US3852918A - Gas-abrasive mixing and feeding device - Google Patents

Gas-abrasive mixing and feeding device Download PDF

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Publication number
US3852918A
US3852918A US00239211A US23921172A US3852918A US 3852918 A US3852918 A US 3852918A US 00239211 A US00239211 A US 00239211A US 23921172 A US23921172 A US 23921172A US 3852918 A US3852918 A US 3852918A
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United States
Prior art keywords
venturi tube
abrasive
reservoir
throat
compressed gas
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Expired - Lifetime
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US00239211A
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English (en)
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R Black
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Individual
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Individual
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Priority to US00239211A priority Critical patent/US3852918A/en
Priority to GB1329273A priority patent/GB1420386A/en
Priority to DE19732314294 priority patent/DE2314294A1/de
Priority to FR7311112A priority patent/FR2178671A5/fr
Priority to JP3514873A priority patent/JPS5545348B2/ja
Application granted granted Critical
Publication of US3852918A publication Critical patent/US3852918A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
    • B24C7/0053—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier

Definitions

  • the quantity of abrasive particles carried by the gaseous medium be uniform and be capable of accurate regulation. It is therefor an important objective of the present invention to provide for uniformity of feed of the abrasive particles and also for accurate control thereof.
  • Another objective of the invention is to eliminate the spurting and erratic flow of abrasive into the gaseous carrier medium which has been characteristic of various prior systems, particularly where the prior system depends upon a single, low velocity tube for feeding the abrasive into the gaseous carrier medium.
  • FIGURE is a somewhat diagrammatic view of equipment conforming with the present invention, certain parts being shown in section for convenience of illustration.
  • a receptacle indicated at l constitutes a reservoir for abrasive particles, the receptacle having a generally conical bottom end having a top wall indicated at 2 with a removable closure 3 threaded on the spout 4, with interposition of a sealing gasket 5.
  • the receptacle 1 may be cylindrical and from about 2 to 6 inches in diameter, and the body or charge of abrasive particles introduced will initially fill the receptacle to a level such as indicated at 6.
  • a compressed air supply line is indicated in the drawing at 7, this line having a shut-off valve 8 therein which, as will further appear, is normally in the open position during intervals when the equipment is to be employed.
  • the compressed air supply line is provided with 2 branches indicated at 9 and 10, the branch 9 being extended for connection with a pressure chamber 11 in the form of a cup connected with a lower end of the receptacle 1 at the apex of the conical bottom wall.
  • a venturi tube 12 is positioned within the receptacle 1 and has its lower or inlet end downwardly open for connection with the pressure chamber 11.
  • a nozzle 13 formed centrally of disc 14 is positioned so as to deliver a stream of compressed air into the throat of the venturi tube 12.
  • the nozzle 13 and disc 14 are desirably formed of rubber and the nozzle is preferably automatically collapsable so as to close across the passage from the pressure chamber 11 into the venturi tube at times when the abrasive stream is shut off. This closure of the nozzle 13 prevents undesired downward flow of abrasive particles from the venturi tube into the chamber 11.
  • the inlet end of the venturi tube is provided with a series of apertures or ports 15 connecting with the surrounding space within the receptacle 1 and thus communicating with the mass or reservoir of the abrasive particles within the receptacle 1.
  • venturi tube 12 At its upper or discharge end, the venturi tube 12 is provided with a series of apertures or ports 16 also communicating with the interior of the receptacle 1, for a purpose to be explained more fully hereinafter.
  • An abrasive delivery connection 17 is connected with the upper end of the venturi tube 12 and is extended exteriorly of the receptacle 1.
  • the connection 17 is adapted to communicate with the flexible tube 18 through the controllable shut-off valve 19.
  • the free end of the tube 18 is provided with a discharge or jet nozzle 20 formed, for example, of tungsten carbide for wear resistance.
  • the branch 10 of the compressed gas supply line is extended for connection with the upper end of the venturi tube 16 adjacent to the point of connection of the delivery line 17.
  • This branch 10 is provided with a controllable or variable choke valve 21.
