Sintered silicon nitride products
    1.
    发明授权
    Sintered silicon nitride products 失效
    烧结氮化硅产品

    公开(公告)号:US5032554A

    公开(公告)日:1991-07-16

    申请号:US450890

    申请日:1989-12-14

    IPC分类号: C04B35/593

    CPC分类号: C04B35/5935

    摘要: A sintered silicon nitride product comprises from 72 to 98% by weight of silicon nitride, from 1 to 8% by weight of vanadium pentoxide, and from 1 to 20% by weight of one or more oxides of rare earth elements. The vanadium pentoxide and the oxide of rare earth elements accelerate the densification of the sintered product, and provide high strength at high temperature as well as excellent oxidation resistance to the sintered product.

    摘要翻译: 烧结氮化硅产品包含72至98重量%的氮化硅,1至8重量%的五氧化二钒和1至20重量%的一种或多种稀土元素氧化物。 五氧化二钒和稀土元素的氧化物加速烧结产品的致密化,并且在高温下提供高强度以及对烧结产品具有优异的抗氧化性。

    Silicon nitride sintered body and method for producing same
    2.
    发明授权
    Silicon nitride sintered body and method for producing same 失效
    氮化硅烧结体及其制造方法

    公开(公告)号:US5114888A

    公开(公告)日:1992-05-19

    申请号:US612691

    申请日:1990-11-15

    IPC分类号: C04B35/593

    CPC分类号: C04B35/5935

    摘要: Silicon nitride base sintered body consists of: 1 to 20 wt % (as oxides) of at least one of rare earth elements; 0.5 to 8 wt % of V (as V.sub.2 O.sub.5); 0.5 to 8 wt % (as oxides) of at least one of Nb, Ta, Cr, Mo and W; sum of the Va and VIa group elements according to the Periodic Table of the International Version (as oxides) being 1 to 10 wt %; and balance silicon nitride. It has high strength of 690-880 MPa (70-90 kgf/mm.sup.2) and high oxidation resistance both at 1350.degree. C. It is produced by 2 stage gas-pressure sintering in pressurized N.sub.2 atmosphere, primarily at 1700.degree.-1900.degree. C. at 1 MPa (10 atm) or less and secondarily at 1600.degree.-1900 C. at 10 MPa (100 atm) or above.

    摘要翻译: 氮化硅基烧结体由以下组成:1〜20重量%(作为氧化物)的稀土元素中的至少一种; 0.5至8重量%的V(作为V 2 O 5); Nb,Ta,Cr,Mo和W中的至少一种为0.5〜8重量%(作为氧化物) 根据国际版本(作为氧化物)的周期表,Va和VIa族元素的总和为1至10wt%; 并平衡氮化硅。 它在1350℃下具有690-880MPa(70-90kgf / mm2)的高强度和高抗氧化性。它在加压N 2气氛中,主要在1700°-1900℃下通过2级气压烧结 在10MPa(100大气压)以上,在1MPa(10atm)以下,二次在1600〜1900℃。

    Sintered body of silicon nitride and its manufacture
    3.
    发明授权
    Sintered body of silicon nitride and its manufacture 失效
    氮化硅烧结体及其制造

    公开(公告)号:US5045513A

    公开(公告)日:1991-09-03

    申请号:US393726

    申请日:1989-08-15

    IPC分类号: C04B35/584 C04B35/593

    CPC分类号: C04B35/5935

    摘要: A sintered body of silicon nitride with high density, strength, toughness, and hardness, which can be used for a structural part of an engine, etc. The sintered body of the invention includes 80 to 94 wt % Si.sub.3 N.sub.4, 2 to 10 wt % Mg compound calculated in MgO equivlent, and 2 to 10 wt % Y compound calculated in Y.sub.2 O.sub.3 equivalent. The Si.sub.3 N.sub.4 contains 5 to 40% .alpha.-phase. The sintered body is manufactured in the following steps: (a) mixing powdery Si.sub.3 N.sub.4 with a Mg compound and a Y compound in the above proportions, and then molding the mixture in which the Si.sub.3 N.sub.4 powder contains 80% or more .alpha.-phase and its grains are 1 .mu.m or less in diameter on average; (b) performing primary sintering at 1,600.degree. C. or less in an atmospher of nitrogen or of an inert gas at 20 atm or less; and (c) performing secondary sintering at 1,400.degree. to 1,600.degree. C. in an atmosphere of nitrogen or of an inert gas at 300 atm or more.

