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1.发明授权Power supply topology enabling bipolar voltage output from a single voltage input 失效电源拓扑结构，使单电压输入双极性电压输出
公开(公告)号：US5500721A
公开(公告)日：1996-03-19
申请号：US367608
申请日：1995-01-03
摘要： A power supply circuit which converts an A.C. signal into an output signal that combines A.C. and D.C. voltages components. The circuit uses a voltage doubler topology with transistors. The transistors are controlled by waveform generators, which generate a series of pulses. By adjusting the duty cycle of the pulses, the appropriate D.C. voltages components can be formed. By adjusting the duty cycle of the positive output producing pulses and negative output producing pulses relative to each other, the required A.C. signal can be adjusted. A scavengeless developer in a xerographic machine requires three bias voltage inputs. The power supply circuit can be attached to a transformer connected to an appropriate A.C. power source to produce the required voltage signals to control the operation of the developer.
摘要翻译： 一种电源电路，其将交流信号转换成结合了直流和直流电压分量的输出信号。 该电路使用具有晶体管的倍压器拓扑结构。 晶体管由波形发生器控制，产生一系列脉冲。 通过调整脉冲的占空比，可以形成适当的直流电压分量。 通过调节相对于彼此的正输出产生脉冲和负输出产生脉冲的占空比，可以调节所需的交流信号。 在静电复印机中的无痕显影剂需要三个偏置电压输入。 电源电路可以连接到连接到适当的交流电源的变压器，以产生所需的电压信号以控制显影剂的操作。
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公开(公告)号：US3991992A
公开(公告)日：1976-11-16
申请号：US571189
申请日：1975-04-24
CPC分类号： G03G17/04
摘要： A web drive system consisting of two independent speed controlled servos used to drive at least two webs is provided for use in a photoelectrophoretic web machine. The servo drive systems cooperate in the transporting of the webs to eliminate speed differential tensions between the two webs held together by friction and electrical tacking force. The first servo system may be bi-polar controlled. The second servo system may be uni-polar controlled and switched between speed and torque control modes. When the webs are held apart, the second servo system will be in speed control and whenever the webs are in contact, the second servo system is switched to the torque control mode.
摘要翻译： 提供了用于驱动至少两个幅材的由两个独立的速度控制的伺服机构组成的卷筒纸驱动系统，用于光电网幅机。 伺服驱动系统配合输送腹板，以消除通过摩擦和电气紧固力保持在一起的两个腹板之间的速度差动张力。 第一伺服系统可以是双极控制的。 第二伺服系统可以单向控制，并在速度和转矩控制模式之间切换。 当腹板被分开时，第二伺服系统将处于速度控制中，并且每当腹板接触时，第二伺服系统被切换到转矩控制模式。
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3.发明授权Method and apparatus for forming and utilizing a slotted MPEG transport stream 失效用于形成和利用时隙MPEG传输流的方法和装置公开(公告)号：US07035278B2
公开(公告)日：2006-04-25
申请号：US09126884
申请日：1998-07-31
IPC分类号： H04L12/43
CPC分类号： H04N21/23608 , H04L29/06 , H04L67/325 , H04L69/28 , H04L69/329
摘要： A method and apparatus for forming and processing an MPEG transport stream such that programs may be inserted into, or deleted from, the MPEG transport stream without significant retiming operations.
摘要翻译： 一种用于形成和处理MPEG传输流的方法和装置，使得程序可以被插入到MPEG传输流中或从MPEG传输流中删除，而无需重新定时操作。
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公开(公告)号：US4553191A
公开(公告)日：1985-11-12
申请号：US446738
申请日：1982-12-03
CPC分类号： H05F3/00
摘要： A device for neutralizing static electric charge on a surface comprising a support means, a plurality of resilient, flexible thin fibers having an electrical resistivity of from about 2.times.10.sup.3 ohm-cm to about 1.times.10.sup.6 ohm-cm., the fibers being supported by the support means in such manner that the fibers are oriented and extend in a uniform direction, in a brush like configuration from the support means so that the distal ends of the fibers may extend toward a surface which has a static charge which one wishes to neutralize. Preferably, the resilient fibers have a resistivity of from about 4.times.10.sup.4 ohm-cm. to about 4.times.10.sup.5 ohm-cm., and are arranged in a linear array of spaced discrete bundles of fibers in a conductive potting composition in the support holder. Preferably the fibers are made of a partially carbonized polyacrylonitrile fiber and the device may be used in an electrostatographic reproducing machine having at least one dicorotron charging device.