  • Each of branch lines 9 and 10 is provided with an automatic check valve 22 oriented to prevent flow from the abrasive reservoir back toward the compressed air supply line.
  • the compressed air supply line 7 delivers air under pressure through the branches 9 and 10 when the valve 8 has been open and this establishes a pressurized condition throughout the system.
  • the controllable valve 19 is opened, for instance by means of a foot operated or other remote control device of known kind, an abrasive laden air stream flows from the delivery line 17 through the valve and through the flexible connection 18 to be discharged in the form of a jet from the nozzle 20.
  • the adjustable choke valve 21 serves to deliver more or less abrasive free air from the branch 10 to the delivery connection 17. If this valve 21 is placed in the full open position, the quantity of abrasive particles carried by the air stream will be at a minimum. Complete closure of the adjustable choke valve 21 will shut off the direct flow of air from branch to the delivery connection 17 and all of the air reaching the delivery connection 17 will then flow through the branch 9 and through the venturi tube 12. This will deliver the maximum quantity of abrasive with the air.
  • the system of the invention including the recirculation of abrasive and air within the reservoir, together with the action of the choke valve 21 also provides a wide range of accurate adjustment of the quantity of abrasive delivered with the air stream.
  • the use of the flexible and collapsable nozzle 13 for delivering the air jet into the throat of the venturi tube 12 is highly effective in preventing undesired falling of abrasive particles downwardly into the pressure chamber 11.
  • the nozzle 13 instantly collapses and thus closes the passage between the inlet end of the venturi tube and the pressure chamber 11. This is important in order to avoid an initial spurt of an excess of abrasive particles at the time when the valve 19 is opened.
  • check valves 22 are included in the two gas supply branches 9 and 10. In this way under special conditions, such as moving the equipment, abnormal pressure fluctuations, and the like, abrasive particles will not be permitted to travel upstream in the branch connections 9 and 10.
  • valve 19 is located in the delivery line at the output side of the reservoir and this is an important feature, because the opening of the valve 19 results in delivery of the desired abrasive jet without any appreciable time delay such as would be involved if the control valve 19 were eliminated and the valve on the input side such as valve 8 was used each time it is desired to deliver the abrasive jet.
  • the system of the invention especially the recirculation of the air and abrasive is of great importance in providing uniformity of admixture of abrasive particles with the air stream without the necessity for employing any vibrators or mechanical agitators. This is advantageous because of the simplification of the equipment, in addition to the advantages accruing from the greater uniformity of the admixture secured.
  • the system of the present invention is useable with various abrasive particles, but for many purposes aluminum oxide particles are preferred, advantageously in particular sizes running from about 10 microns to about 30 microns.
  • the air or other gas pressure employed may also vary over a broad range, for instance from about 20 p.s.i. to about 150 p.s.i., but for most purposes will run from about 40 p.s.i. to about p.s.i.
  • the passage in the nozzle 20 is desirably much smaller than any of the other passages in the system and should be only a small fraction of the total cross sectional area of the ports 15 in the inlet end of the venturi tube or of the ports 16 in the outlet end of the venturi tube.
  • the nozzle passage will, of course, depend somewhat on the particular purpose for which the equipment is being used. For various of the purposes above referred to, nozzles having a bore in the range from about 0.0l8 to about 0.025 inch is suitable.
  • the ports 15 in the inlet end of the venturi desirably comprise about six evenly spaced holes, each of about 0.065 inch diameter, while at the same time using about twelve equally spaced holes of about 0.055 inch diameter, as ports 16 in the upper or delivery end of the venturi.
  • a resin material of this type when applied to a bone dry, etched surface of the kind produced by the system of the present invention may readily be cured or polermerized in situ as by exposure to ultra-violent light thereby providing an adherent coating without any appreciable elevation in temperature.
  • Still another use for which the equipment of the invention is especially adapted is dental prophylaxis.
  • a relatively soft abrasive for instance micron calcium carbonate.
  • the calcium carbonate should be of crystalline form and may be derived, for example, from Iceland Spar or from fresh water clam shells, high grade silicate free white marble.
  • a nozzle bore of 0.018 inch is suitable, and an air supply pressure of about p.s.i.
