Recharging device for czochralski method
    1.
    发明授权
    Recharging device for czochralski method 失效
    用于切克劳斯基法的充电装置

    公开(公告)号:US5009864A

    公开(公告)日:1991-04-23

    申请号:US426293

    申请日:1989-10-25

    摘要: A recharging device suitable for use in a Czochralski-type monocrystal ingot pulling apparatus, includes a shaft (3) which is suspended from a pulling element (1), a ring slider (8) capable of sliding along the shaft, a stopper (20) for stopping the downward movement of the ring slider, a pair of hooks (9, 11, 13) pivotably connected to the shaft below the ring slider and capable of assuming hooking and unhooking positions, and a pair of rods (16) each having one end connected to the hooks such that when the ring slider slides upward relative to the shaft the pair of the rods cause the hooks to assume their unhooking position, and when the ring slider slides downward relative to the shaft the rods cause the hooks to assume their hooking position.

    Voltage-controlled variable-frequency pulse oscillator
    6.
    发明授权
    Voltage-controlled variable-frequency pulse oscillator 失效
    压控可变频脉冲振荡器

    公开(公告)号:US4644300A

    公开(公告)日:1987-02-17

    申请号:US685165

    申请日:1984-12-21

    摘要: The voltage-controlled variable-frequency pulse oscillator in accordance with the present invention comprises an integrating capacitor, a variable current source for generating charging current for said integrating capacitor in response to the controlling voltage, a fixed current source for discharging said capacitor, a switching circuit for controlling the discharge of said capacitor, a comparator for outputting a discrimination signal by comparing the voltage of the capacitor and a reference voltage, and a multivibrator for receiving the discrimination signal from the comparator and for outputting a pulse signal with a frequency corresponding to the controlling voltage from the variable current source. The multivibrator comprises an R-S flip-flop for receiving the discrimination signal output by the comparator at its set side OR-NOR gates, and receiving and inverting the output of the reset side gate which is delayed by a prescribed time to the reset side OR-NOR gate. The R-S flip-flop is constructed to permit the oscillation output with a prescribed frequency to be taken out from the reset side OR-NOR gates, and the oscillation output of the R-S flip-flop controls the drive of the switching circuit. Therefore, the multivibrator starts oscillation on its own with a prescribed width when the capacitor voltage grows very large at the time of turning the power supply on or at the time of generation of an excessively large current where the output of the comparator continues to stay at a constant value. Furthermore, the current value of the fixed current source is set at more than twice the maximum current value of the variable current source. Because of this, the large voltage of the capacitor decreases gradually with ups and downs, and the comparator inverts after a certain time, the multivibrator discontinues the self oscillation, and the ordinary operation of the device takes place.

    摘要翻译: 根据本发明的压控可变频脉冲振荡器包括积分电容器,用于响应于控制电压产生用于所述积分电容器的充电电流的可变电流源,用于放电所述电容器的固定电流源,开关 用于控制所述电容器的放电的电路,比较器,用于通过比较电容器的电压和参考电压来输出鉴别信号;以及多谐振荡器,用于从比较器接收鉴别信号,并输出具有对应于 来自可变电流源的控制电压。 该多谐振荡器包括一个RS触发器,用于接收比较器在其设定侧的或非或非门输出的识别信号,并将延迟了规定时间的复位侧门的输出接收和反相至复位端OR- NOR门 R-S触发器被构造成允许从复位侧或非或非门取出规定频率的振荡输出,并且R-S触发器的振荡输出控制开关电路的驱动。 因此,当在比较器的输出继续保持的电流过大或者过大电流产生时电容器电压增大非常大时,多谐振荡器自身开始以规定的宽度振荡 恒定值。 此外,固定电流源的电流值设定为可变电流源的最大电流值的两倍以上。 因此,电容器的大电压随着上升和下降而逐渐减小,并且比较器在一定时间后反转,多谐振荡器停止自振荡,并且发生器件的普通操作。

    Thermal spray powder and method for forming a thermal spray coating
    10.
    发明申请
    Thermal spray powder and method for forming a thermal spray coating 有权
    热喷涂粉末和形成热喷涂的方法

    公开(公告)号:US20070077363A1

    公开(公告)日:2007-04-05

    申请号:US11540234

    申请日:2006-09-29

    摘要: A thermal spray powder includes granulated and sintered yttria particles obtained by granulating and sintering a raw material powder in air or oxygen. The primary particles constituting the granulated and sintered yttria particles have an average particle size between 0.5 and 1.5 μm inclusive, and 1.11 times or more as large as the raw material powder. Alternatively, the primary particles have an average particle size between 3 and 8 μm inclusive.

    摘要翻译: 热喷涂粉末包括通过在空气或氧气中造粒和烧结原料粉末而获得的造粒和烧结的氧化钇颗粒。 构成造粒烧结氧化钇粒子的一次粒子的平均粒径为0.5〜1.5μm,为原料粉末的1.11倍以上。 或者,一次粒子的平均粒径为3〜8μm,包括3和8μm。