公开(公告)号：US07554042B2

公开(公告)日：2009-06-30

申请号：US11613481

申请日：2006-12-20

申请人： David L. Gregerson ,  Paul O. Detwiler ,  Harry E. Lockery

发明人： David L. Gregerson ,  Paul O. Detwiler ,  Harry E. Lockery

IPC分类号： G01G21/28

CPC分类号： G01G21/23 ,  G01G21/28

摘要： Systems and techniques for scanner scale implementation and operation using a plurality of load cells mounted in a planar arrangement. A plurality of load cells is mounted to a scanner base. The load cells are secured within a mounting chassis in such a way that the load bearing elements of the load cells extend through the protective cover. The mounting chassis and load cells may be mounted to the scanner base. A scanner top plate may be secured to the load cells such that the weight of the scanner top plate and any object placed on the scanner top plate is borne by the load bearing elements of the load cells, part of the weight being borne by the load bearing element of each load cell. Upon presentation of an object for weighing, weight signals generated by the load cells are processed to produce a weight reading for the object.

摘要翻译： 使用安装在平面布置中的多个负载传感器进行扫描仪尺度实现和操作的系统和技术。 多个称重传感器安装在扫描仪基座上。 称重传感器固定在安装底盘内，使得称重传感器的承载元件延伸穿过保护罩。 安装底盘和称重传感器可以安装到扫描仪基座。 扫描仪顶板可以固定到测力传感器，使得扫描仪顶板和放置在扫描仪顶板上的任何物体的重量由负载传感器的承载元件承担，其中一部分重量由负载承载 每个称重传感器的承载元件。 在呈现用于称重的物体时，处理由称重传感器产生的重量信号以产生对象的重量读数。

公开(公告)号：US06172309B2

公开(公告)日：2001-01-09

申请号：US09544617

申请日：2000-04-06

申请人： Harry E. Lockery

发明人： Harry E. Lockery

IPC分类号： G01L104

CPC分类号： G01G3/1402 ,  G01L1/2206 ,  G01L1/2243

摘要： The cost of machining a shear beam load cell can be greatly reduced by cutting pockets for the central web with a side cutting tool, such as a Woodruff Cutter or a Key Cutter tool, in a vertical spindle milling machine, so all machining can be done with one single setup. The thickness of a web formed by side cutting tools will increase slowly and gradually with distance from the center of the web, which means that there will be no abrupt shear stress changes near the strain gages. The disclosed shear beam load cell is accordingly not only less expensive to make, but also inherently more accurate than prior art shear beam load cells.

摘要翻译： 通过在垂直主轴铣床中使用侧切刀（例如木屑切割机或切割刀具）切割中央腹板的口袋，可以大大减少加工剪切梁称重传感器的成本，因此可以完成所有的加工 有一个单一的设置。 由侧切刀具形成的腹板的厚度将从幅材中心的距离缓慢逐渐增加，这意味着在应变计附近不会有突然的剪切应力变化。 因此，公开的剪切梁测力传感器不仅比现有技术的剪切梁称重传感器更昂贵，而且固有地更准确。

公开(公告)号：US4411327A

公开(公告)日：1983-10-25

申请号：US263505

申请日：1981-05-14

申请人： Harry E. Lockery ,  Eric Laimins

发明人： Harry E. Lockery ,  Eric Laimins

IPC分类号： G01L1/22 ,  G01G3/14 ,  G01G21/23 ,  F16C17/00

CPC分类号： G01G21/23 ,  G01G3/1402 ,  Y10S177/09

摘要： In a platform scale in which the strain gage transducer beams are preferably formed as an integral part of a platform it is important that any distortions such as horizontal or angular force components that could falsify the reading of the weight, are prevented from affecting the transducers. For this purpose, the vertical load or weight representing force components are transmitted to each strain gage transducer beam through at least two cooperating curved, preferably spherical, surfaces. One curved surface has a larger curvature than the other so that a sufficient motion in any horizontal direction is permitted. The horizontal yielding prevents the transmission of a horizontal or angular force component to the sensing strain gages of the respective transducer beam but does not adversely affect the vertical force transmission to the transducer beams.

摘要翻译： 在其中应变计传感器梁优选地形成为平台的整体部分的平台尺度中，重要的是防止任何可能伪造重量读数的水平或角力分量的失真影响换能器。 为此，表示力分量的垂直载荷或重量通过至少两个协作的弯曲的，优选球形的表面传递到每个应变计传感器束。 一个弯曲表面具有比另一个更大的曲率，使得允许在任何水平方向上的足够的运动。 水平屈服防止水平或角力分量传递到各个换能器梁的感测应变计，但不会不利地影响到换能器束的垂直力传递。

公开(公告)号：US06555767B1

公开(公告)日：2003-04-29

申请号：US09642644

申请日：2000-08-22

申请人： Harry E. Lockery ,  Robert L. Gray

发明人： Harry E. Lockery ,  Robert L. Gray

IPC分类号： G01L104

CPC分类号： G01L1/2206 ,  G01G3/1412 ,  Y10T29/49004

摘要： A low cost strain gage load cell made without compromising accuracy and stability by a composite structure using a sensing element formed of a load cell quality material, such as metal or a metal alloy, and adjoining non-sensing elements formed of a molded plastic material. Stable and secure joints between the load cell sensing element and the plastic non-sensing element of such a load cell are provided using various structures and related structural manufacturing methods. For example, non-sensing elements, such as a mounting block to mount the load cell to a base support and a load application block to receive a load platform, are formed of an injection molded plastic and sensing elements, such as first and second parallel beams of a load cell quality metal alloy, have ends embedded in the injected molded plastic non-sensing elements. The composite load cell structure is applicable to many different types of load cell designs.