  • the use of the equipment and method for dental prophylaxis is highly effective and will leave the tooth enamel well polished.
  • Equipment for use in mixing abrasive particles with a compressed gas comprising a reservoir for abrasive particles, a venturi tube in the reservoir, the tube having its inlet end portion apertured to provide communication with the interior of the reservoir, an abrasive delivery connection extended from the discharge end of the venturi tube, the discharge end portion of the venturi tube being apertured to provide communication with the interior of the reservoir, and means for causing abrasive particles to circulate through the venturi tube and the reservoir and to deliver abrasive particles through said delivery connection comprising a compressed gas supply line and a nozzle for delivering a stream of compressed gas from said line into the throat of the venturi tube through the inlet end of the tube.
  • Equipment as defined in claim 1 and further including a conduit interconnecting the compressed gas supply line and the abrasive delivery connection.
  • Equipment as defined in claim 1 and further including a controllable shut-off valve in said delivery connection.
  • Equipment for use in mixing abrasive particles with a compressed gas comprising a reservoir for abrasive particles, a venturi tube in the reservoir, the tube having its inlet end positioned in a lower region of the reservoir and having apertures in communication with the interior of the reservoir, the tube having its discharge end positioned in an upper region of the reservoir and having apertures in communication with the interior of the reservoir, an abrasive delivery connection connected with the discharge end of the venturi tube downstream of the apertures in the discharge end, a compressed gas supply line having one branch connected with the inlet end of the venturi tube arid a second branch connected with said abrasive delivery connection, a nozzle directed into the inlet end of the venturi tube for delivering a stream of compressed gas from said one branch into the throat of the venturi tube, and a controllable shut-off valve in said abrasive delivery connection.
  • Equipment for use in mixing abrasive particles with a compressed gas comprising a reservoir for abrasive particles, a venturi tube having a throat and inlet and outlet ends extending in opposite directions from the throat and progressively increasing in cross section as compared with the throat, the inlet end of the venturi tube being presented downwardly adjacent the bottom of the reservoir and having abrasive inlet portage below the venturi throat, the oulet end of the venturi tube being presented upwardly in the reservoir and having abrasive outlet portage through the wall of the outlet end above the venturi throat, a valved delivery line connected with the venturi tube above the outlet portage, a compressed gas supply line connected with the inlet end of the venturi tube, and a nozzle in the connection of the gas supply line with the inlet end of the venturi tube, the nozzle being extended into the inlet end of the venturi tube and serving to deliver a compressed gas jet through the throat of the venturi tube, the abrasive inlet portage providing for inlet of the abras
  • Equipment for use in mixing abrasive particles with a compressed gas comprising a reservoir for abrasive particles, a venturi tube having a throat and inlet and outlet ends extending in opposite directions from the throat and progressively increasing in cross section as compared with the throat, the inlet end of the venturi tube being presented downwardly adjacent the bottom of the reservoir and having abrasive inlet portage below the venturi throat, the outlet end of the venturi tube being presented upwardly in the reservoir and having abrasive outlet portage through the wall of the outlet end above the venturi throat, a valved delivery line connected with the venturi tube above the outlet portage, a compressed gas supply line connected with the inlet end of the venturi tube, and a nozzle in the connection of the gas supply line with the inlet end of the venturi tube, the nozzle being positioned to direct a stream of compressed gas into the throat of the venturi tube.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
US00239211A 1972-03-29 1972-03-29 Gas-abrasive mixing and feeding device Expired - Lifetime US3852918A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US00239211A US3852918A (en) 1972-03-29 1972-03-29 Gas-abrasive mixing and feeding device
GB1329273A GB1420386A (en) 1972-03-29 1973-03-20 Equipment for mixing abrasive particles into a gas stream
DE19732314294 DE2314294A1 (de) 1972-03-29 1973-03-22 Verfahren und vorrichtung zur abgabe eines mit schleifmittel beladenen druckgasstromes
FR7311112A FR2178671A5 (fr) 1972-03-29 1973-03-28
JP3514873A JPS5545348B2 (fr) 1972-03-29 1973-03-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00239211A US3852918A (en) 1972-03-29 1972-03-29 Gas-abrasive mixing and feeding device

