利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

20 条记录 (耗时 0.011 秒)

    Method and apparatus of modulated-temperature thermogravimetry
    2.
    发明授权
    Method and apparatus of modulated-temperature thermogravimetry 失效
    调制温度热重法的方法和装置

    公开(公告)号：US6113261A

    公开(公告)日：2000-09-05

    申请号：US105238

    申请日：1998-06-26

    申请人： Roger L. Blaine

    发明人： Roger L. Blaine

    IPC分类号： G01G1/22 ,  G01N5/04 ,  G01G23/00 ,  G01N25/00

    CPC分类号： G01G1/22 ,  G01N25/4833 ,  G01N5/04

    摘要： A method for controlling a thermogravimetry experiment and for quantitatively determining kinetic constants for decomposition or volatilization reactions using periodic forcing (modulated) temperature functions. A temperature program having a linear part and a periodically varying part superimposed thereon is applied to a sample in a thermogravimetric analyzer. The resulting mass signal is deconvoluted, or separated, into one or more deconvoluted signals.

    摘要翻译： 一种控制热重分析实验的方法，并使用周期性强制（调制）温度函数定量测定分解或挥发反应的动力学常数。 将具有直线部分和周期性变化部分重叠的温度程序应用于热重分析仪中的样品。 所得到的质量信号被解卷积或分离成一个或多个解卷积的信号。

    Portable jeweler{3 s balance
    4.
    发明授权
    Portable jeweler{3 s balance 失效
    便携式珠宝商{3 s余额

    公开(公告)号：US3882947A

    公开(公告)日：1975-05-13

    申请号：US44167274

    申请日：1974-02-11

    申请人： METTLER INSTRUMENTE AG

    发明人： APPIUS MAX KARL ,  AST ADOLF

    IPC分类号： G01G1/22 ,  G01G1/40 ,  G01G21/28 ,  G01G21/30 ,  G01G23/32

    CPC分类号： G01G1/40 ,  G01G21/30

    摘要： The operating elements of a portable, top-loading inclination balance are mostly mounted in a housing from which a pan carrier and the weighing pan project. The weight of an object on the pan is projected on a screen visible from outside the housing. A cover pivoted to the housing may be swung wide for access to the weighing pan, swung closer to the housing into an intermediate position for protecting the pan against the influence of air movement, or swung into a closed position in which it envelops the pan carrier and pan. The light source of the projecting system is energized only in the intermediate cover position, and the balance beam and pan carrier assembly are lifted from associated knife edge bearings and clamped against the housing or against the cover in response to movement of the cover into the closed position in which it is locked by a manually releasable latch. The weighing range of the balance is expanded by substitution weights which may be suspended either from the pan carrier or from pins on the housing immediately adjacent the projection screen and carry marks indicative of their weight.

    摘要翻译： 便携式，顶部装载倾斜平衡的操作元件主要安装在壳体中，托盘托架和称重盘从该壳体中投影。 盘上的物体的重量被投影在从外壳外部可见的屏幕上。 枢转到壳体的盖子可以摆动宽以进入称重盘，更靠近壳体摆动到中间位置，用于保护盘免受空气运动的影响，或摆动到关闭位置，在该位置，其包围盘托架 和锅。 投影系统的光源仅在中间盖位置被激活，并且平衡梁和盘托架组件从相关联的刀刃轴承提升并且响应于盖的移动而被夹紧到壳体或盖子上 通过手动释放的闩锁锁定的位置。 天平的称重范围由替代重量扩大，替代重量可能从托盘托架或紧邻投影屏幕的外壳上的销悬挂，并带有表示其重量的标记。

    Precision laboratory balance
    5.
    发明授权
    Precision laboratory balance 失效
    精密实验室平衡

