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1. 发明授权

US06695256B2 Cryogenic propellant depletion system for a launch vehicle 失效
标题翻译：运载火箭的低温推进剂耗尽系统
公开(公告)号：US06695256B2
公开(公告)日：2004-02-24
申请号：US10057224
申请日：2002-01-25
申请人： Peter Zeender , Joseph Patrick Wurst
发明人： Peter Zeender , Joseph Patrick Wurst
IPC分类号： G01F2322
CPC分类号： B64G1/002 , B64G1/402
摘要： A cryogenic propellant depletion system for maximizing cryogenic propellant use in a space launch vehicle. The cryogenic propellant depletion system utilizes a plurality of pressure measurements to monitor one or more parameters of the cryogenic propellant in a feed line interconnecting a cryogenic propellant storage tank to the launch vehicle's engine. In this regard, the cryogenic depletion system includes a processor and supported logic to determine a head pressure supplied by the cryogenic propellant in the feed line and the mass of the cryogenic propellant in the feed line. The cryogenic depletion monitoring system is operative to determine these propellant parameters irrespective of a two-phase flow existing in the feed line. Finally, the system is configured to initiate engine shut down when at least one of the determined propellant parameters falls below a minimum threshold value.
摘要翻译：一种用于在空间运载火箭中最大限度地利用低温推进剂的低温推进剂消耗系统。低温推进剂耗尽系统利用多个压力测量来监测将低温推进剂储罐与运载火箭发动机相互连接的供给管线中的低温推进剂的一个或多个参数。在这方面，低温耗尽系统包括处理器和支持的逻辑，用于确定供给管线中的低温推进剂所提供的头部压力和进料管线中的低温推进剂的质量。低温耗尽监测系统用于确定这些推进剂参数，而与进料管线中存在的两相流无关。最后，当所确定的推进剂参数中的至少一个降到最低阈值以下时，该系统被配置为启动发动机关闭。

2. 发明授权

US06260414B1 Liquid crystal liquid level indicator 失效
标题翻译：液晶液位指示器
公开(公告)号：US06260414B1
公开(公告)日：2001-07-17
申请号：US09176790
申请日：1998-10-22
申请人： Keith Brown , Chester J. Currie
发明人： Keith Brown , Chester J. Currie
IPC分类号： G01F2322
CPC分类号： G01F23/22
摘要： A cholesteric liquid crystal fluid level indicator that determines the level of a cooled liquid, such as beer, in a closed, opaque keg when placed in thermal contact with the exterior surface of the keg, by producing a color change that is a function of the liquid temperature when the liquid is within a predetermined temperature range, the indicator comprises a multiple level strip having a top transparent layer, liquid crystal layer, a black background layer and an attachment layer employing a protected adhesive on its bottom surface for removably attaching the strip to the keg, the instant invention employs a heat conducting adhesive on the attachment layer and for securing certain layers in the strip, such as the liquid crystal layer.
摘要翻译：胆甾醇型液晶液位指示器，当通过产生与小桶的外表面热接触而与密封的不透明小桶中的冷却液体（例如啤酒）的水平，通过产生作为当液体在预定温度范围内时，液体温度指示器包括具有顶部透明层，液晶层，黑色背景层和在其底表面上使用受保护的粘合剂的附着层的多层条带，用于可移除地附接条带本发明在附着层上采用导热粘合剂，并且用于固定条带中的某些层，例如液晶层。

3. 发明授权

US06424924B1 Method and device for determining the fuel reserve in a motor vehicle fuel system 失效
标题翻译：用于确定机动车辆燃料系统中的燃料储备的方法和装置
公开(公告)号：US06424924B1
公开(公告)日：2002-07-23
申请号：US09742856
申请日：2000-12-21
申请人： Axel Wagner , Rüdiger Walter
发明人： Axel Wagner , Rüdiger Walter
IPC分类号： G01F2322
CPC分类号： B60K15/077 , B60K15/061 , B60K2015/03217 , G01F23/0076
摘要： A method and a device are provided for determining the amount of fuel in the fuel tank of a motor vehicle. The fuel tank has a main storage reservoir which is provided with a filling level meter for determining the respective fuel therein and a reserve reservoir which is of substantially smaller volume in comparison with the main storage reservoir, which is closed in itself, and which is supplied with fuel by a pump from the main storage reservoir. After the main storage reservoir is emptied, the fuel reserve which is then still contained in the reserve reservoir is calculated as the difference of a defined volume of the reserve reservoir (12) and the fuel consumption summed over time.
摘要翻译：提供了一种用于确定机动车辆的燃料箱中的燃料量的方法和装置。燃料箱具有主存储容器，其设置有用于确定其中的各自燃料的填充液位计和与本体闭合的主存储容器相比体积基本较小的储存容器，并且供给通过来自主储存器的泵的燃料。主储水库清空后，储备库中仍然储存的燃料储量按照储量（12）定义容积与燃油消耗量随时间相加的差值计算。

4. 发明授权

US06202486B1 Analog liquid level sensor 失效
标题翻译：模拟液位传感器
公开(公告)号：US06202486B1
公开(公告)日：2001-03-20
申请号：US09164962
申请日：1998-10-01
申请人： John W. Kemp
发明人： John W. Kemp
IPC分类号： G01F2322
CPC分类号： G01F23/22 , G01F23/246
摘要： A sensor for determining the location of the surface of liquid in a container, includes: a hollow tubular stainless steel probe inserted into said container, said probe having one portion arranged above the surface of the liquid and having another portion submerged in the liquid; a first thermocouple operatively arranged within the probe to sense the temperature above the liquid surface; a second thermocouple operatively arranged within the probe to sense the temperature of said liquid at a point beneath the liquid surface; a resistance wire operatively arranged within the probe; a current source operatively arranged to apply a constant-current to the ends of the wire; and an ohmmeter for measuring the electrical resistance of the wire according to the equation: RT=ƒ[kaTaHh+kwTwH(1−h)] where RT is the resistance of the wire, ƒ is the symbol for “a function of”, ka is a constant for the probe first portion, Ta is the temperature sensed by the first temperature sensor, kw is a constant for the probe second portion, Tw is the temperature sensed by said second temperature sensor, H is the vertical distance between said first and second temperature sensors, and h is the distance from said first temperature sensor to said liquid surface; whereby the liquid level may be indicated by the value of h.
摘要翻译：用于确定容器中液体表面的位置的传感器包括：插入所述容器中的中空管状不锈钢探针，所述探针具有布置在液体表面上方的一部分，并且另一部分浸没在液体中; 第一热电偶，其可操作地布置在所述探针内以感测所述液体表面上方的温度; 第二热电偶，其可操作地布置在所述探针内以在所述液体表面下方的点处感测所述液体的温度; 可操作地布置在探针内的电阻丝; 电流源，其可操作地布置成将恒定电流施加到所述电线的端部; 以及用于根据以下等式测量导线的电阻的欧姆表：其中RT是导线的电阻，ƒ是“功能”的符号，ka是探针第一部分的常数，Ta是温度由第一温度传感器感测，kw是探针第二部分的常数，Tw是由所述第二温度传感器感测的温度，H是所述第一和第二温度传感器之间的垂直距离，h是与所述第一温度传感器到所述液面; 由此液位可由h的值表示。

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