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161 条记录 (耗时 0.038 秒)

    Performance arcjet thruster
    1.
    发明授权
    Performance arcjet thruster 失效
    电弧喷射推进器

    公开(公告)号：US4926632A

    公开(公告)日：1990-05-22

    申请号：US150591

    申请日：1988-02-01

    申请人： Richard D. Smith ,  Steve Knowles ,  R. J. Cassady ,  William Smith ,  Mark A. Simon

    发明人： Richard D. Smith ,  Steve Knowles ,  R. J. Cassady ,  William Smith ,  Mark A. Simon

    IPC分类号： F03H1/00

    CPC分类号： B64G1/406

    摘要： An arcjet thruster has a body defining a constrictor and nozzle constituting an anode and forming an arc chamber. An elongated rod constitutes a cathode spaced from the constrictor by a gap generally coextensive with the arc chamber. An electrical potential is applied to the anode and cathode to generate an electrical arc in the arc chamber from the cathode to the anode. Propellant is supplied to the arc chamber with generation of the arc so as to produce thermal heating and expansion of the propellant through the nozzle. The thruster employs several features which improve its performance. One feature relates to the use of propellant blends with high specific impulse additives. Another feature relates to injection of the high specific impulse additive into the bulk propellant feed at the region of the cathode tip. Still another feature relates to recirculation of a small fraction of propellant from the constrictor region of the arc chamber and injection thereof into the bulk propellant feed at the region of the cathode tip. A final feature relates to regeneration and reaction of the bulk propellant feed within the structure of the anode body and circulation to the region of the cathode tip.

    摘要翻译： 电弧喷射推进器具有限定构成阳极的缩颈和喷嘴的主体并形成电弧室。 细长杆构成通过与电弧室大致共同延伸的间隙与收缩器间隔开的阴极。 向阳极和阴极施加电势，以在电弧室中从阴极到阳极产生电弧。 通过产生电弧将推进剂供应到电弧室，以便通过喷嘴产生推进剂的热加热和膨胀。 推进器采用了几个提高其性能的特征。 一个特征涉及使用具有高比冲量添加剂的推进剂混合物。 另一个特征涉及在阴极尖端的区域将高比冲量添加剂注入本体推进剂​​进料中。 另一个特征涉及一小部分推进剂从电弧室的缩颈区域的再循环，并将其注入到阴极尖端区域的本体推进剂​​进料中。 最后的特征涉及本体推进剂​​进料在阳极体结构内的再生和反应，并循环到阴极尖端的区域。

    Performance arcjet thruster
    2.
    发明授权
    Performance arcjet thruster 失效
    电弧喷射推进器

    公开(公告)号：US4995231A

    公开(公告)日：1991-02-26

    申请号：US411798

    申请日：1989-09-25

    申请人： Richard D. Smith ,  Steve Knowles ,  R. J. Cassady ,  William Smith ,  Mark A. Simon

    发明人： Richard D. Smith ,  Steve Knowles ,  R. J. Cassady ,  William Smith ,  Mark A. Simon

    IPC分类号： F03H1/00

    CPC分类号： B64G1/406

    摘要： An arcjet thruster has a body defining a constrictor and nozzle constituting an anode and forming an arc chamber. An elongated rod constitutes a cathode spaced from the constrictor by a gap generally coextensive with the arc chamber. An electrical potential is applied to the anode and cathode to generate an electrical arc in the arc chamber from the cathode to the anode. Propellant is supplied to the arc chamber with generation of the arc so as to produce thermal heating and expansion of the propellant through the nozzle. The thruster employs several features which improve its performance. One feature relates to the use of propellant blends with high specific impulse additives. Another feature relates to injection of the high specific impulse additive into the bulk propellant feed at the region of the cathode tip. Still another feature relates to recirculation of a small fraction of propellant from the constrictor region of the arc chamber and injection thereof into the bulk propellant feed at the region of the cathode tip. A final feature relates to regeneration and reaction of the bulk propellant feed within the structure of the anode body and circulation to the region of the cathode tip.