摘要翻译： 低成本应变计称重传感器通过使用由诸如金属或金属合金的称重传感器质量材料形成的感测元件以及由模制塑料材料形成的邻接非感测元件的复合结构而不损害精度和稳定性。 使用各种结构和相关的结构制造方法提供了称重传感元件和这种称重传感器的塑料非传感元件之间的稳定且牢固的连接。 例如，诸如将负载传感器安装到基座支架的安装块和用于接收负载平台的负载施加块的非感测元件由注射成型的塑料和感测元件形成，诸如第一和第二平行 称重传感器质量金属合金的光束具有嵌入注射的模制塑料非感应元件中的端部。 复合称重传感器结构适用于许多不同类型的称重传感器设计。

公开(公告)号：US4261195A

公开(公告)日：1981-04-14

申请号：US13395

申请日：1979-02-21

申请人： Harry E. Lockery

发明人： Harry E. Lockery

IPC分类号： G01L1/22

CPC分类号： G01L1/225 ,  G01L1/2268

摘要： A transducer bridge circuit arrangement which may include a plurality of individual bridge circuits is improved by standardizing the source resistance and open circuit sensitivity of each bridge circuit in a group of such circuits. For this purpose a small resistor is connected in series with one or both output terminals of each individual bridge circuit, or resistors may be inserted in series with the bridge excitation terminals. Thus, the output signal sensitivity and source resistance are adjusted to a standard ratio value and the prior art adjustment for so-called corner sensitivity in electronic scales has been eliminated or at least substantially reduced where strain gauge load cells are employed in multiple transducer installations.

摘要翻译： 通过标准化这些电路组中的每个桥接电路的源电阻和开路灵敏度来改进可包括多个独立桥接电路的换能器桥电路装置。 为此，一个小电阻器与每个单独的桥接电路的一个或两个输出端串联连接，或者电阻器可以与桥式励磁端子串联插入。 因此，输出信号灵敏度和源电阻被调整到标准比值，并且在多个换能器安装中使用应变计称重传感器的情况下，已经消除了或者至少大大减少了电子秤中所谓的角灵敏度的现有技术调整。

公开(公告)号：US4237727A

公开(公告)日：1980-12-09

申请号：US34371

申请日：1979-04-30

申请人： Harry E. Lockery ,  Eric Laimins

发明人： Harry E. Lockery ,  Eric Laimins

IPC分类号： G01L1/22 ,  G01L1/26

CPC分类号： G01L1/2225 ,  G01L1/2268 ,  G01L1/26

摘要： The moment sensitivity of shear beam transducers is mechanically compensated to make such transducers relatively insensitive to load applications which are off-center relative to an optimal point of load application. The compensation is made by gradually increasing the depth of a load application hole in the transducer. The load application hole extends in the direction of a load application axis and its depth is increased until said moment sensitivity becomes substantially zero. In other words, the load sensitivity becomes substantially independent of the location of the point of load application. A further linearization of the moment sensitivity is accomplished by placing inserts into the load application hole.

摘要翻译： 剪切梁传感器的力矩灵敏度被机械补偿，使得这种传感器相对于相对于最佳载荷应用点偏心的载荷应用相对不敏感。 通过逐渐增加换能器中的载荷施加孔的深度来进行补偿。 负载施加孔沿负载施加轴线的方向延伸，并且其深度增加，直到所述力矩灵敏度变为基本为零。 换句话说，负载灵敏度基本上与负载点的位置无关。 通过将插入物放置到负载施加孔中来实现力矩灵敏度的进一步线性化。

公开(公告)号：US06504114B1

公开(公告)日：2003-01-07

申请号：US09642645

申请日：2000-08-22

申请人： Harry E. Lockery ,  Robert L. Gray

发明人： Harry E. Lockery ,  Robert L. Gray

IPC分类号： G01G308

CPC分类号： G01G3/1412 ,  G01L1/2243

摘要： A precision double bending beam load cell made at low cost by using load cell quality material in the bending beams only, while less costly material is used for end blocks to maintain the beams in a predetermined parallel relationship and to mount the load cell, provided that the joints between the beams and the end blocks are slip free. Slip free joints can be obtained by making the end blocks in the form of rods with necks press fitted into matching holes at the ends of the beams, or by laser welding or hard soldering metal end blocks to metal bending beams. Plastic end blocks can also be injected molded onto the ends of bending beams with holes and scalloped edges for the injection molded plastic to grip onto. Shrinkage or expansion of the plastic material during the curing process will then make the joints prestressed and slip free.

