US3114654A - Electrostiatic coating apparatus employing supersonic vibrations - Google Patents

Electrostiatic coating apparatus employing supersonic vibrations Download PDF

Info

Publication number
US3114654A
US3114654A US50028A US5002860A US3114654A US 3114654 A US3114654 A US 3114654A US 50028 A US50028 A US 50028A US 5002860 A US5002860 A US 5002860A US 3114654 A US3114654 A US 3114654A
Authority
US
United States
Prior art keywords
tip
horn
coating material
article
vibrations
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
US50028A
Inventor
Nishiyama Shizuo
Takagi Hisao
Anzai Taro
Haga Seiko
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of US3114654A publication Critical patent/US3114654A/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
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0623—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
    • B05B17/063—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn having an internal channel for supplying the liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0623—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns

Definitions

  • he present invention relates to a method of applying the coating material to a desired object, and more particularly to a method of coating, which is characterized in that the coating material is iinely pulverized and dispersed by means of super-sonic vibration and the coating material thus pulverized is adhered to a desired object by means of electrostatic force.
  • the coating material is injected from -a sprayer by compressed air and electrostatic field is acted on the pulverized coating material between the sprayer and the article to be coated so that the tine particles of coating material are caused to pass at a high speed and spread between the sprayer and the article to be coated by means of compressed air and it has disadvantage that the loss of coating material is large and it is diticult to obtain uniform coating.
  • the principal object of this invention is to obviate the above disadvantages by pulverizing the coating material with the aid of super-sonic vibration and without loss of the coating material and very uniformly and efficiently.
  • Another object of this invention is to provide a novel device for etfecting the method of this invention.
  • FIG. l is a diagrammatic view of a device for carrying out the method of this invention.
  • FlG. 2 is a modified embodiment of the device.
  • NGS. 3, 4, 5 and 6 ⁇ are diagram-matic views illustrating other modified forms of the device.
  • FIGS. 7, 8, 9 and 10 are partial sectional views illustrating various modi-ficatioins of the horn tip.
  • l represents a super-sonic vibrator which lgenerally is provided with a nickel core 2 and coils (not shown) connected to a high frequency electric source d, thereby causing supersonic magneto striction vibration.
  • 5 represents a horn having conical or gradually converging shape and it is rigidly secured to the super-sonic vibrator l at its base so that the top end 5 of the horn 5 is subjected to the concentration of the super-sonic energy when the vibrator l is driven electrically from the high frequency electric source ⁇ 4.
  • the coating material 6 represents a tank or reservoir for the coating material, which is connected to a pipe 7 through a regulating valve 8 and the end 7 of the pipe '7 is brought to open at a point adjacent to the tip 5' of the horn to discharge the coating material therefrom.
  • the principle or" operation of this invention is characterized in that when the coating material in the tank 6 ows out of the tip end 7 of pipe 7 it contacts with the tip 5 of the horn 5 and subjected to a violent oscillation of the tip 5 and is pulverized ,and thrown in the direction of the arrows and the coating material thus pulverized is forced to adhere onto the article l2 to be coated by the electrostatic field applied between the ring l@ and the article l2.
  • the speed of the particles of coating material iinely pulverized by the super-sonic vibration are very small and merely oat in the space so that coating material thus pulverized adheres to the article lf2 by the electrostatic orce without substantial loss.
  • the feed pipe 7 of the coating material is passed through the inside hole 7 of horn 5 and opens at its tip end 5. All the other parts are similar to those shown in FlG. l.
  • the horn 5 is so shaped that it has a long iiat tip 5 from which opposite sides gradually diverge to the rectangular base which is rigidly secured to a magneto striction core 2 and the lower end 7 of the pipe 7 is brought to make contact with one end of the t-ip portion 5. All the other parts are same as those shown in FIG. l.
  • the area of the coating material making Contact with the mechanical vibrating body is increased so that the quantity of coating material to be sprayed is increased and also the iineness of sprayed particles of the coating material are very uniform.
  • the symmetrically converged horn 5 for concentrating the super-sonic vibration is operated by the magneto striction vibrator l which is driven by the coil 2 connected to a high frequency electric source and has the at elongated tip end 5', the area of which is equal to tl 'and oscillate in the longitudinal direc-tion so that the coating material flowing out of the open end 7 of the feed pipe makes contact with the oscillating surface 5 of the horn 5 and then subjected to a violent oscillation of the surface 5 and advances upwards as shown by the arrows B and it is dispersed as a thin film on the vibrating surface 5 and then it is discharged into the space as line particles.
  • the ⁇ finely pulverized particles of the coating material thus issued are guided to the article 12 to be coated thereon by means or unidirectional electrostatic lield applied between the object and tip 5' of the horn 5'.
  • the phenomena of coating material advancing upwards along the tip surface 5' and then pulverized and thrown out has been practically proved for the irst time by the inventors and by this phenomena the Contact area of the coating material with oscillating surfa 5 is increased so that the quantity of coating material to be sprayed lis increased and the coating material, after dispersed on the vibrating surface 5 as a thin film, is pulverized.
  • the particles of the coating mate rial can be more finely pulverized and has characteristic of that the fineness of particles thus pulverized remains uniform during the continuous operation for a long time.
  • a piece i3 having a special shape, for instance, a semi-spherical shape is attached to the tip o'f the horn 5 and the feeding hole 7 provided through the horn is communicated with two or more small holes lili provided in the piece 13. All the remaining parts are same as those shown in FIG. l.
