Turbo-molecular pump
    11.
    发明授权
    Turbo-molecular pump 失效
    涡轮分子泵

    公开(公告)号:US06332752B2

    公开(公告)日:2001-12-25

    申请号:US09104171

    申请日:1998-06-25

    IPC分类号: F04D1904

    摘要: A turbo-molecular pump of high safety and reliability has been developed so that if an abnormal condition should develop on the rotor structure, it will not lead to damage to the stator or pump casing to cause loss of vacuum in a vacuum processing system. The turbo-molecular pump comprises a pump casing housing a stator and a rotor therein, a vane pumping section and/or a groove pumping section comprised by the stator and the rotor, and a constriction releasing structure for releasing constriction of at least a part of the stator when an abnormal torque is applied to the stator by the rotor.

    摘要翻译: 已经开发了具有高安全性和可靠性的涡轮分子泵,使得如果在转子结构上出现异常状况,则不会导致定子或泵壳的损坏,从而导致真空处理系统中的真空损失。 涡轮分子泵包括容纳定子和转子的泵壳体,由定子和转子组成的叶片泵送部分和/或槽​​泵送部分,以及用于释放至少部分的收缩部的收缩部分释放结构 当转子对定子施加异常转矩时,定子。

    Range switching device for analog to digital conversion
    12.
    发明授权
    Range switching device for analog to digital conversion 失效
    用于模数转换的量程切换装置

    公开(公告)号:US5170166A

    公开(公告)日:1992-12-08

    申请号:US618181

    申请日:1990-11-26

    IPC分类号: H03M1/18

    CPC分类号: H03M1/187

    摘要: The invented auto-ranging device has a signal measuring A/D converter, a range-switching A/D converter of a faster processing speed, a range-switching amplifier with variable amplification capabilities, and a processing controller which utilizes the variable amplification factors to alter the output signals from the switching A/D converter to generate signals appropriate for a scale range of a multi-range measuring A/D converter.

    摘要翻译: 本发明的自动测距装置具有信号测量A / D转换器,具有更快处理速度的量程切换A / D转换器,具有可变放大能力的量程切换放大器以及利用可变放大系数的处理控制器 改变来自开关A / D转换器的输出信号,以产生适合多范围测量A / D转换器的刻度范围的信号。

    TURBO VACUUM PUMP
    15.
    发明申请
    TURBO VACUUM PUMP 有权
    涡轮真空泵

    公开(公告)号:US20090246048A1

    公开(公告)日:2009-10-01

    申请号:US12410720

    申请日:2009-03-25

    IPC分类号: F04D29/056

    摘要: An oil-free turbo vacuum pump is capable of evacuating gas in a chamber from atmospheric pressure to high vacuum. The turbo vacuum pump includes a pumping section having rotor blades and stator blades which are disposed alternately in a casing, and a main shaft for supporting the rotor blades. A gas bearing is used as a bearing for supporting the main shaft in a thrust direction, spiral grooves are formed in both surfaces of a stationary part of the gas bearing, and the stationary part having the spiral grooves is placed between an upper rotating part and a lower rotating part which are fixed to the main shaft. A thrust magnetic bearing for canceling out a thrust force generated by the differential pressure between a discharge side and an intake side by an evacuation action of the pumping suction is provided.

    摘要翻译: 无油涡轮真空泵能够将室内的气体从大气压降至高真空。 涡轮真空泵包括具有交替设置在壳体中的转子叶片和定子叶片的泵送部分和用于支撑转子叶片的主轴。 气体轴承用作用于沿推力方向支撑主轴的轴承,在气体轴承的静止部分的两个表面上形成螺旋槽,并且具有螺旋槽的固定部分设置在上部旋转部分和 固定在主轴上的下部旋转部。 提供了一种推力磁轴承,其用于通过抽吸抽吸的排气作用来消除由排出侧和进气侧之间的压差产生的推力。

