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公开(公告)号：US4091992A
公开(公告)日：1978-05-30
申请号：US790372
申请日：1977-04-25
Applicant: Ernest H. Stark
Inventor： Ernest H. Stark
Abstract: A force-balance transmitter for producing a pressure signal proportional to the enthalpy of air has a flapper associated with a nozzle and employs a control force acting on the flapper in opposition to a feedback force applied to the flapper by the controlled fluid pressure acting over the area of the nozzle, the control force being produced by the combination of forces exerted on the flapper by two resilient beams subjected to individual bending moments responsive to sensed temperature and sensed humidity respectively.
Abstract translation: 用于产生与空气焓成比例的压力信号的力平衡传感器具有与喷嘴相关联的挡板，并且采用作用在挡板上的控制力，以抵抗作用在挡板上的受控流体压力施加到挡板的反馈力 喷嘴的面积，控制力是通过分别经受响应于检测到的温度和感测湿度的各个弯矩而由两个弹性梁施加在挡板上的力的组合而产生的。
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公开(公告)号：US3878725A
公开(公告)日：1975-04-22
申请号：US40068773
申请日：1973-09-25
Applicant: FISCHER & PORTER CO
Inventor： GAERTNER MAX
CPC classification number: G01L13/025 , G01L11/008 , Y10T403/54
Abstract: An electronic differential pressure transmitter for use with industrial processes to produce an output signal suitable for transmission to a remote station for operating, indicating, recording or control equipment. The transmitter includes a force bar to which an input force is applied, the resultant bar displacement being sensed by a detector coupled to an electronic circuit yielding a feedback signal proportional to the input force. The feedback signal is fed to a motor whose operating arm applies to the bar a rebalancing force in opposition to the input force. Linkage between the arm of the motor and the upper end of the force bar is effected by a connecting rod which causes the motor arm to rotate about a pivot formed by a cross flexure formed by a stationary platform piece and a wing piece pivoted therefrom by intersecting wires, axial displacement of the wing piece being prevented by a torsion rod disposed in parallel relation to the pivot axis passing through the points of intersection of the wires.
Abstract translation: 一种电子差压变送器，用于与工业过程一起产生适于传输到远程站的输出信号，用于操作，指示，记录或控制设备。 发射机包括施加输入力的力杆，所得到的杆位移由耦合到电子电路的检测器感测，产生与输入力成比例的反馈信号。 反馈信号被馈送到电动机，其操作臂向杆施加与输入力相反的重新平衡力。 马达的臂与力杆的上端之间的连接是通过一个连杆实现的，该连杆使得马达臂围绕由一固定平台件形成的十字弯曲部形成的枢轴转动，以及一由与之相交的翼片， 电线，翼片的轴向位移由通过与电线的相交点相对于枢转轴线平行设置的扭力杆防止。
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公开(公告)号：US3786678A
公开(公告)日：1974-01-22
申请号：US3786678D
申请日：1972-02-02
Applicant: METTLER INSTRUMENTE AG
Inventor： KUNZ P
CPC classification number: G01G7/04
Abstract: Force measuring apparatus of the type including electromagnetic load compensation means for returning a load-responsive movable member to its initial no-load position relative to a housing. Load compensating pulses of constant amplitude are supplied to a load compensating coil that is connected with the movable member, the length of said pulses being varied as a function of the extent of the displacement of the movable member from its initial position as determined by position sensing means. The invention is characterized by the provision of means for supplying high frequency pulses from an oscillator to a counter only during periods corresponding with the length of said load compensating current pulses.
