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1. 发明授权

US4803333A Viewing optics for external-mount electron beam welders 失效
标题翻译：观察外置电子束焊机的光学元件
公开(公告)号：US4803333A
公开(公告)日：1989-02-07
申请号：US178363
申请日：1988-04-06
申请人： Glen S. Lawrence , Timothy J. Haynie , Joseph D. Ferrario , Stefan P. Kyselica
发明人： Glen S. Lawrence , Timothy J. Haynie , Joseph D. Ferrario , Stefan P. Kyselica
IPC分类号： B23K15/00 , G02B5/04 , G02B26/08 , H01J37/30
CPC分类号： B23K15/0013 , H01J37/3005
摘要： An optical system for use in an electron beam welding machine for viewing workpieces mounted within a vacuum chamber from a position outside the chamber, either before or during the welding operation. The optical system includes an automatic motorized means for adjusting the focus of the system to accommodate different electron beam gun to work distances, and simultaneously to automatically adjust the angle with respect to the axis of the electron beam along which the view of the area being welded is to be observed. A transparent disc, which may be rotated step by step about its central axis in approximately 30.degree. increments is mounted so that a portion of its surface near its periphery is interposed in the viewing path so as to shield the optical parts of the viewing system from the vapors and radiations which are generated during the electron beam welding process. A means for illuminating only the area on the work surface which is to be viewed is also provided with a similar shielding means.
摘要翻译：一种用于电子束焊接机器的光学系统，用于在焊接操作之前或焊接操作期间，从室外的位置观察安装在真空室内的工件。该光学系统包括一个自动电动装置，用于调节系统的焦点以适应不同电子束枪的工作距离，并同时自动调节相对于电子束的轴线的角度，沿着该轴线的焊接区域的视图要观察。可以以大约30度的增量围绕其中心轴逐步旋转的透明盘被安装成使得其表面附近的其周边的一部分插入在观察路径中，以便将观察系统的光学部件从在电子束焊接过程中产生的蒸汽和辐射。仅用于照亮待观察的工作表面上的区域的装置也设置有类似的屏蔽装置。

2. 发明授权

US5464958A Arc welding apparatus with variable polarity reversing device and control 失效
标题翻译：具有可变极性反转装置和控制的电弧焊接装置
公开(公告)号：US5464958A
公开(公告)日：1995-11-07
申请号：US223193
申请日：1994-04-05
申请人： Gilbert E. Flowers , Joel H. Cohen , Earl L. Kelly, Jr. , Levi Williams , Gray W. Grubbs , Stefan P. Kyselica
发明人： Gilbert E. Flowers , Joel H. Cohen , Earl L. Kelly, Jr. , Levi Williams , Gray W. Grubbs , Stefan P. Kyselica
IPC分类号： B23K10/00
CPC分类号： B23K10/006
摘要： A variable polarity device reverses the polarity of an electrically conductive workpiece and an electrode, having opposite polarities, between positive and negative in a low D.C. range of about 0.5-45 amps. Combined with the device is a control means which schedules a frequency of time rate of the reversing in the low time frequency of about 1-1000 cycles per second as well as the electric current at each polarity to provide a series of time and current defined polarity cycles for D.C. arc welding apparatus.
摘要翻译：可变极性器件在约0.5-45安培的低直流范围内反转具有相反极性的导电工件和电极的正极和负极之间的极性。与装置相结合的是一种控制装置，其在大约1-1000个周期/秒的低时间频率以及每个极性的电流中调度反转的时间频率的频率，以提供一系列时间和电流限定的极性直流电弧焊接设备的循环。

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