Production of polyfluoropropanols
    181.
    发明授权
    Production of polyfluoropropanols 失效
    生产聚氟丙烯

    公开(公告)号:US3714271A

    公开(公告)日:1973-01-30

    申请号:US3714271D

    申请日:1970-07-27

    Inventor: REGAN B

    CPC classification number: C07C29/58 C07C31/38

    Abstract: 1,1,3,3-Tetrafluoropropan-2-ol and 1,1,1,3,3-pentafluoropropan2-ol are prepared by the vapor phase catalytic halogen hydrogenolysis and carbonyl reduction of perhaloacetones with hydrogen employing a supported palladium on carbon catalyst.

    Abstract translation: 1,1,3,3-四氟丙-2-醇和1,1,1,3,3-五氟丙-2-醇通过汽相催化卤氢氢解和羰基还原全氢丙酮与氢气一起使用负载的钯制备 碳催化剂。

    Multiple piece clamp for connecting tubing
    182.
    发明授权
    Multiple piece clamp for connecting tubing 失效
    用于连接管道的多个夹紧夹

    公开(公告)号:US3709526A

    公开(公告)日:1973-01-09

    申请号:US3709526D

    申请日:1971-03-01

    Inventor: CROMIE H

    CPC classification number: F16L3/10 F16L23/04 F16L31/00 F16L37/244 F16L37/252

    Abstract: A clamp for securely holding ends of tubing together in end-toend relationship is disclosed, in which the tubing so held carries a flange about its end. The clamp comprises four separable sections of identical shape, in which each section has means for locking together with another section to form two identical clamp halves. Each clamp half defines a bore to receive and hold tubing. The bore has an enlarged portion to receive and hold the tuning flange. Each clamp half also defines arms and slots positioned so that the arms of each clamp half are capable of engaging the slots of the other clamp half to secure the two halves together with the tuning ends mounted in each clamp half being secured together in end-to-end relationship.

    Abstract translation: 公开了一种用于以端对端的关系将管道端部牢固地保持在一起的夹具,其中如此保持的管道围绕其端部装有凸缘。 夹具包括四个相同形状的可分离部分,其中每个部分具有用于与另一部分一起锁定以形成两个相同的夹具半部的装置。 每个夹具半部分定义一个孔以接收和保持管道。 孔具有用于接收和保持调谐法兰的扩大部分。 每个夹具半部还限定臂和槽,其定位成使得每个夹具半部的臂能够接合另一个夹具半部的槽,以将两个半部固定在一起,并将安装在每个夹具半部中的调谐端固定在一起 关系

    Conservation of transient pulses in analog to digital conversion
    185.
    发明授权
    Conservation of transient pulses in analog to digital conversion 失效
    瞬态脉冲在模拟数字转换中的保存

    公开(公告)号:US3689879A

    公开(公告)日:1972-09-05

    申请号:US3689879D

    申请日:1971-05-18

    Inventor: BURDICK THOMAS H

    CPC classification number: A61B5/04004 A61B5/7239 H03M1/124

    Abstract: A composite signal comprising an analog signal with transient pulses superimposed thereon is periodically sampled and each sample is converted to a digital value which is stored in a buffer register prior to transfer to a data processing unit. A special circuit comprising a differentiator and comparator continuously receives the composite signal, detects the transient pulses, and forces a value into the buffer register to represent each transient pulse, even though the pulse may occur during an interval when the composite signal is not being sampled by the normal analog to digital conversion circuit. The special circuit may include a counter which is preset to a value N so that the value representing a transient pulse may be forced into the buffer register during N successive cycles. This permits control of the width of the transient pulses when the digital data is reconverted to analog form.