    公开(公告)号：US3840081A

    公开(公告)日：1974-10-08

    申请号：US38232673

    申请日：1973-07-25

    申请人： TORSION BALANCE CO

    发明人： BRANN R

    IPC分类号： G01G1/24 ,  G01G21/24 ,  G01G23/32 ,  G01G1/22

    CPC分类号： G01G1/246 ,  G01G21/245 ,  G01G23/32 ,  Y10S177/09

    摘要： A laboratory balance as particularly disclosed herein has a balance beam which is supported for rotational movement on the frame of the balance by means of a central pivot which has high torsional rigidity transverse to the pivot axis and preferably is either a knife and vee bearing or a crossed spring or flexure pivot. One end of the beam is arranged so that beam deflection due to a weight placed on a balance pan associated with the other end of the beam can be measured. The balance pan is carried by a generally vertical member or truss which is suspended from the other end of the balance beam on a second pivot which also has high torsional rigidity transverse to the pivot axis and is preferably a knife and vee pivot or a flexure pivot. The balance beam and the truss together with the frame of the balance and a generally horizontal member or steering link which is pivotally connected at opposite ends to the frame and the truss make up a parallelogrammatic linkage by way of the four pivots. At least one of the pivots associated with the generally horizontal steering link is constituted by an elastic torsion member which is held between two arms of the truss or frame of the balance, the steering link being clamped to the torsion member between said arms. The purpose of the torsion member is that, being of a light construction relative to the two pivots associated with the beam of balance, it has lower torsional ridigity transverse to its pivoting axis than the pivots connected to the beam. Thus, to a significant degree, it constitutes a self-aligning facility and permits the steering link to lie in or move into different vertical planes from the vertical plane in which the balance beam moves without detriment to the performance of the balance.

    摘要翻译： 本文特别公开的实验室平衡具有平衡梁，该平衡梁通过具有横向于枢转轴线的高扭转刚度的中心枢轴支撑在平衡架上的旋转运动，并且优选地是刀和轴承座或 交叉的弹簧或弯曲枢轴。 光束的一端被布置成使得能够测量由于放置在与光束的另一端相关联的平衡盘上的重量而产生的光束偏转。 平衡盘由大体垂直的构件或桁架承载，该构件或桁架从平衡梁的另一端悬挂在第二枢轴上，第二枢轴也具有横向于枢转轴线的高扭转刚度，并且优选地是刀和砧座枢轴或弯曲枢轴 。 平衡梁和桁架与平衡架的框架以及在相对端枢转地连接到框架的大致水平的构件或转向连杆，并且桁架通过四个枢轴组成平行四边形连杆。 与大致水平的转向连杆相关联的枢轴中的至少一个由弹性扭转构件构成，弹性扭转构件保持在平衡架的桁架或框架的两个臂之间，转向连杆被夹持在所述臂之间的扭转构件。 扭转构件的目的在于，相对于与平衡梁相关联的两个枢轴具有较轻的结构，与枢转轴相比，它具有与其枢轴相比横向于其枢轴的较小的扭转力。 因此，在很大程度上，它构成自对准设备，并且允许转向连杆位于平衡梁移动的垂直平面中或者移动到与垂直平面不同的垂直平面中，而不损害天平的性能。

    Four-pan algebra balance having an imbalance correction mechanism
    6.
    发明授权
    Four-pan algebra balance having an imbalance correction mechanism 失效
    四平面代数平衡具有不平衡校正机制

    公开(公告)号：US5927989A

    公开(公告)日：1999-07-27

    申请号：US909346

    申请日：1997-08-11

    申请人： George Kung ,  Ken Vicchiollo

    发明人： George Kung ,  Ken Vicchiollo

    IPC分类号： G01G1/22 ,  G09B23/02 ,  G09B1/00

    CPC分类号： G01G1/22 ,  G09B23/02

    摘要： A four-pan algebra balance includes an imbalance correction mechanism for maintaining a balance beam in a horizontal equilibrium position unless the imbalance between the two sides of the device exceeds a predetermined amount. The balance includes a base, an upright stand mounted to, and extending substantially vertically from the base, a crossbar mounted to an upper end of the stand so as to extend substantially horizontally and the balance beam pivotally coupled to a midpoint of the stand. A first weight receptacle subassembly including two pans is coupled to a first end of the crossbar and a first end of the balance beam and a second weight receptacle subassembly including two pans is coupled to a second end of the crossbar and a second end of the balance beam. A visual indicator provides an indication of the relative equality of the first and second weight receptacle subassemblies. Various embodiments for the imbalance correction mechanism are disclosed, including an elastic strip, band, or spring coupled between the balance beam and the stand and a bolt coupled to the balance beam and adapted to receive a nut.