Publications (1)

Publication Number Publication Date
US3852918A true US3852918A (en) 1974-12-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00239211A Expired - Lifetime US3852918A (en) 1972-03-29 1972-03-29 Gas-abrasive mixing and feeding device

Country Status (5)

Country Link
US (1) US3852918A (fr)
JP (1) JPS5545348B2 (fr)
DE (1) DE2314294A1 (fr)
FR (1) FR2178671A5 (fr)
GB (1) GB1420386A (fr)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026072A (en) * 1976-08-09 1977-05-31 Dremann George H Self-cleaning muffler for an abrasive blast system
DE2930836A1 (de) * 1978-07-28 1980-02-14 Gallant Ben Joseph Schleifverfahren und -geraet
EP0025156A1 (fr) * 1979-08-22 1981-03-18 Myers-Europe Pumpen GmbH Procédé et installation pour traiter des surfaces avec un jet abrasif humide
EP0119735A1 (fr) * 1983-02-18 1984-09-26 Dentsply Research and Development Corporation Appareil et procédé pour le nettoyage des dents
US5158455A (en) * 1990-02-09 1992-10-27 Young Dental Manufacturing Company Control unit for a scaler and a polisher
US5525058A (en) * 1992-03-27 1996-06-11 American Dental Technologies, Inc. Dental treatment system
WO1996035390A1 (fr) 1995-05-09 1996-11-14 Danville Engineering, Inc. Appareil a jet de particules abrasives
WO1996035389A1 (fr) 1995-05-08 1996-11-14 Abbott John D Agencement permettant d'acheminer un materiau particulaire sous pression
US5601430A (en) * 1995-09-15 1997-02-11 Kreativ, Inc. Process for the removal of soft tooth decay using a unique abrasive fluid stream
WO1998053954A1 (fr) * 1997-05-30 1998-12-03 Danville Engineering, Inc. Appareil produisant un flux gazeux de particules abrasives et systeme de regulation associe
US6083001A (en) * 1998-10-13 2000-07-04 Kreativ, Inc. Apparatus and method for particle feeding by pressure regulation
US6273789B1 (en) * 1996-03-14 2001-08-14 Lasalle Richard Todd Method of use for supersonic converging-diverging air abrasion nozzle for use on biological organisms
US6425804B1 (en) * 2000-03-21 2002-07-30 Hewlett-Packard Company Pressurized delivery system for abrasive particulate material
US20040198179A1 (en) * 2001-04-21 2004-10-07 Gadd William Michael Abrasive fluid jet system
US20040197731A1 (en) * 2003-03-27 2004-10-07 Swan Keith Daniel Dental abrasive system using helium gas
US20070010174A1 (en) * 2005-07-05 2007-01-11 Keiji Mase Method for feeding an injection material under pressure, a method for blasting using the method, a device for pressurized feeding an injection material under pressure, and a blasting device having the device
US20110081842A1 (en) * 2009-09-28 2011-04-07 Biesse S.P.A Distributor for continuously feeding abrasive material in a water-jet cutting machine
US20120240852A1 (en) * 2011-03-23 2012-09-27 Kevin Wayne Ewers System for spraying metal particulate
US20140104973A1 (en) * 2012-10-15 2014-04-17 Ferton Holding S.A. Mixing device
US20140378028A1 (en) * 2013-06-20 2014-12-25 Mark William Hayden Re-Circulating System for Slurried Abrasive/Liquid Feed to Multiple Abrasive Water Jet Cutting Heads
WO2018054716A1 (fr) * 2016-09-26 2018-03-29 Ferton Holding S.A. Système de nettoyage dentaire, récipient de poudre ainsi qu'insert pour récipient de poudre
US20190061105A1 (en) * 2017-08-23 2019-02-28 Innovative Etching LLC Self-powered pressurized granular particle ejector tool with remote operation
US10524888B1 (en) * 2016-09-30 2020-01-07 Vincent Losack Oral hygiene system

