公开(公告)号：US4266262A

公开(公告)日：1981-05-05

申请号：US53372

申请日：1979-06-29

Applicant: Martin O. Haase, Jr.

Inventor： Martin O. Haase, Jr.

IPC: B05B5/10 ,  H02M7/10 ,  H03K3/57 ,  B05B5/02

CPC classification number: H03K3/57 ,  B05B5/10 ,  H02M7/10

Abstract: A power supply for generating a high unidirectional voltage at a charging electrode of an electrostatic spray coating apparatus has circuitry for sensing the magnitude of current flow to the electrode and for controlling application of an input voltage to the power supply in accordance therewith to control the magnitude of the high voltage. The arrangement is such that whenever the current flow is less than a predetermined value all cycles of the input voltage are applied to the power supply, but whenever the current exceeds the predetermined value only a limited number of the cycles are applied to the power supply. In this manner, the danger of arcing between the electrode and an article being coated is eliminated or at least significantly reduced.

Abstract translation: 用于在静电喷涂装置的充电电极处产生高单向电压的电源具有用于感测到电极的电流的大小的电路，并且用于根据控制幅度来控制对电源的输入电压的施加 的高电压。 该布置使得每当电流小于预定值时，输入电压的所有周期都被施加到电源，但是每当电流超过预定值时，只有有限数量的周期被施加到电源。 以这种方式，电极和被涂覆的制品之间的电弧的危险被消除或至少显着减少。

公开(公告)号：US4027050A

公开(公告)日：1977-05-31

申请号：US594852

申请日：1975-07-10

Applicant: Frederic David Haig

Inventor： Frederic David Haig

IPC: B05B5/03 ,  B05B5/10 ,  B05B5/02 ,  B05D1/06

CPC classification number: B05B5/032 ,  B05B5/10 ,  Y10S148/122

Abstract: A method of coating an article comprising passing a coating material adjacent to a plurality of conductors connected to a high voltage source whereby to electrostatically charge the material and wherein each of the conductors is connected to said source through an impedance adapted to resist reduction of charge on a conductor relatively remote from an articles to be coated in consequence of reduction of charge on a conductor relatively adjacent to said article to be coated. The coating material may be supplied from a powder dispensing and metering device comprising a powder reservoir, a rotor mounted for rotation at the base of the reservoir and an air inlet adjacent the rotor through which air is drawn in use to mix with powder during rotation of the rotor to draw a powder-air mixture away from the reservoir.

Abstract translation: 一种涂覆物品的方法，包括使与涂覆材料相邻的涂层材料连接到连接到高压源的多个导体，从而对材料进行静电充电，并且其中每个导体通过适于阻止电荷降低的阻抗连接到所述源 相对远离待涂覆物品的导体，由于在与所述待涂覆的物品相对相邻的导体上的电荷减少而导致的电荷减少。 涂料可以由粉末分配和计量装置供应，粉末分配和计量装置包括粉末储存器，安装在储存器底部的转子的转子和与转子相邻的空气入口，空气在使用中通过该空气抽吸与粉末在旋转期间混合 转子将粉末 - 空气混合物从储存器中抽出。

公开(公告)号：US4020393A

公开(公告)日：1977-04-26

申请号：US596465

申请日：1975-07-16

Applicant: Donald H. Porter

Inventor： Donald H. Porter

IPC: B05B5/025 ,  B05B5/10 ,  B05B5/00

CPC classification number: B05B5/10

Abstract: Apparatus for applying powdered coating materials includes a channel portion wherein the powder coating material is passed around a conduit which delivers an air jet to the powder material, and where the powder material is ionized, and then forced through an outlet channel. The latter is made of nonconductive material, and includes a non-conductive insert disposed in the channel, with the dielectric constant of the insert being different from the dielectric constant of the material of the remainder of the channel. The ionized powder is directed by gas pressure through the channel toward a grounded object to be coated. The ionization electrode within the apparatus is hollow and an air jet is passed therethrough to aid in the dispersion of the powdered coated material.