Abstract translation: 这种类型的力测量装置包括电磁负载补偿装置，用于将负载响应可动构件相对于壳体返回到其初始空载位置。 恒定幅度的负载补偿脉冲被提供给与可移动部件连接的负载补偿线圈，所述脉冲的长度随着可移动部件从其初始位置的位移的程度而变化，由位置感测 手段。 本发明的特征在于提供用于仅在对应于所述负载补偿电流脉冲的长度的时段期间将来自振荡器的高频脉冲提供给计数器。
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公开(公告)号：US3768311A
公开(公告)日：1973-10-30
申请号：US3768311D
申请日：1971-02-08
Applicant: DRESSER IND
CPC classification number: G01R17/08
Abstract: A motion responsive electrical control apparatus for emitting an electrical control signal incrementally variable in desired correlation to a path of given mechanical motion. The apparatus includes a rotatably regulated electrical controller for emitting signals correlated to the angular position setting of the controller regulator. A cam member pivotally mounted onto the regulator of the controller is arcuately biased into overlying engagement with a movable follower defining a motion path to which the apparatus is to respond. Presettably adjustable pitch members incrementally spaced along the path of follower motion effect desired incremental changes in cam pitch thereat affording corresponding change to the controller position setting.
Abstract translation: 一种运动响应电控制装置，用于发出与所给定的机械运动的路径有期望的相关性递增地变化的电控制信号。 该装置包括可旋转调节的电控制器，用于发射与控制器调节器的角位置设置相关的信号。 枢转地安装到控制器的调节器上的凸轮部件被弧形地偏置成与限定设备要响应的运动路径的可动从动件的上部接合。 可调节的节距构件沿跟随器运动的路径递增地间隔，影响凸轮节距的所需增量变化，从而提供对控制器位置设置的相应变化。
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公开(公告)号：US3745821A
公开(公告)日：1973-07-17
申请号：US3745821D
申请日：1970-09-30
Applicant: AMETEK INC
IPC: G01F15/075 , G01L11/00 , G01L19/08 , G01L1/08
CPC classification number: G01L11/008 , G01F15/075 , G01L11/004 , G01L19/08
Abstract: An electrical current transducer or transmitter having a meter movement with magnet means movable both by input torque directly to its shaft and by feedback current through stationary coils adjacent to the magnet, a vane mounted on the movement controlling radiant energy, and an energy sensitive means to produce a current level proportional to input displacement of the meter movement. The transducer comprises the output means of several electrical transmitters whose input means proportions the measured condition to torque for actuation of the transducer.
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Patent Agency Ranking
公开(公告)号：US3621418A
公开(公告)日：1971-11-16
申请号：US3621418D
申请日：1969-08-13
Applicant: COURTAULDS LTD
Inventor： BAKER BERNARD STUART
Abstract: A transducer comprising an electrical conductor located in the field of a permanent magnet or an electromagnet, whereby, by passing a current through the conductor, force will be caused to act between the conductor and the magnet, the transducer including a further electrical conductor connected in a circuit with the first-mentioned conductor so as to carry a current related to the current through the first-mentioned conductor and such as to tend to nullify the effect of that current to alter the field of the magnet linking the first-mentioned conductor. A transducer element is also claimed.
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47.发明授权
公开(公告)号：US3390386A
公开(公告)日：1968-06-25
申请号：US43456765
申请日：1965-02-23
Applicant: LEEDS & NORTHRUP CO
Inventor： CRANCH EDWARD J , HICKOX RICHARD M
IPC: G01L1/08
CPC classification number: G01L1/086
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公开(公告)号：US3139750A
公开(公告)日：1964-07-07
申请号：US13374661
申请日：1961-08-24
Applicant: SMITH MAX R , HOWELL MELVIN D
Inventor： SMITH MAX R , HOWELL MELVIN D
IPC: G01L1/08
CPC classification number: G01L1/083
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公开(公告)号：US2593339A
公开(公告)日：1952-04-15
申请号：US55412844
申请日：1944-09-14
Applicant: MANNING MAXWELL & MOORE INC
Inventor： OSTERMANN HANS J , WILKENS ARNO G K , BRYAN CHARLES B
CPC classification number: G01L1/086 , G01F1/28 , G01L9/0029 , G01L9/10 , G01L11/008 , G01R17/08
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公开(公告)号：US2342141A
公开(公告)日：1944-02-22
申请号：US42889642
申请日：1942-01-30
Applicant: GEN ELECTRIC
Inventor： HANSEN JR ALBERT
IPC: G01L1/08
CPC classification number: G01L1/08
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