying apparatus
US9927136B2 (en) 2012-03-06 2018-03-27 Dyson Technology Limited Fan assembly
US9366449B2 (en) 2012-03-06 2016-06-14 Dyson Technology Limited Humidifying apparatus
US9797613B2 (en) 2012-03-06 2017-10-24 Dyson Technology Limited Humidifying apparatus
US10408478B2 (en) 2012-03-06 2019-09-10 Dyson Technology Limited Humidifying apparatus
US9752789B2 (en) 2012-03-06 2017-09-05 Dyson Technology Limited Humidifying apparatus
US10145583B2 (en) 2012-04-04 2018-12-04 Dyson Technology Limited Heating apparatus
US9822778B2 (en) 2012-04-19 2017-11-21 Dyson Technology Limited Fan assembly
US9148978B2 (en) 2012-04-19 2015-09-29 Xerox Corporation Cooling flow accelerator
US10428837B2 (en) 2012-05-16 2019-10-01 Dyson Technology Limited Fan
US10309420B2 (en) 2012-05-16 2019-06-04 Dyson Technology Limited Fan
US9568021B2 (en) 2012-05-16 2017-02-14 Dyson Technology Limited Fan
US9568006B2 (en) 2012-05-16 2017-02-14 Dyson Technology Limited Fan
US9732763B2 (en) 2012-07-11 2017-08-15 Dyson Technology Limited Fan assembly
USD749231S1 (en) 2013-01-18 2016-02-09 Dyson Technology Limited Humidifier
USD747450S1 (en) 2013-01-18 2016-01-12 Dyson Technology Limited Humidifier
USD746966S1 (en) 2013-01-18 2016-01-05 Dyson Technology Limited Humidifier
USD746425S1 (en) 2013-01-18 2015-12-29 Dyson Technology Limited Humidifier
US9797612B2 (en) 2013-01-29 2017-10-24 Dyson Technology Limited Fan assembly
US10612565B2 (en) 2013-01-29 2020-04-07 Dyson Technology Limited Fan assembly
USD729374S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729376S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729372S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729925S1 (en) 2013-03-07 2015-05-19 Dyson Technology Limited Fan
USD729373S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
USD729375S1 (en) 2013-03-07 2015-05-12 Dyson Technology Limited Fan
US9797414B2 (en) 2013-07-09 2017-10-24 Dyson Technology Limited Fan assembly
USD728769S1 (en) 2013-08-01 2015-05-05 Dyson Technology Limited Fan
USD728770S1 (en) 2013-08-01 2015-05-05 Dyson Technology Limited Fan
USD728092S1 (en) 2013-08-01 2015-04-28 Dyson Technology Limited Fan
US9410711B2 (en) 2013-09-26 2016-08-09 Dyson Technology Limited Fan assembly
US9982677B2 (en) 2014-07-29 2018-05-29 Dyson Technology Limited Fan assembly
US9903602B2 (en) 2014-07-29 2018-02-27 Dyson Technology Limited Humidifying apparatus
US9599356B2 (en) 2014-07-29 2017-03-21 Dyson Technology Limited Humidifying apparatus
US9855573B2 (en) 2015-01-16 2018-01-02 Thomas Francis Hursen Supersonic air knife handle
US10603780B2 (en) 2015-01-16 2020-03-31 Thomas Francis Hursen Adjustable handle assembly
US9726456B1 (en) * 2016-04-18 2017-08-08 Li-Tang Jhu Blow gun
US10449557B2 (en) 2016-07-15 2019-10-22 Thomas Francis Hursen Supersonic air knife with a supersonic variable flow nozzle
US10350656B2 (en) * 2016-11-11 2019-07-16 Milwaukee Electric Tool Corporation Drain clearing air gun
US11235360B2 (en) 2016-11-11 2022-02-01 Milwaukee Electric Tool Corporation Drain clearing air gun
US10661287B2 (en) 2017-04-04 2020-05-26 David P. Jackson Passive electrostatic CO2 composite spray applicator

Also Published As

Publication number Publication date
GB1428191A (en) 1976-03-17
JPS4912658A (is) 1974-02-04
FR2176419A5 (is) 1973-10-26
CA974561A (en) 1975-09-16
DE2312311A1 (de) 1973-09-27

Similar Documents

Publication Publication Date Title
US3743186A (en) Air gun
EP0075018B1 (en) Atomizing or dispersion nozzle
US2246211A (en) Method of and means for mixing and atomizing liquids
US7234649B2 (en) Spray gun
CA1289597C (en) Manually actuated liquid sprayer
US5348228A (en) Water sprayer with flow rate control
US4508272A (en) Hose end spray nozzle
US5590719A (en) Firefighting nozzle with foam injection system
US2985384A (en) Hose nozzle and the like
US4232824A (en) Method and apparatus for the pneumatic spraying of liquid products
US2410532A (en) Appliance for paint sprayers
US4531675A (en) Spray nozzle
JPS5939270B2 (ja) 微粒状物質および流体のジエツトを発生させる銃
US4948053A (en) Paint spray nozzle
US4060874A (en) Apparatus for removing dust having device for producing air curtain
US3814329A (en) Pressure reducing nozzles for pressure guns
US3790085A (en) Safety nozzle for air blow-guns
US4243178A (en) Air gun with safety nozzle
US4041583A (en) Yarn texturing jet
US3774847A (en) Aspirator nozzle for blow guns or the like
US5769327A (en) Nozzle for spreading water fog
US4026474A (en) Venturi nozzle for air guns
US2851213A (en) Compressed-air operated vacuum cleaners
US4107828A (en) Yarn treating jet
US6505784B1 (en) Air blowgun