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26 条记录 (耗时 0.019 秒)

    Proximity detector using inductive effect on oscillating circuit the charge of which is controlled by a pulse of short duration
    1.
    发明授权
    Proximity detector using inductive effect on oscillating circuit the charge of which is controlled by a pulse of short duration 失效
    接近检测器对振荡电路采用感应效应，其电荷由短持续时间的脉冲控制

    公开(公告)号：US4893076A

    公开(公告)日：1990-01-09

    申请号：US184853

    申请日：1988-04-22

    申请人： Didier Leonard ,  Jean M. Periot ,  Pierre Petit

    发明人： Didier Leonard ,  Jean M. Periot ,  Pierre Petit

    IPC分类号： H03K17/95

    CPC分类号： H03K17/9537

    摘要： A proximity detector is provided with an oscillating circuit generating cyclically an unsustained pseudo-oscillation. The detector includes a processing circuit having a comparator which compares the relaxation voltage of the oscillating circuit with a predetermined threshold and a logic circuit which generates control pulses with low duty ratio for a switch in series with the oscillating circuit and also an output signal as a function of the measurement pulses delivered by the comparator. The closure duration of the switch is substantially equal to half the pseudo-oscillation period.

    摘要翻译： 接近检测器设置有周期性地产生不间断的伪振荡的振荡电路。 该检测器包括具有比较器的处理电路，该比较器将振荡电路的松弛电压与预定阈值进行比较，并产生逻辑电路，该逻辑电路产生具有低占空比的控制脉冲，用于与振荡电路串联的开关，以及输出信号作为 由比较器传送的测量脉冲的功能。 开关的闭合持续时间基本上等于伪振荡周期的一半。

    Circuit for processing a pseudo-oscillatory signal, especially for inductive proximity detectors
    2.
    发明授权
    Circuit for processing a pseudo-oscillatory signal, especially for inductive proximity detectors 失效
    用于处理伪振荡信号的电路，特别是用于感应式接近检测器

    公开(公告)号：US4879512A

    公开(公告)日：1989-11-07

    申请号：US184852

    申请日：1988-04-22

    申请人： Didier Leonard ,  Jean-Marie Periot ,  Pierre Petit

    发明人： Didier Leonard ,  Jean-Marie Periot ,  Pierre Petit

    IPC分类号： G01B7/02 ,  G01D5/243 ,  G01R27/26 ,  H03K17/95

    CPC分类号： G01B7/023 ,  G01D5/243 ,  G01R27/2611 ,  H03K17/9537

    摘要： A circuit is provided for processing a pseudo-oscillatory signal generated by an oscillating circuit including a comparator and a logic circuit. The oscillating circuit has a first terminal connected to an energy source by a first switch and a second terminal referenced alternately to a potential substantially equal to half the high potential of the power supply and to the low potential of the power supply. This alternate reference is determined by a second switch controlled synchronously with the first switch by the logic circuit.

    摘要翻译： 提供一种用于处理由包括比较器和逻辑电路的振荡电路产生的伪振荡信号的电路。 振荡电路具有通过第一开关和第二端子连接到能量源的第一端子，该第一端子交替地被引用至基本上等于电源的高电位的一半和电源的低电位的电位。 该替代参考由由逻辑电路与第一开关同步控制的第二开关确定。

    Method for cooling a gaseous mixture to a low temperature
    5.
    再颁专利
    Method for cooling a gaseous mixture to a low temperature 失效

    公开(公告)号：USRE30140E

    公开(公告)日：1979-11-06

    申请号：US501246

    申请日：1974-08-28

    申请人： Maurice Grenier ,  Pierre Petit

    发明人： Maurice Grenier ,  Pierre Petit

    IPC分类号： C07C7/09 ,  C08G77/00 ,  C10G5/06 ,  F25J1/00 ,  F25J3/02

    CPC分类号： F25J3/0257 ,  C07C7/09 ,  C08G77/00 ,  C10G5/06 ,  F25J1/0022 ,  F25J1/004 ,  F25J1/0045 ,  F25J1/0055 ,  F25J1/0202 ,  F25J1/0212 ,  F25J1/0231 ,  F25J1/0237 ,  F25J1/0249 ,  F25J1/025 ,  F25J3/0209 ,  F25J3/0233 ,  F25J3/0242 ,  F25J3/0247 ,  F25J2200/02 ,  F25J2200/50 ,  F25J2200/70 ,  F25J2200/74 ,  F25J2200/76 ,  F25J2200/80 ,  F25J2205/04 ,  F25J2215/04 ,  F25J2215/64 ,  F25J2215/66 ,  F25J2270/12 ,  F25J2290/34