摘要翻译： 一种精密双重弯曲梁称重传感器，通过仅在弯曲梁中使用称重传感器质量材料，以低成本制造，而较少成本的材料用于端块以将梁保持在预定的平行关系并安装称重传感器，只要 梁和端块之间的接头是无滑动的。 可以通过将带有颈部的棒形式的端块嵌入到梁的端部的匹配孔中，或者通过激光焊接或硬焊接金属端块到金属弯曲梁来获得无滑动接头。 塑料端块也可以注塑成弯曲梁的端部，孔和扇形边缘用于注塑塑料以夹紧。 在固化过程中，塑料材料的收缩或膨胀将使接缝预应力和滑动。

公开(公告)号：US5135062A

公开(公告)日：1992-08-04

申请号：US670397

申请日：1991-03-15

申请人： Harry E. Lockery ,  Rolf P. Haggstrom

发明人： Harry E. Lockery ,  Rolf P. Haggstrom

IPC分类号： G01G3/14 ,  G01L1/22

CPC分类号： G01G3/1408 ,  G01L1/2268

摘要： A strain gage transducer system, such as a load cell based weighing system, is protected against moisture related errors by an electrically conducting guard circuit for terminals and other parts subject to wet or humid conditions. The guard circuit is connected to an electrical potential close to a potential of signal terminals in a strain gage bridge, for instance to a center tap in a power supply for the strain gage bridge.

公开(公告)号：US4979580A

公开(公告)日：1990-12-25

申请号：US419203

申请日：1989-10-10

申请人： Harry E. Lockery

发明人： Harry E. Lockery

IPC分类号： G01G3/14 ,  G01G3/142 ,  G01L1/22

CPC分类号： G01L1/2231 ,  G01G3/1402 ,  G01G3/1414 ,  G01G3/142 ,  G01L1/2262

摘要： A force or weight measuring load cell arrangement of the planar gaged plate load cell type with bending beam members is made insensitive to the point of load application by bonding strain gages alternately on the top surfaces and on the bottom surfaces of bending beam members and shunting half-bridges by pairs of substantially equal resistors to reduce the errors caused by corner loading.

摘要翻译： 通过在弯曲梁构件的顶面和底面上交替地粘接应变计，使具有弯曲梁构件的平面测厚板称重传感器型的力或测量称重传感器布置对载荷施加点不敏感，并将分流半 通过成对的基本相等的电阻器，以减少由拐角加载引起的误差。

公开(公告)号：US4556115A

公开(公告)日：1985-12-03

申请号：US505395

申请日：1983-06-17

申请人： Harry E. Lockery ,  Edward Freymiller

发明人： Harry E. Lockery ,  Edward Freymiller

IPC分类号： G01G3/142 ,  G01G3/14 ,  G01G19/52 ,  G01L1/22 ,  G01L25/00

CPC分类号： G01G3/142

摘要： The load measuring sensitivities of transducers, such as beam type transducers, or the like, are desensitized by connecting a desensitizing resistance in series with the strain gages attached to a transducer so that these desensitizing resistances become part of the respective bridge arm in which the corresponding strain gage is located. In a group of four transducers, each carrying, for example two strain gages, the transducer which has the lowest sensitivity is ascertained. Thereafter, the sensitivities of the other three transducers are reduced by the desensitizing resistors connected directly in series with the strain gages in the other three transducers so that all have substantially the same sensitivity as the mentioned lowest initial sensitivity in the group of transducers. Any influences of these desensitizing resistors from one bridge arm to another bridge arm are considered in the derivation of the correct desensitizing resistances. Thereafter, a further sensitivity equalization may be achieved by mechanically increasing the sensitivity of those transducers in the group still having a lower sensitivity than the lowest sensitivity transducer in the group. Such mechanical sensitivity increase involves removing material from the sensing portion of a transducer for example by filing or grinding until all transducers of a group have the same sensitivity within an acceptable tolerance range, for example, 0.02%.

摘要翻译： 通过将连接到换能器上的应变计串联的脱敏电阻连接在一起，使得这些脱敏电阻成为相应的桥臂的一部分，使得换能器（例如光束式换能器等）的负载测量灵敏度脱敏， 应变计位于。 在一组四个换能器中，每个传感器携带例如两个应变计，具有最低灵敏度的换能器。 此后，通过直接与其他三个换能器中的应变计串联连接的脱敏电阻来降低其它三个换能器的灵敏度，使得所有传感器都具有与所述组中的所述最低初始灵敏度基本上相同的灵敏度。 在正确的抗敏电阻的推导中考虑了这些从一个桥臂到另一个桥臂的脱敏电阻器的任何影响。 此后，可以通过机械地增加仍然具有比组中的最低灵敏度传感器更低的灵敏度的组中的那些换能器的灵敏度来实现进一步的灵敏度均衡。 这种机械灵敏度增加包括例如通过锉磨或研磨从传感器的感测部分移除材料，直到组的所有换能器在可接受的公差范围内具有相同的灵敏度，例如0.02％。