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    • 1. 发明授权
    • Membrane based fuel deoxygenator
    • 膜基燃料脱氧器
    • US06315815B1
    • 2001-11-13
    • US09464112
    • 1999-12-16
    • Louis J. SpadacciniRichard A. MeinzerHe Huang
    • Louis J. SpadacciniRichard A. MeinzerHe Huang
    • B01D1900
    • F02C7/224B01D19/0031B01D53/22B01D61/00B01D2257/104
    • Apparatus and method for the deoxygenation of liquid fuel in the fuel system of an energy conversion device, such as an aircraft gas turbine engine. A membrane filter is disposed in the fuel system and is selected to remove oxygen from the fuel, typically a hydrocarbon, while excluding the fuel. The membrane filter may be permeable or porous to the oxygen and, in a preferred embodiment, is of polytetraflouroethylene. Fuel with dissolved oxygen (typically from air) is flowed in contact with one surface of the membrane filter, and removed oxygen is collected from the opposite surface of the filter. The difference in the partial pressure of oxygen across the membrane filter may be controlled to regulate the driving force for moving oxygen through the membrane. Reduction of the oxygen concentration in jet fuel to less than 10 ppm at liquid space velocities of 100/hr and greater are attained.
    • 在诸如飞机燃气涡轮发动机的能量转换装置的燃料系统中对液体燃料进行脱氧的装置和方法。 膜过滤器设置在燃料系统中,并且被选择为从燃料(通常为烃)中除去氧气,同时排除燃料。 膜过滤器对于氧可以是可渗透的或多孔的,并且在一个优选的实施方式中是聚四氟乙烯。 具有溶解氧(通常来自空气)的燃料与膜过滤器的一个表面接触地流动,并且从过滤器的相对表面收集去除的氧气。 可以控制穿过膜过滤器的氧气分压的差异,以调节用于使氧气通过膜的驱动力。 实现了在100 /小时以上的液体空间速度下将喷气燃料中的氧浓度降低到小于10ppm。
    • 2. 发明授权
    • Active seal
    • 主动密封
    • US6142477A
    • 2000-11-07
    • US192768
    • 1998-11-16
    • Richard A. Meinzer
    • Richard A. Meinzer
    • F01D11/16F02C7/06F02C7/12
    • F01D11/16F02C7/06Y10S277/919
    • A seal assembly includes a seal element having a plurality of movable seal segments and further includes a plurality of actuators, each associated with a respective one of the seal segments. Each of the seal segments has a coil that generates electrical energy in the presence of a varying magnetic field. Each of the actuators receives energy from the associated seal segments and in response thereto produces a force that causes the segment to move toward or away from a surface on an opposing seal member.A method for fabricating a seal element for a gas turbine engine includes providing a wafer, forming seal segments on the wafer, dividing the wafer into a plurality of seal segments, and arranging at least two of the plurality of seal segments into a seal element.
    • 密封组件包括具有多个可移动密封段的密封元件,并且还包括多个致动器,每个致动器与相应的一个密封段相关联。 每个密封段具有在存在变化的磁场的情况下产生电能的线圈。 每个致动器从相关联的密封段接收能量,并且响应于此产生一个力,该力使得该段朝向或远离相对密封构件上的表面移动。 一种用于制造用于燃气涡轮发动机的发动机的密封元件的方法包括提供晶片,在晶片上形成密封段,将晶片分成多个密封段,并将多个密封段中的至少两个排列成密封元件。
    • 3. 发明授权
    • Semiconductor Laser Pumped molecular gas lasers
    • 半导体激光泵浦分子气体激光器
    • US5506857A
    • 1996-04-09
    • US980016
    • 1992-11-23
    • Richard A. Meinzer
    • Richard A. Meinzer
    • G02B6/42H01S3/036H01S3/08H01S3/094H01S3/0941H01S3/0943H01S3/22H01S3/223H01S5/00H01S5/068H01S5/40
    • H01S3/0941H01S3/223H01S3/094053H01S5/4012H01S5/4025
    • A gas laser cavity 44 comprising a molecular gas 52, such as a Hydrogen Halide, is pumped by a plurality of semiconductor lasers 20 which provide light carried along optical fibers 26 that provide divergent light 32 to a collimating lens 34 that provides collimated light 36 to a focussing lens 38 that provides pumping light 40 which propagates within the gas laser cavity 44 in a zig-zag pattern, thereby providing a homogeneously excited medium and providing sufficient pathlength to give adequate absorption of the pump light. The pump light 40 has a wavelength within the absorption frequency band of the gas 52 and a wavelength capable of pumping the gas molecules from the ground state to an excited state. Alternatively, the absorption frequency band of the gas 52 may be broadened by adding an inert gas, such as Argon, at a higher pressure than the Hydrogen Halide gas. Also, the output wavelength of the laser diodes 20 may be tuned to the center of the absorption frequency band of the gas 52 by adjusting the temperature of the diodes with thermoelectric coolers 28.
