Aluminum nitride powder and process for preparation of the same
    1.
    发明授权
    Aluminum nitride powder and process for preparation of the same 失效
    氮化铝粉末及其制备方法

    公开(公告)号:US5049367A

    公开(公告)日:1991-09-17

    申请号:US417104

    申请日:1989-10-04

    IPC分类号: C01B21/072 H01L21/48

    摘要: An aluminum nitride powder obtained by firing and reacting a mixture of alumina and carbon in a nitrogen-containing atmosphere is disclosed, the aluminum nitride powder having an oxygen content of not more than 2.0% by weight, an iron content of not more than 20 ppm, a silicon content of not more than 100 ppm, and a titanium content of not more than 20 ppm and having has a tapped density of at least 1.0 g/cm.sup.3. An aluminum nitride powder containing from 0.01% to 10% by weight of a sintering aid is also disclosed, the aluminum nitride powder having an oleophilic surface and having a tapped density of at least 1.0 g/cm.sup.3. The aluminum nitride powder of the present invention has excellent moldability, has a high tapped density, is less in formation of coagulated particles, and has a sharp particle size distribution.

    Abrasive used in magnetic recording medium and production thereof
    3.
    发明授权
    Abrasive used in magnetic recording medium and production thereof 失效
    磁记录介质中使用的磨料及其制造

    公开(公告)号:US4590127A

    公开(公告)日:1986-05-20

    申请号:US693226

    申请日:1985-01-22

    摘要: When an abrasive having an oleophilic surface intended for use in magnetic recording media, said abrasive being obtained by subjecting an inorganic powder material having a Mohs hardness of 5 or above and an average particle size of 2 .mu.m or below to a wet contact treatment with an aqueous solution or an organic solvent solution containing a dispersing agent having an oleophilic group and drying the treated powder material, is used together with a magnetic powder material in the magnetic recording layer of a magnetic recording medium, the wear of the magnetic head can be prevented and the still characteristics of the recording medium is improved.

    摘要翻译: 当具有旨在用于磁记录介质的亲油表面的研磨剂时,所述研磨剂是通过将莫氏硬度为5以上且平均粒径为2μm以下的无机粉末材料进行湿接触处理而获得的, 含有亲油基团的分散剂并干燥处理的粉末材料的水溶液或有机溶剂溶液与磁性记录介质的磁记录层中的磁性粉末材料一起使用,磁头的磨损可以是 防止了记录介质的静止特性。

    Method for producing .alpha.-form silicon nitride
    4.
    发明授权
    Method for producing .alpha.-form silicon nitride 失效
    α-型氮化硅的制造方法

    公开(公告)号:US4724131A

    公开(公告)日:1988-02-09

    申请号:US921808

    申请日:1986-10-20

    IPC分类号: C01B21/068

    摘要: A method for producing .alpha.-form silicon nitride having a central particle diameter of 0.3 to 1.0 .mu.m (.alpha.-Si.sub.3 N.sub.4) of high-grade and fine powder for its sintered body excellent in heat-stability and mechanical strength which comprises heat-treating at 1,450.degree.-1,550.degree. C., in an atmosphere containing nitrogen, a mixture prepared by adding one of additives:(a) a mixture of at least one of Be, Sr, Ge, Sn, Ti, Hf and compounds thereof with 0.01-1 part by weight of silicon nitride powder having a BET specific surface area of 15 to 50 m.sup.2 /g and consisting substantially of the .alpha.-form crystal, and(b) a mixture of Zr and compounds thereof with 0-1 part by weight of silicon nitride powder having a BET specific surface area of 15 to 50 m.sup.2 /g and consisting substantially of the .alpha.-form crystal,in a total amount of 0.001-0.1 part by weight calculated in terms of elemental weight(s) of Be, Sr, Ge, Sn, Ti, Hf and Zr and 1 part or less by weight of silicon nitride powder having a BET specific surface area of 15 to 50 m.sup.2 /g and consisting substantially of the .alpha.-form crystal, to 1 part by weight of silicon oxide powder of 1 to 100 .mu.m in central particle diameter and 0.4-4 parts by weight of carbon powder.

    摘要翻译: 一种生产具有中等粒径为0.3-1.0μm(对于其热稳定性和机械强度优异的烧结体的高级细粉末的α-Si 3 N 4)的α-型氮化硅的方法,包括热处理 在含有氮气的气氛中,通过添加添加剂之一制备的混合物:(a)Be,Sr,Ge,Sn,Ti,Hf中的至少一种与其化合物的混合物与0.01- 1重量份的BET比表面积为15〜50m 2 / g并且基本上由α型晶体组成的氮化硅粉末,和(b)Zr及其化合物与0-1重量份的 BET比表面积为15〜50m2 / g,基本上由α型晶体组成的氮化硅粉末,其总量为0.001-0.1重量份,以Be,Sr的元素重量计算 ,Ge,Sn,Ti,Hf和Zr以及1重量份的具有B的氮化硅粉末 ET比表面积为15〜50m2 / g,基本上由α型晶体组成,1重量份的中心粒径为1〜100μm的氧化硅粉末和0.4〜4重量份的碳粉末 。

