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    • 12. 发明公开
    • Landing gear mechanism for use on rough runways
    • Fahrwerkfürunebene Rollbahn。
    • EP0299588A2
    • 1989-01-18
    • EP88201744.5
    • 1985-08-19
    • Pneumo Abex Corporation
    • Hrusch, Louis C.
    • B64C25/60F16F9/46
    • F16F9/49B64C25/60
    • Landing gear mechanism includes a built-in hydraulic actuator (30) which may be actuated to provide a heavy load range, soft spring rate during take-off with a heavy take-off weight and a lower load range, softer spring rate after take-off and prior to landing with a lighter landing weight to yield more shock strut stroke for a given range of vertical load during landing. A special taxi valve (45) allows for some fluid to bypass the main orifice (15) more freely to and from the lower piston damping chamber (54) to the shock strut air-oil chamber (20) as soon as the landing energy stroke is complete to greatly reduce or eliminate high damping loads that might otherwise take place as the gear negotiates bumps. Such a valve may automatically be set to close for landing by the action of the gear extension during a subsequent take-off, thus reactivating the main orifice. For normal bounce, air in the primary chamber (20) drives oil through an orifice (69) in a rebound damper valve (65) to the lower piston chamber (54) in order to lift the supported weight of the aircraft as part of the return stroke. However, when riding over a hole, the air acts freely on the differential or net piston area of the gear which is too small to lift the supported weight of the aircraft, but is large enough to accelerate the unsprung mass of the gear quickly into the hole. An anti-cavitation bypass valve (62) assures oil refill in the lower portion of the piston chamber as the gear extends. Also, a pressure actuated valve (71) may be provided in the metering pin (10) which, upon sensing cavitation in the lower piston chamber (54) during extension, will open a series of holes (72, 73) both above and below the main orifice (15), providing a flow path for oil around the main orifice, to eliminate the aforementioned cavitation. The metering pin is part of this flow path. A check valve (95) may be provided at the top of the metering pin to keep the metering pin full of oil by allowing free flow of oil upward but not allowing downward flow, thus preventing the intake and down flow of shock strut air during the anti-cavitation re-fill of the lower piston chamber. An extension snubber valve (116) may also be provided to develop piston rebound damping during the last portion of stroke of the landing gear before full extension thereof during take-off.
    • 起落架机构包括一个内置的液压执行器(30),其可以被致动以提供重的载荷范围,在起飞时的软弹簧速率具有较大的起飞重量和较低的载荷范围, 在降落之前和降落之前,在着陆期间给定的垂直载荷范围内产生更多的冲击支柱行程。 特殊的出水阀(45)允许一些流体在着陆能量冲程一旦更靠近或从下活塞阻尼室(54)向冲击支柱空气 - 油室(20)绕过主孔(15) 是完全的,以大大减少或消除高阻尼负载,否则当齿轮协商碰撞时可能会发生。 这样的阀可以在随后的起飞期间通过齿轮延伸的作用自动地设定为关闭,从而重新激活主孔。 对于正常的反弹,主室(20)中的空气通过位于下活塞室(54)的回弹阻尼器阀(65)中的孔口(69)驱动油,以便提升飞机的支撑重量,作为 回程。 然而,当骑在一个孔上时,空气在​​齿轮的差速或净活塞区域上自由地作用,该区域太小而不能提升飞机的支撑重量,但是足够大以将齿轮的簧下质量快速地加速到 孔。 防气蚀旁通阀(62)在齿轮延伸时确保活塞室下部的补油。 此外,压力致动阀(71)可以设置在计量销(10)中,其在延伸期间在感测下活塞室(54)中的气蚀时将在上下方向打开一系列孔(72,73) 主孔口(15),为主孔口周围的油提供流动路径,以消除上述空化现象。 计量销是该流路的一部分。 可以在计量销的顶部设置止回阀(95),以通过允许向上自由流动但不允许向下流动而使计量销保持在油位上,从而防止在该期间的冲击支柱空气的进入和下流 下部活塞室的反气蚀再填充。 还可以设置延伸缓冲阀(116),以在起落架的全部延伸期间在起落架的行程的最后部分期间形成活塞回弹阻尼。
    • 15. 发明公开
    • Landing gear mechanism for use on rough runways
    • 飞机起落架不均匀的跑道。
    • EP0212022A1
    • 1987-03-04
    • EP85305889.9
    • 1985-08-19
    • Pneumo Abex Corporation
    • Hrusch, Louis C.
