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1. 发明授权

US4155263A Multiplexed strain gauge bridge 失效
标题翻译：多路应变仪桥
公开(公告)号：US4155263A
公开(公告)日：1979-05-22
申请号：US881919
申请日：1978-02-28
申请人： Robert G. Frantz
发明人： Robert G. Frantz
IPC分类号： G01G3/145 , G01G19/12 , G01L1/22 , G01L1/20
CPC分类号： G01G19/12 , G01G3/145 , G01L1/225
摘要： A strain gauge load measuring system includes a pair of strain gauges mounted on each of one or more load supports, such as the axles of a vehicle. The strain gauges connect in a DC bridge circuit. A multiplexer comprises a pair of analog switches which alternately apply the voltage from respective bridge output terminals to an AC coupled amplifier, as a square wave voltage of amplitude equal to the difference between the voltages on the bridge output terminals. The amplified square wave voltage is applied across a meter as an amplified DC signal proportional to the DC bridge output signal, by a demultiplexer incorporating a further pair of analog switches cooperating with low pass filter elements. The demultiplexed DC signal across the meter is compared by an operational amplifier, having positive feedback for hysteresis, with the voltage on a variable voltage divider to determine when a threshold load value has been reached.
摘要翻译：应变计负载测量系统包括一对应变仪，其安装在一个或多个负载支撑件中的每一个上，例如车辆的轴。应变片连接在直流电桥电路中。多路复用器包括一对模拟开关，其将来自相应桥接输出端子的电压交替施加到AC耦合放大器，作为幅度等于桥输出端子上的电压之差的方波电压。放大的方波电压作为与直流电桥输出信号成比例的放大的直流信号，通过并入另一对与低通滤波器元件协作的模拟开关的解复用器施加。跨越仪表的解复用的直流信号通过运算放大器进行比较，运算放大器具有滞后的正反馈，可变分压器上的电压可以确定何时达到阈值负载值。

2. 发明授权

US3557891A Electrical counting scale 失效
标题翻译：电气计数
公开(公告)号：US3557891A
公开(公告)日：1971-01-26
申请号：US3557891D
申请日：1968-09-11
申请人： RELIANCE ELECTRIC & ENG CO
发明人： KLOPFENSTEIN JOHN R
IPC分类号： G01G3/145 , G01G19/42 , G01G19/00
CPC分类号： G01G19/42 , G01G3/145
摘要： An electrical counting scale comprising a single transducer for both weighing a known number of sample pieces of like weight and an unknown number of said pieces to be counted. Load indicating means electrically connected to the transducer indicates load upon the scale in terms of the number of said pieces to be counted. Calibrating means are provided for so calibrating the load indicating means in accordance with the number of sample pieces and a ratio factor that the single transducer performs both of the foregoing weighing functions.

3. 发明授权

US3221828A Auxiliary load circuitry for load responsive devices 失效
标题翻译：用于负载响应设备的辅助负载电路
公开(公告)号：US3221828A
公开(公告)日：1965-12-07
申请号：US33645264
申请日：1964-01-08
申请人： TOLEDO SCALE CORP
发明人： KOHLER ROBERT D
IPC分类号： G01G3/145
CPC分类号： G01G3/145

4. 发明授权

US3128041A Counter 失效
标题翻译：计数器
公开(公告)号：US3128041A
公开(公告)日：1964-04-07
申请号：US12368361
申请日：1961-07-13
申请人： TOLEDO SCALE CORP
发明人： ADLER CLARENCE E
IPC分类号： G01G3/145 , G01G23/18 , G01G23/20 , G06M1/14 , G06M1/16
CPC分类号： G06M1/163 , G01G3/145 , G01G23/18 , G01G23/203 , G06M1/143

5. 发明授权

US3027957A Weighing system 失效
标题翻译：称重系统
公开(公告)号：US3027957A
公开(公告)日：1962-04-03
申请号：US1830460
申请日：1960-03-29
申请人： TOLEDO SCALE CORP
发明人： ORR ROBERT F
IPC分类号： G01G3/145 , G01G19/02
CPC分类号： G01G3/145 , G01G19/021