摘要翻译： 一种用于中和表面上的静电荷的装置，包括支撑装置，多个具有约2×103ohm-cm至约1×10 6欧姆 - 厘米的电阻率的弹性柔性薄纤维，所述纤维由支撑装置支撑 以这样的方式使得纤维沿着均匀的方向定向并沿着支撑装置的刷状构造延伸，使得纤维的远端可以朝着具有希望中和的静电荷的表面延伸。 优选地，弹性纤维具有约4×10 4欧姆 - 厘米的电阻率。 到约4×10 5欧姆 - 厘米3，并且在支撑保持器中的导电灌封组合物中布置成间隔开的分开的纤维束的线性阵列。 优选地，纤维由部分碳化的聚丙烯腈纤维制成，并且该装置可以用于具有至少一个二甲基氰充电装置的静电复制机。
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公开(公告)号：US4295333A
公开(公告)日：1981-10-20
申请号：US56652
申请日：1979-07-11
申请人： Wayne M. Camirand , John M. Randall , Earl Hautala
发明人： Wayne M. Camirand , John M. Randall , Earl Hautala
摘要： Fresh water and mechanical energy are obtained from melting of icebergs. Warm surface seawater is contacted with a fluid, which is vaporized. The resulting vapor is used to generate mechanical energy and then is condensed by contacting it with cold melt water from the iceberg. The fluid is regenerated with a concomitant elevation in the temperature of the melt water. The warmer melt water is cycled to the body of the iceberg to facilitate its melting and produce additional cold melt water, which is apportioned as fresh water and water cycled to condense the aforesaid vapor.In an alternate embodiment of the invention warm seawater is evaporated at reduced pressure. Mechanical energy is generated from the vapor, which is then condensed by direct and intimate contact with cold melt water from the iceberg. The resultant fresh water is a mixture of condensed vapor and melt water from the iceberg and has a temperature greater than the cold melt water. This fresh water mixture is contacted with the body of the iceberg to further melt it; part of the cold melt water is separated as fresh water and the remainder is cycled for use in condensing the vapor from the warm surface seawater.
摘要翻译： 淡水和机械能源来自冰山融化。 温表面海水与被蒸发的流体接触。 所得蒸汽用于产生机械能，然后通过与冰山的冷熔水接触而冷凝。 流体在熔融水的温度伴随升高的情况下再生。 较热的熔融水循环到冰山体，以便其熔化并产生额外的冷熔水，其分配为淡水和水循环以冷凝上述蒸气。 在本发明的另一个实施方案中，温热海水在减压下蒸发。 从蒸汽产生机械能，然后通过与冰山的冷熔水直接和紧密接触来冷凝。 所得淡水是来自冰山的冷凝蒸汽和熔融水的混合物，并且具有比冷熔融水大的温度。 将这种淡水混合物与冰山体接触以进一步熔化; 冷水的一部分被分离为淡水，其余部分循环用于冷凝来自温暖表面海水的蒸气。
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公开(公告)号：US3944415A
公开(公告)日：1976-03-16
申请号：US555489
申请日：1975-03-05
CPC分类号： C02F1/286 , C22B3/24 , C22B43/00 , Y02P10/234
摘要： Heavy metal ions are removed from water by contact with formaldehyde-modified nut waste or tree bark.
摘要翻译： 通过与甲醛改性的坚果废物或树皮接触，从水中除去重金属离子。
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