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    • 3. 发明授权
    • Counterbalance apparatus with transverse pneumatic spring and bellcrank
linkage
    • 具有横向气动弹簧和曲拐连杆的平衡装置
    • US4788747A
    • 1988-12-06
    • US946203
    • 1986-12-19
    • George C. Ludwig
    • George C. Ludwig
    • E05F3/02B60J5/10E05F1/12F16F9/00F16F9/06F16F9/49E05F1/10
    • F16F9/061E05F1/1292F16F9/067F16F9/49E05Y2900/548Y10S16/36Y10T16/53885
    • A transversely mounted, single pneumatic spring, and dual bell crank and idler link assembly providing a compact counterbalance for hinged closures such as automobile trunk lids. In an automobile trunk installation, the assembly is installed with the spring in lateral disposition in the forward upper portion of the trunk, thus being effectively concealed. Alternative pneumatic spring enhancements, e.g., a multi-output force feature and a pressure decay compensation feature may be incorporated in the spring unit to enhance opening of the lid and to improve life expectancy of the pneumatic spring by minimizing and effectively negating pressure loss due to leakage of gas past the shaft seal. Excess spring cylinder length can provide space or volume zones used for the enhancement features. Structure which provides a multiple output force for the pneumatic spring, utilizes positioning of the spring shaft end bushing and seal to vary the working volume by changing effective cross-section area of the piston shaft near the end of a compression stroke. The extra cylinder length enables a sealed partition wall to separate extra volume and the operative volume part of the cylinder. The extra volume is filled with a supply of gas under higher pressure than that of the spring operative gas pressure and, in conjunction with permeability characterisitcs of the spring shaft seal and the partition wall seal, enables compensation for leakage from the cylinder. Multiple force output provisions can be used in a substantially vertically disposed spring, filled with a predetermined quantity of oil, and used as a liquid-pneumatic shock absorber. A supplemental orifice type disc valve unit can be used in such a shock absorber, located near the closed end of the spring cylinder.
    • 横向安装的单个气动弹簧和双钟形曲柄和惰轮连杆组件,为铰链封闭件(如汽车行李箱盖)提供紧凑的平衡。 在汽车后备箱的安装中,组件以横向配置的方式安装在主干的前部上部,从而被有效地隐藏。 可以在弹簧单元中引入替代的气动弹簧增强功能,例如多输出力特征和压力衰减补偿特征,以增强盖的打开,并通过最小化并有效地消除由于 气体泄漏通过轴封。 弹簧筒体长度过长可以提供用于增强功能的空间或体积区域。 为气动弹簧提供多重输出力的结构利用弹簧轴端衬套和密封件的定位,通过在压缩行程结束附近改变活塞轴的有效横截面面积来改变工作体积。 额外的气缸长度使得密封的分隔壁能够分离额外的体积和气缸的操作体积部分。 额外的体积填充有比弹簧工作气体压力高的压力气体供应,并且结合弹簧轴密封件和分隔壁密封件的渗透特性,能够补偿气缸的泄漏。 多个力输出装置可用于基本垂直布置的弹簧中,填充有预定量的油,并用作液体 - 气动减震器。 补充孔型盘式阀单元可用于位于弹簧缸封闭端附近的这种减震器中。
    • 4. 发明授权
    • Silicon nitride abrasive frit
    • 氮化硅磨料玻璃料
    • US4659341A
    • 1987-04-21
    • US737013
    • 1985-05-23
    • David C. LudwigRobert J. Dobbs
    • David C. LudwigRobert J. Dobbs
    • C09K3/14B24D3/00
    • C09K3/1409
    • An abrasive frit is disclosed comprising particles of a silicon nitride based material. The particles have essentially sharp edges and a particle size within the range of from about 0.5 to about 150 microns. An abrasive frit is disclosed as described above except that the edges of the particles are essentially smooth. A method is disclosed for producing a abrasive frit of silicon nitride based material. The method involves forming a body of silicon nitride based material, firing the body at a sufficient temperature for a sufficient time to form a relatively low density body which is then crushed to form fragmented material a portion of which comprises essentially sharp edged particles in the above given size range, followed by separating the particles from the balance of the fragmented material. At this point the sharp edged particles can be either polished to produce essentially smooth edges particles or left as is. The particles are then sintered at sufficient temperature and pressure for a sufficient time to form sintered material having a density of at least about 96% of the theoretical density of the silicon nitride based material. The sintered material is then deaggregated, followed by separating that portion of the sintered material having a particle size in the above given size range, which is the abrasive frit, from the balance of the deaggregated material.
    • 公开了一种包含氮化硅基材料颗粒的磨料玻璃料。 颗粒具有基本上锐利的边缘,并且粒度在约0.5至约150微米的范围内。 如上所述公开了磨料玻璃料,除了颗粒的边缘基本上是平滑的。 公开了一种用于生产氮化硅基材料磨料玻璃料的方法。 该方法包括形成一种基于氮化硅的材料,在足够的温度下烧制本体足够的时间以形成相对低密度的体,然后将其压碎形成碎片材料,其中一部分在上述部分包括基本上锋利的边缘颗粒 给定的尺寸范围,然后将颗粒与碎片材料的余量分离。 在这一点上,尖锐的边缘颗粒可以被抛光以产生基本平滑的边缘颗粒或者原样保留。 然后将颗粒在足够的温度和压力下烧结足够的时间以形成密度为氮化硅基材料的理论密度的至少约96%的烧结材料。 然后将烧结材料解聚集,然后从解离的材料的余量中分离出具有上述给定尺寸范围的粒度的烧结材料部分,即磨料玻璃料。
    • 6. 发明授权
    • Coachwork for a medically equipped vehicle
    • 医疗配备车辆的教练
    • US4339146A
    • 1982-07-13
    • US182323
    • 1980-08-28
    • J. C. Ludwig Lehmann
    • J. C. Ludwig Lehmann
    • A61G3/00
    • A61G3/001
    • A medically equipped vehicle has a cabin adapted to accommodate medical apparatus such as infusion flasks and respirators. These items of medical apparatus are located in containers 11, 12 which are pivotally fastened at 13 to a ceiling or associated part of the cabin. When not in use the apparatus can thus be stowed in an enclosed space defined between the container and the ceiling. The container can be pivoted downwardly to a hanging position in which the enclosed apparatus is readily accessible. To keep blood plasma and the like at the required temperature a heating device 41 or, a heat exchanger which can be used both for cooling and heating purposes, is incorporated in the container. The container is usefully of thermally insulated construction. Cables and lines necessary for the respirators and for infusion purposes are conveniently connected to the associated apparatus ready for use. Connections to auxiliary apparatus such, as oxygen bottles are conveniently made by ducting the connection lines through the ceiling of the vehicle.
    • 医疗装备的车辆具有适于容纳诸如输液瓶和呼吸器的医疗设备的舱室。 这些医疗装置物品位于容器11,12中,容器11,12以13为枢轴固定在舱室的天花板或相关部分。 当不使用时,该装置可因此被收纳在容器和天花板之间限定的封闭空间中。 容器可以向下枢转到悬挂位置,在该位置,封闭装置容易接近。 为了将血浆等保持在所需温度,加热装置41或可用于冷却和加热目的的热交换器被并入容器中。 该容器有利于隔热结构。 用于呼吸器和输液目的所需的电缆和线路方便地连接到准备使用的相关设备。 与辅助设备的连接,例如氧气瓶通过将连接线通过车辆的天花板引导而方便地制成。