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5550376A (en) * 1978-10-10 1980-04-12 Michio Ooya Pitching device for leisure
JPS58143947A (ja) * 1982-02-19 1983-08-26 Toshiba Glass Co Ltd サンドブラスト装置
US4487582A (en) * 1983-02-18 1984-12-11 Cooper Lasersonics, Inc. Dental cleaning system
JPS60242875A (ja) * 1984-05-18 1985-12-02 中森　雅典 投球練習機
JPS6192680A (ja) * 1984-08-31 1986-05-10 貞松　俊治 ピツチングコントロ−ルセンサ−
DE3508620A1 (de) * 1985-03-11 1986-09-11 Vasipari Kutató és Fejlesztö Vállalat, Budapest Vorrichtung zum dosieren von pulverfoermigen und/oder koernigen guetern oder gutgemischen
US4657250A (en) * 1985-03-25 1987-04-14 Newland Paul H Baseball pitching practice apparatus
DE4122980A1 (de) * 1991-07-11 1993-01-21 Kaltenbach & Voigt Bearbeitungsgeraet zum bearbeiten von feinwerktechnischen, insbesondere dentaltechnischen werkstuecken in einem von einem gehaeuse umgebenen bearbeitungsraum
DE4123019C2 (de) * 1991-07-11 2001-11-22 Kaltenbach & Voigt Bearbeitungsgerät zum Bearbeiten von feinwerktechnischen, insbesondere dentaltechnischen Werkstücken in einem von einem Gehäuse umgebenen Bearbeitungsraum
WO1993016844A1 (fr) * 1992-02-19 1993-09-02 Sabbiatura E Carrozzeria Fontana S.N.C. Dispositif de regulation et de recuperation de sable pour les machines de sablage
US5312251A (en) * 1993-06-18 1994-05-17 Jackson Paul C Dental implement
DE4332226A1 (de) * 1993-09-22 1995-03-23 Wassermann Dental Maschinen Gm Dentaltechnisches Sandstrahlgerät
DE102009008561B3 (de) * 2009-02-12 2010-09-02 Wiwox Gmbh Surface Systems Vorrichtung zum Druckstrahlen
DE102011077995B4 (de) 2011-06-22 2016-09-01 Ferton Holding S.A. Mischvorrichtung für ein dentales Pulverstrahlgerät sowie ein dentales Handinstrument für ein Pulverstrahlgerät mit einer entsprechenden Mischvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1712804A (en) * 1926-07-26 1929-05-14 Wytcherley Edward Sand-blast device
US2553625A (en) * 1950-05-13 1951-05-22 Empire Blast Machine Company Sand blast
US2725684A (en) * 1955-01-27 1955-12-06 Dalton L Crowe Portable sand blaster
US2759266A (en) * 1953-05-11 1956-08-21 Renato E Cassani Dental and surgical abrasive jet apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1712804A (en) * 1926-07-26 1929-05-14 Wytcherley Edward Sand-blast device
US2553625A (en) * 1950-05-13 1951-05-22 Empire Blast Machine Company Sand blast
US2759266A (en) * 1953-05-11 1956-08-21 Renato E Cassani Dental and surgical abrasive jet apparatus
US2725684A (en) * 1955-01-27 1955-12-06 Dalton L Crowe Portable sand blaster

