公开(公告)号：US3621815A

公开(公告)日：1971-11-23

申请号：US85225369

申请日：1969-08-22

Applicant: GRACO INC

Inventor： WALBERG ARVID C

IPC: B05B5/03 ,  B05B5/08 ,  B05B13/04 ,  C23D5/02 ,  B05B5/02

CPC classification number: C23D5/02 ,  B05B5/03 ,  B05B5/08 ,  B05B7/162 ,  B05B13/041 ,  Y10T428/263

Abstract: WORK IS ELECTROSTATICALLY COATED WITH HIGHLY CONDUCTIVE MATERIAL BY HYDROSTACIS ATOMIZING SPRAY GUNS. THE RATE OF MATERIAL APPLICATION TO WORK FOR WATER BASE MATERIAL SUCH AS PORCELAIN ENAMEL IS HIGH BEING IN EXCESS OF THREE MILS OF FILM THICKNESS IN LESS THAN SIXTY SECONDS TO PREVENT "DRY SPRAY." THE PROBLEM OF "DRY SPRAY" IS FURTHER CONTROLLED BY PLACING THE SPRAY GUNS VERY CLOSE TO THE WORK (LESS THAN TWELVE INCHES).

公开(公告)号：US3620190A

公开(公告)日：1971-11-16

申请号：US3620190D

申请日：1969-05-22

Applicant: LICENTIA GMBH

Inventor： RENNER OTTO

IPC: B05B5/08 ,  B05B5/02

CPC classification number: B05B5/08

Abstract: An apparatus for electrostatically spraying powdery material. A conveyor extends into a vessel which contains a supply of the material to be sprayed, this conveyor moving the material from the vessel to a point near a spraying zone. Means are provided for moving the material from this point into the spraying zone.

公开(公告)号：US3605693A

公开(公告)日：1971-09-20

申请号：US3605693D

申请日：1969-09-09

Applicant: PITNEY BOWES INC

Inventor： ZWEIG GILBERT

IPC: G03G15/10 ,  B05B5/02 ,  G03G13/10

CPC classification number: G03G15/108

Abstract: A POROUS, ELECTRICALLY FLOATING ELECTRODE, SUCH A METAL SCREEN, IS EMPLOYED IN A LIQUID TONER PROCESS FOR ELECTROSTATIC IMAGE DEVELOPMENT.

公开(公告)号：US3604980A

公开(公告)日：1971-09-14

申请号：US3604980D

申请日：1970-05-25

Applicant: MEAD CORP

Inventor： ROBERTSON JOHN A

IPC: B41J2/085 ,  G01D15/18 ,  B05B5/00 ,  B05B5/02

CPC classification number: B41J2/085

Abstract: In a noncontacting coating system in which drops of coating material are selectively charged to divert them from their normal trajectory and thereby permit a patterned coating layer to be applied to a workpiece, the drop charging element is formed as a support plate having a planar surface parallel to the initial path of the coating drops and provided with strips of conductive material connected to appropriate leads for selectively charging the drops as they pass the conductive strips. A shield bar is positioned adjacent the support plate and notches are formed in the bar opposite the conductive strips. The shield bar may be formed of a conductive material, or coated with a conductive material at least in the area of the notches, and a selectively variable potential applied thereto to adjust the trajectory of all drops simultaneously.

公开(公告)号：US3599038A

公开(公告)日：1971-08-10

申请号：US3599038D

申请日：1969-07-28

Applicant: HIPOTRONICS

Inventor： SKIDMORE DONALD D

IPC: B05B5/035 ,  B05B5/053 ,  B05B5/02

CPC classification number: B05B5/053 ,  B05B5/035

Abstract: Apparatus and systems for high-voltage electrostatic charging of particles are disclosed which are compact and lightweight so as to be truly portable. High-voltage electrostatic particle charging tools are disclosed for performing the useful function of propelling charged particles toward a desired object incorporating a high-voltage supply as part of the handling tool, the illustrative high-voltage supplies being voltage multiplier rectifier networks. The voltage multiplier sections are stacked within the barrel structure of the handling tool to provide progressively higher voltages toward the muzzle end thus minimizing electrical leakage and reducing hazard. A pair of parallel-spaced stacks of capacitors with diode rectifiers selectively interconnected between the respective capacitors of the stacks are encapsulated within solid insulating material to form a rigid barrel structure. A portable setup transformer is positioned emote from the tool the transformer being adapted to be worn by the user, as by mounting on his belt, and the tool being connected to the secondary winding of the transformer by a flexible insulated electrical cable. Air-atomizing as well as hydraulic-atomizing systems may be employed with the invention.

公开(公告)号：US3596635A

公开(公告)日：1971-08-03

申请号：US3596635D

申请日：1967-03-16

Applicant: BELL & HOWELL CO

Inventor： SMITZER LOUIS A

IPC: G03G15/10 ,  G03G15/28 ,  B05B5/02 ,  B05C3/02

CPC classification number: G03G15/101 ,  G03G15/28

Abstract: Apparatus for electrostatographically copying, particularly with the use of copy sheets coated with a photoconductor wherein the photoconductive surface is charged, exposed to form a latent electrostatic image and developed. In the development zone, a copious supply of developer liquid is engaged against the imagebearing surface in close adjacency to an electrode surface. This is accomplished by applying liquid to the peripheral surface of an electrode in the form of a roller, or by the use of an electrode taking the form of a wick having capillary passages formed therein, or by a stationary electrode member having an action surface intersected by plural capillary passages. Liquid developer material is thus applied to only the image-bearing surface to render the latent image visible and utilitarian.

