Wooden bars arranged for percussion instruments
    31.
    发明授权
    Wooden bars arranged for percussion instruments 有权
    木制酒吧安排打击乐器

    公开(公告)号:US06838604B2

    公开(公告)日:2005-01-04

    申请号:US10235481

    申请日:2002-09-06

    IPC分类号: G10D13/00 G10D13/06 G10D13/08

    CPC分类号: G10D13/06 G10D13/08

    摘要: A prescribed number of bars are arranged in a percussion instrument such as a xylophone and marimba, wherein each bar is formed by a base layer, a fiber reinforced plastic layer, and a surface layer that are combined together using an epoxy adhesive therebetween. Both the base layer and surface layer is made of the prescribed hardwood material such as rosewood, hard birch, padauk, and Chinese quince, while the fiber reinforced plastic layer is formed by laminating one or more fiber reinforced plastic sheets, each of which is formed by impregnating and hardening thermosetting epoxy resin with fibers. All fibers can be aligned in a single direction slanted to the longitudinal direction of the bar. Alternatively, fibers are woven in two directions rectangularly crossing each other in a cloth form. Thus, it is possible to improve bars in striking durability as well as in sound quality and design.

    Binder composition for production of molds and method of producing mold
    32.
    发明授权
    Binder composition for production of molds and method of producing mold 失效
    用于生产模具的粘合剂组合物和生产模具的方法

    公开(公告)号:US5932628A

    公开(公告)日:1999-08-03

    申请号:US793150

    申请日:1997-02-19

    IPC分类号: B22C1/22

    CPC分类号: B22C1/224

    摘要: The binder composition for the production of molds of the present invention comprises a binder obtained by polycondensation of polycondensable components comprising as major components furfuryl alcohol, urea, and an aldehyde. In the binder contained in the binder composition for the production of molds, the difference �A-B! between the weight % of charged furfuryl alcohol (A) based on the weight of the binder and the weight % of unreacted furfuryl alcohol (B) based on the weight of the binder is 5.0 to 60.0. When the binder composition for the production of molds of the present invention is used, the curing of the binder is further accelerated without deteriorating the working atmosphere.

    摘要翻译: PCT No.PCT / JP95 / 01633 Sec。 371日期1997年2月19日 102(e)日期1997年2月19日PCT 1995年8月17日PCT PCT。 出版物WO96 / 05925 日本1996年2月29日本发明的模具的制造用粘合剂组合物包含通过缩聚作为主要成分的糠醇,尿素和醛的缩聚成分缩聚得到的粘合剂。 在用于生产模具的粘合剂组合物中所含的粘合剂中,基于粘合剂的重量,加入的糠醇(A)的重量%与未反应的糠醇的重量%(B)之间的差异[AB]基于 粘合剂的重量为5.0〜60.0。 当使用用于制造本发明的模具的粘合剂组合物时,粘合剂的固化进一步加速而不会使工作气氛恶化。

    Spatial light modulating apparatus to display stereoscopic image
    35.
    发明授权
    Spatial light modulating apparatus to display stereoscopic image 失效
    用于显示立体图像的空间光调制装置

    公开(公告)号:US5585960A

    公开(公告)日:1996-12-17

    申请号:US373791

    申请日:1995-01-17

    摘要: A spatial light modulating apparatus to display a steroscopic image constructed by a light source section, a mirror section, and a light deflecting section. The device structures are two-dimensionally arranged on a substrate surface. The light source sections are 2-dimensionally arranged on the apparatus substrate at a predetermined period interval (P) and modulate a light intensity by an external signal, thereby displaying an image. The reflecting surfaces of the mirror sections are periodically arranged in correspondence to the light source sections. The mirror sections change the direction of each of the reflecting surfaces by an external signal, thereby angle modulating the incident light. Further, the light deflecting sections are arranged in the upper portion in the light emitting direction from the plurality of light source sections and allow the lights emitted from the light source sections to enter the corresponding mirror sections.

    摘要翻译: 一种空间光调制装置,用于显示由光源部分,镜部分和光偏转部分构成的立体图像。 器件结构被二维布置在衬底表面上。 光源部分以预定的周期间隔(P)二维地布置在装置基板上,并且通过外部信号调制光强度,从而显示图像。 反射镜部的反射面相对于光源部周期性地排列。 镜部通过外部信号改变每个反射面的方向,从而对入射光进行角度调制。 此外,光偏转部分从多个光源部分沿发光方向布置在上部,并且允许从光源部分发射的光进入相应的镜部分。

    Numerical control apparatus of machines
    37.
    发明授权
    Numerical control apparatus of machines 失效
    数控机器设备