6. 发明授权

US2938701A Batch weighing automatic weighing systems 失效
标题翻译：批量称重自动称重系统
公开(公告)号：US2938701A
公开(公告)日：1960-05-31
申请号：US42459654
申请日：1954-04-21
申请人： FAIRBANKS MORSE & CO
发明人： THORSSON MATTHEW T , LAULER LOUIS J
IPC分类号： G01G3/145 , G01G19/18
CPC分类号： G01G3/145 , G01G19/18

7. 发明授权

US2873107A Weighing scale system 失效
公开(公告)号：US2873107A
公开(公告)日：1959-02-10
申请号：US50890555
申请日：1955-05-17
申请人： FAIRBAUKS MORSE & CO
发明人： LYONS LAWRENCE J
IPC分类号： G01G3/145 , G01G19/18
CPC分类号： G01G3/145 , G01G19/18

8. 发明授权

US3918539A Weighing system 失效
标题翻译：称重系统
公开(公告)号：US3918539A
公开(公告)日：1975-11-11
申请号：US47824374
申请日：1974-06-11
申请人： FIBER CONTROLS CORP
发明人： WISE CECIL S
IPC分类号： G01G3/145 , G01G13/28 , G01G19/34 , G01G3/14
CPC分类号： G01G3/145 , D01G23/045 , G01G13/28 , G01G19/346
摘要： A weighing system whereby the weight of material fed into a weigh pan is detected and an electrical signal continually indicating that weight produced and used to control the feeding and dumping of material into and from the weigh pan. In one embodiment, the signal is produced by applying voltage to a wire which supports the weigh pan directly and which has a resistance which varies with the weight supported. In another embodiment, a probe detects the movement of a member attached to the weigh pan, which moves in response to changes of weight in the pan, from voltages generated in the probe by two single turn coils mounted with opposite flux paths on the member for movement with it. The signals produced are used to control the rate of feeding of the material into the weigh pan and to cut off feeding when a chosen weight is indicated. Control circuitry for weighing and dumping material in a fiber blending system is also disclosed.
摘要翻译：一种称重系统，其中检测到进料到称重盘中的材料的重量，并且电信号连续地指示产生并用于控制进料和重物从料盘进料和倾倒的重量。在一个实施例中，通过向直接支撑称重盘的线施加电压并且具有随支撑的重量而变化的电阻来产生信号。在另一个实施例中，探针检测附接到称重盘的构件的运动，该称重盘响应于盘中重量的变化而移动，由探针中产生的电压由安装在构件上的相反磁通路径的两个单匝线圈移动，运动与它。产生的信号用于控制材料进入称重盘的速度，并在指定所选重量时切断进料。还公开了用于在纤维混合系统中称重和倾倒材料的控制电路。

9. 发明授权

US3561554A Electrical weighing apparatus with incremental load-counterbalancing means 失效
标题翻译：具有增量负载平衡的电子称重装置
公开(公告)号：US3561554A
公开(公告)日：1971-02-09
申请号：US3561554D
申请日：1969-07-01
申请人： HOWE RICHARDSON SCALE CO
发明人： MERRIAM LAYTON C , BURKE ARTHUR J
IPC分类号： G01G1/28 , G01G3/14 , G01G3/145 , G01G1/34
CPC分类号： G01G3/145 , G01G1/28 , G01G3/1406
摘要： A weighing apparatus having a load cell operatively connected to the lever system of a scale so that the output signal voltage of the load cell represents the load-produced force that is transmitted by the lever system to the input of the load cell. A control circuit responds to the load cell output signal voltage to back balance a portion of the load being measured with range weights that are applied to the lever system so that the effective operating range of the load cell is limited to only a fractional proportion of the total scale capacity. As loadcounterbalancing weights are added and removed, the control circuit also operates a multirange chart in a weight indicating dial mechanism to provide a readout of the total weight of the load.

10. 发明授权

US3490553A Electrical weighing apparatus 失效
标题翻译：电子称重装置
公开(公告)号：US3490553A
公开(公告)日：1970-01-20
申请号：US3490553D
申请日：1967-09-18
申请人： GIRLING LTD
发明人： RAMSAY GRAHAM G
IPC分类号： G01G3/145 , G01G3/14
CPC分类号： G01G3/145

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