公开(公告)号：US4411328A

公开(公告)日：1983-10-25

申请号：US361310

申请日：1982-03-24

申请人： David W. Hubbard

发明人： David W. Hubbard

IPC分类号： G01G1/29

CPC分类号： G01G1/29

摘要： A weighing device is disclosed which comprises a frame, a pan element for supporting a load to be weighed, a channel member connected to the pan for retaining a plurality of weight elements in a vertically movable manner, a motor supported within the frame and a shaft member operatively connected to and extending from the motor, the shaft member including a spring for supporting the pan element. A plurality of collapsible support members are secured at one end thereof to the frame and each have at their opposite ends a device that is adapted to receive and lift one of the weight elements when the support member is in an extended and non-collapsed position. A camming arm is secured to the shaft member and extends in a direction toward the support members. A switch is provided for energizing the motor when the pan is depressed by a load. The motor turns the shaft member and guides the camming arm into contact with successive collapsed support members in a step-by-step manner to place a number of the support members in an extended position and lift a corresponding number of the weights substantially equal to the weight of the load.

摘要翻译： 公开了一种称重装置，其包括框架，用于支撑待称重负载的盘元件，连接到盘的通道构件，用于以可垂直移动的方式保持多个重量元件，支撑在框架内的马达和轴 构件可操作地连接到电动机并从电动机延伸，所述轴构件包括用于支撑盘元件的弹簧。 多个可折叠的支撑构件在其一端固定到框架，并且每个在其相对端处具有适于在支撑构件处于延伸和非收缩位置时接收和提升其中一个配重元件的装置。 凸轮臂固定在轴构件上并朝向支撑构件的方向延伸。 提供了一个开关，用于在锅被负载压下时使电动机通电。 电动机转动轴构件并且引导凸轮臂与连续的倒塌的支撑构件以一步一步的方式接触，以将多个支撑构件放置在延伸位置，并将相应数量的重量提升到基本等于 负载重量。

公开(公告)号：US4235296A

公开(公告)日：1980-11-25

申请号：US007649

申请日：1979-01-29

申请人： Erich Knothe ,  Franz-Josef Melcher ,  Franz Rossmann

发明人： Erich Knothe ,  Franz-Josef Melcher ,  Franz Rossmann

IPC分类号： G01G1/29 ,  G01G1/34 ,  G01G7/00

CPC分类号： G01G1/29

摘要： An automatic circuit is provided for a switching motor of electromechanical, self-stabilizing balance having electromechanical compensation. An analog transducer produces an analog measured value which triggers operation of a switching motor whenever an upper or lower limiting value is exceeded, the analog measured value being applicable to a display device. A computer, which actuates a control circuit for the switching motor and the display is connected to the analog transducer via an analog-digital converter, the converter being operatively arranged to derive fine information which is fed to the computer and high-speed coarse or preliminary information which is likewise supplied to the computer ahead of the fine information, which triggers said switching motor in event one or more limiting values is exceeded.

摘要翻译： 为具有机电补偿的机电自稳定平衡开关电机提供自动电路。 模拟换能器产生模拟测量值，当超过上限或下限值时，模拟测量值适用于显示设备，触发开关电机的操作。 驱动开关电动机和显示器的控制电路的计算机经由模拟 - 数字转换器连接到模拟换能器，该转换器可操作地布置成导出馈送到计算机的精细信息和高速粗略或初步 在超过精细信息之前同样提供给计算机的信息，其在超过一个或多个限制值的情况下触发所述开关电动机。

公开(公告)号：US4165791A

公开(公告)日：1979-08-28

申请号：US772650

申请日：1977-02-28

申请人： James E. Smith

发明人： James E. Smith

IPC分类号： G01G1/29 ,  G01G1/40

CPC分类号： G01G1/29 ,  Y10S177/03

摘要： A weight switching mechanism for a substitution type analytical balance is provided which permits the automatic selection and lifting of the required substitution weights from the gimbal assembly of a balance beam to allow accurate weighing of an unknown mass. A capacitive/electromagnetic feedback device is provided for sensing changes in the relative balance of the beam with respect to the applied unknown mass. The resultant current is applied to a force coil which maintains the beam in null position. A current related signal is converted to a digital input signal which is applied to a memory and control circuit and electronically displayed. A series of electromagnets, mounted below a printed circuit board and positioned to correspond with each substitution weight, is provided. The printed circuit board is arranged to lift upon release of the balance beam. The release of the beam causes the control circuit to selectively energize those magnets whose corresponding weights approximate the total weight of the unknown mass. The raising of the printed circuit board removes the selected weights from the gimbal assembly allowing a precise measurement of the remaining unbalance.