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026072A (en) * 1976-08-09 1977-05-31 Dremann George H Self-cleaning muffler for an abrasive blast system
DE2930836A1 (de) * 1978-07-28 1980-02-14 Gallant Ben Joseph Schleifverfahren und -geraet
DE2930836C3 (de) * 1978-07-28 1999-01-21 Dentsply Res & Dev Verfahren und Vorrichtung zum Reinigen von Zähnen
EP0025156A1 (fr) * 1979-08-22 1981-03-18 Myers-Europe Pumpen GmbH Procédé et installation pour traiter des surfaces avec un jet abrasif humide
EP0119735A1 (fr) * 1983-02-18 1984-09-26 Dentsply Research and Development Corporation Appareil et procédé pour le nettoyage des dents
US4494932A (en) * 1983-02-18 1985-01-22 Cooper Lasersonics, Inc. Dental cleaning apparatus and method
US5158455A (en) * 1990-02-09 1992-10-27 Young Dental Manufacturing Company Control unit for a scaler and a polisher
US5746596A (en) * 1992-03-27 1998-05-05 American Dental Technologies, Inc. Dental treatment method
US5525058A (en) * 1992-03-27 1996-06-11 American Dental Technologies, Inc. Dental treatment system
WO1996035389A1 (fr) 1995-05-08 1996-11-14 Abbott John D Agencement permettant d'acheminer un materiau particulaire sous pression
US5618177A (en) * 1995-05-08 1997-04-08 Dove Systems, Inc. Arrangement for feeding pressurized particulate material
US5718581A (en) * 1995-05-09 1998-02-17 Danville Manufacturing, Inc. Air abrasive particle apparatus
WO1996035390A1 (fr) 1995-05-09 1996-11-14 Danville Engineering, Inc. Appareil a jet de particules abrasives
US5984677A (en) * 1995-05-09 1999-11-16 Danville Engineering Air abrasive particle apparatus
US5601430A (en) * 1995-09-15 1997-02-11 Kreativ, Inc. Process for the removal of soft tooth decay using a unique abrasive fluid stream
US6273789B1 (en) * 1996-03-14 2001-08-14 Lasalle Richard Todd Method of use for supersonic converging-diverging air abrasion nozzle for use on biological organisms
WO1998053954A1 (fr) * 1997-05-30 1998-12-03 Danville Engineering, Inc. Appareil produisant un flux gazeux de particules abrasives et systeme de regulation associe
US6083001A (en) * 1998-10-13 2000-07-04 Kreativ, Inc. Apparatus and method for particle feeding by pressure regulation
US6623335B2 (en) 2000-03-21 2003-09-23 Hewlett-Packard Development Company, L.P. Method of forming ink fill slot of ink-jet printhead
US6435950B1 (en) 2000-03-21 2002-08-20 Hewlett-Packard Company Pressurized delivery method for abrasive particulate material
US6425804B1 (en) * 2000-03-21 2002-07-30 Hewlett-Packard Company Pressurized delivery system for abrasive particulate material
US6623338B2 (en) * 2000-03-21 2003-09-23 Hewlett-Packard Development Company, L.P. Method of abrading silicon substrate
US20040198179A1 (en) * 2001-04-21 2004-10-07 Gadd William Michael Abrasive fluid jet system
US20040197731A1 (en) * 2003-03-27 2004-10-07 Swan Keith Daniel Dental abrasive system using helium gas
US20070010174A1 (en) * 2005-07-05 2007-01-11 Keiji Mase Method for feeding an injection material under pressure, a method for blasting using the method, a device for pressurized feeding an injection material under pressure, and a blasting device having the device
US20110081842A1 (en) * 2009-09-28 2011-04-07 Biesse S.P.A Distributor for continuously feeding abrasive material in a water-jet cutting machine
US8425280B2 (en) * 2009-09-28 2013-04-23 Biesse S.P.A. Distributor for continuously feeding abrasive material in a water-jet cutting machine
US20120240852A1 (en) * 2011-03-23 2012-09-27 Kevin Wayne Ewers System for spraying metal particulate
US8544408B2 (en) * 2011-03-23 2013-10-01 Kevin Wayne Ewers System for applying metal particulate with hot pressurized air using a venturi chamber and a helical channel
US20140104973A1 (en) * 2012-10-15 2014-04-17 Ferton Holding S.A. Mixing device
DE102012109797A1 (de) * 2012-10-15 2014-04-17 Ferton Holding S.A. Mischvorrichtung
DE102012109797B4 (de) * 2012-10-15 2015-08-06 Ferton Holding S.A. Pulverbehälter für ein Pulverstrahlgerät
US20170189867A1 (en) * 2012-10-15 2017-07-06 Ferton Holding S.A. Mixing device
US10751674B2 (en) * 2012-10-15 2020-08-25 Ferton Holding S.A. Mixing device
US20140378028A1 (en) * 2013-06-20 2014-12-25 Mark William Hayden Re-Circulating System for Slurried Abrasive/Liquid Feed to Multiple Abrasive Water Jet Cutting Heads
US9440370B2 (en) * 2013-06-20 2016-09-13 Mark William Hayden Re-circulating system for slurried abrasive/liquid feed to multiple abrasive water jet cutting heads
WO2018054716A1 (fr) * 2016-09-26 2018-03-29 Ferton Holding S.A. Système de nettoyage dentaire, récipient de poudre ainsi qu'insert pour récipient de poudre
US11413115B2 (en) 2016-09-26 2022-08-16 Ferton Holding S.A. Tooth cleaning system, powder container and insert for a powder container
US10524888B1 (en) * 2016-09-30 2020-01-07 Vincent Losack Oral hygiene system
US20190061105A1 (en) * 2017-08-23 2019-02-28 Innovative Etching LLC Self-powered pressurized granular particle ejector tool with remote operation
US10239185B2 (en) * 2017-08-23 2019-03-26 Aeroetch Holdings, Inc. Self-powered pressurized granular particle ejector tool with remote operation

Also Published As

Publication number Publication date
JPS5545348B2 (fr) 1980-11-17
DE2314294A1 (de) 1973-10-18
FR2178671A5 (fr) 1973-11-09
GB1420386A (en) 1976-01-07
JPS4925588A (fr) 1974-03-07

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