公开(公告)号：US4001078A

公开(公告)日：1977-01-04

申请号：US556318

申请日：1975-03-07

Applicant: David W. Doll

Inventor： David W. Doll

IPC: G21C7/11 ,  G21C7/14 ,  G21C7/08

CPC classification number: G21C7/11 ,  G21Y2002/201 ,  G21Y2002/50 ,  G21Y2004/30 ,  Y02E30/39

Abstract: A nuclear reactor system is described in which flexible control rods are used to enable insertion of the control rods into guide holes in the core which are distributed over an area larger than the cross section of the control rod penetration in the reactor pressure vessel. Guide tubes extend from the penetration and fan out to the guide holes for guiding the control rods from the penetration to the guide holes.

公开(公告)号：US08812069B2

公开(公告)日：2014-08-19

申请号：US12693158

申请日：2010-01-25

Applicant: David W. Doll ,  Michael J. Tomsic

Inventor： David W. Doll ,  Michael J. Tomsic

IPC: H01B12/00 ,  H01L39/02 ,  H01L39/24 ,  H01R4/68

CPC classification number: H01L39/02 ,  H01L39/2487 ,  H01R4/68 ,  Y10S505/925 ,  Y10S505/926 ,  Y10T29/49014

Abstract: A device and method for making a persistent joint allowing end terminations of superconducting MgB2 wire to be joined with a superconducting bridge. Superconducting electromagnetic coils may be joined in series or joining of coil assemblies to current sources and the two ends of a persistent switch. The device includes wire filaments with end preparation exposing reacted MgB2, inserted into a block and surrounded with Mg+B and/or MgB2 in powder, solid, slurry or sol-gel form and subsequently reacted to establish a bridge of superconducting MgB2 electrically connecting the superconducting MgB2 wires. Autonomous operation of the superconducting background magnet coils in magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) devices are allowed, or similar devices where autonomous operation of an MgB2 based superconducting magnet is required. The low resistant joint will also be beneficial for other superconducting applications such as fault current limiters, motors, generators, etc.

Abstract translation: 用于制造持续接合的装置和方法，允许超导MgB2线的端接端与超导桥接合。 超导电磁线圈可以串联或将线圈组件连接到电流源和持久开关的两端。 该装置包括具有暴露反应的MgB 2的末端制剂的丝线，插入块中并用粉末，固体，浆料或溶胶 - 凝胶形式的Mg + B和/或MgB 2包围，并随后反应以建立超导MgB2电桥， 超导MgB2导线。 允许在磁共振成像（MRI）和核磁共振（NMR）装置中的超导背景磁体线圈的自主操作，或者需要基于MgB 2的超导磁体自主操作的类似装置。 低阻抗接头也将有益于其他超导应用，如故障限流器，电机，发电机等。

公开(公告)号：US20100190649A1

公开(公告)日：2010-07-29

申请号：US12693158

申请日：2010-01-25

Applicant: David W. Doll ,  Michael J. Tomsic

Inventor： David W. Doll ,  Michael J. Tomsic

IPC: H01L39/02 ,  H01L39/24

CPC classification number: H01L39/02 ,  H01L39/2487 ,  H01R4/68 ,  Y10S505/925 ,  Y10S505/926 ,  Y10T29/49014

Abstract: A device and method for making a persistent joint allowing end terminations of superconducting MgB2 wire to be joined with a superconducting bridge. Superconducting electromagnetic coils may be joined in series or joining of coil assemblies to current sources and the two ends of a persistent switch. The device includes wire filaments with end preparation exposing reacted MgB2, inserted into a block and surrounded with Mg+B and/or MgB2 in powder, solid, slurry or sol-gel form and subsequently reacted to establish a bridge of superconducting MgB2 electrically connecting the superconducting MgB2 wires. Autonomous operation of the superconducting background magnet coils in magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) devices are allowed, or similar devices where autonomous operation of an MgB2 based superconducting magnet is required. The low resistant joint will also be beneficial for other superconducting applications such as fault current limiters, motors, generators, etc.

