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61. 发明授权

US5617757A Liquid level monitoring systems for underground storage tanks and method for its installation 失效
标题翻译：地下储罐液位监测系统及其安装方法
公开(公告)号：US5617757A
公开(公告)日：1997-04-08
申请号：US378779
申请日：1995-01-26
申请人： Jack R. Horner
发明人： Jack R. Horner
IPC分类号： G01F23/00 , G01F23/296 , G01F23/28 , B23P19/04 , B25B1/04
CPC分类号： G01F23/00 , G01F23/296 , Y10T29/49872 , Y10T29/53622 , Y10T29/53909 , Y10T29/53943
摘要： A liquid level monitoring system for underground storage tanks includes a submersible monitoring pipe system having telescoping sections that are biased to an extended position enabling the pipe to be self-retained within the tank between its upper and lower walls adjacent to and offset axially from a selected access opening in the tank, such as the discharge opening which normally accommodates the pump for the tank. The pipe system houses an electronic level sensor which is coupled to an above ground control system via conductor wires. An elongate accessing member having an openable and closable clamp jaw assembly for gripping the pipe system and disposing it in a compressed condition within the tank offset from the riser opening is provided as a part of the system.
摘要翻译：用于地下储罐的液位监测系统包括一个潜水监测管系统，该系统具有伸缩部分，该伸缩部分被偏压到延伸位置，使得管能够自身保持在槽之间的上下壁之间，储罐中的进入开口，例如通常容纳罐的泵的排出口。管道系统装有一个电子液位传感器，通过导线连接到地面控制系统上。具有可打开和可关闭的夹钳组件的细长存取构件被提供作为系统的一部分，该夹钳钳组件用于夹紧管道系统并将其布置在与提升管开口偏移的罐内的压缩状态中。

62. 发明授权

US5616929A Ink tank with an ink level detector having a viewing window 失效
标题翻译：具有具有观察窗的墨水量检测器的墨盒
公开(公告)号：US5616929A
公开(公告)日：1997-04-01
申请号：US610344
申请日：1996-03-04
申请人： Kohzo Hara
发明人： Kohzo Hara
IPC分类号： B41J2/175 , B65D25/56 , G01F23/28 , G01F23/292 , G01N15/06 , G01N21/49 , G01N21/85
CPC分类号： B41J2/17513 , B41J2/17566 , G01F23/2922 , B41J2002/17573 , Y10S250/903
摘要： An inexpensive ink tank having an ink remaining amount detection section which can be used with ink of any color is disclosed. An optical ink detection section formed from a light transmitting material has an inclined interface and is formed integrally with the ink tank. Incident light from a light source is refracted, when ink is present in the ink tank, at the interface to make refraction light and does not emerge to a visual observation portion. When no ink is present, the incident light is totally reflected by the interface to make total reflection light, which can be visually observed at the visual observation portion. A roughened face is formed at the visual observation portion so that light emerging to the visual observation portion may be scattered to facilitate visual observation.
摘要翻译：公开了一种具有可与任何颜色的墨水一起使用的墨水剩余量检测部件的便宜的墨水盒。由透光材料形成的光学墨水检测部分具有倾斜的界面并且与墨水罐一体形成。来自光源的入射光被折射，当墨水存在墨水时，在界面处产生折射光，并且不会出现在目视观察部分。当没有油墨时，入射光被界面全反射，从而产生全反射光，这可以在目视观察部分目视观察。在目视观察部分形成粗糙面，使出现在目视观察部分的光分散，便于视觉观察。

63. 发明授权

US5452611A Ultrasonic level instrument with dual frequency operation 失效
标题翻译：超声波液位仪双频操作
公开(公告)号：US5452611A
公开(公告)日：1995-09-26
申请号：US164368
申请日：1993-12-09
申请人： Lawrence Jones , Alexander J. Esin , Boris S. Rosselson
发明人： Lawrence Jones , Alexander J. Esin , Boris S. Rosselson
IPC分类号： G01F23/296 , G01F25/00 , G01N29/032 , G01F23/28
CPC分类号： G01F23/2961 , G01F23/2965 , G01F25/0061 , G01N29/032 , G01N2291/02836
摘要： An ultrasonic level instrument detects the presence of a fluid at a defined location and provides a self-diagnostic integrity check. An excitation circuit simultaneously induces vibrations at a first and second frequency in a transmitting piezoelectric crystal, and the vibrations are detected by a receiving crystal. A first and second filter circuit generate first and second filter outputs, respectively, by selectively passing the receiving crystal output at the first and second frequencies, respectively. The first filter output is indicative of the presence of fluid and the second filter output is indicative of the sensor integrity.
摘要翻译：超声波液位仪检测在定义位置处的流体的存在并提供自诊断完整性检查。励磁电路同时在发射压电晶体中引起第一和第二频率的振动，并且由接收晶体检测振动。第一和第二滤波器电路分别通过选择性地使第一和第二频率的接收晶体输出通过来产生第一和第二滤波器输出。第一个过滤器输出表示流体的存在，第二个过滤器输出表示传感器的完整性。

