中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

7 records (took 0.011 seconds)

    Double resonating beam force transducer with reduced longitudinal pumping
    3.
    发明授权
    Double resonating beam force transducer with reduced longitudinal pumping 有权

    公开(公告)号：US06553834B2

    公开(公告)日：2003-04-29

    申请号：US09907729

    申请日：2001-07-17

    Applicant: Graeme A. Blake

    Inventor： Graeme A. Blake

    IPC: G01C1900

    CPC classification number: H03H9/2473 ,  G01L1/106 ,  G01P15/097

    Abstract: A resonator beam structure that, during vibration of the tines, minimizes coupling of a longitudinal motion of the tines into a support structure to which the resonator beam is attached. The resonator beam includes a pair of tines; a first base region mechanically coupling a first ends of the tines together; a second base region mechanically coupling the second ends of the tines together; a first cutout of a first predetermined geometry at a first predetermined position in a closed interior portion of the first base region; and a second cutout of a second predetermined geometry at a second predetermined position in a closed interior portion of the second base region. The invention includes a method for using finite element analysis to determine an optimum geometry and position of the cutouts.

    Electrostatically driven dual vibrating beam force transducer
    4.
    发明授权
    Electrostatically driven dual vibrating beam force transducer 失效
    静电驱动双振动梁力传感器

    公开(公告)号：US4901586A

    公开(公告)日：1990-02-20

    申请号：US316899

    申请日：1989-02-27

    Applicant: Graeme A. Blake ,  Brian L. Norling

    Inventor： Graeme A. Blake ,  Brian L. Norling

    IPC: G01L1/10 ,  G01L1/18 ,  G01P15/097 ,  G01P15/10

    CPC classification number: G01P15/097 ,  G01L1/10 ,  G01L1/183 ,  Y10S73/01

    Abstract: A dual vibrating beam force transducer having an electrostatic drive system. The transducer comprises a body having first and second generally parallel beams, coupled together at their ends. First and second electrodes are positioned adjacent to but not in contact with the respective beams. A drive circuit causes an oscillating voltage to be applied to the electrodes. The beams are thus subjected to electrostatic forces that cause the beams to oscillate in a vibration plane containing both beams. The mechanical resonance of the beams controls the oscillation frequency, such that the frequency is a function of a force exerted along the beams. An embodiment is also described in which the drive means is coupled directly to one of the beams.

    Abstract translation: 具有静电驱动系统的双振动束力传感器。 换能器包括具有第一和第二大致平行的梁的主体，它们的端部联接在一起。 第一和第二电极定位成与各个光束相邻而不与其接触。 驱动电路使振荡电压施加到电极。 因此，光束受到静电力的作用，使得光束在包含两个光束的振动平面中振荡。 光束的机械谐振控制振荡频率，使得频率是沿着光束施加的力的函数。 还描述了一种实施例，其中驱动装置直接连接到一个梁。

    Temperature transducer
    6.
    发明授权
    Temperature transducer 失效
    温度传感器

    公开(公告)号：US5135312A

    公开(公告)日：1992-08-04

    申请号：US555903

    申请日：1990-07-20

    Applicant: Graeme A. Blake

    Inventor： Graeme A. Blake

    IPC: G01K7/32

    CPC classification number: G01K7/32

    Abstract: A vibrating crystal transducer for measuring temperature including a bonding area from which three or more tines extend. The tines have a torsional mode resonant frequency that is a function of temperature. Electrodes on the transducer excite the tines into vibration so that the torsional moments of the adjacent edges of the adjacent tines are reverse symmetric. When the tines are vibrated, the reverse symmetrical vibrational moments of the individual tines cancel so that there is no torsional moment, or twisting, within the area between the points where the tines intersect, which is the area defined by the bonding area. Since the bonding area does not serve as a sink for torsional energy, torsional energy is not lost through the bonding area so that the transducer has a relatively high quality factor and torsional vibration of the transducer cannot cause the transducer to eventually work loose of a mounting pad to which it is attached.

    Abstract translation: 一种用于测量温度的振动晶体传感器，包括三个或多个尖齿延伸的接合区域。 尖齿具有作为温度的函数的扭转模式共振频率。 传感器上的电极激发尖齿振动，使相邻尖齿相邻边缘的扭转力矩反向对称。 当尖齿振动时，单个齿的反向对称振动力矩消除，使得在齿相交的点之间的区域内不存在扭转力矩或扭转，这是由接合区域限定的区域。 由于接合区域不用作扭转能量的下沉器，所以扭转能量不会通过接合区域损失，因此传感器具有较高的品质因数，并且传感器的扭转振动不能导致传感器最终松动安装 它附着的垫。

    Asymmetric flexure for pendulous accelerometer
    7.
    发明授权
    Asymmetric flexure for pendulous accelerometer 失效
    下摆加速度计的不对称弯曲

    公开(公告)号：US4944184A

    公开(公告)日：1990-07-31

    申请号：US338808

    申请日：1989-04-14

    Applicant: Graeme A. Blake ,  Brian L. Norling ,  Mitchell J. Novack

    Inventor： Graeme A. Blake ,  Brian L. Norling ,  Mitchell J. Novack

    IPC: G01P15/02 ,  G01P15/125 ,  G01P15/13

    CPC classification number: G01P15/125 ,  G01P15/132 ,  G01P2015/0828

    Abstract: An improved accelerometer of the type that includes a proof mass suspended from a support by one or more flexures, such that the proof mass can pivot with respect to the support about a hinge axis. The proof mass includes a paddle attached to the flexures, the paddle having first and second paddle surfaces. The coil is mounted on the first paddle surface, and the accelerometer includes a stator for mounting the support and for forming a magnetic circuit with the coil. The improvement comprises positioning the flexures such that a plane containing the hinge axis and the center of mass of the proof mass is parallel to one of the paddle surfaces, and closer to one paddle surface than to the other paddle surface. In a preferred arrangement, the plane containing the hinge axis and the center of mass is approximately coplanar with one of the paddle surfaces and with the flexures.

    Abstract translation: 一种改进的加速度计，其包括通过一个或多个挠曲件从支撑件悬挂的证明物质，使得证明物质可以围绕铰链轴线相对于支撑件枢转。 检测质量包括附接到挠曲件的桨叶，桨具有第一和第二桨叶表面。 线圈安装在第一桨表面上，并且加速度计包括用于安装支撑件并用于与线圈形成磁路的定子。 该改进包括定位弯曲部，使得包含铰链轴线的平面和检测质量块的质心平行于其中一个桨叶表面，并且比另一个桨叶表面更接近一个桨叶表面。 在优选的布置中，包含铰链轴线和质心的平面与桨形表面中的一个和挠曲件近似共面。

Patent Agency Ranking