    Signal conversion method and signal converters
    16.
    发明授权
    Signal conversion method and signal converters 失效
    信号转换方法和信号转换器

    公开(公告)号:US06331828B1

    公开(公告)日:2001-12-18

    申请号:US09377314

    申请日:1999-08-19

    申请人: Hiroyuki Kawasaki

    发明人: Hiroyuki Kawasaki

    IPC分类号: H03M702

    摘要: Between digital data signals, which are expressed using a notation system of three digit symmetric binary numbers (named “HEN2”), and analog signals, at least one way, mutual, or other conversions are made. Three digit symmetric binary numbers (HEN2), are a combination of signals in which at least one of two adjacent digits, at any digit position of one or more digits of 2-based three digit redundant binary numbers with one signal of three digits {n, o, p} expressing a value {−1, 0, 1} as a one-digit signal, is a signal “o” expressing zero. Thus three digits {−1, 0, 1} are used instead of the two digit {0, 1} binary system used in conventional A/D or D/A converters.

    摘要翻译: 在使用三位数对称二进制数(“HEN2”)的符号系统表示的数字数据信号和模拟信号之间,进行至少一种方式,相互或其他转换。 三位数对称二进制数(HEN2)是这样的信号的组合,其中在两个三位数冗余二进制数的一个或多个位的任意数字位置处的两个相邻数字中的至少一个具有三位数{n ,o,p}表示作为一位数字信号的值{-1,0,1}是表示零的信号“o”。 因此,使用三位数{-1,0,1}代替常规A / D或D / A转换器中使用的两位数{0,1}二进制系统。

    Extendable bit
    17.
    发明授权
    Extendable bit 失效
    可扩展位

    公开(公告)号:US5881827A

    公开(公告)日:1999-03-16

    申请号:US800182

    申请日:1997-02-13

    CPC分类号: E21B7/208 E21B10/62

    摘要: Extendable bit teeth are supported by the guide grooves formed on the end face at the point of a bit body in such a manner as to be slidable. The extendable bit teeth slide along the guide grooves in an excavating direction to thereby project from the end face at the point of the bit body. The extendable bit teeth slide in an opposite direction to the excavating direction to project from the outer periphery of the point of the bit body. Since the extendable bit teeth are pressed against the ground during excavation, the extendable bit teeth projects from the outer periphery of the point of the bit body so that the bit gauge can be extended, and most of the excavation hole is excavated by the bit body.

    摘要翻译: 可扩展的钻头齿以可滑动的方式由钻头体的端部上的端面上形成的引导槽支撑。 可延伸的钻头齿沿着引导槽在挖掘方向上滑动,从而从钻头体的端部处的端面突出。 可延伸的钻头齿沿与挖掘方向相反的方向滑动,从钻头体的点的外周突出。 由于在挖掘期间可伸长的钻头齿被压靠在地面上,所以可延伸的钻头齿从钻头体的点的外周突出,使得钻头位置能够延伸,大部分挖掘孔由钻头体 。

    Air pressure impact drilling method and apparatus for same
    18.
    发明授权
    Air pressure impact drilling method and apparatus for same 失效
    气压冲击钻孔方法及装置相同

    公开(公告)号:US4790391A

    公开(公告)日:1988-12-13

    申请号:US911251

    申请日:1986-09-24

    摘要: An air-pressure impact type drilling method and an apparatus for the same in which a piston of an air hammer drill is moved up and down by pressure air to produce impact energy and the impact energy of the piston is used to give impact vibrations repetitively to a drill bit. In the air-pressure impact type drilling method and the apparatus for the same, the air hammer drill is operated by the pressure air to be supplied from the ground, the air that has already been used for operation of the air hammer drill is exhausted onto the ground through an air exhaust pipe provided in a drilling pipe and communicating with an air exhaust passage formed in the air hammer drill, and substances cut out by the air hammer drill together with muddy water within the trench are discharged by means of a reverse circulation system while drilling on through the earth. As a result of this, even if the water head pressure acts on the tip end of the drill bit, the pressure of the air for operation of the piston will not be affected by such water head pressure and thus the drilling performance of the air hammer drill will not be ill affected even under the muddy water.