Abstract translation: 用于施加粉末涂料的设备包括通道部分，其中粉末涂料材料绕着将空气射流输送到粉末材料的管道，并且其中粉末材料被电离，然后被迫通过出口通道。 后者由非导电材料制成，并且包括设置在通道中的非导电插入件，插入件的介电常数不同于沟道的其余部分的材料的介电常数。 电离粉末通过气体通过通道朝向待涂覆的接地物体引导。 设备内的电离电极是中空的，并且空气射流通过其中以有助于粉末涂覆材料的分散。

公开(公告)号：US4011991A

公开(公告)日：1977-03-15

申请号：US599994

申请日：1975-07-29

Applicant: Senichi Masuda

Inventor： Senichi Masuda

IPC: B05B5/025 ,  B05B5/00 ,  B05B5/03 ,  B05B5/053 ,  B05B5/08 ,  B05B5/10 ,  B05B5/16 ,  B05B7/14 ,  B05B5/02 ,  B05C5/00

CPC classification number: B05B7/145 ,  B05B5/007 ,  B05B5/032 ,  B05B5/0535 ,  B05B5/08 ,  B05B5/10 ,  B05B5/1683 ,  B05B7/1477

Abstract: An improved electrostatic powder painting apparatus is described herein, in which in the vicinity of a discharge electrode disposed in opposition to a body to be painted there is separately provided a driving electrode, for establishment of a driving electric field. The generation of a mono-polar ion current is achieved by said discharge electrode, so that the driving electric field and the ion current density may be controlled quite independently of each other, whereby generation of inverse ionization can be prevented perfectly, while a maximum amount of electric charge can be given to paint powders and a maximum driving force is acted upon said paint powders.

Abstract translation: 这里描述了一种改进的静电粉末喷涂装置，其中在与待涂漆的主体相对设置的放电电极附近，分开设置用于建立驱动电场的驱动电极。 通过所述放电电极实现单极离子电流的产生，从而可以相当独立地控制驱动电场和离子电流密度，从而可以完美地防止逆电离的产生，同时最大量 可以赋予涂料粉末，并且对所述涂料粉末施加最大的驱动力。

公开(公告)号：US3991710A

公开(公告)日：1976-11-16

申请号：US366121

申请日：1973-06-01

Applicant: Meredith C. Gourdine ,  Stephen Diamond ,  Donald Porter

Inventor： Meredith C. Gourdine ,  Stephen Diamond ,  Donald Porter

IPC: B05B5/03 ,  B05B5/08 ,  B05B5/10 ,  B05B5/16 ,  B05B7/14 ,  B05B15/04 ,  B05B5/02

CPC classification number: B05B7/1477 ,  B05B15/0412 ,  B05B5/032 ,  B05B5/082 ,  B05B5/10 ,  B05B5/1683 ,  Y02P70/36

Abstract: A coating system for efficient electrical precipitation of powder to articles. Articles are conveyed through a coating chamber where they are coated with a powder. Electrogasdynamic guns direct a cloud of charged particles into the coating chamber. Dilution air moves the cloud through the chamber with the articles. As the cloud moves with the articles, the charged particles precipitate to the articles. An exhaust section draws off the dilution air as the coated articles leave the chamber. Electrically conductive articles may be grounded through the conveyor system to provide a discharge path from the charged particles. For nonconducting or hard to ground articles, a precharge section places on the articles an initial charge of opposite polarity from the charged particles. A powder feed using a cylinder and piston arrangement to contain fluidized powder supplies a uniform powder suspension to the guns.

公开(公告)号：US3970920A

公开(公告)日：1976-07-20

申请号：US561413

申请日：1975-03-24

Applicant: Franz Braun

Inventor： Franz Braun

IPC: B05B5/08 ,  B05B5/10 ,  G01R27/20 ,  G01R5/28 ,  G01N27/00

CPC classification number: B05B5/10 ,  B05B5/087 ,  G01R27/20

Abstract: A measuring arrangement for an apparatus for electrostatic coating of grounded objects for measuring the ground or earthing resistance thereof, and wherein the objects are moved past the apparatus. An electrode is arranged in front of the apparatus, viewed in the object conveying direction, and this electrode is intended to influence the electrical potential of the object without contacting the same. There is also provided a measuring circuit which is electrically coupled with such electrode or with an electrostatic or induction electrode also arranged in front of the apparatus.

Abstract translation: 用于静电涂覆用于测量其接地或接地电阻的接地物体的设备的测量装置，并且其中物体移动通过设备。 从物体传送方向观察，电极位于设备的前方，该电极旨在影响物体的电位而不与其接触。 还提供了一种与这种电极电耦合的测量电路，或者还设置在设备前面的静电或感应电极。

