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1. 发明授权

US5811757A Power source including parallel switching circuits and related methods for a welding or cutting system 失效
标题翻译：电源包括用于焊接或切割系统的并行开关电路和相关方法
公开(公告)号：US5811757A
公开(公告)日：1998-09-22
申请号：US608748
申请日：1996-02-29
申请人： Philip K. Higgins
发明人： Philip K. Higgins
IPC分类号： B23K10/00 , H05H1/36 , B23K9/10
CPC分类号： B23K10/006 , H05H1/36
摘要： A power source for a plasma cutting tool includes first and second power switching circuits and a controller. Each power switching circuit includes a switch for switching electrical power to a respective output, and the outputs of the power switching circuits are connected in parallel. The controller controls the switches in response to a desired output for the power source. The controller also includes a synchronizer for synchronizing the first and second switches so that both of the switches switch electrical power at a common duty cycle. The synchronizer can also maintain a 180 degree phase relationship between switching of the first and second switches. Related methods are also discussed.
摘要翻译：等离子切割工具的电源包括第一和第二功率开关电路和控制器。每个电源开关电路包括用于将电力切换到相应的输出的开关，并且功率开关电路的输出并联连接。控制器响应于电源的期望输出来控制开关。控制器还包括同步器，用于使第一和第二开关同步，使得两个开关以公共占空比切换电力。同步器还可以在第一和第二开关的切换之间保持180度的相位关系。还讨论了相关方法。

2. 发明授权

US07605341B2 Metering system and method for supplying gas to a torch 失效
标题翻译：用于向割炬供气的计量系统和方法
公开(公告)号：US07605341B2
公开(公告)日：2009-10-20
申请号：US11423237
申请日：2006-06-09
申请人： Philip K. Higgins , Wayne Stanley Severance, Jr.
发明人： Philip K. Higgins , Wayne Stanley Severance, Jr.
IPC分类号： B23K10/00
CPC分类号： B23K10/00 , B23K9/16
摘要： A metering system and associated method for supplying gas to a torch are provided. The metering system includes a controller that is configured to adjust a pressure regulator according to the pressure and flow rate of the gas delivered to the torch. For example, the torch can be a plasma arc torch that has an electrode positioned in a nozzle and operates in a working mode by providing an arc from the electrode to a workpiece. In a first mode of operation, the metering system can provide a gas to the torch by adjusting the pressure regulator according to the pressure downstream of the pressure regulator. In a second mode of operation, the metering system can provide adjust the pressure regulator according to the flow rate of the gas through a flow transducer in series with the pressure regulator. Further, the metering system can be configured to monitor the downstream pressure and the flow rate of the gas and determine therefrom whether there exists in the torch a double arc or other operating condition that affects the flow of the gas through the nozzle.
摘要翻译：提供了一种用于向割炬提供气体的计量系统和相关方法。计量系统包括控制器，该控制器被配置为根据输送到割炬的气体的压力和流速来调节压力调节器。例如，手电筒可以是等离子弧焊炬，其具有位于喷嘴中的电极并且通过从电极向工件提供电弧而在工作模式下操作。在第一操作模式中，计量系统可以通过根据压力调节器下游的压力调节压力调节器来向喷枪提供气体。在第二种操作模式中，计量系统可以根据通过与压力调节器串联的流量传感器的气体的流量来调节压力调节器。此外，计量系统可以被配置为监测气体的下游压力和流量，并由此确定喷枪中是否存在影响通过喷嘴的气体流动的双弧或其它操作状态。

3. 发明授权

US07115833B2 Metering system and method for supplying gas to a torch 有权
公开(公告)号：US07115833B2
公开(公告)日：2006-10-03
申请号：US10980374
申请日：2004-11-03
申请人： Philip K. Higgins , Wayne Stanley Severance, Jr.
发明人： Philip K. Higgins , Wayne Stanley Severance, Jr.
IPC分类号： B23K9/00
CPC分类号： B23K10/00 , B23K9/16
摘要： A metering system and associated method for supplying gas to a torch are provided. The metering system includes a controller that is configured to adjust a pressure regulator according to the pressure and flow rate of the gas delivered to the torch. For example, the torch can be a plasma arc torch that has an electrode positioned in a nozzle and operates in a working mode by providing an arc from the electrode to a workpiece. In a first mode of operation, the metering system can provide a gas to the torch by adjusting the pressure regulator according to the pressure downstream of the pressure regulator. In a second mode of operation, the metering system can provide adjust the pressure regulator according to the flow rate of the gas through a flow transducer in series with the pressure regulator. Further, the metering system can be configured to monitor the downstream pressure and the flow rate of the gas and determine therefrom whether there exists in the torch a double arc or other operating condition that affects the flow of the gas through the nozzle.