64. 发明授权

US5410518A Ultrasonic transducer assembly for measuring liquid level 失效
标题翻译：用于测量液位的超声波换能器组件
公开(公告)号：US5410518A
公开(公告)日：1995-04-25
申请号：US152997
申请日：1993-11-12
申请人： Robert E. Birkett
发明人： Robert E. Birkett
IPC分类号： G01F15/14 , G01F23/296 , H05K9/00 , G01F23/28
CPC分类号： H05K9/0045 , G01F15/14 , G01F23/296 , G01F23/2968 , Y10S367/908
摘要： A transducer assembly for an ultrasonic liquid level measuring device utilizing a piezoelectric crystal for generating ultrasonic pulses to be transmitted through a volume of liquid. The assembly includes an enclosure for the piezoelectric crystal assembly, that defines an interior space and a sealed opening for a cable. The enclosure is provided with a metallic layer that shields the entire interior space from electromagnetic interference. The assembly also includes a crystal housing assembly and a terminal block all located within the sealed enclosure.
摘要翻译：一种用于超声波液位测量装置的换能器组件，其利用压电晶体产生要透过一定体积液体的超声波脉冲。组件包括用于压电晶体组件的外壳，其限定内部空间和用于电缆的密封开口。外壳设有金属层，可以遮蔽整个内部空间免受电磁干扰。组件还包括晶体壳体组件和全部位于密封外壳内的端子块。

65. 发明授权

US5357801A Liquid-level gauging 失效
标题翻译：液位计
公开(公告)号：US5357801A
公开(公告)日：1994-10-25
申请号：US103636
申请日：1993-08-11
申请人： David Sinclair
发明人： David Sinclair
IPC分类号： G01F23/296 , G01F23/28
CPC分类号： G01F23/2962 , Y10S367/908
摘要： An ultrasonic liquid level gauging sensor has a transducer at the lower end of a tube that is filled with liquid to the same height as liquid outside the tube. The sensor has an axial rod extending along the tube and supporting several calibration reflectors. The rod enables the sensor to be used at high tilt angles.
摘要翻译：超声波液面计量传感器在管的下端具有一个换能器，该换能器充满与管外的液体相同高度的液体。传感器具有沿管延伸的轴向杆并支撑多个校准反射器。该杆使传感器能够以高倾斜角度使用。

66. 发明授权

US5301549A Liquid-level gauging 失效
标题翻译：液位计
公开(公告)号：US5301549A
公开(公告)日：1994-04-12
申请号：US21465
申请日：1993-02-23
申请人： David Sinclair
发明人： David Sinclair
IPC分类号： G01F23/28 , G01F23/296
CPC分类号： G01F23/2968 , G01F23/2961 , G01F23/2962 , Y10S367/908
摘要： An ultrasonic liquid level sensor has a transducer mounted at the lower end of an aluminum tube that projects upwardly in a liquid tank so that the tube is filled with liquid to the same height as that outside the tube. Internally, the tube has a layer of an acoustically-absorbing plastics to damp the transmission of ultrasonic vibration from the wall of the tube into liquid within the tube.
摘要翻译：超声波液面传感器具有安装在铝管的下端的换能器，其在液体罐中向上突出，使得管充满与管外相同高度的液体。在内部，管具有一层吸声塑料，以阻止超声波振动从管壁渗透到管内的液体中。