    摘要翻译: 具有高密度,强度,韧性和硬度的氮化硅烧结体,其可用于发动机的结构部件等。本发明的烧结体包含80〜94重量%的Si 3 N 4,2〜10重量% 镁化合物按MgO计算,和2〜10重量%的Y化合物按Y2O3当量计算。 Si3N4含有5〜40%的α-相。 该烧结体按以下步骤制造:(a)以上述比例混合粉末状Si 3 N 4与Mg化合物和Y化合物,然后将其中Si 3 N 4粉末含有80%以上的α-相及其晶粒的混合物 平均直径1米以下; (b)在大气压的氮气或20atm以下的惰性气体中,在1600℃以下进行初次烧结; 和(c)在氮气气氛中或在大气压为300atm以上的惰性气体中,在1400℃〜1600℃进行二次烧结。

    Apparatus and printing system for developing lithographic plate for
printing and measuring its image area rates
    4.
    发明授权
    Apparatus and printing system for developing lithographic plate for printing and measuring its image area rates 失效
    用于显影平板印刷和测量其图像面积率的装置和打印系统

    公开(公告)号:US5058500A

    公开(公告)日:1991-10-22

    申请号:US323849

    申请日:1989-03-15

    申请人: Kenichi Mizuno

    发明人: Kenichi Mizuno

    IPC分类号: B41F33/00 G03F7/30

    CPC分类号: G03F7/30 B41F33/00 Y10S101/46

    摘要: On a lithographic plate for printing, there is provided an identification mark which indicates for which color the lithographic plate is and in which printing press the lithographic plate is to be used. The identification mark of the lithographic plate is simultaneously recorded when image area rates of the lithographic plate are measured. When the measured lithographic plate is mounted in the printing press, the data of image area rates which have already been measured and recorded are read utilizing the result of reading the identification mark. The data are transmitted to the printing press and used for control of the ink supply amount of the printing press. In order to carry the lithographic plate keeping a flat state, there is provided a difference between air pressure acted upon one surface and another surface of the lithographic plate. A locating apparatus is also used so that the lithographic plate is set at a correct measuring position in order to measure image rates of the lithographic plate. An image rate can be thereby correctly measured for each portion of the lithographic plate.

    摘要翻译: 在用于印刷的平版印刷板上,提供了一种识别标记,其表示平版印刷板为哪种颜色,在哪个印刷机中使用平版印刷板。 当测量平版印刷版的图像面积率时,同时记录平版印刷版的识别标记。 当测量的平版印刷板安装在印刷机中时,利用读取识别标记的结果读取已测量和记录的图像面积率的数据。 数据被传送到印刷机并用于控制印刷机的供墨量。 为了携带保持平坦状态的平版印刷板,提供了作用于一个表面的空气压力与平版印刷版的另一个表面之间的差异。 还使用定位装置,使得平版印刷板被设置在正确的测量位置,以便测量平版印刷版的图像速率。 因此,可以正确地测量平版印刷版的每个部分的图像速率。

    Spread spectrum communication system
    5.
    发明授权
    Spread spectrum communication system 失效
    扩频通信系统