    摘要翻译： 电弧喷射推进器具有限定构成阳极的缩颈和喷嘴的主体并形成电弧室。 细长杆构成通过与电弧室大致共同延伸的间隙与收缩器间隔开的阴极。 向阳极和阴极施加电势，以在电弧室中从阴极到阳极产生电弧。 通过产生电弧将推进剂供应到电弧室，以便通过喷嘴产生推进剂的热加热和膨胀。 推进器采用了几个提高其性能的特征。 一个特征涉及使用具有高比冲量添加剂的推进剂混合物。 另一个特征涉及在阴极尖端的区域将高比冲量添加剂注入本体推进剂​​进料中。 另一个特征涉及一小部分推进剂从电弧室的缩颈区域的再循环，并将其注入到阴极尖端区域的本体推进剂​​进料中。 最后的特征涉及本体推进剂​​进料在阳极体结构内的再生和反应，并循环到阴极尖端的区域。

    Lifetime arcjet thruster
    3.
    发明授权
    Lifetime arcjet thruster 失效
    终身弧射推进器

    公开(公告)号：US4907407A

    公开(公告)日：1990-03-13

    申请号：US154405

    申请日：1988-02-10

    申请人： Mark A. Simon ,  Steve Knowles ,  William Smith

    发明人： Mark A. Simon ,  Steve Knowles ,  William Smith

    IPC分类号： F03H1/00

    CPC分类号： B64G1/406

    摘要： An arcjet thruster has an anode body forming a constrictor and a nozzle which define an arc chamber. The thruster also has a cathode in the form of a rod having a tip and being spaced upstream from the constrictor. The thruster employs several features which reduce anode and cathode erosion and increase the operational life of the thruster. One set of features relate to the employment of cathode and anode shaping. Another feature relates to the use of a propellant injector having a series of radially and tangentially arranged passages for providing direct injection of propellant gas into the arc chamber and enhanced convective cooling of the anode.

    摘要翻译： 电弧喷射推进器具有形成缩颈的阳极体和限定电弧室的喷嘴。 推进器还具有呈杆状形式的阴极，该阴极具有尖端并且与缩颈部的上游间隔开。 推进器采用几个特点，减少阳极和阴极侵蚀，并增加推进器的使用寿命。 一组特征涉及使用阴极和阳极成型。 另一个特征涉及使用具有一系列径向和切向布置的通道的推进剂喷射器，用于将推进剂气体直接喷射到电弧室中并增强阳极的对流冷却。

    Reclining Chair Assembly
    5.
    发明申请
    Reclining Chair Assembly 有权

    公开(公告)号：US20220257018A1

    公开(公告)日：2022-08-18

    申请号：US17178305

    申请日：2021-02-18

    申请人： William Smith

    发明人： William Smith

    IPC分类号： A47C1/024 ,  A47C7/50

    摘要： A reclining chair assembly includes a reclining chair that has a backrest portion and a chair portion for having a user sit therein. A pair of footrests is each disposed on the chair portion of the reclining chair and each of the footrests is positionable in a lowered position or a raised position to raise the respective user's leg. Moreover, the pair of footrests is independently positionable in the raised position to facilitate one of the user's legs to be lifted while the other of the user's legs is not lifted. A pair of lifting units is each in mechanical communication with a respective one of the pair of footrests. Each of the lifting units independently urges the respective footrest into the raised position or the lowered position.

    Transient Protection Filter Circuit that Minimizes the Effects of Thermal Runaway
    8.
    发明申请
    Transient Protection Filter Circuit that Minimizes the Effects of Thermal Runaway 审中-公开
    瞬态保护滤波电路，尽可能减少热失控的影响

    公开(公告)号：US20140362485A1

    公开(公告)日：2014-12-11

    申请号：US13911305

    申请日：2013-06-06

    申请人： William Smith

    发明人： William Smith

    IPC分类号： H02H9/04

    CPC分类号： H02H9/04 ,  H02H9/001 ,  H02H9/041 ,  H02H9/042

    摘要： Commonly, a transient protection filter circuit is integrated between power sources and the circuits that follow to suppress voltage transients. Pre-existing transient protection filters are implemented such that when a transient is detected, transistors in the path become linear regulators. Instead, this invention uses bridge resistors to form a voltage divider to dissipate the extra power. The novelty of this invention is that it protects the load not by dissipating the extra power in front of the load as other transient protection filter circuits do, but by providing energy from the transient to the load through a resistor. This implementation solves the problem of thermal runaway that is commonly caused when transient voltages are filtered by dissipating power within the transistors in the path of the transient and the electric circuits after the transistors.

    摘要翻译： 通常，瞬态保护滤波器电路集成在电源和随后的电路之间以抑制电压瞬变。 实现了现有的瞬态保护滤波器，使得当检测到瞬态时，路径中的晶体管变为线性稳压器。 相反，本发明使用桥式电阻器来形成分压器以耗散额外功率。 本发明的新颖之处在于，其它瞬态保护滤波器电路不是通过消耗负载前面的额外功率来保护负载，而是通过电阻将瞬态能量提供给负载。 该实现解决了当瞬态电压通过在晶体管之后的瞬态路径和电路中的晶体管内消耗功率而被滤波时通常引起的热失控的问题。