67. 发明授权

US5263371A Methods for temperature-compensated liquid height and leak detection measurements using quasi-static reference subsystem 失效
标题翻译：使用准静态参考子系统的温度补偿液体高度和泄漏检测测量方法
公开(公告)号：US5263371A
公开(公告)日：1993-11-23
申请号：US830229
申请日：1992-01-30
申请人： Joseph W. Maresca, Jr. , James W. Starr , Christopher P. Wilson
发明人： Joseph W. Maresca, Jr. , James W. Starr , Christopher P. Wilson
IPC分类号： G01F23/296 , G01F23/30 , G01F23/76 , G01M3/32 , G01F23/28
CPC分类号： G01M3/3245 , G01F23/2962 , G01F23/30 , G01F23/76 , Y10S181/402 , Y10S367/908
摘要： A method for measuring the temperature-compensated change in the height of a surface of a liquid. The method positions an acoustic signal transducer for emitting and receiving acoustic signals below the surface of the liquid, positions a quasi-static reference device with a fiducial such that the fiducial lies within a predetermined range below the surface of the liquid, and positions one or more fiducials below the surface of the liquid to establish points separated by known distances. The transducer emits acoustic signals, and receives their reflections. The travel times of the reflections from the liquid surface and the fiducials are used to calculate changes in travel times during the measurement period, to estimate the speed of sound in the liquid, to correct for temperature-induced changes in the travel times, and to obtain a temperature-compensated change in travel time to the liquid surface. The temperature-compensated change in the height of the surface of the liquid during the measurement period is calculated using the product of the estimate of the speed of sound in the liquid and the temperature-compensated change in travel time to the liquid surface. The presence of a leak in a storage tank may be detected by converting the temperature-compensated change in the height of the surface of the liquid to temperature-compensated volume change using the known shape of the tank and liquid height, and then comparing the temperature-compensated volume change to a threshold value to determine whether the tank is leaking.
摘要翻译：一种用于测量液体表面高度的温度补偿变化的方法。该方法定位用于发射和接收液体表面下方的声学信号的声学信号换能器，将具有基准的准静态参考装置定位成使得基准位于液体表面下方的预定范围内，并将一个或在液体表面下方有更多的基准，以建立以已知距离分开的点。传感器发出声信号，并接收它们的反射。使用液面和基准点的反射的行进时间来计算测量期间的行进时间的变化，以估计液体中的声速，以校正温度引起的行驶时间变化，以及获得对液面的行进时间的温度补偿变化。在测量期间液体表面高度的温度补偿变化是使用液体中的声速估计和温度补偿的到液面的行进时间的变化的乘积来计算的。可以通过使用已知形状的罐和液体高度将液体表面的高度的温度补偿变化转换成温度补偿的体积变化来检测储存罐中的泄漏，然后比较温度 - 补偿量变为阈值，以确定油箱是否泄漏。

68. 发明授权

US5257539A Electronic oil level indicator 失效
标题翻译：电子油位指示器
公开(公告)号：US5257539A
公开(公告)日：1993-11-02
申请号：US888346
申请日：1992-05-21
申请人： Danny E. Gale , George Spector
发明人： Danny E. Gale , George Spector
IPC分类号： G01F23/292 , G01F23/28
CPC分类号： G01F23/292 , G01F23/2927 , Y10S250/901
摘要： An electronic oil level indicator is provided to show the amount of oil in an oil pan of an internal combustion engine which consists of a perforated housing positioned in the oil pan, so that the oil in the oil pan will enter the housing. A mechanism is connected to the housing for producing light. A fiber optic bundle has a first end connected to the housing spaced away from the light producing mechanism within the oil. A display panel is remotely located from the housing with a second end of the fiber optic bundle connected thereto. The height level of the oil will control the amount of illumination from the light producing mechanism reaching the fiber optic bundle which in turn is carried to the display panel to allow a person to visually check the oil level on the display panel.
摘要翻译：提供电子油位指示器，以显示由定位在油盘中的穿孔壳体组成的内燃机油盘中的油量，使得油底壳中的油进入壳体。机构连接到壳体以产生光。光纤束具有连接到外壳上的与壳体内的光产生机构间隔开的第一端。显示面板远离壳体定位，光纤束的第二端与其连接。油的高度将控制来自发光机构到达光纤束的照明量，光纤束又被传送到显示面板，以允许人们目视地检查显示面板上的油位。

69. 发明授权

US5249463A Measurement of liquid level 失效
标题翻译：液位测量
公开(公告)号：US5249463A
公开(公告)日：1993-10-05
申请号：US947846
申请日：1992-09-21
申请人： Jolyon P. Willson , Paul N. Richards
发明人： Jolyon P. Willson , Paul N. Richards
IPC分类号： G01F23/284 , G01F23/28
CPC分类号： G01F23/284
摘要： A water level measurement system for use with a pressurized power plant boiler comprises a tubular pressure vessel for attachment to one end of the boiler such that the water level in the pressure vessel is the same as in the boiler. The pressure vessel has a central rod-like conductor which together with the vessel forms a coaxial RF waveguide. A pair of spaced reference discontinuities are provided in the conductor above the maximum level of the water, so that an RF pulse injected into the waveguide is reflected successively by both discontinuities and the surface of the water. The level of the water can then be determined independently of changes in the dielectric constant of the vapor above it, from the ratio between the time intervals between the first and second reflected pulses and between the first and third reflected pulses. The conductor is mounted at the top of the pressure vessel by way of a pressure seal and a ceramic insulator.

70. 发明授权

US5095747A Cryogenic liquid level sensing apparatus 失效
标题翻译：低温液位感测装置
公开(公告)号：US5095747A
公开(公告)日：1992-03-17
申请号：US456937
申请日：1989-12-26
申请人： Dennis H. Smith
发明人： Dennis H. Smith
IPC分类号： G01F23/28 , G01F23/296
CPC分类号： G01F23/2962
摘要： Method and apparatus for measuring the level of a cryogenic liquid in a container using frequency pulses. The time interval between the transmitted and echoed pulse is measured and compared with predetermined store values which are characteristics of the container of known geometry.

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