  • the semi-spherical piece i3 secured to the tip end of horn 5 is violently oscillated by means of the magneto striction vibrator il and the coating material flowing out of the small holes M- is formed into a thin film over the surface of the piece i3 and ejected in the direction of the arrows C, and pulverized, and then adhered to the article l2 by means of DC. electrostatic force so that the line particles of coating material do not concentrate only in the central axial direction D but also sprayed into the space for a wide range.
  • the small holes 5.4 may be provided for a desired number in order to further increase the effect of dispersion.
  • the shape of the top piece i3 may be changed, for instance,
  • a tip portion 5c of the conical horn 5 ⁇ for concentrating super-sonic vibration is made of a conducting material and the remaining part of the horn is made of insulating material. All the other arrangements are same as those shown in FIG. 2 except the conducting tip of the horn which is connected to a high voltage source of direct current. In this arrangement, the operation is same as that already described and the horn 5 of insulating material has advantage of avoiding the stray field and proving insulation between the supersonic vibrator and the direct current hi gh voltage source.
  • the units as shown in FIGS. 1 or 2 is assembled in parallel and the tip 5', 5 of the horn 51 and 52 surounded by a metal ring I@ which is connected to a direct current high voltage source (not shown).
  • the pulverized coating material issuing from the tips of the horns extends in vertical rows like an elliptic form.
  • the fine particles of coating material can be sprayed and dispersed in a desired direction and also the iineness of the sprayed particle can be made smaller and more uniform by changing the shape of the tip of horn. Some examples of which are shown in FIGS. 7, 8, 9 and 10.
  • a small knob 15 is attached to or made integral of the tip of the horn 5 to form a cup-shaped space communicating with the feed hole of the coating material.
  • the coating material delivered to the cup-shaped space 16 is pulverized by super-sonic vibration of the horn 5 and sprayed out along the axis of the horn.
  • FIG. S a disc 17 having almost same diameter as the tip of the horn 5 is secured to or made integral thereof to form a circular gap between them.
  • the coating material is dispersed almost radially.
  • the disc 17 in FIG. 8 is made smaller in diameter than that of the tip of the horn as shown by 17 in FIG. 9, then the coating material is ejected along the direction shown by the arrow extending about 45 to the axis of the horn.
  • the coating material supplied through the hole 7 provided in the horn is filled in the small gap around the tip by capillary action and is pulverizcd very finely by the supersonic vibration by designing the gap very narrow so that the coating material can be adhered to the article uniformly.
  • the thickness of the gap is very thin and the particle therein is also very thin the static torce corresponding thereto is only the molecular attraction due to the capillary action and the effect of gravity may be substantially neglected.
  • the dispersion of the coating material is caused by super-sonic vibration along the thin gap irrespective of the direction of the horn the most efficient coating can be elected by considering the condition of position of the device in case of coating. If the gap is too large a fibrous insert such as a felt washer may be inserted in the gap to obtain the similar result to a thin gap.
  • a device for applying coating material to an article comprising a magneto striction source for generating supersonic vibrations, a converging horn, the base of which is rigidly secured to said source for transmission of th vibrations from said source and concentrating said vibrations to the tip of said horn, said tip comprising a semispherical tip having a plurality of small holes communieating between a central hole in said horn and thc surface of said tip, means for feeding the coating material through the holes in said tip to the surface thereof thereby to eject said material in a spray towards said article and means for establishing a direct current electrostatic held between said spray of said material and said article.
  • a device for applying coating material to an article comprising a magneto striction source for generating supersonic vibrations, a converging horn, the base ot which is rigidly secured to said source for transmission ci the vibrations from said source and concentrating said vibrations to the tip of said horn, said tip being formed with a cup-shaped gap, means for feeding said material into said gap, thereby to eject said material in a spray towards said article and means for establishing a direct current electrostatic field between said spray ot' said material and said article.
  • a device for applying coating material to an article comprising a maaneto striction source for generating supersonic vibrations, a converging horn, the base of which is rigidly secured to said source for transmission or the vibrations from said source and concentrating said vibrations to the tip of said horn, said tip being formed with a thin circumferential gap which is substantially the same diameter as the tip, means for feeding material into said gap, thereby to eject said material in a spray towards said article and means for establishing a direct current electrostatic field between said spray of said material and said article.
  • a device for applying coating material to an article comprising a magneto striction source for generating supersonic vibrations, a converging horn, the base of which is rigidly secured to said source for transmission of the vibrations from said source and concentrating said vibrations to the tip of said horn, said tip being formed with a thin circumferential gap which is smaller than the diameter of said tip, means for feeding material into said gap thereby to eject said material in a direction of 45 with respect to the axis of the horn in a spray towards said article and means vfor establishing a direct current electrostatic eld between said spray of said material and said article.
  • a device for applying coating material to an article comprising a magneto striction source for generating supersonic vibrations, a converging horn, the base of which is rigidly secured to said source for transmission of the vibrations from said source and concentrating said vibrations to the tip of said horn, said tip being formed with semicircular grooves formed therein, means for feeding the coating material into said grooves thereby to eject said material in a direction ⁇ diverging about the axis of the horn in a spray towards said article and means for establishing a direct current electrostatic field between said spray of said material and said article.