    摘要： .Iadd. .Iadd.8. A method for cooling a second gaseous mixture to low temperature and producing at least one constituent of said mixture in liquid phase, comprising:a. cooling and subjecting first gaseous mixture containing at least one component of said secong gaseous mixture, to a fractionate condensation under a first pressure,b. expanding at least two condensed fractions obtained during the fractionate condensation of said first gaseous mixture, reuniting the expanded condensed fractions with said first gaseous mixture under a second pressure lower than said first pressure, vaporizing and reheating the reunited fractions with said first gaseous mixture under said second pressure, by heat exchange with said second gaseous mixture undergoing cooling, and with said first gaseous mixture undergoing fractionate condensation, and recompressing said first gaseous mixture to said first pressure,c. reuniting under said first pressure said second gaseous mixture undergoing cooling with said first gaseous mixture undergoing fractionate condensation, when said gaseous mixture is in conditions of temperature and pressure such that a major portion of said constituent to be produced in liquid phase is condensed within said second gaseous mixture, and after the first condensed fraction of said first gaseous mixture has been withdrawn for expansion and vaporization, continuing the fractionate condensation of the mixture so obtained under said first pressure until there is obtained a last condensed fraction containing a major part of said constituent to be produced in liquid phase,d. expanding to said second pressure the last condensed fraction, and separating the last expanded fraction into a liquid portion expanded to a pressure lower than said second pressure and a residual gaseous portion for recompression with said first gaseous mixture, and withdrawing said last expanded liquid portion as a product stream, ande. prior to reuniting said first gaseous mixture and said second gaseous mixture, condensing at least partially said second gaseous mixture under a third pressure which is higher than said first pressure, and expanding said second gaseous mixture at least partially condensed to said first pressure. .Iaddend.

    Process for the separation of gaseous mixtures by adsorption with pressure variation
    10.
    发明授权
    Process for the separation of gaseous mixtures by adsorption with pressure variation 失效
    通过压力变化吸附分离气体混合物的方法

    公开(公告)号：US6051052A

    公开(公告)日：2000-04-18

    申请号：US970431

    申请日：1997-11-14

    申请人： Christian Monereau ,  Philippe Andreani ,  Pierre Petit

    发明人： Christian Monereau ,  Philippe Andreani ,  Pierre Petit

    IPC分类号： B01D53/053 ,  B01D53/047

    CPC分类号： B01D53/053 ,  B01D2256/12 ,  B01D2259/40016 ,  B01D2259/40075 ,  B01D2259/40079 ,  B01D2259/40081 ,  B01D53/0446

    摘要： A separation process, involving an adsorber containing at least one adsorbent with an inlet and outflow, involves the following stages of the cycle:--stage I, repressurization from the low pressure of the cycle;--stages II and III during one of which the high pressure of the cycle is reached; and stage IV, depressurization/purging, during which the low pressure of the cycle is reached. Each stage (I to IV) involves a fixed gas flow (F) at one end of the adsorber and a free gas flow (.lambda.) at the other end of the adsorber, the fixed flows (F) addressing the inlet (E) and outlet (F) ends of the adsorber from one stage (I to IV) to the next. The process is particularly applicable to the production of oxygen from air.

    摘要翻译： 涉及包含至少一种具有入口和流出物的吸附剂的吸附器的分离过程涉及循环的以下阶段：阶段I，从循环的低压重新加压; - 在其中之一中的第二和第三阶段 达到循环压力; 和第四阶段，减压/清洗，在此期间达到循环的低压。 每个阶段（I至IV）涉及吸附器一端的固定气流（F）和吸附器另一端的自由气流（λ），位于入口（E）的固定流（F）和 吸附器的出口（F）端从一个阶段（I至IV）到下一个阶段。 该方法特别适用于从空气中产生氧气。