High-strength high-toughness precipitation-hardened steel
    1.
    发明授权
    High-strength high-toughness precipitation-hardened steel 有权
    高强度高韧性沉淀硬化钢

    公开(公告)号:US06743305B2

    公开(公告)日:2004-06-01

    申请号:US10038223

    申请日:2001-10-23

    IPC分类号: C22C3842

    摘要: A stainless steel alloy that exhibits both high strength and toughness as a result of having particular ranges for chemistry, tempering temperatures and grain size. The alloy is a precipitation-hardened martensitic stainless steel with an ultimate tensile strength of at least 1200 MPa, a Charpy impact toughness of greater than 55 J, and a grain size of ASTM 5 or finer. The alloy consists essentially of, by weight, 14.0 to 16.0 percent chromium, 6.0 to 7.0 percent nickel, 1.25 to 1.75 percent copper, 0.5 to 1.0 percent molybdenum, 0.03 to 0.5 percent carbon, niobium in an amount by weight of ten to twenty times greater than carbon, the balance iron, minor alloying constituents and impurities.

    摘要翻译: 由于具有化学,回火温度和晶粒尺寸的特定范围的结果,表现出高强度和韧性的不锈钢合金。 该合金是极限拉伸强度至少为1200MPa,夏比冲击韧性大于55J,晶粒尺寸为ASTM5或更细的沉淀硬化马氏体不锈钢。 该合金基本上由重量计为14.0至16.0%的铬,6.0-7.0%的镍,1.25至1.75%的铜,0.5至1.0%的钼,0.03至0.5%的碳,铌,重量的十至二十倍 大于碳,余量为铁,次要合金成分和杂质。

    VIBRATIONAL DRILL HEAD
    2.
    发明申请

    公开(公告)号:US20180355668A1

    公开(公告)日:2018-12-13

    申请号:US16003664

    申请日:2018-06-08

    IPC分类号: E21B6/02 E21B7/24

    CPC分类号: E21B6/02 E21B7/24

    摘要: A drill head system including a drill head having a spindle configured to be operatively coupled to a vibration source to cause the spindle to vibrate in an axial direction, the spindle having a passageway. The system further includes a sleeve receiving said spindle therein with a gap therebetween. The sleeve is configured to be coupled to a fluid source to thereby introduce a fluid into the gap and into the passageway of the spindle.

    Video sound
    4.
    发明授权
    Video sound 失效
    视频声音

    公开(公告)号:US5027403A

    公开(公告)日:1991-06-25

    申请号:US469689

    申请日:1990-01-26

    摘要: A sound projection apparatus for a video display device having left and right speakers, first and second ambience speakers, and an amplifier having a right channel and left channel. In this system, connection of the left channel to a speaker produces a left signal; the right channel to a speaker produces a right signal; the left and right channels to ambience circuitry produces an ambience channel; the ambience channel to the positive input of the first ambience speaker produces a first ambience signal and the ambience channel to the negative input of the second ambience speaker produces a second ambience signal. The left and right speakers are forward facing, projecting sound directly from the television to a viewer. The first and second ambience speakers are side or rearward facing, projecting sound indirectly to the viewer. The projection apparatus may be formed as a single cohesive unit, within or near the television.

    摘要翻译: 一种用于具有左右扬声器,第一和第二氛围扬声器以及具有右声道和左声道的放大器的视频显示装置的声音投影装置。 在该系统中,左声道与扬声器的连接产生左信号; 扬声器的右声道产生正确的信号; 左右通道到环境电路产生一个氛围通道; 第一氛围扬声器的正向输入的氛围通道产生第一环境信号,并且到第二氛围扬声器的负输入的环境声道产生第二环境信号。 左右扬声器向前,从电视直接投影到观看者。 第一和第二氛围扬声器是侧面或后面的,间接地向观看者投射声音。 投影装置可以形成为电视机内或附近的单个内聚单元。

    Controlling a power converter
    7.
    发明申请
    Controlling a power converter 有权
    控制电源转换器

    公开(公告)号:US20050280312A1

    公开(公告)日:2005-12-22

    申请号:US10872040

    申请日:2004-06-18

    摘要: In response to a change in a circuit parameter of a converter delivering power to a load, the converter is operated in a mode in which additional power is supplied to the load by a capacitive element that is in parallel with the converter, the circuit parameter including a parameter other than input current.

    摘要翻译: 响应于向负载输送功率的转换器的电路参数的变化,转换器以通过与转换器并联的电容元件向负载提供附加功率的模式操作,电路参数包括 输入电流以外的参数。