    Method for producing .alpha.-form silicon nitride fine powders
    5.
    发明授权
    Method for producing .alpha.-form silicon nitride fine powders 失效
    生产α型氮化硅细粉的方法

    公开(公告)号:US4590053A

    公开(公告)日:1986-05-20

    申请号:US747851

    申请日:1985-06-24

    IPC分类号: C01B21/068 C04B35/584

    摘要: A method for producing a high-grade fine powder of .alpha.-form silicon nitride (.alpha.-Si.sub.3 N.sub.4) for use as sintered bodies excellent in heat-stability and mechanical strength which comprises heat-treating, in an atmosphere containing nitrogen, a mixture prepared by adding additive:a mixture of at least one of Mg, Ca, and compounds thereof with 0.01-1 part by weight of silicon nitride powder,in a total amount of 0.001-0.1 part by weight calculated in terms of elemental weight(s) of Mg or/and Ca, and 1 part or less by weight of silicon nitride powder, to 1 part by weight of silicon oxide powder and 0.4-4 parts by weight of carbon powder.

    摘要翻译: 一种制造用作热稳定性和机械强度优异的烧结体的α型氮化硅(α-Si 3 N 4)的高级细粉末的方法,包括在含氮气氛中热处理由 添加添加剂:Mg,Ca及其化合物中的至少一种与0.01-1重量份氮化硅粉末的混合物,其总量为0.001-0.1重量份,以元素重量 Mg或/和Ca,1重量份或更少的氮化硅粉末,至1重量份氧化硅粉末和0.4-4重量份碳粉末。

    Focus control apparatus for multilayer optical recording medium
    7.
    发明授权
    Focus control apparatus for multilayer optical recording medium 失效
    用于多层光记录介质的聚焦控制装置

    公开(公告)号:US06246646B1

    公开(公告)日:2001-06-12

    申请号:US09114880

    申请日:1998-07-14

    IPC分类号: G11B709

    摘要: A focus control apparatus for a multilayer optical recording medium performs an adequate focus jump on a multilayer optical recording medium. Threshold values are set according to the amount of a level change in a focus error signal of a loaded multilayer optical recording medium, and focus jump control is conducted based on the result of comparison between the level of the focus error signal and the set threshold values. Positive and negative threshold values to be compared with the level of the focus error signal to detect a zero-crossing point of the focus error signal are set in accordance with the amount of a level change in the focus error signal, after which an acceleration operation of the focus actuator is started in response to a focus jump instruction to shift the focus position of read light for a focus jump, the acceleration operation is stopped in accordance with zero-crossing detection, a deceleration operation of the focus actuator is started thereafter and is stopped in accordance with zero-crossing detection, so that the operation returns to the focus servo operation.

    摘要翻译: 用于多层光学记录介质的聚焦控制装置在多层光学记录介质上执行适当的聚焦跳跃。 根据加载的多层光学记录介质的聚焦误差信号中的电平变化量设定阈值,并且基于聚焦误差信号的电平与设定的阈值之间的比较结果进行聚焦跳跃控制 。 根据聚焦误差信号的电平变化量,设定要与聚焦误差信号的电平进行比较以检测聚焦误差信号的过零点的正和负阈值,然后加速操作 响应于聚焦跳转指令开始移动聚焦跳跃的读取光的焦点位置,根据过零检测停止加速操作,此后开始聚焦致动器的减速操作,并且 根据过零检测停止,使得操作返回到聚焦伺服操作。

    Fuel regulation apparatus and fuel injection apparatus of engine for model
    8.
    发明授权
    Fuel regulation apparatus and fuel injection apparatus of engine for model 失效
    发动机燃油调节装置和燃油喷射装置

    公开(公告)号:US06227171B1

    公开(公告)日:2001-05-08

    申请号:US09293879

    申请日:1999-04-19

    申请人: Norio Matsuda

    发明人: Norio Matsuda

    IPC分类号: F02M3704

    摘要: A fuel regulation apparatus of an engine for a model which is possible to regulate the flow rate of the fuel according to the rotational frequency of the engine is provided. A main body 31 of a fuel regulation apparatus 30 is provided with a fuel inlet 32, a fuel outlet 33, and an air inlet 42 to which air pressure from a crankcase is applied. The inlet 32 and the outlet 33 are connected therewith through a passage 34 having a seat face 37. A regulating valve 35 is placed in the passage 34 to close the seat face 37. A spring 38 pushes the regulating valve 35 in such a direction as to close the seat face. The other end of the regulating valve 35 is in contact with a piston 39. A position of an air inlet 42 can be adjusted by a screw 43. The spring pushes the piston 39 in such a direction as to open the seat face 37. The outlet 33 is connected to a fuel injection apparatus. The fuel injection apparatus injects the fuel into a crankcase. The piston is pushed according to air pressure in the crankcase 8 corresponding to rotational frequency and the seat face is opened. The flow rate can be controlled according to the rotational frequency of the engine. The fuel which is apt to be insufficient at the time of high speed can be increased and the fuel which is apt to be dense at the time of low speed can be throttled.