Description

De@ 17, 1963 sl-nzuo NlsHlYAMA ETAI. 3,114,654.
ELEcfrRosTATIc coATINc APPARATUS EMPLOYING suPERsoNIc VIBRATIoNs Filed Aug. 1e, 19Go 3 Sheets-Sheet 1 INVENTORS'. SH12 ua ,v/sH/ MMA SE1/ra funn Dec. 17, 1963 sHlzuo NISHIYAMA ETAL ELECTROSTATIC COATING APPARATUS EMPLOYING SUPERSONIC-VBRATIONS Filed Aug. 16, 1960 .3 Sheets-Sheet 2 De@ 17, 1953 I sHlzuo NlsHlYAMA ETAL 3,114,654
ELECTROSTATIC COATING APPARATUS EMPLOYING SUPERSONIC VIBRATIQNS Filed Aug. 16, 1960 5 Sheets-Sheet 3 fil-@ 10 5 /llllllllll///l l 17' /a// 7 20 SII/z uo Al nited States Patent Utilice Patented Dec. l?, i963 lFied Aug. 116, 19t/itl, Ser. No. @,026 Claims priority, application Iapnn Dec. 14, 1959 Claims. (Cl. 1l8-627) he present invention relates to a method of applying the coating material to a desired object, and more particularly to a method of coating, which is characterized in that the coating material is iinely pulverized and dispersed by means of super-sonic vibration and the coating material thus pulverized is adhered to a desired object by means of electrostatic force.
lt has heretofore been usual to use a coating device which utilizes corona discharge or compressed air for pulverizing the coating material.
in a so-called grid type electrostatic coating device, the coating material is injected from -a sprayer by compressed air and electrostatic field is acted on the pulverized coating material between the sprayer and the article to be coated so that the tine particles of coating material are caused to pass at a high speed and spread between the sprayer and the article to be coated by means of compressed air and it has disadvantage that the loss of coating material is large and it is diticult to obtain uniform coating.
The principal object of this invention is to obviate the above disadvantages by pulverizing the coating material with the aid of super-sonic vibration and without loss of the coating material and very uniformly and efficiently.
Another object of this invention is to provide a novel device for etfecting the method of this invention.
For a better understanding of this invention, reference is had to the accompanying drawings, in which:
FIG. l is a diagrammatic view of a device for carrying out the method of this invention.
FlG. 2 is a modified embodiment of the device.
NGS. 3, 4, 5 and 6` are diagram-matic views illustrating other modified forms of the device.
FIGS. 7, 8, 9 and 10 are partial sectional views illustrating various modi-ficatioins of the horn tip.
in all of these drawings, the same reference nurnerals designate the same or similar parts.
in an embodiment of this invention as shown in FlG. 1, l represents a super-sonic vibrator which lgenerally is provided with a nickel core 2 and coils (not shown) connected to a high frequency electric source d, thereby causing supersonic magneto striction vibration. 5 represents a horn having conical or gradually converging shape and it is rigidly secured to the super-sonic vibrator l at its base so that the top end 5 of the horn 5 is subjected to the concentration of the super-sonic energy when the vibrator l is driven electrically from the high frequency electric source `4.
6 represents a tank or reservoir for the coating material, which is connected to a pipe 7 through a regulating valve 8 and the end 7 of the pipe '7 is brought to open at a point adjacent to the tip 5' of the horn to discharge the coating material therefrom.
9 represents means for causing unidirectional electrostatic ield which consists, -as for instance, of a metal ring lll connected through a direct current high voltage source 1i to an article l2 to be coated.
The principle or" operation of this invention is characterized in that when the coating material in the tank 6 ows out of the tip end 7 of pipe 7 it contacts with the tip 5 of the horn 5 and subjected to a violent oscillation of the tip 5 and is pulverized ,and thrown in the direction of the arrows and the coating material thus pulverized is forced to adhere onto the article l2 to be coated by the electrostatic field applied between the ring l@ and the article l2. The speed of the particles of coating material iinely pulverized by the super-sonic vibration are very small and merely oat in the space so that coating material thus pulverized adheres to the article lf2 by the electrostatic orce without substantial loss.
In a modiiied form of the device according to this invention as shown in FIG. 2, the feed pipe 7 of the coating material is passed through the inside hole 7 of horn 5 and opens at its tip end 5. All the other parts are similar to those shown in FlG. l.
ln the embodiment of this yinvention as shown in FlG. 3, the horn 5 is so shaped that it has a long iiat tip 5 from which opposite sides gradually diverge to the rectangular base which is rigidly secured to a magneto striction core 2 and the lower end 7 of the pipe 7 is brought to make contact with one end of the t-ip portion 5. All the other parts are same as those shown in FIG. l.
By this arrangement, the area of the coating material making Contact with the mechanical vibrating body is increased so that the quantity of coating material to be sprayed is increased and also the iineness of sprayed particles of the coating material are very uniform.
In this embodiment, the symmetrically converged horn 5 for concentrating the super-sonic vibration is operated by the magneto striction vibrator l which is driven by the coil 2 connected to a high frequency electric source and has the at elongated tip end 5', the area of which is equal to tl 'and oscillate in the longitudinal direc-tion so that the coating material flowing out of the open end 7 of the feed pipe makes contact with the oscillating surface 5 of the horn 5 and then subjected to a violent oscillation of the surface 5 and advances upwards as shown by the arrows B and it is dispersed as a thin film on the vibrating surface 5 and then it is discharged into the space as line particles. The `finely pulverized particles of the coating material thus issued are guided to the article 12 to be coated thereon by means or unidirectional electrostatic lield applied between the object and tip 5' of the horn 5'. The phenomena of coating material advancing upwards along the tip surface 5' and then pulverized and thrown out has been practically proved for the irst time by the inventors and by this phenomena the Contact area of the coating material with oscillating surfa 5 is increased so that the quantity of coating material to be sprayed lis increased and the coating material, after dispersed on the vibrating surface 5 as a thin film, is pulverized. By this means the particles of the coating mate rial can be more finely pulverized and has characteristic of that the fineness of particles thus pulverized remains uniform during the continuous operation for a long time.
in the embodiment as shown in FIG. 4, a piece i3 having a special shape, for instance, a semi-spherical shape is attached to the tip o'f the horn 5 and the feeding hole 7 provided through the horn is communicated with two or more small holes lili provided in the piece 13. All the remaining parts are same as those shown in FIG. l. In this embodiment the semi-spherical piece i3 secured to the tip end of horn 5 is violently oscillated by means of the magneto striction vibrator il and the coating material flowing out of the small holes M- is formed into a thin film over the surface of the piece i3 and ejected in the direction of the arrows C, and pulverized, and then adhered to the article l2 by means of DC. electrostatic force so that the line particles of coating material do not concentrate only in the central axial direction D but also sprayed into the space for a wide range. The small holes 5.4 may be provided for a desired number in order to further increase the effect of dispersion. Moreover the shape of the top piece i3 may be changed, for instance,
