Initiatorless Electric Detonator
    1.
    发明申请
    Initiatorless Electric Detonator 审中-公开
    无引擎电雷管

    公开(公告)号:US20080190316A1

    公开(公告)日:2008-08-14

    申请号:US11718942

    申请日:2005-11-08

    IPC分类号: F42B3/10

    CPC分类号: F42B3/13 C06C7/00

    摘要: The present invention relates to an electric detonator containing no primary charge or igniting charge, having a simple structure, and capable of directly igniting a base charge of secondary explosive. A detonator of the present invention includes a cylindrical tube closed at one end, a base charge contained in the tube near the closed end thereof, and an ignition device inserted from an open end of the tube and accommodated near the open end. The ignition device is a semiconductor bridge device including a laminate layer and electrode pads. The laminate layer includes layers of a reactive metal and a reactive insulator. The base charge is, for example, pentaerythritol tetranitrate.

    摘要翻译: 本发明涉及一种不含主要电荷或点燃电荷的电雷管,结构简单,能够直接点燃次级炸药的基础电荷。 本发明的雷管包括在一端封闭的圆柱形管,其封闭端附近容纳在管中的基底电荷,以及从开口端插入并容纳在开口端附近的点火装置。 点火装置是包括层压层和电极焊盘的半导体桥接器件。 层压层包括反应性金属和反应性绝缘体的层。 碱性电荷是例如季戊四醇四硝酸酯。

    Process for producing electromagnetic-wave absorber
    3.
    发明授权
    Process for producing electromagnetic-wave absorber 失效
    电磁波吸收体的制造方法

    公开(公告)号:US06830783B2

    公开(公告)日:2004-12-14

    申请号:US10397294

    申请日:2003-03-27

    IPC分类号: B05D104

    摘要: An electromagnetic-wave absorber comprising a base material and an electromagnetic-wave absorption layer provided on the base material. The electromagnetic-wave absorption layer contains at least i) a polymeric material having a glass transition temperature (Tg) of from −15° C. to 110° C. and a number-average molecular weight (Mn) of from 3,000 to 1,000,000 and ii) an inorganic material. Also provided is a process for producing the absorber.

    摘要翻译: 一种包括基材的电磁波吸收体和设置在基材上的电磁波吸收层。 电磁波吸收层至少包含i)玻璃化转变温度(Tg)为-15℃至110℃,数均分子量(Mn)为3,000至1,000,000的聚合材料,以及 ii)无机材料。 还提供了制造吸收体的方法。

    Stereo loudspeaker system with tweeters mounted on rotatable enlongated
arms
    4.
    发明授权
    Stereo loudspeaker system with tweeters mounted on rotatable enlongated arms 失效
    立体声扬声器系统,高音扬声器安装在可旋转的扩张臂上

    公开(公告)号:US5802194A

    公开(公告)日:1998-09-01

    申请号:US914497

    申请日:1997-08-19

    IPC分类号: H04R5/02 H04S1/00 H04R25/00

    摘要: A speaker system has a first baffle (2) supporting a first speaker unit for producing sounds in a first frequency range (low frequencies), at least one second baffle (27L), (27R) supporting a second speaker unit for producing sounds in a second frequency range which is higher than the first frequency range (middle and/or high frequencies), the second baffles (27L), (27R) being smaller than the first baffles (2). The second baffle (27L), (27R) are spaced a predetermined distance from the first baffle (2). The speaker system has a reduced baffle effect, and increases direct sounds radiated directly from the speaker units, as compared with indirect sounds radiated backwards from a baffle, thereby improving frequency characteristics in the middle frequencies and providing excellent sound image localization.

    摘要翻译: 扬声器系统具有支撑第一扬声器单元的第一挡板(2),用于在第一频率范围(低频)中产生声音,至少一个第二挡板(27L),(27R)支撑用于产生声音的第二扬声器单元 第二频率范围比第一频率范围(中频和/或高频)高,第二挡板(27L),(27R)小于第一挡板(2)。 第二挡板(27L)(27R)与第一挡板(2)隔开预定的距离。 与从挡板向后辐射的间接声音相比,扬声器系统具有减小的挡板效果,并且增加从扬声器单元直接辐射的直接声音,从而改善中频频率特性并提供优异的声像定位。

    Oxide ceramic fiber/oxide ceramic composite material and process for production thereof
    5.
    发明授权
    Oxide ceramic fiber/oxide ceramic composite material and process for production thereof 失效
    氧化陶瓷纤维/氧化物陶瓷复合材料及其生产方法

    公开(公告)号:US06624105B2

    公开(公告)日:2003-09-23

    申请号:US09838092

    申请日:2001-04-19

    IPC分类号: C04B3580

    摘要: The present invention discloses an oxide ceramic fiber/oxide ceramic composite material comprising primary composite materials each consisting of (a) an assembly of ceramic fibers composed mainly of a metal oxide and (b) a metal oxide ceramic which includes the ceramic fiber assembly (a) therein, the metal oxide of the ceramic (b) being different from the main component metal oxide of the ceramic fiber assembly (a) and the amount of the metal oxide ceramic (b) being 1 to 85% by weight relative to the weight of the ceramic fiber assembly (a), and a metal oxide ceramic which is a matrix for the primary composite materials and which includes the primary composite materials therein, the metal oxide of the ceramic being the same as or different from the main component metal oxide of the ceramic fiber assembly (a); and a process for producing thereof.

    摘要翻译: 本发明公开了一种氧化物陶瓷纤维/氧化物陶瓷复合材料,其包含主要复合材料,每种复合材料由(a)主要由金属氧化物组成的陶瓷纤维的组件和(b)包含陶瓷纤维组件的金属氧化物陶瓷 )中,陶瓷(b)的金属氧化物与陶瓷纤维集合体(a)的主要成分金属氧化物不同,金属氧化物陶瓷(b)的量相对于重量为1〜85重量% 的陶瓷纤维集合体(a)和作为主复合材料的基体的金属氧化物陶瓷,其中包含其中的主要复合材料,所述陶瓷的金属氧化物与主要成分金属氧化物相同或不同 的陶瓷纤维组件(a); 及其制造方法。