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    • 1. 发明授权
    • Group of taps with prepared hole cutting tools
    • 一组抽头与准备孔切削工具
    • US08496534B2
    • 2013-07-30
    • US12449392
    • 2007-02-21
    • Jiro OsawaTakehiro YamamotoTakayuki Nakajima
    • Jiro OsawaTakehiro YamamotoTakayuki Nakajima
    • B23B51/08B23B51/00
    • B23G5/20B23G2200/143Y10T408/352Y10T408/356Y10T408/9048
    • In FIG. 2, a diameter Dd of drilling edges of a drill is selected smaller than a valley diameter d1 of a male thread of a tap portion, and an inner diameter D1 of a female thread is defined by the valley diameter d1 of the male thread. Therefore, a predetermined radial gap is formed between the male thread 30 formed by the tap portion and the drill. When a tap with the drill is reversely rotated to be pulled out from the female thread after cutting the female thread, the tap released from the restriction may deflectively displace in the diameter direction upon pulling out the male thread of the tap portion from the female thread. However, the drill hardly contacts with the female thread, so that the occurrence of the defective product due to the contact is suppressed.
    • 在图 如图2所示,选择钻头的钻削刃的直径Dd小于龙头部的外螺纹的谷径d1,内螺纹的内径D1由外螺纹的谷径d1限定。 因此,在由龙头部形成的阳螺纹30与钻头之间形成预定的径向间隙。 当切割内螺纹时,当钻头的龙头反向旋转以从内螺纹拉出时,从限位器释放的龙头在从螺纹拔出龙头部分的外螺纹时可以在直径方向上偏转地移位 。 然而,钻头几乎不与内螺纹接触,从而抑制了由于接触引起的缺陷产品的发生。
    • 7. 发明授权
    • Piezoelectric device
    • 压电元件
    • US07446460B2
    • 2008-11-04
    • US11806816
    • 2007-06-04
    • Takehiro Yamamoto
    • Takehiro Yamamoto
    • H01L41/053
    • H03H9/1021H03H9/0552
    • A piezoelectric device includes a piezoelectric element, a circuit board on which the piezoelectric element is mounted, an IC component having at least a function of oscillating the piezoelectric element and connected to a bottom face of the circuit board, an insulating section covering at least a part of the IC component, a circuit connection terminal formed on a main surface of the IC component, an internal connection bump formed on the circuit connection terminal and connected to the circuit connection terminal and the bottom face of the circuit board, a functional terminal formed on a main surface of the IC component, a back surface electrode formed on a back surface of the IC component, a penetrating electrode penetrating the IC component from the main surface to the back surface and connecting the functional electrode and the back surface electrode to each other, an external connection bump connected to the back surface electrode, and a mounting terminal formed on a surface of the insulating section, and a part of the external connection bump is exposed from the surface of the insulating section and is connected to the mounting terminal.
    • 压电元件包括​​:压电元件,安装有压电元件的电路基板,具有至少具有摆动压电元件并与电路基板的底面连接的功能的IC元件,绝缘部分至少覆盖 IC部件的一部分,形成在IC部件的主表面上的电路连接端子,形成在电路连接端子上并连接到电路连接端子和电路板的底面的内部连接凸块,形成的功能端子 在IC部件的主面上,形成在IC部件的背面的背面电极,从主表面向背面贯穿IC部件的贯通电极,将功能电极和背面电极连接到各个 另一方面,连接到背面电极的外部连接凸起,以及形成在其表面上的安装端子 e绝缘部分,并且外部连接凸块的一部分从绝缘部分的表面露出并连接到安装端子。
    • 8. 发明授权
    • Crystal oscillator
    • 水晶振荡器
    • US07348859B2
    • 2008-03-25
    • US11461527
    • 2006-08-01
    • Takehiro Yamamoto
    • Takehiro Yamamoto
    • H03B5/32
    • H03B5/36
    • A crystal oscillator that outputs an oscillation output signal of an oscillator circuit oscillated by a crystal resonator as a resonation source via a buffer circuit, includes: a plurality of waveform output circuits provided in the buffer circuit, each converting, when inputted, the oscillation output signal into a different waveform and outputting the converted signal; a circuit selection switch that selects any one of the plurality of waveform output circuits as a waveform output circuit of the buffer circuit; and a memory circuit that stores data used by the circuit selection switch to select any one of the waveform output circuits.
    • 输出振荡电路的振荡输出信号的晶体振荡器,其由作为谐振源的晶体谐振器经由缓冲电路振荡的振荡电路,包括:缓冲电路中设置的多个波形输出电路,每个输入端输入振荡输出 信号转换成不同的波形并输出转换的信号; 电路选择开关,其选择所述多个波形输出电路中的任一个作为所述缓冲电路的波形输出电路; 以及存储电路,其存储由所述电路选择开关使用的数据,以选择所述波形输出电路中的任何一个。