    摘要翻译: 提供了一种用于模型的发动机的燃料调节装置,其可以根据发动机的转速来调节燃料的流量。 燃料调节装置30的主体31设置有燃料入口32,燃料出口33以及来自曲轴箱的空气压力的空气入口42。 入口32和出口33通过具有座面37的通道34连接。调节阀35放置在通道34中以关闭座面37.弹簧38将调节阀35按照 关闭座位面。 调节阀35的另一端与活塞39接触。空气入口42的位置可以通过螺钉43调节。弹簧沿着打开座面37的方向推动活塞39。 出口33连接到燃料喷射装置。 燃料喷射装置将燃料喷射到曲轴箱中。 活塞按照曲轴箱8的空气压力被推压,对应于旋转频率,并且座面打开。 可以根据发动机的转速控制流量。 可以提高在高速时容易不足的燃料,并且可以节省在低速时容易致密的燃料。

    Fuel pressure control valve for engines of models
    9.
    发明授权
    Fuel pressure control valve for engines of models 失效
    型号发动机燃油压力控制阀

    公开(公告)号:US5832882A

    公开(公告)日:1998-11-10

    申请号:US917884

    申请日:1997-08-27

    申请人: Norio Matsuda

    发明人: Norio Matsuda

    摘要: Fuel to which a predetermined pressure is applied is supplied to an electronically controlled fuel injection system of a engine for models in order to improve the rotation stability during low speed operation and the response to rapid acceleration or deceleration. The pulsatory air pressure is generated in a crank chamber of a engine for models during operation. An air pressure intake guide 51 of a fuel pressure control valve 1 receives air pressure from the crank chamber. The air intake guide is provided with an excessive pressure leak valve the actuation pressure of which is adjustable. The air pressure intake guide communicates with interposition of a check valve 56 to a controlled air pressure supply passage 54 which communicates to a fuel tank. The check valve 56 supplies the positive pressure of the pulsatory air pressure from the controlled air pressure supply passage to the internal of the fuel tank. All the positive air pressure supplied to the air pressure intake guide 51 is supplied to the fuel tank when the pressure in the fuel tank is below a specified pressure. The air pressure supplied to the air pressure intake guide 51 actuates a control ball 60 of the excessive pressure leak valve 57 and is released to the outside. The check valve 56 prevents the air pressure in the fuel tank from flowing inversely.

    摘要翻译: 为了提高低速运转时的旋转稳定性和对快速加速或减速的响应,将用于模型的发动机的电子控制燃料喷射系统供给到施加有预定压力的燃料。 在操作期间用于型号的发动机的曲柄室中产生脉动空气压力。 燃料压力控制阀1的空气压力导入件51接受来自曲柄室的空气压力。 进气导管设置有过压的泄压阀,其致动压力是可调节的。 空气压力导入引导件与插入止回阀56连通到与燃料箱连通的受控空气压力供给通道54。 止回阀56将来自受控空气压力供给通道的脉动空气压力的正压提供给燃料箱的内部。 当燃料箱中的压力低于指定压力时,供给到空气压力进入引导件51的所有正气压被供给到燃料箱。 供给到空气压力导入引导件51的空气压力驱动过大的压力泄漏阀57的控制球60并释放到外部。 止回阀56防止燃料箱中的空气压力反向流动。

    Signal input system for an electronic equipment
    10.
    发明授权
    Signal input system for an electronic equipment 失效
    电子设备信号输入系统

    公开(公告)号:US5606316A

    公开(公告)日:1997-02-25

    申请号:US626945

    申请日:1996-04-03

    申请人: Norio Matsuda

    发明人: Norio Matsuda

    摘要: An electronic equipment has a stick as a movable input device provided to be manually moved. The position of the stick is detected. In accordance with the detected position, the movement of the stick is restricted within a predetermined movable range so as to be moved a plurality of predetermined areas. The area in which the stick is located is detected. In accordance with the detected area, corresponding control data stored in a memory are read out, and the electronic equipment is controlled by the read out control data.

    摘要翻译: 电子设备具有设置为手动移动的可移动输入装置的棒。 检测棒的位置。 根据检测到的位置,将棒的移动限制在预定的可移动范围内,以便移动多个预定区域。 检测棒的位置。 根据检测区域,存储在存储器中的对应的控制数据被读出,电子设备由读出的控制数据进行控制。