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公开(公告)号：US3685604A
公开(公告)日：1972-08-22
申请号：US3685604D
申请日：1970-09-28
Applicant: WM AINSWORTH INC
Inventor： SMITH JAMES E , BORGOGNO VICTOR F
CPC classification number: G01G21/02 , G01G1/246 , G01G7/04 , G01G21/00 , Y10S177/09
Abstract: A pivotally mounted balance beam is constructed and arranged to nullify its pendular characteristics by appropriately distributing and balancing the moments of the mass both parallel and perpendicular to the beam plane so that whenever the beam reference plane is tilted out of the horizontal any weighing errors resulting from tilt and vibration of the frame of the weigh balance apparatus are minimized. In forming a part of the weigh balance apparatus, a circuit generates an output proportional to load as a function of beam deflection sensed by capacitive sensors and operates through an electromagnetic restoring device including a beam mounted forcer coil to restore the beam to its null position. The coil is connected through electrically conductive knife edges and bearing flats to receive the circuit output and has its position relative to the magnet of the restoring device set so that the restoring device has a linear response to the circuit output. A display receives the circuit output and is compensated for errors caused by changes in the response of the restoring device as a function of its operating temperature to provide a readout representing load.
Abstract translation: 枢轴安装的平衡梁被构造和布置成通过适当地分布和平衡与梁平面平行和垂直的质量的力矩来消除其摆动特性，使得每当梁参考平面从水平面倾斜时，由 重量平衡装置的框架的倾斜和振动最小化。 在形成称重平衡装置的一部分时，电路产生与负载成比例的输出，作为由电容式传感器感测的光束偏转的函数，并且通过包括光束安装的线圈的电磁恢复装置进行操作，以将光束恢复到其零位置。 线圈通过导电刀刃和轴承平面连接以接收电路输出并且具有相对于恢复装置组的磁体的位置，使得恢复装置对电路输出具有线性响应。 显示器接收电路输出，并且对由恢复装置的响应的变化引起的错误作为其工作温度的函数进行补偿，以提供代表负载的读出。
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公开(公告)号：US3684875A
公开(公告)日：1972-08-15
申请号：US3684875D
申请日：1970-09-28
Applicant: WM AINSWORTH INC
Inventor： SMITH JAMES E , BORGOGNO VICTOR E , LUEHR ROBERT E
CPC classification number: G06F7/4981 , G01G7/04 , G01G23/163 , H03M1/50
Abstract: In an electronic digital-reading balance, electronic circuitry is provided for automatically deducting tare weight from the weight of an object being weighed wherein a latch circuit stores the digital reading of the tare weight, and a comparator in cooperation with display circuitry is capable of generating and displaying as a digital readout a value equal to the gross weight of the object being weighed less the tare weight stored in the latching circuitry. Although specifically adaptable for use in deducting tare or other given weights in a weigh balance apparatus, the same or similar circuitry has useful application to other analog-to-digital measuring and counting devices.
Abstract translation: 在电子数字阅读平衡中，提供电子电路用于从被测量物体的重量自动减去皮重，其中锁存电路存储重量的数字读数，并且与显示电路协作的比较器能够产生 并且显示数字读数，其值等于被称重对象的总重量减去存储在锁存电路中的皮重。 虽然特别适用于在称重平衡装置中减去皮重或其他给定的重量，但相同或相似的电路对其他模拟 - 数字测量和计数装置具有有用的应用。
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3.发明授权
公开(公告)号：US3604525A
公开(公告)日：1971-09-14
申请号：US3604525D
申请日：1969-08-15
Applicant: WM AINSWORTH INC
Inventor： BLETHEN CHARLES B , SMITH JAMES E
CPC classification number: G01G7/04
Abstract: A top-loading weigh apparatus has a stabilized balance beam mechanism with the load being vertically applied through a horizontal balance arm on a pair of spaced pivots, and a differential capacitance is developed by sensing the horizontal displacement of a stabilized beam isolated from the weighing area. The capacitance developed in response to beam displacement is converted into a variable current output and applied as a restoring force proportional to but in opposition to the unbalancing force in order to quickly and accurately return the beam mechanism to its null position. A voltage is developed in direct proportion to the variable current output required to restore the beam to its null position and which is translated for recording and visual display of the applied weight.
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