    公开(公告)号:US4977578A

    公开(公告)日:1990-12-11

    申请号:US313259

    申请日:1989-02-21

    IPC分类号: H04B1/707 H04J13/00 H04J13/10

    摘要: A spread spectrum communication system having a modulation unit for modulating and spreading an information signal by one or more of carrier signals and a spread code and transmitting it as a radio wave, and a demodulation unit for despreading and demodulating a received radio wave to pick up the information signal. The modulation unit includes a synthesizing and modulating unit for synthesizing a first primary modulated signal obtained by modulating a first carrier by the information signal and a second primary modulation signal obtained by modulating a second carrier, and a spectrum spreading unit for spreading the synthesized first and second primary modulation signals with a spread code to generate a spread spectrum signal containing first and second spread signal components. The demodulation unit includes a separation unit for separating a received spread spectrum signal into the first and second spread signals, a spread signal reproduction unit for reproducing the spread code on the separated first and second spread signal component, and a despreading unit for despreading the separated first spread signal component and reproduced spread code to reproduce the information signal.

    摘要翻译: 一种扩频通信系统,具有用于通过载波信号和扩展码中的一个或多个来调制和扩展信息信号并将其作为无线电波发送的调制单元,以及用于解扩和解调所接收的无线电波的解调单元 信息信号。 调制单元包括:合成和调制单元,用于合成通过信息信号调制第一载波获得的第一初级调制信号和通过调制第二载波获得的第二一次调制信号;以及频谱扩展单元,用于扩展合成的第一和 具有扩展码的第二初级调制信号,以产生包含第一和第二扩展信号分量的扩频信号。 解调单元包括分离单元,用于将接收的扩频信号分离成第一和第二扩展信号;扩展信号再现单元,用于在分离的第一和第二扩展信号分量上再现扩展码;解扩单元,用于解扩分离的 第一扩展信号分量和再现扩展码以再现信息信号。

    Horizontal rotary hook for sewing machine
    7.
    发明授权
    Horizontal rotary hook for sewing machine 有权
    卧式旋转钩缝纫机

    公开(公告)号:US07171914B2

    公开(公告)日:2007-02-06

    申请号:US11230522

    申请日:2005-09-21

    IPC分类号: D05B57/26

    CPC分类号: D05B57/20 D05B57/143

    摘要: A horizontal rotary hook of a sewing machine includes an inner rotary hook made of synthetic resin and housing a bobbin, an outer rotary hook made of synthetic resin and housing the inner rotary hook and rotated in a predetermined direction, an adsorption plate made of a magnetic material and mounted on one of an outer surface of a bottom wall of the inner rotary hook and an inner surface of a bottom wall of the outer rotary hook, a magnet piece formed as a thin plate and mounted in the other of the outer surface of the bottom wall of the inner rotary hook and the inner surface of the bottom wall of the outer rotary hook, and a yoke member made of a magnetic material and housing the magnet piece integrally formed with a bottom wall contacting the magnet piece and a wall surrounding an outer circumferential side of the magnet piece. The yoke member is mounted on the other of the outer surface of the bottom wall of the inner rotary hook and the inner surface of the bottom wall of the outer rotary hook.

    摘要翻译: 缝纫机的水平旋梭包括由合成树脂制成的内旋转钩,并容纳绕线筒,由合成树脂制成的外旋梭,并容纳内旋转钩并沿预定方向旋转,由磁性制成的吸附板 材料,并且安装在内旋转钩的底壁的外表面和外旋钩的底壁的内表面之间,形成为薄板的磁片,并安装在外旋转钩 内旋转钩的底壁和外旋转钩的底壁的内表面,以及由磁性材料制成的轭构件,并且容纳与接触磁片的底壁一体形成的磁体片和周围的壁 磁片的外周侧。 轭构件安装在内旋转钩的底壁的外表面和外旋钩的底壁的内表面中的另一个上。

    Duplex data processing system with programmable bus configuration
    8.
    发明授权
    Duplex data processing system with programmable bus configuration 失效
    具有可编程总线配置的双工数据处理系统

    公开(公告)号:US4975838A

    公开(公告)日:1990-12-04

    申请号:US36509

    申请日:1987-04-09

    摘要: A duplex data processing system includes two processors each provided with a bus connecting unit which disconnects the associated CPU bus from the cross connection bus in a separate mode or connects the CPU bus to the cross connection bus in a duplex mode. The system operates with a logically unified CPU bus through the connection of the internal CPU buses by the two bus connecting units in both processors.

