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    Electrostatic spraying methods and apparatus
    61.
    发明授权
    Electrostatic spraying methods and apparatus 失效
    静电喷涂方法和装置

    公开(公告)号：US3635401A

    公开(公告)日：1972-01-18

    申请号：US3635401D

    申请日：1969-10-27

    Applicant: GOURDINE COATING SYSTEMS INC

    Inventor： BROMLEY LEO L ,  WILLIAMS JAMES B

    IPC: B05B5/03 ,  B05B7/06 ,  B05B7/08 ,  B05B5/00

    CPC classification number: B05B7/08 ,  B05B5/03 ,  B05B7/066 ,  B05B7/0815

    Abstract: Apparatus and methods for electrostatically coating a workpiece in which a spray of atomized coating material particles is charged electrically and thereafter confined within a surrounding shroud of moving air to control dispersal of the charged particles and to increase the charge potential carried by the particles. The shroud of air issues from the spray apparatus as a multiplicity of separate airstreams that extend toward the workpiece to be coated a distance sufficient to confine the charge particles against electrostatic attraction to objects other than the workpiece. Electrostatic charges are imparted to the coating material particles by a rearwardly directed corona discharge established between a corona electrode positioned in the spray path and the spray head. An air-operated switch energizes the corona electrode upon the flow of air to the spray head, thus preventing sparking between the corona electrode and the spray head by ensuring that the corona electrode is immersed in an airflow prior to being energized.

    Abstract translation: 用于静电涂覆工件的装置和方法，其中雾化的涂层材料颗粒的喷雾电化并随后被限制在移动空气的周围的护罩内，以控制带电粒子的分散并且增加颗粒携带的电荷势。 空气罩从喷雾装置发出作为多个单独的气流，其向工件延伸以被涂覆一定距离，足以限制充电颗粒抵抗除工件以外的物体的静电吸引。 通过在位于喷雾路径中的电晕电极和喷头之间建立的向后指向的电晕放电，向涂层材料颗粒施加静电荷。 气动开关在空气流到喷头时使电晕电极通电，从而通过确保电晕电极在通电之前被浸入气流中来防止电晕电极和喷头之间的火花。

    Paint spraying method and apparatus
    62.
    发明授权
    Paint spraying method and apparatus 失效
    涂料喷涂方法和装置

    公开(公告)号：US3635400A

    公开(公告)日：1972-01-18

    申请号：US3635400D

    申请日：1970-03-27

    Applicant: NORDSON CORP

    Inventor： NORD ERIC T ,  ROSEN SAMUEL R ,  SCARBROUGH DON R ,  VILAGL BURTON J ,  RUNSTADLER PETER W JR

    IPC: B05B5/03 ,  B05B5/035 ,  B05B7/08 ,  B05B5/00 ,  F23D11/28

    CPC classification number: B05B5/035 ,  B05B5/03 ,  B05B7/0815

    Abstract: A method and apparatus for spraying paint and similar coatings. In one form the paint is sprayed at low pressure from a flat fan nozzle. A flat fan of air impinges upon the fan of paint at an angle of from 30*-70*. The air atomizes the paint to form a soft spray with low-forward velocity. In another form of the method, two fans of paint are projected toward one another at an angle and an air fan is directed along the bisector toward the zone of intersection. The air fan atomizes both streams of paint. An electrode can be placed in the air stream to ionize the air stream which in turn charges the paint particles. The width of the paint spray pattern is varied by varying the included angle of the air fan. A spray gun is disclosed having two tubular paint nozzles for projecting two fan-shaped fans of paint. An air nozzle is mounted between the paint nozzles for projecting a fan of air against the paint fans to atomize the paint. The air nozzle is adjustable to provide air fans of different angles for varying the width of the paint spray pattern. An electrode is disposed in the air nozzle for ionizing the air stream. This electrode is energized through a resistor and flexible cable. The cable is spring-urged toward the resistor so that when the resistor is removed, the cable shifts causing a safety switch to open deenergizing the gun. When a nozzle mounting member is removed, the cable and surrounding tube are shifted forwardly to automatically close a valve to seal off the air and electrical conduits. Removable caps are provided on the ends of the tubular paint nozzles for facilitating cleaning of the nozzles.

    Abstract translation: 一种用于喷涂油漆和类似涂层的方法和装置。 在一种形式中，油漆在低压下从平坦的风扇喷嘴喷射。 平面风扇以30°-70°的角度撞击在油漆风扇上。 空气雾化油漆以形成具有低向前速度的软喷雾。 在该方法的另一种形式中，两个油漆风扇以一定角度彼此相对地突出，并且风扇沿平分线朝向相交区域引导。 风扇使两股油漆雾化。 电极可以放置在空气流中以离子化气流，其又对涂料颗粒进行充电。 通过改变风扇的夹角来改变喷漆图案的宽度。

    Electrostatic air-liquid atomizing nozzle for paints and the like
    63.
    发明授权
    Electrostatic air-liquid atomizing nozzle for paints and the like 失效
    静电空气喷雾喷嘴和类似的喷嘴

    公开(公告)号：US3561677A

    公开(公告)日：1971-02-09

    申请号：US3561677D

    申请日：1967-07-07

    Applicant: GYROMAT CORP

    Inventor： NORRIS EDWARD O ,  WAKE HEREWARD

    IPC: B05B5/03 ,  B05B7/06 ,  E01B5/00

    CPC classification number: B05B5/03 ,  B05B7/067

    Abstract: The invention is directed to air-liquid atomizing nozzles, particularly for electrostatic paint spray systems. The nozzle of the invention is characterized by having an annular liquid discharge opening closely surrounded by an annular air discharge opening. The arrangement of the air discharge opening is such that the air, while being discharged in a generally cylindrical flow, is caused and permitted immediately to contract in diameter in front of the nozzle, and thereafter to gradually expand in diameter to form a desired paint spray pattern.

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