    • B64C25/60F16F9/46
    • F16F9/06B64C25/60F16F9/512
    • Landing gear mechanism includes a built-in hydraulic actuator (30) which may be actuated to provide a heavy load range, soft spring rate during take-off with a heavy take-off weight and a lower load range, softer spring rate after take-off and prior to landing with a lighter landing weight to yield more shock strut stroke for a given range of vertical load during landing. A special taxi valve (45) allows for some fluid to bypass the main orifice (15) more freely to and from the lower piston damping chamber (54) to the shock strut air-oil chamber (20) as soon as the landing energy stroke is complete to greatly reduce or eliminate high damping loads that might otherwise take place as the gear negotiates bumps. Such a valve may automatically be set to close for landing by the action of the gear extension during a subsequent take-off, thus reactivating the main orifice. For normal bounce, air in the primary chamber (20) drives oil through an orifice (69) in a rebound damper valve (65) to the lower piston chamber (54) in order to lift the supported weight of the aircraft as part of the return stroke. However, when riding over a hole, the air acts freely on the differential or net piston area of the gear which area is too small to lift the supported weight of the aircraft, but is large enough to accelerate the unsprung mass of the gear quickly into the hole. An anti-cavitation bypass valve (62) assures oil refill in the lower portion of the piston chamber as the gear extends. Also, a pressure actuated valve (71) may be provided in the metering pin (10) which, upon sensing cavitation in the lower piston chamber (54) during extension, will open a series of holes (72, 73) both above and below the main orifice (15), providing a flow path for oil around the main orifice, to eliminate the aforementioned cavitation. The metering pin is part of this flow path. A check valve (95) may be provided at the top of the metering pin to keep the metering pin full of oil by allowing free flow of oil upward but not allowing downward flow, thus preventing the intake and down flow of shock strut air during the anti-cavitation re-fill of the lower piston chamber. An extension snubber valve (116) may also be provided to develop piston rebound damping during the last portion of stroke of the landing gear before full extension thereof during take-off.
    • 16. 发明公开
    • Limited angle torque motor
    • 伺服电机具有有限的角运动。
    • EP0160132A1
    • 1985-11-06
    • EP84302746.7
    • 1984-04-24
    • Pneumo Abex Corporation
    • Vanderlaan, Robert D.Meulendyk, John W.
    • H02K26/00H02K5/128
    • H01F7/145H02K5/1285H02K26/00
    • A two pole stationary coil rotary magnet motor (1) which provides for increased work and reduced rotary inertia. The motor consists of two main assemblies, a rotor assembly (2) contained within a rotor casing (3) and a stator and housing assembly (4) surrounding the rotor casing. One end of the casing is closed, whereas the other end is open to eliminate the need for a dynamic shaft seal. Fluid enters the casing at the open end (12) thereof to provide a lubricating fluid for the rotor bearings (7, 8) and a heat conductive path. The rotor casing isolates the critical movement of the rotor (6) from the contaminated atmosphere of the stator environment and allows replacement of the stator assembly (4) without disturbing the rotor assembly. A permanent magnet rotor (6) may be formed using one or more rare earth magnets (45) which may be suitably bonded to the rotor shaft. A protective cover (49) surrounds the rotor magnets to eliminate potential rotor magnet breakage contamination. The relationship between the rotor magnet angle and stator winding (40, 41) may be such as to produce a relatively large output work potential. Also, the lamination slot configuration and stator winding may be graded to optimize the torque versus rotation profile to more closely match the cosine function of various rotary to linear output gearing to provide a substantially constant force output.
    • 19. 发明公开
    • Opposed piston type free piston engine pump unit
    • Einheit aus Freikolbenmotor und Pumpe。
    • EP0085800A2
    • 1983-08-17
    • EP82300655.6
    • 1982-02-10
    • Pneumo Abex Corporation
    • Vanderlaan, Robert D.
    • F04B17/00F04B49/00
    • F04B17/05
    • A free piston engine pump converts combustion energy into hydraulic power in an efficient, controlled and relatively uncomplicated manner, for example, for vehicle propulsion, auxiliary system power, etc. The free piston engine pump is substantially naturally mass balanced having opposed engine pistons 5, driving respective in-line hydraulic pumps 3. An adjustable accumulator 49 with a deformable fluid-tight chamber 50 containing a compressible fluid stores and delivers energy for compression, and an arrangement of control valves 67-69 and check valves 62, 63, 65, 66 enables selective operation of the free piston engine pump in primary (high flow) and secondary (high pressure) modes. Plural free piston engine pumps la, 1b, may be interfaced for parallel operation sharing common elements 53', 64' and functions. Cycle rate, intermittent operation and start-up also may be controlled. Electronic monitoring and control 150 of one or more operational parameters of a free piston engine pump also are disclosed.
    • 自由活塞发动机泵以高效,受控和相对简单的方式将燃烧能量转换为液压动力,例如用于车辆推进,辅助系统动力等。自由活塞发动机泵基本上是天然的质量平衡的,具有相对的发动机活塞5, 驱动相应的在线液压泵3.具有包含可压缩流体的可变形流体密封室50的可调累积器49存储并输送用于压缩的能量,并且配置控制阀67-69和止回阀62,63,65 66允许在初级(高流量)和次级(高压)模式中选择性地操作自由活塞式发动机泵。 多个自由活塞式发动机泵1a,1b可以被接口用于并行操作共同共同的元件53分钟,64分钟和功能。 循环速率,间歇操作和启动也可以被控制。 还公开了一种自由活塞式发动机泵的一个或多个操作参数的电子监视和控制150。