to an ellipsoid or any other shape suitable for dispersing the spray.
In the embodiment as shown in FIG. 5, a tip portion 5c of the conical horn 5 `for concentrating super-sonic vibration is made of a conducting material and the remaining part of the horn is made of insulating material. All the other arrangements are same as those shown in FIG. 2 except the conducting tip of the horn which is connected to a high voltage source of direct current. In this arrangement, the operation is same as that already described and the horn 5 of insulating material has advantage of avoiding the stray field and proving insulation between the supersonic vibrator and the direct current hi gh voltage source.
In the embodiment as shown in FIG. 6, the units as shown in FIGS. 1 or 2 is assembled in parallel and the tip 5', 5 of the horn 51 and 52 surounded by a metal ring I@ which is connected to a direct current high voltage source (not shown).
By this arrangement the pulverized coating material issuing from the tips of the horns extends in vertical rows like an elliptic form. Thus by assembling a desired number of the horns and super-sonic vibrating units the range or length of the coating area can be increased or elongated as desired.
According to this invention, the fine particles of coating material can be sprayed and dispersed in a desired direction and also the iineness of the sprayed particle can be made smaller and more uniform by changing the shape of the tip of horn. Some examples of which are shown in FIGS. 7, 8, 9 and 10.
In FIG. 7, a small knob 15 is attached to or made integral of the tip of the horn 5 to form a cup-shaped space communicating with the feed hole of the coating material. In this construction the coating material delivered to the cup-shaped space 16 is pulverized by super-sonic vibration of the horn 5 and sprayed out along the axis of the horn.
In FIG. S, a disc 17 having almost same diameter as the tip of the horn 5 is secured to or made integral thereof to form a circular gap between them. In this case the coating material is dispersed almost radially.
Ir the disc 17 in FIG. 8 is made smaller in diameter than that of the tip of the horn as shown by 17 in FIG. 9, then the coating material is ejected along the direction shown by the arrow extending about 45 to the axis of the horn.
If the knob 19 as shown in FIG. 10 is secured to the tip of the horn to form a semi-circular groove between them the coating material can be sprayed in a direction almost similar to that of FIG. 9. In the embodiments shown in FIGS. 7 to 10, the coating material supplied through the hole 7 provided in the horn is filled in the small gap around the tip by capillary action and is pulverizcd very finely by the supersonic vibration by designing the gap very narrow so that the coating material can be adhered to the article uniformly. Moreover, since the thickness of the gap is very thin and the particle therein is also very thin the static torce corresponding thereto is only the molecular attraction due to the capillary action and the effect of gravity may be substantially neglected. Since the dispersion of the coating material is caused by super-sonic vibration along the thin gap irrespective of the direction of the horn the most efficient coating can be elected by considering the condition of position of the device in case of coating. If the gap is too large a fibrous insert such as a felt washer may be inserted in the gap to obtain the similar result to a thin gap.
What we claim is:
1. A device for applying coating material to an article comprising a magneto striction source for generating supersonic vibrations, a converging horn, the base of which is rigidly secured to said source for transmission of th vibrations from said source and concentrating said vibrations to the tip of said horn, said tip comprising a semispherical tip having a plurality of small holes communieating between a central hole in said horn and thc surface of said tip, means for feeding the coating material through the holes in said tip to the surface thereof thereby to eject said material in a spray towards said article and means for establishing a direct current electrostatic held between said spray of said material and said article.
2. A device for applying coating material to an article comprising a magneto striction source for generating supersonic vibrations, a converging horn, the base ot which is rigidly secured to said source for transmission ci the vibrations from said source and concentrating said vibrations to the tip of said horn, said tip being formed with a cup-shaped gap, means for feeding said material into said gap, thereby to eject said material in a spray towards said article and means for establishing a direct current electrostatic field between said spray ot' said material and said article.
3. A device for applying coating material to an article comprising a maaneto striction source for generating supersonic vibrations, a converging horn, the base of which is rigidly secured to said source for transmission or the vibrations from said source and concentrating said vibrations to the tip of said horn, said tip being formed with a thin circumferential gap which is substantially the same diameter as the tip, means for feeding material into said gap, thereby to eject said material in a spray towards said article and means for establishing a direct current electrostatic field between said spray of said material and said article.
4. A device for applying coating material to an article comprising a magneto striction source for generating supersonic vibrations, a converging horn, the base of which is rigidly secured to said source for transmission of the vibrations from said source and concentrating said vibrations to the tip of said horn, said tip being formed with a thin circumferential gap which is smaller than the diameter of said tip, means for feeding material into said gap thereby to eject said material in a direction of 45 with respect to the axis of the horn in a spray towards said article and means vfor establishing a direct current electrostatic eld between said spray of said material and said article.
5. A device for applying coating material to an article comprising a magneto striction source for generating supersonic vibrations, a converging horn, the base of which is rigidly secured to said source for transmission of the vibrations from said source and concentrating said vibrations to the tip of said horn, said tip being formed with semicircular grooves formed therein, means for feeding the coating material into said grooves thereby to eject said material in a direction `diverging about the axis of the horn in a spray towards said article and means for establishing a direct current electrostatic field between said spray of said material and said article.
References Cited in the file of this patent UNITED STATES PATENTS