4. 发明授权

US5756963A Saturation sensing power source and related methods for a welding or cutting system 失效
标题翻译：饱和感应电源及焊接或切割系统的相关方法
公开(公告)号：US5756963A
公开(公告)日：1998-05-26
申请号：US608713
申请日：1996-02-29
申请人： Philip K. Higgins
发明人： Philip K. Higgins
IPC分类号： B23K9/10
CPC分类号： B23K9/1043
摘要： A power source for a welding or cutting system is provided which preferably includes a power switching circuit, a switching cessation detector, and overshoot reducing means. The power switching circuit switches electrical power to provide an electrical power output signal of the power source to an electric arc tool operatively coupled thereto. The switching cessation detector is responsive to the power switching circuit. The cessation detector generates a switching cessation signal responsive to detecting electrical power being supplied to an electric arc tool operatively coupled to the power source when the power switching circuit ceases switching. The overshoot reducing means is responsive to the switching cessation signal and reduces excess current output from the power switching circuit upon resumption of switching. Related methods are also discussed.
摘要翻译：提供了用于焊接或切割系统的电源，其优选地包括功率开关电路，切换停止检测器和过冲减少装置。功率开关电路切换电力以将电源的电力输出信号提供给可操作地耦合到其上的电弧工具。开关停止检测器响应于电源开关电路。当功率切换电路停止切换时，停止检测器响应于检测供应给可操作地耦合到电源的电弧工具的电力而产生切换停止信号。过冲减少装置响应于切换停止信号，并且在恢复切换时减少从功率开关电路输出的过剩电流。还讨论了相关方法。

5. 发明授权

US5290995A Plasma arc cutting system having fluid metering and power control systems 失效
标题翻译：等离子弧切割系统，具有流体计量和功率控制系统
公开(公告)号：US5290995A
公开(公告)日：1994-03-01
申请号：US811837
申请日：1991-12-20
申请人： Philip K. Higgins , Peter Budai , Wayne S. Severance, Jr.
发明人： Philip K. Higgins , Peter Budai , Wayne S. Severance, Jr.
IPC分类号： B23K10/00 , B23K9/00
CPC分类号： B23K10/006
摘要： A cutting and welding system is disclosed which includes a metering system for controlling at a location remote from the plasma arc torch the amount of gas and water fed to the plasma arc torch. The system includes at least one torch having an electrode, a nozzle assembly positioned adjacent the discharge end of the electrode, and structure for generating a flow of gas between the electrode and the nozzle assembly to create plasma flow through the bore to a workpiece. A gas line communicates with a source of gas and the plasma arc torch for supplying gas to the torch. A plurality of metering orifices are positioned within the gas flow line in a parallel bank with each other so that the gas may flow through each of the metering orifices. Each metering orifice has a predetermined diameter opening. A gas control valve is mounted adjacent each of the metering orifices within the gas flow line on the upstream side toward the supply of gas. Each gas control valve is operable between open and closed positions for allowing gas flow through a metering orifice upon actuation of the valve. Control means selectively actuates the gas control valves to control gas flow through selected metering orifices to allow a predetermined amount of gas to flow to the plasma arc torch. A method of controlling the cutting current generated to the torch also is disclosed.
摘要翻译：公开了一种切割和焊接系统，其包括用于在远离等离子弧的位置处控制供给到等离子弧焊炬的气体和水的量的计量系统。该系统包括至少一个具有电极的手电筒，邻近电极的放电端定位的喷嘴组件以及用于在电极和喷嘴组件之间产生气流以产生通过孔的等离子体流到工件的结构。气体管线与气体源连接，等离子弧焊枪用于向割炬提供气体。多个计量孔彼此平行地布置在气体流动管线内，使得气体可以流过每个计量孔。每个计量孔具有预定直径的开口。气体控制阀安装在上游侧的气体流动管线中的每个计量孔附近朝向气体供应。每个气体控制阀可在打开和关闭位置之间操作，以在气门致动时允许气体流过计量孔。控制装置选择性地致动气体控制阀以控制通过所选计量孔的气体流动，以允许预定量的气体流到等离子体电弧焰炬。公开了一种控制对割炬产生的切割电流的方法。

6. 发明授权

US4345139A Constant current SCR power supply method and system for a welding load 失效
标题翻译：恒流SCR供电方式及焊接负载系统
公开(公告)号：US4345139A
公开(公告)日：1982-08-17
申请号：US221507
申请日：1980-12-30
申请人： Philip K. Higgins
发明人： Philip K. Higgins
IPC分类号： B23K9/073 , B23K9/10
CPC分类号： B23K9/0732
摘要： A regulated constant current is supplied to a welding load by an SCR power supply having an SCR rectifier network interposed in series between the welding load and applied input power with the SCR power supply comprising means for generating a first feedback signal proportional to arc current which substantially coincides in time and phase with the arc current; means for generating a second feedback signal proportional to arc current which is substantially nonresponsive to the arc current fundamental ripple frequency, means for weighing the first and second feedback signals in a predetermined proportion to establish an error feedback control signal and means for applying trigger signals to the SCR rectifier network in timed synchronism with the input AC power line as a function of the error feedback control signal.
摘要翻译：通过具有SCR整流网络的SCR电源将稳定的恒定电流提供给焊接负载，该SCR电源串联插入在焊接负载和施加的输入电力之间，SCR电源包括用于产生与电弧电流成比例的第一反馈信号的装置，与电弧电流在时间和相位上重合; 用于产生与电弧电流基本不响应于电弧电流基波纹频率的电弧电流成比例的第二反馈信号的装置，用于以预定比例称量第一和第二反馈信号以建立误差反馈控制信号的装置，以及用于将触发信号施加到 SCR整流网络与输入交流电源线定时同步作为误差反馈控制信号的函数。

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