摘要翻译： 提供了用于替代型分析天平的重量切换机构，其允许从平衡梁的万向节组件自动选择和提升所需的替代重量，以允许精确称量未知质量。 提供电容/电磁反馈装置用于感测相对于施加的未知质量的光束的相对平衡的变化。 所得到的电流被施加到将光束保持在零位置的力线圈。 电流相关信号被转换成数字输入信号，其被施加到存储器和控制电路并以电子方式显示。 提供一系列电磁铁，安装在印刷电路板下面并且被定位成与每个取代重量对应。 印刷电路板布置成在释放平衡梁时提升。 光束的释放使得控制电路选择性地激励相应重量接近未知质量总重量的那些磁体。 印刷电路板的升高从万向架组件中移除选定的重量，从而精确测量剩余的不平衡。

公开(公告)号：US20230375396A1

公开(公告)日：2023-11-23

申请号：US18199264

申请日：2023-05-18

申请人： Government of the United States of America, as represented by the Secretary of Commerce

发明人： Leon Shih Chao ,  Gordon Allan Shaw, III ,  Stephan Schlamminger ,  Yusi Cao

IPC分类号： G01G21/16 ,  G01G23/01 ,  G01G1/29 ,  G01G1/24

CPC分类号： G01G21/166 ,  G01G23/01 ,  G01G1/29 ,  G01G1/243

摘要： A second generation NIST Kibble balance includes: a main body including a main body fulcrum node; a lever bar in mechanical communication with the main body and that pivots about the main body fulcrum node; a central flexural bridge in flexural mechanical communication with the main body and the lever bar; a measurement mass arm mechanically coupled to the main body via the lever bar, the central flexural bridge, and a mass arm flexural bridge; the mass arm flexural bridge in flexural mechanical communication with the measurement mass arm and the lever bar; a reference force arm mechanically coupled to the main body via the lever bar, the central flexural bridge, and a reference arm flexural bridge; and the reference arm flexural bridge in flexural mechanical communication with the reference force arm and the lever bar.

公开(公告)号：US4106580A

公开(公告)日：1978-08-15

申请号：US735146

申请日：1976-10-26

申请人： James J. DeMasters ,  Victor J. Musante

发明人： James J. DeMasters ,  Victor J. Musante

IPC分类号： G01G1/29 ,  G01G3/14 ,  G01G5/06 ,  G01G7/02 ,  G01G23/37 ,  G01G1/32

CPC分类号： G01G3/14 ,  G01G1/29 ,  G01G23/37 ,  G01G5/06 ,  G01G7/02

摘要： This force measuring apparatus includes a balance beam, means for applying a force representative of a load to be weighed to the balance beam, and means for applying counterweights in preselected steps to the balance beam. A signal is picked up from the position of the beam and is used to actuate a display indicating the weight of the load. The balance beam moves within a limited range of positions. Whenever it approaches one end of its limited range, a maximum or minimum signal is produced and controls a motor to drive the counterweight means to apply counterweights to the beam or to remove counterweights, as required to restore the balance beam to its limited range of positions. The display is concurrently reset to compensate for the change in the counterweight, so that the display accurately indicates the weight of the load.

摘要翻译： 该力测量装置包括平衡梁，用于将表示待称重载荷的力施加到平衡梁的装置，以及用于以平衡梁的预选步骤施加配重的装置。 从光束的位置拾取信号，并用于启动显示负载重量的显示器。 平衡梁在有限的位置范围内移动。 每当其接近其有限范围的一端时，产生最大或最小信号，并且控制电动机以驱动配重装置以将配重施加到梁上或者根据需要去除配重，以将平衡梁恢复到其有限的位置范围 。 显示器同时复位以补偿配重的变化，使得显示器准确地指示负载的重量。