Claims (1)

1. A DEVICE FOR APPLYING COATING MATERIAL TO AN ARTICLE COMPRISING A MAGNETO STRICTION SOURCE FOR GENERATING SUPERSONIC VIBRATIONS, A CONVERGING HORA, THE BASE OF WHICH IS RIGIDLY SECURED TO SAID SOURCE FOR TRANSMISSION OF THE VIBRATIONS FROM SAID SOURCE AND CONCENTRATING SAID VIBRATIONS TO THE TIP OF SAID HORN, SAID TIP COMPRISING A SEMISPHERICAL TIP HAVING A PLURALITY OF SMALL HOLES COMMUNICATING BETWEEN A CENTRAL HOLE IN SAID HORN AND THE SURFACE OF SAID TIP, MEANS FOR FEEDING THE COATING MATERIAL THROUGH THE HOLES IN SAID TIP TO THE SURFACE THEREOF THEREBY TO EJECT SAID MATERIAL IN A SPRAY TOWARDSSAID ARTICLE AND MEANS FOR ESTABLISHING A DIRECT CURRENT ELECTROSTATIC FIELD BETWEEN SAID SPRAY OF SAID MATERIAL AND SAID ARTICLE.
US50028A 1959-12-14 1960-08-16 Electrostiatic coating apparatus employing supersonic vibrations Expired - Lifetime US3114654A (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP3863159 1959-12-14
JP219160 1960-01-23
JP1409360 1960-03-25
JP919060 1960-03-25
JP1429960 1960-03-28
JP1430060 1960-03-28
JP1430160 1960-03-28
JP1463460 1960-03-29

Publications (1)

Publication Number Publication Date
US3114654A true US3114654A (en) 1963-12-17

Family

ID=27571460

Family Applications (1)

Application Number Title Priority Date Filing Date
US50028A Expired - Lifetime US3114654A (en) 1959-12-14 1960-08-16 Electrostiatic coating apparatus employing supersonic vibrations

Country Status (3)

