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    • 74. 发明授权
    • Sheet metal working electrode and handpiece
    • US5541381A
    • 1996-07-30
    • US431711
    • 1995-04-28
    • Donald L. GalbraithRichard P. Tice
    • Donald L. GalbraithRichard P. Tice
    • B23K11/00B23K11/28B23K11/31
    • B23K11/28B23K11/002
    • A sheet metal working electrode handpiece is described for delivering electric current from a source of electrical energy to a selected location on a sheet metal workpiece. The electrode has an electrically insulated handle with an electrical conductor having a connector for electrical contact with a source of electrical energy. A control switch on the handle provides electrical connection to the source of electrical energy to control delivery of electrical energy to the conductor. A first electrode adapter is provided on the handle, oriented along a first axis. A second electrode adapter is also provided on the handle, oriented along a second axis substantially normal to the first axis. Any one of several sheet metal engageable electrodes may be removably mounted to at least one of the adapters. One such electrode is a dent pulling electrode which includes a shank, threaded at one end to be received in one of the adapters. The shank is formed of carbon steel and includes a flat reduced end for engagement with a workpiece. A torque surface is situated between the shank ends to facilitate securing the electrode to the handpiece or engagement with a tool used to twist the electrode on its axis. Other electrodes include a copper shank, spherical end heat shrinking electrode, a spot welding electrode, a nail head welding electrode, and a chrome strip clip welding electrode.
    • 76. 发明授权
    • Toroidal resistance welding transformer
    • 环形电阻焊变压器
    • US4024370A
    • 1977-05-17
    • US611437
    • 1975-09-08
    • David Sciaky
    • David Sciaky
    • H01F30/00B23K11/28H01F30/16B23K11/10H01F27/28
    • B23K11/28H01F30/16
    • A transformer for application in portable resistance welding machines assembled from toroidal sections of iron core, primary and secondary windings arranged concentrically one with another. The primary is constructed from copper plate modules so as to form a continuous single layer winding of toroidal form in which the separate modules are electron-beam welded one to another in order to form the continuous primary winding. A single turn secondary completely encloses the primary winding and iron core so as to form a compact cylindrical electrical transformer structure. A liquid electrical insulating material is sealed within narrow gaps between iron core, primary winding and secondary winding to allow good thermal transfer from these elements to a cooling medium and at the same time stabilize the relative position of these elements against the dynamic forces developed by the high currents passing through the secondary.
    • 一种应用于便携式电阻焊接机的变压器,由铁芯,初级和次级绕组的环形部分组装,与另一个同心布置。 主要由铜板模块构成,以便形成环形形式的连续单层绕组,其中分离的模块彼此电子束焊接以形成连续的初级绕组。 单匝二次完全包围初级绕组和铁芯,以形成紧凑的圆柱形电变压器结构。 液体电绝缘材料被密封在铁芯,初级绕组和次级绕组之间的窄间隙内,以允许从这些元件到冷却介质的良好的热传递,并且同时使这些元件相对于由 高电流通过次级。