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    Dual mode plasma arc torch
    5.
    发明授权
    Dual mode plasma arc torch 有权
    双模等离子弧焊炬

    公开(公告)号：US07202440B2

    公开(公告)日：2007-04-10

    申请号：US11183693

    申请日：2005-07-18

    申请人： Roger W. Hewett ,  Kevin D. Horner-Richardson ,  Joseph P. Jones ,  Shiyu Chen ,  Fred A. Rogers

    发明人： Roger W. Hewett ,  Kevin D. Horner-Richardson ,  Joseph P. Jones ,  Shiyu Chen ,  Fred A. Rogers

    IPC分类号： B23K10/00

    CPC分类号： B23K9/10 ,  H05H1/34 ,  H05H2001/3489

    摘要： A dual mode plasma arc torch is provided that preferably comprises a start cartridge disposed between an electrode and a tip. In one form, the start cartridge comprises an initiator that is in electrical contact with the electrode and that is resiliently biased into contact with the tip, such that when the plasma arc torch is in a contact start mode, the initiator is movable against the resilient bias to separate from the tip and establish a pilot arc between the initiator and the tip. Further, when the plasma arc torch is in a high frequency start mode, the start cartridge spaces the tip from the electrode such that a pilot arc is established between the electrode and the tip. In other forms, a contact start torch is provided that is operable under high frequency, and conversely, a high frequency start torch is provided that is operable under low voltage.

    摘要翻译： 提供了一种双模式等离子弧焊炬，其优选地包括设置在电极和尖端之间的启动盒。 在一种形式中，启动盒包括与电极电接触并且被弹性地偏置成与尖端接触的起动器，使得当等离子体电弧焊炬处于接触启动模式时，起动器可抵靠弹性 偏压从尖端分离并在引发器和尖端之间建立引导电弧。 此外，当等离子弧焊炬处于高频启动模式时，起动盒将电极的尖端与电极隔开，使得在电极和尖端之间建立引导电弧。 在其他形式中，提供可在高频下操作的接触启动手电筒，相反地，提供可在低电压下操作的高频启动手电筒。

    Tip gas distributor
    6.
    发明授权
    Tip gas distributor 有权

    公开(公告)号：US07145099B2

    公开(公告)日：2006-12-05

    申请号：US10802954

    申请日：2004-03-16

    申请人： Kevin D. Homer-Richardson ,  Joseph P. Jones ,  Roger W. Hewett ,  Shiyu Chen

    发明人： Kevin D. Homer-Richardson ,  Joseph P. Jones ,  Roger W. Hewett ,  Shiyu Chen

    IPC分类号： B23K10/00

    CPC分类号： H05H1/34 ,  H05H2001/3468 ,  H05H2001/3489

    摘要： A tip gas distributor is provided that preferably comprises a plurality of swirl holes and a plurality of secondary gas holes, wherein the swirl holes direct a plasma gas to generate a plasma stream, and the secondary gas holes direct a secondary gas to stabilize the plasma stream. Additionally, a tip gas distributor is provided that comprises swirl passages and secondary gas passages formed between the tip gas distributor and an adjacent component to generate and stabilize the plasma stream. Further, methods of generating and stabilizing the plasma stream are provided through the use of the swirl holes and passages, along with the secondary gas holes and passages.

    Contact start plasma arc torch and method of initiating a pilot arc
    7.
    发明授权
    Contact start plasma arc torch and method of initiating a pilot arc 有权
    触点启动等离子弧焊炬和启动导电弧的方法

    公开(公告)号：US06903301B2

    公开(公告)日：2005-06-07

    申请号：US10084009

    申请日：2002-02-26

    申请人： Joseph P. Jones ,  Kevin D. Horner-Richardson ,  Shiyu Chen ,  Roger W. Hewett

    发明人： Joseph P. Jones ,  Kevin D. Horner-Richardson ,  Shiyu Chen ,  Roger W. Hewett

    IPC分类号： F23D1/00 ,  B23K10/00 ,  H05H1/34

    CPC分类号： H05H1/34 ,  B23K10/006 ,  H05H2001/3426 ,  H05H2001/3468 ,  H05H2001/3489

    摘要： A contact start plasma arc torch is provided that comprises an electrode, a tip, and an initiator that is resiliently biased into contact with the tip, the initiator being movable against the resilient bias to separate from the tip and establish a pilot arc between the initiator and the tip. The initiator is disposed within a start cartridge, which preferably comprises a coil spring that biases the initiator into contact with the tip. The plasma arc torch further comprises a plurality of head vent holes to vent gas from within the start cartridge during operation of the torch. Additionally, the tip defines a plurality of swirl holes and secondary gas holes to generate and control a plasma stream that is subsequently blown from a central exit orifice in the tip.

    摘要翻译： 提供接触式起动等离子弧焊炬，其包括弹性偏压与尖端接触的电极，尖端和引发器，所述引发器可抵抗弹性偏压移动以与尖端分离并在引发器之间建立引导弧 和提示。 引发器设置在启动盒中，其优选地包括将启动器偏置成与尖端接触的螺旋弹簧。 等离子弧焊炬还包括多个头部通气孔，以在割炬的操作期间从起始盒内排出气体。 另外，尖端限定多个涡流孔和二次气体孔，以产生和控制随后从尖端中的中心出口孔吹出的等离子体流。