Country Link
US (1) US3114654A (en)
GB (1) GB956715A (en)
NL (1) NL255983A (en)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243122A (en) * 1965-02-24 1966-03-29 Alvin A Snaper Ultrasonic spray apparatus
US3317139A (en) * 1965-04-13 1967-05-02 Simms Group Res Dev Ltd Devices for generating and delivering mechanical vibrations to a nozzle
US3375977A (en) * 1964-03-25 1968-04-02 Philips Corp Ultrasonic atomiser
US3400892A (en) * 1965-12-02 1968-09-10 Battelle Development Corp Resonant vibratory apparatus
US3648929A (en) * 1971-02-08 1972-03-14 Battelle Memorial Institute Atomizer
US3700169A (en) * 1970-10-20 1972-10-24 Environment One Corp Process and appratus for the production of hydroelectric pulsed liquids jets
US3756575A (en) * 1971-07-19 1973-09-04 Resources Research & Dev Corp Apparatus for producing a fuel-air mixture by sonic energy
US3851823A (en) * 1972-07-04 1974-12-03 Matsushita Electric Ind Co Ltd Burner with ultrasonic vibrator
US3907940A (en) * 1970-09-25 1975-09-23 Arthur K Thatcher Sonic carburetor system
US4085893A (en) * 1974-03-20 1978-04-25 Durley Iii Benton A Ultrasonic humidifiers, atomizers and the like
US4264641A (en) * 1977-03-17 1981-04-28 Phrasor Technology Inc. Electrohydrodynamic spraying to produce ultrafine particles
US4311275A (en) * 1978-12-18 1982-01-19 Lindkvist Allan Erik Device for use in apparatus for thermal spraying
US4326553A (en) * 1980-08-28 1982-04-27 Rca Corporation Megasonic jet cleaner apparatus
US4466436A (en) * 1980-01-17 1984-08-21 Sukoo Lee Surgical stapler
US4520786A (en) * 1980-02-04 1985-06-04 Arthur K. Thatcher Revokable Trust Sonic dispersion unit and control system therefor
US4648557A (en) * 1983-10-04 1987-03-10 General Dispensing Systems Limited Transport system for material in powder or like form
US4674286A (en) * 1972-09-29 1987-06-23 Arthur K. Thatcher Sonic dispersion unit and control system therefor
US5049404A (en) * 1987-04-01 1991-09-17 Polaroid Corporation Method and apparatus for applying ultra-thin coatings to a substrate
US5115971A (en) * 1988-09-23 1992-05-26 Battelle Memorial Institute Nebulizer device
US5387444A (en) * 1992-02-27 1995-02-07 Dymax Corporation Ultrasonic method for coating workpieces, preferably using two-part compositions
US5400975A (en) * 1993-11-04 1995-03-28 S. C. Johnson & Son, Inc. Actuators for electrostatically charged aerosol spray systems
WO1997009126A1 (en) * 1995-09-08 1997-03-13 Aeroquip Corporation Three-dimensional layer-by-layer apparatus and method
US5632445A (en) * 1990-11-22 1997-05-27 Dubruque; Dominique Ultrasonic fluid spraying device
US5662260A (en) * 1994-07-13 1997-09-02 Yoon; Inbae Surgical staple cartridge
US5746844A (en) * 1995-09-08 1998-05-05 Aeroquip Corporation Method and apparatus for creating a free-form three-dimensional article using a layer-by-layer deposition of molten metal and using a stress-reducing annealing process on the deposited metal
US5787965A (en) * 1995-09-08 1998-08-04 Aeroquip Corporation Apparatus for creating a free-form metal three-dimensional article using a layer-by-layer deposition of a molten metal in an evacuation chamber with inert environment
US5810260A (en) * 1994-02-25 1998-09-22 Flow Research Evaluation Diagnostics Limited Liquid distributors
US6039059A (en) * 1996-09-30 2000-03-21 Verteq, Inc. Wafer cleaning system
BE1013168A3 (en) * 1999-12-03 2001-10-02 Univ Catholique De Louvain Hal Pulveriser comprising an active end in a specific shape and an activeultrasonic pulverising end
US20030048038A1 (en) * 2001-08-30 2003-03-13 Tsai Shirley Cheng Multiple horn atomizer with high frequency capability
CN105728254A (en) * 2016-04-01 2016-07-06 江苏大学 Low-frequency electrostatic ultrasonic atomization nozzle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132114B (en) * 1982-12-22 1986-02-05 Standard Telephones Cables Ltd Ultrasonic nebuliser for atomic spectroscopy
GB8826357D0 (en) * 1988-11-10 1988-12-14 Ici Plc Atomisation of liquids