公开(公告)号：USRE28394E

公开(公告)日：1975-04-15

申请号：US37866973

申请日：1973-07-12

IPC: B05B5/053 ,  B05B5/08 ,  B05B5/10

CPC classification number: B05B5/10 ,  B05B5/0533 ,  B05B5/087

Abstract: 1. A DEVICE FOR TESTING THE ELECTRICAL CONTACT BETWEEN A METALLIC OBJECT AND A GROUNDED SUPPORT ON WHICH SAID OBJECT IS TO BE SUBJECTED TO AN ELECTROSTATIC COATING PROCESS, SAID DEVICE COMPRISING MEANS FOR IMPARTING AN ELECTRICAL CHARGE TO SAID OBJECT (AND MEANS FOR INDICATING WHETHER SAID CHARGE IS CONDUCTED AWAY FROM SAID OBJECT THROUGH SAID GROUNDED SUPPORT OR A SUFFICIENT CHARGE ACCUMULATES ON SAID OBJECT TO GENERATE A SPARK BETWEEN SAID OBJECT AND SUPPORT) JUST BEFORE IT IS TO BE SUBJECTED TO SAID COATING PROCESS, AND A SPARK DETECTOR POSITIONED TO DETECT ANY SPARK RESULTING FROM THE IMPARTING OF SAID ELECTRICAL CHARGE.

公开(公告)号：US3851618A

公开(公告)日：1974-12-03

申请号：US43326574

申请日：1974-01-14

Applicant: RANSBURG CORP

Inventor： BENTLEY S

IPC: H01T15/00 ,  B05B5/025 ,  B05B5/10 ,  B05D1/04 ,  H02H3/44 ,  H02H7/00 ,  B05B5/02

CPC classification number: H02H7/003 ,  B05B5/10 ,  H02H3/445

Abstract: A method and apparatus employs the currents of a high voltage electrostatic system to determine incipient grounded conditions. The electric current in the ground return to its high voltage electrostatic system is sensed to provide a signal. All alternating current components of the signal above substantially pure direct current are attenuated to provide a resulting DC signal that increases as a grounded article approaches a charged electrode. In one embodiment the resultant DC signal is sampled at a rate fast enough to acticipate the fastest expected approach of a grounded article to the charged electrode. Every other sample is retained so that it may be compared with the sample immediately following it. The samples are compared in a summing circuit which provides a signal corresponding to the change in conditions in the ground return circuit. A level is selected corresponding to incipient grounding of the charged high voltage electrode. If a difference of the successive samples exceeds this level, an alarm is actuated providing a useful output.

Abstract translation: 方法和装置采用高压静电系统的电流来确定初始接地条件。 感测返回到其高压静电系统的接地中的电流以提供信号。 信号以上基本上纯的直流电流的所有交流分量被衰减以提供随着接地制品接近带电电极而增加的最终DC信号。 在一个实施例中，所得到的DC信号以足够快的速度进行采样，以便将接地制品的最快预期接近度预期到带电电极。 保留每个其他样品，以便将其与跟随它的样品进行比较。 在提供与接地回路中的条件变化相对应的信号的求和电路中比较采样。 对应于充电高压电极的初始接地选择电平。 如果连续样品的差异超过该水平，则启动警报提供有用的输出。

公开(公告)号：US3809955A

公开(公告)日：1974-05-07

申请号：US34468573

申请日：1973-03-26

Applicant: GRACO INC

Inventor： PARSON R

IPC: B05B9/01 ,  B05B5/025 ,  B05B5/10 ,  B05D1/04 ,  G05B19/02 ,  H02H7/00 ,  H02H3/08 ,  H02H7/12

CPC classification number: H02H7/003 ,  B05B5/10

Abstract: An improved high voltage sensing and disabling circuit having a desensitizing feature to compensate for initial turn-on of an electrostatic spray gun is disclosed. The circuit provides a safeguard against excessive electrostatic spray gun ionizing currents, but automatically compensates for current surges caused by line charging during turn-on.

Abstract translation: 公开了一种改进的高压感测和禁用电路，其具有用于补偿静电喷枪的初始接通的脱敏特征。 该电路提供了防止过度静电喷枪电离电流的保护，但自动补偿导通期间线路充电引起的电流浪涌。

公开(公告)号：US3698636A

公开(公告)日：1972-10-17

申请号：US3698636D

申请日：1971-04-23

Applicant: GRACO INC

Inventor： SZASZ IMRE

IPC: B05B5/10 ,  B05B5/00

CPC classification number: B05B5/10

Abstract: A material coating system to apply charged materials to objects to be coated by electrostatic spray guns. The spray gun itself has a double cone-shaped deflecting member in its barrel and an adjustable collar on its barrel to change the spray pattern. An internal electrode in the material conveying tube charges the material and a wound wire ground connection attached to the gun prevents an accumulation of charge at the gun. A material storage bin with multiple venturis feeds material to the gun by suction via its conveying tube. In addition, a polarity reversing circuit allows the power source to apply different charges to sprayed materials.