    • 包括分子气体52(例如卤化氢)的气体激光腔44由多个半导体激光器20泵送,所述半导体激光器20提供沿着光纤26携带的光,所述光纤26将发光32提供给准直透镜34,准直透镜34将准直光36提供给 提供泵浦光40的聚焦透镜38,其以锯齿形图案在气体激光腔44内传播,从而提供均匀激发的介质并提供足够的光程以给泵浦光充分吸收。 泵浦光40具有在气体52的吸收频带内的波长和能够将气体分子从基态泵浦到激发态的波长。 或者,可以通过在比氢卤化物气体更高的压力下添加诸如氩的惰性气体来扩大气体52的吸收频带。 此外,通过用热电冷却器28调节二极管的温度,激光二极管20的输出波长可以被调谐到气体52的吸收频带的中心。
    • 4. 发明授权
    • Laser diode liquid-level/distance measurement
    • 激光二极管液位/距离测量
    • US5257090A
    • 1993-10-26
    • US800336
    • 1991-11-27
    • Richard A. MeinzerBruce E. Zepke
    • Richard A. MeinzerBruce E. Zepke
    • G01F23/56G01F23/292G01F23/68G01S7/48G01S17/32G01S17/88G01B9/02
    • G01S17/32G01F23/292G01F23/686G01S17/88
    • A laser diode distance measurement device includes a laser diode assembly 10, comprising a laser diode and photodiode, which emits light 17 to a lens 19 which provides collimated light 20 incident on a float 22 which is covered with reflective tape on its top surface 24. The light 20 is reflected from the float 22 back to the laser diode assembly 10 which causes the assembly 10 to provide a signal having magnitude pulses (due to coherent interference) on a line 15 to a liquid level measurement circuit 14 related to the distance L to the float 22. Use of the collimated beam 20 and reflective tape on the float 22 minimizes speckle while providing adequate optical intensity feedback. The laser assembly 10 is driven by a sawtooth waveform signal that reduces electronic processing. The distance measurement circuit 14 blanks-out the feedback signal during discontinuities of the laser diode drive signal to minimize associated noise from distorting the distance measurement. Alternatively, the float may be omitted and the tube 11 made small enough to provide a meniscus effect curvature at a liquid surface 250 which provides a curved reflective surface to reflect the incident light 20, in a consistent fashion, back to the laser assembly 10.