    Abstract translation: 周期性地对包括叠加有瞬态脉冲的模拟信号的复合信号进行采样,并将每个采样转换为数字值,该数字值在传送到数据处理单元之前被存储在缓冲寄存器中。 包括微分器和比较器的特殊电路连续接收复合信号,检测瞬态脉冲,并强制将值输入到缓冲寄存器中以表示每个瞬态脉冲,即使该脉冲可能在复合信号未被采样的间隔期间发生 由正常的模数转换电路。 特殊电路可以包括预设为值N的计数器,使得在N个连续循环期间可以将表示瞬态脉冲的值强制进入缓冲寄存器。 当数字数据被转换为模拟形式时,这允许控制瞬态脉冲的宽度。

    Air block prevention system
    187.
    发明授权
    Air block prevention system 失效
    空气预防系统

    公开(公告)号:US3677242A

    公开(公告)日:1972-07-18

    申请号:US3677242D

    申请日:1971-01-11

    Inventor: SHAYE NAT

    CPC classification number: A61M5/36 A61M5/165 A61M5/38 A61M2205/7527

    Abstract: Air Block Prevention System for intravenous fluid administration sets or the like having a hydrophilic (i.e., wettable) filter utilizes a fluid filled purge line to permit air trapped above the filter when a solution container has run dry to be expressed from the fluid path so as to permit a continuation of fluid delivery to a patient without requiring withdrawal and reinsertion of the needle in the patient and without danger of air embolism.

    Abstract translation: 具有亲水(即可湿性)过滤器的静脉给药组等的空气阻止物防治系统利用流体填充的清除管线,以便当溶液容器已经从干燥流体流出时被流过过滤器上方的空气, 以允许持续向患者输送液体,而不需要在患者体内取出并重新插入针头,并且不会有空气栓塞的危险。

    Rotary fluid seal and distribution means for centrifuges
    188.
    发明授权
    Rotary fluid seal and distribution means for centrifuges 失效
    旋转流体密封和分离装置用于离心

    公开(公告)号:US3672564A

    公开(公告)日:1972-06-27

    申请号:US3672564D

    申请日:1969-11-12

    Abstract: A rotary seal for a centrifuge particularly usable in the process of cell washing for transferring fluid between a rotary member and a stationary member of an apparatus adapted to contain fluids. The rotary seal member comprises a hollow first housing, and a second housing disposed in the first housing in spaced relation therewith to define an annular chamber. One of the housings is rotatable in concentric relation relative to the other housing. A plurality of sealing means are transversely mounted between the first and second housings to divide the annular chamber into several separate sealed portions, and conduits lead from the exterior of both the first and second housings to separate sealed portions of the annular chamber.

    Abstract translation: 一种用于离心机的旋转密封件,其特别可用于细胞洗涤过程中,用于在适于容纳流体的装置的旋转构件和固定构件之间输送流体。 旋转密封构件包括中空的第一壳体和与第一壳体隔开的关系设置在第一壳体中以限定环形室的第二壳体。 其中一个壳体可以相对于另一个壳体以同心的方式旋转。 多个密封装置横向地安装在第一和第二壳体之间以将环形室分成几个单独的密封部分,并且导管从第一和第二壳体的外部引导到环形室的分离的密封部分。

    Needle guard
    189.
    发明授权
    Needle guard 失效
    针头保护

    公开(公告)号:US3658061A

    公开(公告)日:1972-04-25

    申请号:US3658061D

    申请日:1970-11-10

    Inventor: HALL JOHN P

    CPC classification number: A61M5/3216

    Abstract: A catheter needle guard unit having a hub with a cannula needle affixed therein to form a passageway through the hub and cannula, said needle being pointed at the distal end, and a needle guard means having a sleeve member with a longitudinal slot adapted to snap over the entire length of the needle in snug relationship therewith to form a protective closure over the point of the needle when in the closed position and swingably fastened to the hub through an intermediate flexible connecting section.

    Abstract translation: 一种导管针保护单元,其具有一个套管,套管上固定有一个套管,以形成一个通过轮毂和插管的通道,所述针头指向远端,针头保护装置具有套筒构件,该套管构件具有适于卡扣的纵向槽 针的整个长度与其紧密地关系,以在处于关闭位置时在针的点上形成保护性闭合,并通过中间柔性连接部可摆动地紧固到轮毂。

Patent Agency Ranking