公开(公告)号：US3589607A

公开(公告)日：1971-06-29

申请号：US3589607D

申请日：1969-05-28

Applicant: GOURDINE SYSTEMS INC

Inventor： WOLF HERBERT S ,  WHRITENOUR GEORGE PETINO JR DO

IPC: B05B5/03 ,  B05B7/06 ,  B05B5/02

CPC classification number: B05B5/03 ,  B05B7/065

Abstract: An electrostatic spray gun in which coating or other material is metered through an orifice adjustable in size to accommodate materials of various viscosities and consistencies and is thereafter atomized upon being injected as a conical fluid sheet into a central stream of high velocity air. Adjustment of the orifice and thus of the flow rate of the material is accomplished by rotating the spray head relative to the gun body. Further atomization of the material and development of the spray are produced by fluid streams exiting through an annular opening and other fluid orifices spaced around the spray outlet opening. The atomized particles are charged electrically by a rearwardly directed corona discharge established between a corona electrode supported on the spray head and an attractor ring positioned on the spray head in surrounding relation to the spray outlet opening.

公开(公告)号：US3587967A

公开(公告)日：1971-06-28

申请号：US3587967D

申请日：1970-01-08

Applicant: RANSBURG ELECTRO COATING CORP

Inventor： BADGER DAVID H

IPC: B05B5/03 ,  B05B7/06 ,  B05B5/02

CPC classification number: B05B5/03 ,  B05B7/065

Abstract: AN ELECTROSTATIC SPRAY GUN FOR FORMING A SPARY OF AIRATOMIZED, ELECTRICALLY CHARGED PAINT PARTICLES COMPRISES A GROUNDED METAL BARREL HAVING AT ITS FORWARD END A PASSAGE WITHIN WHICH THE SPRAY IS FORMED. PAINT IS SUPPLIED TO SUCH PASSAGE THROUGH A NARROW ANNULAR PAINT ORIFICE IN THE PASSAGE WALL AND IS ATOMIZED BY AN AIRSTREAM DIRECTED INWARDLY AND FORWARDLY OF THE PASSAGE FROM AN ANNULAR AIR ORIFICE LOCATED IMMEDIATELY REARWARD OF THE PAINT ORIFICE. AN IONIZING ELECTRODE SUPPORTED IN REAR OF THE PAINT AND AIR ORIFICES EXTENDS FORWARDLY ON THE AXIS OF THE PASSAGE PAST THE PAINT ORIFICE AND TERMINATES AT A POINT SPACED REARWARDLY FROM THE FORWARD END OF THE PASSAGE. AN APPROPRIATE VOLTAGE SOURCE MAINTAINS THE ELECTRODE AT ELEVATED POTENTIAL TO CREATE BETWEEN THE ELECTRODE AND THE WALL OF THE PASSAGE AN ELECTROSTATIC FIELD THROUGH WHICH THE SPRAY PASSES IMMEDIATELY AFTER IT IS FORMED.

公开(公告)号：US3585060A

公开(公告)日：1971-06-15

申请号：US3585060D

申请日：1969-01-24

Applicant: GOURDINE SYSTEMS INC

Inventor： GOURDINE MEREDITH C ,  MORTON GUY R

IPC: B05B5/03 ,  B05B5/02

CPC classification number: B05B5/032

Abstract: MEANS AND METHODS ARE DISCLOSED FOR EXTRACTING CHARGED PARTICLES FROM A HIGH VELOCITY AIR STREAM SO AS TO UNIFORMLY COAT A SUBSTRATE. THE PARTICLES ARE ENTRAINED IN A MOVING GASEOUS MEDIUM, CHARGED BY AN IONIZING ELECTRIC FIELD, DIRECTED AT A BEND ZONE INTO A NON-TURBULENT FLUID REGION, AND DRIVEN BY A REPELLING ELECTRIC FIELD TO A DEPOSITION SURFACE.

公开(公告)号：US3583364A

公开(公告)日：1971-06-08

申请号：US3583364D

申请日：1968-09-11

Applicant: XEROX CORP

Inventor： BUDDENDECK GERALD A ,  KELSCH ROBERT J

IPC: G03G15/09 ,  B05B5/02

CPC classification number: G03G15/09

Abstract: Apparatus for producing facsimile copies having high resolution and uniformity from electrostatically charged latent images on a dielectric support member in which a quantity of developer material comprising a uniformly dispersed toner material is transported into transfer relation with the dielectric support member having the latent electrostatic images thereon. The developer material which includes a magnetically attractable carrier material is supported on the applicator member by means of an attractive force generated by a suitable magnetic field. The toner is maintained at a uniformly dispersed concentration in the developer material by means of concentrically arranged screw conveyor members which provide a continuously recirculated supply of developer material in position to be attracted to the cylindrical applicator member.