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    • 34. 发明授权
    • At-cut crystal resonator
    • 切割晶体谐振器
    • US6114801A
    • 2000-09-05
    • US202737
    • 1998-12-14
    • Yoshiaki TanakaMitsuhiro NishidaToshio SugiyamaHiroyuki Kobayashi
    • Yoshiaki TanakaMitsuhiro NishidaToshio SugiyamaHiroyuki Kobayashi
    • H03H3/04H03H9/19H01L41/08
    • H03H9/19H03H3/04Y10T29/42
    • In an AT-cut quartz resonator having excitation electrodes formed on two principal surfaces of an AT-cut quartz substrate, the two electrodes are displaced a predetermined amount apart in a direction orthogonal to the X-axis direction so that a frequency deviation in a temperature range of from -10.degree. C. to 50.degree. C. is less than .+-.2.5 ppm. Further, in an AT-cut quartz resonator in which vertically opposed electrodes on both principal surfaces of a quartz substrate are slightly displaced apart in opposite directions along the Z' axis of quartz crystal, a balancing load is formed on a piezoelectric substrate on the side opposite to the direction of displacement of the electrodes. Thus, the present invention dispenses with the need for raising the ratio of conforming to nonconforming quartz substrates by eliminating variations in their cutting angle, but makes it possible to use nonconforming quartz substrates to offer customers low-cost quartz resonators of oscillation frequencies following various specs, by making easy, simple structural modifications of slightly changing the electrode arrangement or structure, or by making simple improvements to the conventional quartz resonator manufacturing process. In the manufacture of oscillators for use in consumer-electronics equipment, it is possible to fulfill any particular specs without inserting a temperature compensating circuit in the oscillation circuit. In regards to industrial equipment, any adjustments need not be made to the temperature compensating circuit in the oscillation circuit, and this improves the productivity of various communications equipment and various electronics equipment and reduces their manufacturing costs.
    • PCT No.PCT / JP98 / 01526 Sec。 371 1998年12月14日第 102(e)1998年12月14日日期PCT提交1998年4月2日PCT公布。 第WO98 / 47226号公报 日期:1998年10月22日在AT切割石英振子中,在AT切割石英基板的两个主表面上形成有激励电极,两个电极沿与X轴方向正交的方向分开预定量, 在-10℃至50℃的温度范围内的频率偏差小于+/- 2.5ppm。 此外,在石英基板的两个主表面上的垂直相对的电极在沿石英晶体的Z'轴的相反方向上稍微偏移的AT切割石英谐振器中,在侧面的压电基板上形成平衡负载 与电极的位移方向相反。 因此,通过消除其切割角度的变化,本发明不需要提高符合不合格石英基板的比例,而是使用不合格石英基板为客户提供符合各种规格的低成本石英谐振器的振荡频率 通过对电极布置或结构稍微改变的简单,简单的结构修改,或通过简单改进传统的石英谐振器制造方法来实现。 在用于消费电子设备的振荡器的制造中,可以在振荡电路中不插入温度补偿电路来实现任何特定的规格。 关于工业设备,不需要对振荡电路中的温度补偿电路进行任何调整,这提高了各种通信设备和各种电子设备的生产率,并降低了其制造成本。
    • 38. 发明授权
    • Scroll-type vacuum apparatus with oil supply to a compression chamber
    • 滚动式真空装置,具有供给压缩室的油
    • US4865530A
    • 1989-09-12
    • US178300
    • 1988-04-06
    • Mitsuhiro NishidaIsamu EtouEtsuo Morishita
    • Mitsuhiro NishidaIsamu EtouEtsuo Morishita
    • F04C18/02F04C29/02
    • F04C29/023F04C18/023
    • A scroll-type positive displacement apparatus which can be used as a vacuum pump is disclosed. A pair of interfitting scrolls are housed in a first container which communicates with a vacuum chamber to be evacuated by the pump. The scrolls are rotated in synchrony about parallel, nonaligned axis by a drive motor. The scrolls define a plurality of spiral compression chambers which change in size when the scrolls are rotated, compressing a gas contained in the compression chambers. The shaft of one of the scrolls has a discharge port formed therein which communicates between the centermost compression chamber and the inside of a second container which adjoins the first container. The second container is partially filled with lubricating oil and communicates with the atmosphere. The discharge port is equipped with a check valve which permits compressed gas to enter the second container from the scrolls but prevents gas from flowing in the opposite direction. The pump may be further equipped with one or more oil supply passageways formed in the shaft of the scroll in which the discharge port is formed. Lubricating oil is introduced via the oil supply passageway from the second container into one or more of the compression chambers of the pump.
    • 公开了可用作真空泵的涡旋式正位移装置。 一对相互配合的涡卷容纳在与真空室相通的第一容器中,该真空室被泵抽真空。 卷轴通过驱动电机以并行的,非对齐的轴线同步旋转。 涡卷限定了多个螺旋压缩室,当涡旋件旋转时其尺寸变化,压缩包含在压缩室中的气体。 一个涡旋件的轴具有形成在其中的排出口,其连通中心压缩室与邻接第一容器的第二容器的内部。 第二容器部分地装有润滑油并与大气连通。 排放口配备有止回阀,其允许压缩气体从涡管进入第二容器,但是防止气体沿相反方向流动。 泵还可以配备有形成在其中形成有排出口的涡管的轴中的一个或多个供油通道。 润滑油通过供油通道从第二容器引入泵的一个或多个压缩室。
    • 39. 发明授权
    • Shaft seal device for submersible motor
    • 潜水电机轴封装置
    • US4421324A
    • 1983-12-20
    • US492673
    • 1983-05-09
    • Sakuei YamamotoHiroshi InaoKiyonori TokumitsuMitsuhiro NishidaSadahiro Kumamoto
    • Sakuei YamamotoHiroshi InaoKiyonori TokumitsuMitsuhiro NishidaSadahiro Kumamoto
    • F16J15/40F16J15/32
    • F16J15/40Y10S277/918
    • A shaft seal device for a submersible motor, comprising a seal box which is provided at an end part of a case of the motor; a pair of lip type shaft sealing members which are disposed between an inner surface of said seal box and a rotary shaft of the motor and whose lips are arranged so as to inwardly face each other with a spacing therebetween; a lubricant which is stored in an interspace defined between said shaft sealing member; an auxiliary refuse remover which adjoins an outer side of one of said shaft sealing members and which is snugly inserted between the inner surface of an end part of said seal box and the rotary shaft of the motor, said auxiliary refuse remover being composed of a fitting and a soft material member which is received in said fitting and which is snugly positioned on the rotary shaft of the motor; and another refuse remover which is disposed so as to adjoin an outer side of said auxiliary refuse remover.
    • 一种用于潜水电动机的轴封装置,包括设置在电动机壳体的端部处的密封箱; 一对唇型轴密封构件,其设置在所述密封箱的内表面和所述电机的旋转轴之间,并且其唇部以彼此间隔的方式彼此面对地布置; 存储在所述轴密封构件之间限定的间隙中的润滑剂; 辅助垃圾清除器,其邻接所述轴密封构件中的一个的外侧,并且紧密地插入在所述密封箱的端部的内表面和所述电动机的旋转轴之间,所述辅助垃圾移除器由配件 以及容纳在所述配件中并且紧密地定位在所述电动机的旋转轴上的软质材料构件; 以及另一垃圾去除器,其设置成邻接所述辅助垃圾清除器的外侧。