    摘要翻译: 一种气压冲击式钻孔方法及其装置,其中气锤钻的活塞通过压力空气上下移动以产生冲击能量,并且使用活塞的冲击能量重复地给冲击振动 一个钻头 在气压冲击式钻孔方法及其装置中,气锤钻机由从地面供给的压力空气进行操作,已经用于气锤钻机操作的空气被排放到 通过设置在钻管中并与形成在气锤钻头中的排气通道连通的排气管的地面,并且通过气锤钻孔与沟槽内的泥水一起切出的物质通过反向循环排出 系统,同时穿过地球。 结果,即使水头压力作用在钻头的尖端上,活塞的运行空气的压力也不会受到这样的水头压力的影响,因此气锤的钻孔性能 即使在泥泞的水下,演习也不会受到影响。

    Trench excavator
    19.
    发明授权
    Trench excavator 失效
    沟槽挖掘机

    公开(公告)号:US4718504A

    公开(公告)日:1988-01-12

    申请号:US837202

    申请日:1986-03-10

    摘要: A trench excavator capable of excavating a trench of a rectangular section suitable for formation of an underground diaphragm wall. The underground diaphragm walls are now applied as underground structures replacing caissons, rigid foundations for multistory or tower like buildings, underground tanks and the like. In the trench excavator according to the invention, a pair of drum cutters and a ring cutter interposed therebetween form one unit and a plurality of such units are arranged parallel to one another, whereby an unexcavated portion produced between the drum cutters can be cut out by the ring cutter, leaving no unexcavated portion.

    摘要翻译: 一种能够挖掘适合形成地下隔膜壁的矩形截面的沟槽的挖沟机。 地下隔膜墙现在被用作地下结构,代替沉箱,多层或塔式建筑,地下储罐等的刚性基础。 在根据本发明的沟槽式挖掘机中,一对滚筒切割器和夹在其间的环形切割器形成一个单元,并且多个这样的单元彼此平行地布置,由此在滚筒切割器之间产生的无切割部分可以被切割出 环形切割机,没有没有空隙的部分。

    Process for the production of a polyamide base resin composition
    20.
    发明授权
    Process for the production of a polyamide base resin composition 失效
    制备聚酰胺基树脂组合物的方法

    公开(公告)号:US4339555A

    公开(公告)日:1982-07-13

    申请号:US200579

    申请日:1980-10-24

    CPC分类号: C08L51/06 C08L77/00

    摘要: A polyamide based resin composition is prepared mixing a resin composition with a urea compound of the formula: R.sup.2 --NHCONH--R.sup.1 --NHCONH--R.sup.3 wherein R.sup.1 is an aromatic hydrocarbon group and R.sup.2 and R.sup.3 are both aliphatic groups of 8 to 32 carbon atoms, said resin composition being prepared by melt mixing 99 to 40 parts by weight of a polyamide resin and 1 to 60 parts by weight of a modified ethylene copolymer prepared by graft copolymerizing a copolymer of ethylene and an .alpha.-olefin of at least three carbon atoms with an .alpha.,.beta.-unsaturated carboxylic acid or derivative thereof.

    摘要翻译: 制备聚酰胺基树脂组合物,将树脂组合物与下式的脲化合物:R2-NHCONH-R1-NHCONH-R3(其中R1是芳族烃基,R2和R3均为8〜32个碳原子的脂肪族基团) 所述树脂组合物通过将99至40重量份的聚酰胺树脂和1至60重量份通过将至少3个碳原子的乙烯和α-烯烃的共聚物与至少3个碳原子的共聚物接枝共聚而制备的改性乙烯共聚物 α,β-不饱和羧酸或其衍生物。