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    Measuring arrangement for an apparatus for electrostatic coating of grounded objects for measuring the ground resistence
    71.
    发明授权
    Measuring arrangement for an apparatus for electrostatic coating of grounded objects for measuring the ground resistence 失效
    用于测量接地电阻的接地物体的静电涂层装置的测量装置

    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。

    Point apparatus for testing electrical contact between metallic objects
    72.
    再颁专利
    Point apparatus for testing electrical contact between metallic objects 失效

    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.

    Electrostatic coating apparatus
    73.
    发明授权
    Electrostatic coating apparatus 失效
    静电涂装置

    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。

    Safety circuit for electrostatic spray gun
    74.
    发明授权
    Safety circuit for electrostatic spray gun 失效
    静电喷枪安全电路

    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。

    Device for the electrostatic application of protective coatings with synthetic powders by the use of spray guns
    75.
    发明授权
    Device for the electrostatic application of protective coatings with synthetic powders by the use of spray guns 失效
    使用喷雾器静电应用保护性涂料与合成粉末的装置

    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.

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