    摘要翻译： 四盘代数平衡包括用于将平衡光束保持在水平平衡位置的不平衡校正机构，除非装置的两侧之间的不平衡超过预定量。 平衡装置包括底座，立柱，从基座安装到基座上并从基座垂直延伸;横杆，安装到支架的上端，以便基本上水平地延伸，平衡梁枢转地联接到支架的中点。 包括两个盘的第一重量容器子组件联接到横杆的第一端，并且平衡梁的第一端和包括两个盘的第二重量容器子组件联接到横杆的第二端，并且平衡器的第二端 光束。 视觉指示器提供了第一和第二重量容器子组件相对相等的指示。 公开了用于不平衡校正机构的各种实施例，包括耦合在平衡梁和支架之间的弹性带，带或弹簧和联接到平衡梁并适于接收螺母的螺栓。

    Vertically stable friction-free microbalance
    7.
    发明授权
    Vertically stable friction-free microbalance 失效
    垂直稳定的无摩擦微量天平

    公开(公告)号：US4625819A

    公开(公告)日：1986-12-02

    申请号：US780067

    申请日：1985-09-25

    申请人： Michael O'Neill

    发明人： Michael O'Neill

    IPC分类号： G01G1/22 ,  G01G7/04 ,  G01G21/02 ,  G01G7/00 ,  G01G21/28

    CPC分类号： G01G21/022 ,  G01G1/22 ,  G01G7/04 ,  Y10S177/06 ,  Y10S177/09

    摘要： The microbalance includes a mounting having two vertically aligned elongated flexible metal tension members, the upper and lower ends of the tension members being attached to a fixed support. The attachment of one end of each of the tension members to the fixed support is carried out by a resilient tension means. A pivot crossbeam is fixedly attached to the balance beam, and the ends of the pivot beam are fixedly attached respectively to the tension members at points intermediate to the ends. Deflection of the microbalance beam is accommodated by flexure of the metal tension members.

    摘要翻译： 微量天平包括具有两个垂直排列的细长柔性金属拉紧构件的安装件，张紧构件的上端和下端附接到固定支撑件。 每个张力构件的一端附接到固定支撑件通过弹性张紧装置来实现。 枢轴横梁固定地连接到平衡梁上，枢转梁的端部分别固定地连接到位于两端的点处的张力构件上。 微型平衡梁的挠曲由金属张紧构件的挠曲来适应。

    High accuracy measuring device for measuring large mass
    10.
    发明授权
    High accuracy measuring device for measuring large mass 有权

    公开(公告)号：US10378950B2

    公开(公告)日：2019-08-13

    申请号：US15534085

    申请日：2016-10-12

    申请人： National Institute of Metrology

    发明人： Jian Wang ,  Changqing Cai ,  Xiaoping Ren ,  Tao Li ,  Manhong Hu ,  Xiaolei Wang ,  Honglei Ji ,  Xiang Wang ,  Ping Chen

    IPC分类号： G01G21/04 ,  G01G1/22 ,  G01G1/26 ,  G01G23/01

    摘要： The invention relates to a measuring device for measuring the mass of a weight, comprising a main frame, a main beam supported on the main frame and comprising a central knife and two side knives parallel with the central knife; a balancing system loaded on one end of the main beam and comprising a set of counterweights; a weighting system loaded on the other end of the main beam; a weight transportation system capable of transporting and loading a standard weight or a test weight into the weighting system and capable of unloading and transporting them away from the weighting system; and a control system. The central knife and the two side knives are made from metal with a high temperature-cryogenic cycling process. The central knife and the two side knives are configured to be adjusted in parallelism with a three-coordinates measuring machine. The control system is adapted to control the balancing system and the weighting system to synchronously load or unload the balancing system and the weighting system.