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2512743A (en) * 1946-04-01 1950-06-27 Rca Corp Jet sprayer actuated by supersonic waves
US2729191A (en) * 1950-07-15 1956-01-03 Ransburg Electro Coating Corp Electrostatic coating apparatus
US2766064A (en) * 1955-08-22 1956-10-09 Howard V Schweitzer Paint gun
CA569700A (en) * 1959-01-27 J. Lamm Lewis Method and apparatus of charging particles in electrostatic sprays
US2881092A (en) * 1956-12-10 1959-04-07 Jr John Sedlacsik Spray device actuated by supersonic means
US2893893A (en) * 1950-01-31 1959-07-07 Ransburg Electro Coating Corp Method and apparatus for electrostatic coating
US2955958A (en) * 1956-03-05 1960-10-11 Nathan J Brown Process of treating woven textile fabric with a vinyl chloride polymer
US2967331A (en) * 1956-11-26 1961-01-10 Int Latex Corp Method of forming deposited latex articles

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA569700A (en) * 1959-01-27 J. Lamm Lewis Method and apparatus of charging particles in electrostatic sprays
US2512743A (en) * 1946-04-01 1950-06-27 Rca Corp Jet sprayer actuated by supersonic waves
US2893893A (en) * 1950-01-31 1959-07-07 Ransburg Electro Coating Corp Method and apparatus for electrostatic coating
US2729191A (en) * 1950-07-15 1956-01-03 Ransburg Electro Coating Corp Electrostatic coating apparatus
US2766064A (en) * 1955-08-22 1956-10-09 Howard V Schweitzer Paint gun
US2955958A (en) * 1956-03-05 1960-10-11 Nathan J Brown Process of treating woven textile fabric with a vinyl chloride polymer
US2967331A (en) * 1956-11-26 1961-01-10 Int Latex Corp Method of forming deposited latex articles
US2881092A (en) * 1956-12-10 1959-04-07 Jr John Sedlacsik Spray device actuated by supersonic means

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3375977A (en) * 1964-03-25 1968-04-02 Philips Corp Ultrasonic atomiser
US3243122A (en) * 1965-02-24 1966-03-29 Alvin A Snaper Ultrasonic spray apparatus
US3317139A (en) * 1965-04-13 1967-05-02 Simms Group Res Dev Ltd Devices for generating and delivering mechanical vibrations to a nozzle
US3400892A (en) * 1965-12-02 1968-09-10 Battelle Development Corp Resonant vibratory apparatus
US3907940A (en) * 1970-09-25 1975-09-23 Arthur K Thatcher Sonic carburetor system
US3700169A (en) * 1970-10-20 1972-10-24 Environment One Corp Process and appratus for the production of hydroelectric pulsed liquids jets
US3648929A (en) * 1971-02-08 1972-03-14 Battelle Memorial Institute Atomizer
US3756575A (en) * 1971-07-19 1973-09-04 Resources Research & Dev Corp Apparatus for producing a fuel-air mixture by sonic energy
US3851823A (en) * 1972-07-04 1974-12-03 Matsushita Electric Ind Co Ltd Burner with ultrasonic vibrator
US4674286A (en) * 1972-09-29 1987-06-23 Arthur K. Thatcher Sonic dispersion unit and control system therefor
US4085893A (en) * 1974-03-20 1978-04-25 Durley Iii Benton A Ultrasonic humidifiers, atomizers and the like
US4264641A (en) * 1977-03-17 1981-04-28 Phrasor Technology Inc. Electrohydrodynamic spraying to produce ultrafine particles
US4311275A (en) * 1978-12-18 1982-01-19 Lindkvist Allan Erik Device for use in apparatus for thermal spraying
US4466436A (en) * 1980-01-17 1984-08-21 Sukoo Lee Surgical stapler
US4520786A (en) * 1980-02-04 1985-06-04 Arthur K. Thatcher Revokable Trust Sonic dispersion unit and control system therefor
US4326553A (en) * 1980-08-28 1982-04-27 Rca Corporation Megasonic jet cleaner apparatus
US4648557A (en) * 1983-10-04 1987-03-10 General Dispensing Systems Limited Transport system for material in powder or like form
US5049404A (en) * 1987-04-01 1991-09-17 Polaroid Corporation Method and apparatus for applying ultra-thin coatings to a substrate
US5115971A (en) * 1988-09-23 1992-05-26 Battelle Memorial Institute Nebulizer device
US5632445A (en) * 1990-11-22 1997-05-27 Dubruque; Dominique Ultrasonic fluid spraying device
US5387444A (en) * 1992-02-27 1995-02-07 Dymax Corporation Ultrasonic method for coating workpieces, preferably using two-part compositions
US5400975A (en) * 1993-11-04 1995-03-28 S. C. Johnson & Son, Inc. Actuators for electrostatically charged aerosol spray systems
US5941460A (en) * 1994-02-25 1999-08-24 Flow Research Evaluation Diagnostics Limited Liquid distributors
US5810260A (en) * 1994-02-25 1998-09-22 Flow Research Evaluation Diagnostics Limited Liquid distributors
US5662259A (en) * 1994-07-13 1997-09-02 Yoon; Inbae Method of stapling anatomical tissue
US5662260A (en) * 1994-07-13 1997-09-02 Yoon; Inbae Surgical staple cartridge
US5718951A (en) * 1995-09-08 1998-02-17 Aeroquip Corporation Method and apparatus for creating a free-form three-dimensional article using a layer-by-layer deposition of a molten metal and deposition of a powdered metal as a support material
US5746844A (en) * 1995-09-08 1998-05-05 Aeroquip Corporation Method and apparatus for creating a free-form three-dimensional article using a layer-by-layer deposition of molten metal and using a stress-reducing annealing process on the deposited metal
US5787965A (en) * 1995-09-08 1998-08-04 Aeroquip Corporation Apparatus for creating a free-form metal three-dimensional article using a layer-by-layer deposition of a molten metal in an evacuation chamber with inert environment
WO1997009126A1 (en) * 1995-09-08 1997-03-13 Aeroquip Corporation Three-dimensional layer-by-layer apparatus and method
US5960853A (en) * 1995-09-08 1999-10-05 Aeroquip Corporation Apparatus for creating a free-form three-dimensional article using a layer-by-layer deposition of a molten metal and deposition of a powdered metal as a support material
US7211932B2 (en) 1996-09-30 2007-05-01 Akrion Technologies, Inc. Apparatus for megasonic processing of an article
US7268469B2 (en) 1996-09-30 2007-09-11 Akrion Technologies, Inc. Transducer assembly for megasonic processing of an article and apparatus utilizing the same
US8771427B2 (en) 1996-09-30 2014-07-08 Akrion Systems, Llc Method of manufacturing integrated circuit devices
US6295999B1 (en) 1996-09-30 2001-10-02 Verteq, Inc. Wafer cleaning method
US6463938B2 (en) 1996-09-30 2002-10-15 Verteq, Inc. Wafer cleaning method
US8257505B2 (en) 1996-09-30 2012-09-04 Akrion Systems, Llc Method for megasonic processing of an article
US7518288B2 (en) 1996-09-30 2009-04-14 Akrion Technologies, Inc. System for megasonic processing of an article
US6681782B2 (en) 1996-09-30 2004-01-27 Verteq, Inc. Wafer cleaning
US6684891B2 (en) 1996-09-30 2004-02-03 Verteq, Inc. Wafer cleaning
US20040206371A1 (en) * 1996-09-30 2004-10-21 Bran Mario E. Wafer cleaning
US6140744A (en) * 1996-09-30 2000-10-31 Verteq, Inc. Wafer cleaning system
US7117876B2 (en) 1996-09-30 2006-10-10 Akrion Technologies, Inc. Method of cleaning a side of a thin flat substrate by applying sonic energy to the opposite side of the substrate
US6039059A (en) * 1996-09-30 2000-03-21 Verteq, Inc. Wafer cleaning system
BE1013168A3 (en) * 1999-12-03 2001-10-02 Univ Catholique De Louvain Hal Pulveriser comprising an active end in a specific shape and an activeultrasonic pulverising end
US6837445B1 (en) * 2001-08-30 2005-01-04 Shirley Cheng Tsai Integral pump for high frequency atomizer
US6669103B2 (en) * 2001-08-30 2003-12-30 Shirley Cheng Tsai Multiple horn atomizer with high frequency capability
US20030048038A1 (en) * 2001-08-30 2003-03-13 Tsai Shirley Cheng Multiple horn atomizer with high frequency capability
CN105728254A (en) * 2016-04-01 2016-07-06 江苏大学 Low-frequency electrostatic ultrasonic atomization nozzle