    摘要翻译: 双工数据处理系统包括两个处理器,每个处理器具有总线连接单元,该总线连接单元以相互独立的模式将相关的CPU总线与交叉连接总线断开连接,或者以双工模式将CPU总线连接到交叉连接总线。 该系统通过两个处理器中的两个总线连接单元连接内部CPU总线,通过逻辑统一的CPU总线进行操作。

    Polycarbonate polymer from tetra arylene triphenol
    9.
    发明授权
    Polycarbonate polymer from tetra arylene triphenol 失效
    来自四亚芳基三酚的聚碳酸酯聚合物

    公开(公告)号:US4894432A

    公开(公告)日:1990-01-16

    申请号:US227773

    申请日:1988-08-03

    IPC分类号: C07C39/15 C07C43/23

    CPC分类号: C07C43/23 C07C39/15

    摘要: A triphenol type compound represented by the following formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 independently represent hydrogen, a halogen, a C.sub.1 -C.sub.5 alkyl group or a C.sub.1 -C.sub.5 alkoxy group.The triphenol type compound can be used, as a branching agent, for the production of a polycarbonate comprising (A) a carbonic acid component unit, (B) a divalent phenol component unit, and (C) a triphenol type compound component unit derived from the above-mentioned triphenol type compound. The triphenol type compound unit (C) is used in an amount of 0.01 to 10 mole %, based on the divalent phenol component unit (B) and the intrinsic viscosity [.eta.], determined at 25.degree. C. in methylene chloride, of the polycarbonate is 0.4 to 1.0 dl/g and the glass transition temperature (Tg), determined by a differential scanning type calorimeter is 150.degree. C. to 300.degree. C.

    Triphenol compound
    10.
    发明授权
    Triphenol compound 失效
    三酚化合物

    公开(公告)号:US4778936A

    公开(公告)日:1988-10-18

    申请号:US916099

    申请日:1986-10-07

    CPC分类号: C07C43/23 C07C39/15

    摘要: A triphenol type compound represented by the following formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 independently represent hydrogen, a halogen, a C.sub.1 -C.sub.5 alkyl group or a C.sub.1 -C.sub.5 alkoxy group.The triphenol type compound can be used, as a branching agent for the production of a polycarbonate comprising (A) a carbonic acid component unit, (B) a divalent phenol component unit, and (C) a tripenol type compound component unit derived from the above-mentioned triphenol type compound. The triphenol type compound unit (C) is used in an amount of 0.01 to 10 mole %, based on the divalent phenol component unit (B) and the intrinsic viscosity [.eta.], determined at 25.degree. C. in methylene chloride, of the polycarbonate is 0.4 to 1.0 dl/g and the glass transition temperature (Tg), determined by a differential scanning type calorimeter is 150.degree. C. to 300.degree. C.

    摘要翻译: 由下式表示的三酚型化合物:其中R 1,R 2,R 3,R 4,R 5和R 6独立地表示氢,卤素,C 1 -C 5烷基或C 1 -C 5烷氧基。 三酚类化合物可用作生产聚碳酸酯的支化剂,其包含(A)碳酸组分单元,(B)二元酚组分单元,和(C)衍生自 上述三酚型化合物。 基于二元酚组分单元(B)和在二氯甲烷中在25℃下测定的特性粘度η,三酚类化合物单元(C)的使用量为0.01至10摩尔% 聚碳酸酯为0.4〜1.0dl / g,由差示扫描型量热计测定的玻璃化转变温度(Tg)为150〜300℃。