    公开(公告)号:US5153490A

    公开(公告)日:1992-10-06

    申请号:US671406

    申请日:1991-03-19

    摘要: In a machine tool having a table adapted to support a workpiece, a plurality of drive shafts for moving the table in three directional directions by servomotors, servo control apparatus controlling the servomotors in response to position instructions, drive shaft control apparatus including position detectors of the servomotors, each drive shaft control apparatus is made up of a servomotor rotation reversal detector for producing a movement reversal signal, a memory device for storing correction amounts necessary to compensate for a position error of the axis of the spindle of the machine tool which occurs as a result of reversal of the direction of movement of the drive shaft and other drive shafts and a transfer switches for selecting the memory device in response to the movement reversal signal and for feeding back to the servo control apparatus the correction amount read out from the memory device.

    摘要翻译: 在具有适于支撑工件的工作台的机床中,用于通过伺服电动机在三个方向上移动工作台的多个驱动轴,响应于位置指令控制伺服电机的伺服控制装置,包括位置检测器的驱动轴控制装置 伺服电动机,每个驱动轴控制装置由用于产生运动反转信号的伺服电机旋转反转检测器构成,存储装置用于存储校正量,以补偿机床主轴的位置误差,该位置误差作为 驱动轴和其他驱动轴的移动方向反转的结果和用于响应于移动反转信号选择存储装置的转移开关,并且向伺服控制装置反馈从存储器读出的校正量 设备。

    Laser beam scanner and its fabricating method
    38.
    发明授权
    Laser beam scanner and its fabricating method 失效
    激光束扫描器及其制造方法

    公开(公告)号:US4957336A

    公开(公告)日:1990-09-18

    申请号:US269412

    申请日:1988-11-10

    IPC分类号: G02B26/10

    CPC分类号: G02B26/106 Y10S359/90

    摘要: A high precision laser beam scanner is provided which is able to shape a beam generated by a laser, suppress the influence of jitter of a scanning beam due to mode hopping of a semiconductor laser, and reduce aberration of the scanning beam. A beam source generates a semiconductor laser beam, which is diffracted by a rotary hologram, forming a scanning beam on a surface to be scanned. An aberration correcting stationary hologram is disposed between the beam source and the rotary hologram. The stationary hologram is constructed with an object wave and a reference wave, which interfere on a stationary hologram substrate subject so that an aberration of the scanning beam on the surface to be scanned shall be corrected. The object wave is a spherical wave which has an aberration, a wave length shorter than that of the semiconductor laser beam, and an incident angle which is not vertical but is inclined with respect to the stationary hologram substrate. A method for fabricating the laser beam scanner is also provided.

    摘要翻译: 提供了能够对由激光产生的光束进行成形的高精度激光束扫描器,抑制由于半导体激光器的跳跃而导致的扫描光束的抖动的影响,并且减小扫描光束的像差。 光束源产生通过旋转全息图衍射的半导体激光束,在要扫描的表面上形成扫描光束。 像差校正固定全息图设置在光束源和旋转全息图之间。 固定全息图由对象波和参考波构成,其干涉固定的全息图基板对象,使得要扫描的表面上的扫描光束的像差被校正。 对象波是具有像差,波长短于半导体激光束的像差的球面波,并且不是垂直但相对于静止全息图基板倾斜的入射角。 还提供了一种用于制造激光束扫描器的方法。

    Pulse width modulation amplifier circuit
    40.
    发明授权
    Pulse width modulation amplifier circuit 失效
    脉宽调制放大电路

    公开(公告)号:US4949048A

    公开(公告)日:1990-08-14

    申请号:US433234

    申请日:1989-11-08

    IPC分类号: H03F1/56 H03F3/217 H03F3/68

    CPC分类号: H03F3/2173 H03F3/2171

    摘要: A pulse width modulation amplifier circuit includes a comparator which receives an analog signal and generates first and second analog signals having a phase difference of 180 degrees. A phase shifting circuit produces first and second triangular wave carrier signals so as to establish therebetween a phase difference of approximately 90 degrees. First and second pulse width modulation amplifiers, having output terminals connected to a load, pulse width modulate the first and second triangular wave carrier signals with said first and second analog signals, respectively, and amplify resultant pulse width signals.

    摘要翻译: 脉宽调制放大器电路包括一个接收模拟信号并产生具有180度相位差的第一和第二模拟信号的比较器。 相移电路产生第一和第二三角波载波信号,以便在其间建立大约90度的相位差。 具有连接到负载的输出端子的第一和第二脉冲宽度调制放大器分别用所述第一和第二模拟信号对脉冲宽度调制第一和第二三角波载波信号,并放大合成脉冲宽度信号。