Also Published As

Publication number Publication date
NL255983A (en)
GB956715A (en) 1964-04-29

Similar Documents

Publication Publication Date Title
US3114654A (en) Electrostiatic coating apparatus employing supersonic vibrations
US2855244A (en) Sonic liquid-spraying and atomizing apparatus
US4004733A (en) Electrostatic spray nozzle system
US2710773A (en) Electrostatic spray coating apparatus
US2302185A (en) Electrified spray apparatus
US3673601A (en) Liquid jet recorder
US3589607A (en) Electrostatic spray gun having an adjustable spray material orifice
US3198170A (en) Ultrasonic-wave painting machine
US10610880B2 (en) Low frequency electrostatic ultrasonic atomising nozzle
US8122701B2 (en) Electrostatic colloid thruster
AU610807B2 (en) Drop deflection device and method for drop marking systems
US2901177A (en) Spraying apparatus
JPS5852588B2 (en) Aerosol particle charging device
US2881092A (en) Spray device actuated by supersonic means
US3010428A (en) Spraying devices
US3108749A (en) Vibratory apparatus for atomizing liquids
US3357641A (en) Aerosol generator
US2901178A (en) Spraying apparatus
US3498540A (en) Nozzle for powder spraying
US3147146A (en) Means for preconditioning and deposition of coating material
US2966310A (en) Electrostatic deposition spray means
US3181502A (en) Manufacturing apparatus and method for operating the same
JPH04207798A (en) Ultrasonic atomizer
WO2022264274A1 (en) Sample liquid atomization device and analysis device
GB1012129A (en) Improvements in or relating to electrostatic coating apparatus