    • 激光二极管距离测量装置包括激光二极管组件10,其包括激光二极管和光电二极管,其将光17发射到透镜19,透镜19提供入射在浮子22上的准直光20,浮子22在其顶表面24上被反射带覆盖。 光20从浮子22反射回激光二极管组件10,这导致组件10提供在线15上具有与距离L相关的液位测量电路14的幅度脉冲(由于相干干涉)的信号 浮子22上的准直光束20和反射带的使用最小化斑点,同时提供足够的光强度反馈。 激光组件10由减少电子处理的锯齿波形信号驱动。 距离测量电路14在激光二极管驱动信号不连续期间消除反馈信号,以使相关噪声最小化从而使距离测量失真。 或者,可以省略浮子并且管11制造得足够小以在液体表面250处提供弯月面效应曲率,其提供弯曲的反射表面,以一致的方式将入射光20反射回激光组件10。
    • 5. 发明授权
    • Fresnel lens based spectroscopic detector
    • 基于菲涅耳透镜的光谱检测器
    • US5212536A
    • 1993-05-18
    • US716873
    • 1991-06-18
    • Gary A. BallRichard A. Meinzer
    • Gary A. BallRichard A. Meinzer
    • G01J1/42G01J3/12G01J9/00
    • G01J3/02G01J3/0208G01J3/12G01J9/00
    • A detector for laser radiation that detects the presence of above-threshold radiation in one of a set of wavelength ranges employs a set of Fresnel lenses designed to focus radiation in a particular band onto a metal-coated film. A series of Fresnel lenses is designed with constant focal lengths, but each lens is designed to have that focal length at a specific wavelength. Only when the wavelength of the incident radiation matches the design wavelength of the Fresnel lens will the film be marked or machined. Radiation of differing wavelengths will be defocused to a degree that will reduce the intensity below the level that will mark or machine the film. An electronic based version of this spectroscopy detector can also be implemented.
    • 用于检测在一组波长范围中的阈值辐射的存在的用于激光辐射的检测器使用一组菲涅耳透镜,其设计成将特定带中的辐射聚焦到金属涂覆的膜上。 一系列菲涅尔透镜被设计成具有恒定的焦距,但是每个透镜被设计成具有特定波长的焦距。 只有当入射辐射的波长与菲涅耳透镜的设计波长相匹配时,膜才能被标记或加工。 不同波长的辐射将散焦到一定程度,这将降低低于标记或加工胶片的水平的强度。 也可以实现该光谱检测器的电子版本。
    • 6. 发明授权
    • Broadband optical limiter with sacrificial mirror to prevent irradiation
of a sensor system by high intensity laser radiation
    • 具有牺牲镜的宽带光限幅器,以防止高强度激光辐射对传感器系统的照射
    • US5153425A
    • 1992-10-06
    • US633554
    • 1990-12-24
    • Richard A. MeinzerSallie S. Townsend
    • Richard A. MeinzerSallie S. Townsend
    • G01S7/483
    • G01S7/483
    • A broadband optical limiter for use in combination with a sensor system is operative to prevent irradiation of the sensor system by laser radiation of unknown wavelengths having intensity levels sufficient to damage or disable the sensor system. The broadband optical limiter is further operative to throughput, with minimal optical distortion at wide angle fields of view, electromagnetic radiation in the operating spectral band(s) of the sensor system. The broadband optical limiter includes a flat or spherically shaped sacrificial mirror that is operative to reflect electromagnetic radiation in the operating spectral band(s) of the sensor system and to be optically machined, i.e., vaporized, by focused laser radiation of unknown wavelengths having intensity levels sufficient to damage or disable the sensor system to create a reflective dead spot. The reflective dead spot prevents the focused laser radiation from being throughputted to the sensor system. The broadband optical limiter further includes optical components to focus incident electromagnetic and laser raidation onto the sacrificial mirror, to turn incident electromagnetic and laser radiation out of the field of view of the sensor system, and to turn electromagnetic radiation reflected by the sacrificial mirror back into the field of view of the sensor system.
    • 与传感器系统组合使用的宽带光限制器可操作以防止具有足以损坏或禁用传感器系统的强度水平的未知波长的激光辐射照射传感器系统。 宽带光限制器进一步操作以在广角视场中具有最小光学失真的吞吐量,在传感器系统的工作光谱带中的电磁辐射。 宽带光学限制器包括平坦或球形的牺牲镜,其可操作以在传感器系统的工作光谱带中反射电磁辐射,并通过具有强度的未知波长的聚焦激光辐射进行光学加工,即汽化 水平足以损坏或禁用传感器系统以产生反射死点。 反射死点防止聚焦的激光辐射被传送到传感器系统。 宽带光限制器还包括光学部件,用于将入射的电磁和激光雷射聚焦到牺牲镜上,将入射的电磁和激光辐射转移到传感器系统的视场之外,并将牺牲镜反射的电磁辐射反射回 传感器系统的视野。