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    • 2. 发明申请
    • Welding mask
    • 焊接面罩
    • US20050151888A1
    • 2005-07-14
    • US10919262
    • 2004-08-17
    • Enrico Loewenthal
    • Enrico Loewenthal
    • A61F9/06G02F1/13G02F1/1335
    • A61F9/067G02F1/13
    • A mask for protecting the eye-sight of an operator carrying out arc welding, having a viewing window covered by a liquid crystal screen which can be switched either to a substantially transparent condition or to a condition of high absorbency, in which the liquid crystal screen is so arranged that, when not activated it is in its highly absorbent state, switching to its substantially transparent condition when activated by an electrical circuit, and in which the electrical circuit for controlling the liquid crystal screen is arranged to remain totally inactive unless the operator controls it to switch the liquid crystal screen to its transparent condition in order to view the area being worked on without light being absorbed.
    • 一种用于保护进行电弧焊接的操作者的视线的掩模,具有由液晶屏幕覆盖的观察窗口,该观察窗口可以切换到基本上透明的状态或高度吸收的条件,其中液晶屏幕 被布置为当未被激活时处于其高吸收状态,当由电路激活时切换到其基本上透明的状态,并且其中用于控制液晶屏的电路被布置成保持完全不起作用,除非操作者 控制它将液晶屏切换到其透明状态,以便在没有光被吸收的情况下观察被加工的区域。
    • 3. 发明专利
    • Improvements in filling devices for pressurizer liquid containers
    • GB1079283A
    • 1967-08-16
    • GB4456164
    • 1964-11-02
    • ENRICO LOEWENTHAL
    • F16K1/30F17C5/02F17C13/04
    • 1,079,283. Charging liquefied gas containers. E. LOEWENTHAL. Nov. 2, 1964 [Jan. 28, 1964], No. 44561/64. Heading F4P. Charging of a liquefied gas, e.g. butane, container 1, 2 is effected by lifting an inlet valve 17, Fig. 5, from a sealing ring 16 by inserting the neck B of a filling cylinder into the lower end of an axial blind bore 20, thereby allowing passage of liquefied gas through radial bores 21 of the valve 17 and bores 14 in the valve housing 11 set in the container base 2; the housing 11 being connected by a tube 24 to a vent valve housing 3 set in the container top 1, and the inlet valve 17 carrying a spring-loaded rod 26 projecting into a bore 4 of the vent valve housing 3 and serving to unseat the vent valve 10 during charging, and the tube 24 housing a side orifice 25 at the maximum filling level which when reached results in mist issuing from vent 6 to indicate that filling is complete. The valve housing 11 is normally closed by a cap 22, Fig. 3, and the vent valve 10 may be unseated by a predetermined pressure rise in the gas space of the container.