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    • 7. 发明授权
    • Diaphragm valve
    • 隔膜阀
    • US06786471B2
    • 2004-09-07
    • US10178501
    • 2002-06-25
    • Tomohiro NakataMichio Yamaji
    • Tomohiro NakataMichio Yamaji
    • F16K100
    • F16K7/16
    • A diaphragm valve assembly comprising a body defining a valve chamber and first and second passageways through said, a removable, annular valve seat installed in the valve chamber around of said passageways, seat holding means comprising a seat holder shaped to surround said valve seat, a flexibly resilient diaphragm having a valve closing portion and means for holding the diaphragm in position in the valve chamber. The resilience of the diaphragm urges said valve closing portion away from the valve seat. Selectively operable driving means drive the valve closing portion of the diaphragm into contact with the valve seat for closing the valve. A protruding, cylindrical rim portion around said one passageway, and said seat holder define an annular recess adapted to receive the valve seat such that said valve seat is held between said seat holder and said rim portion.
    • 一种隔膜阀组件,其包括限定阀室的主体和通过所述可拆卸的环形阀座的第一和第二通道,安装在所述通道周围的阀室中,座保持装置包括形成为围绕所述阀座的座座, 具有阀关闭部分的柔性弹性膜片和用于将隔膜保持在阀室中就位的装置。 隔膜的弹性促使所述阀关闭部分远离阀座。 可选择地操作的驱动装置驱动隔膜的阀关闭部分与阀座接触以关闭阀。 围绕所述一个通道的突出的圆柱形边缘部分,并且所述座椅保持器限定适于接纳阀座的环形凹部,使得所述阀座保持在所述座椅保持件和所述边缘部分之间。
    • 8. 发明授权
    • Method and apparatus for burnishing magnetic disks
    • 抛光磁盘的方法和装置
    • US5431592A
    • 1995-07-11
    • US132857
    • 1993-10-07
    • Tomohiro Nakata
    • Tomohiro Nakata
    • B24B21/00B24B21/20G11B5/84B24B21/12
    • B24B21/20G11B5/84
    • While a magnetic disk is being rotated, compressed air is jetted to corresponding positions on the two surfaces of the magnetic disk. An abrasive tape, which has tension in its longitudinal direction, is interposed between at least either one of the two surfaces of the magnetic disk and the compressed air jetted thereto such that the compressed air may now be jetted to the abrasive tape. The air pressure of the compressed air, which is jetted to the abrasive tape, and the tension on the abrasive tape are adjusted such that the abrasive tape may be formed into a bent shape having a level of rigidity appropriate for pushing the magnetic disk. The bent shape portion of the abrasive tape is brought into sliding contact with the magnetic surface of the magnetic disk, and the region of the sliding contact of the magnetic surface of the magnetic disk with the abrasive tape is thereby uniformly burnished.
    • 当磁盘正在旋转时,压缩空气被喷射到磁盘的两个表面上的对应位置。 在其纵向具有张力的砂带被插入在磁盘的两个表面中的至少任一个和喷射到其上的压缩空气之间,使得现在可以将压缩空气喷射到砂带上。 喷射到砂带上的压缩空气的空气压力和砂带上的张力被调节,使得砂带可以形成为具有适于推动磁盘的刚度水平的弯曲形状。 研磨带的弯曲形状部分与磁盘的磁性表面滑动接触,因此磁盘的磁性表面与砂带的滑动接触区域被均匀地抛光。
    • 9. 发明授权
    • Magnetic tape wind-up control method, and tape wind-up apparatus
    • 磁带卷绕控制方法和磁带卷绕装置
    • US4977466A
    • 1990-12-11
    • US374802
    • 1989-07-03
    • Tomohiro Nakata
    • Tomohiro Nakata
    • B65H18/10G11B15/43G11B15/46G11B23/113
    • B65H18/103G11B15/43G11B15/46G11B23/113B65H2557/242B65H2801/45
    • A magnetic tape wind-up control method comprises the steps of controlling the speed, at which a feed motor is rotated, in accordance with a signal generated by a tape movement detector, and controlling the speed, at which a wind-up motor is rotated, in accordance with a signal which represents the position of a dancing arm, which thereby controls the tension on the magnetic tape. The number of revolutions completed by the wind-up motor is detected, and the outer diameter of a roll of magnetic tape, which is being wound around a wind-up reel, is calculated from the thickness of the magnetic tape, the diameter of a core of the wind-up reel, and the number of revolutions completed by the wind-up motor. The value indicated by a tape speed command is divided by the outer diameter of the roll of the magnetic tape. A rotation speed command signal, which represents the quotient of this division, is generated, and the speed of rotation of the wind-up motor is controlled on the basis of the rotation speed command signal. Simultaneously, the tension on the magnetic tape is controlled on the basis of the position of the dancing arm.
    • 磁带卷绕控制方法包括以下步骤:根据由磁带移动检测器产生的信号来控制进给马达旋转的速度,并且控制卷绕马达旋转的速度 根据表示跳舞臂的位置的信号,由此控制磁带上的张力。 检测由卷绕电动机完成的转数,并根据磁带的厚度计算卷绕卷绕卷轴的一卷磁带的外径,直径 卷绕卷轴的芯部以及卷绕马达完成的转数。 由磁带速度指令指示的值除以磁带卷的外径。 生成表示该除法的商的转速指令信号,根据转速指令信号来控制卷绕电动机的转速。 同时,基于跳舞臂的位置来控制磁带上的张力。