Abstract translation: 用于制造持续接合的装置和方法，允许超导MgB2线的端接端与超导桥接合。 超导电磁线圈可以串联或将线圈组件连接到电流源和持久开关的两端。 该装置包括具有暴露反应的MgB 2的末端制剂的丝线，插入块中并用粉末，固体，浆料或溶胶 - 凝胶形式的Mg + B和/或MgB 2包围，并随后反应以建立超导MgB2电桥， 超导MgB2导线。 允许在磁共振成像（MRI）和核磁共振（NMR）装置中的超导背景磁体线圈的自主操作，或者需要基于MgB 2的超导磁体自主操作的类似装置。 低阻抗接头也将有益于其他超导应用，如故障限流器，电机，发电机等。

公开(公告)号：US4598936A

公开(公告)日：1986-07-08

申请号：US582507

申请日：1984-02-22

Applicant: David W. Doll ,  E. Randolph Hager

Inventor： David W. Doll ,  E. Randolph Hager

IPC: F16L25/12 ,  F16L37/00 ,  F16L23/00

CPC classification number: F16L37/002 ,  F16L25/12 ,  Y10S285/92

Abstract: A remotely operable and maintainable vacuum joint closure mechanism for a noncircular aperture is disclosed. The closure mechanism includes an extendible bellows coupled at one end to a noncircular duct and at its other end to a flange assembly having sealed grooves for establishing a high vacuum seal with the abutting surface of a facing flange which includes an aperture forming part of the system to be evacuated. A plurality of generally linear arrangements of pivotally coupled linkages and piston combinations are mounted around the outer surface of the duct and aligned along the length thereof. Each of the piston/linkage assemblies is adapted to engage the flange assembly by means of a respective piston and is further coupled to a remote controlled piston drive shaft to permit each of the linkages positioned on a respective flat outer surface of the duct to simultaneously and uniformly displace a corresponding piston and the flange assembly with which it is in contact along the length of the duct in extending the bellows to provide a high vacuum seal between the movable flange and the facing flange. A plurality of latch mechanisms are also pivotally mounted on the outside of the duct. A first end of each of the latch mechanisms is coupled to a remotely controlled latch control shaft for displacing the latch mechanism about its pivot point. In response to the pivoting displacement of the latch mechanism, a second end thereof is displaced so as to securely engage the facing flange.

Abstract translation: 公开了一种用于非圆形孔的远程可操作和可维护的真空接头闭合机构。 闭合机构包括可伸缩的波纹管，其一端与非圆形管道相连，而另一端连接到凸缘组件，该凸缘组件具有用于与面对凸缘的邻接表面建立高真空密封的凸缘组件，该密封凹槽包括形成系统部分的孔 被疏散。 枢转联接的联动装置和活塞组合的多个大致直线的布置被安装在管道的外表面周围并沿其长度对准。 活塞/连杆组件中的每一个适于通过相应的活塞接合凸缘组件，并且还联接到远程控制的活塞驱动轴，以允许位于管道的相应的平坦外表面上的每个连杆同时和 在延伸波纹管时使相应的活塞和与管道长度接触的凸缘组件均匀地移位，以在可动凸缘和相对的凸缘之间提供高真空密封。 多个闩锁机构也被枢转地安装在管道的外部。 每个闩锁机构的第一端连接到远程控制的闩锁控制轴，用于使闩锁机构围绕其枢转点移动。 响应于闩锁机构的枢转位移，其第二端被移位，以便牢固地接合相对的凸缘。

公开(公告)号：US4532101A

公开(公告)日：1985-07-30

申请号：US435791

申请日：1982-10-21

Applicant: David W. Doll

Inventor： David W. Doll

IPC: H05H1/12 ,  G21B1/00

CPC classification number: G21B1/13 ,  Y02E30/122 ,  Y02E30/128

Abstract: A limiter blade for a large tokomak fusion reactor includes three articulated blade sections for enabling the limiter blade to be adjusted for plasmas of different sizes. Each blade section is formed of a rigid backing plate carrying graphite tiles coated with titanium carbide, and the limiter blade forms a generally elliptic contour in both the poloidal and toroidal directions to uniformly distribute the heat flow to the blade. The limiter blade includes a central blade section movable along the major radius of the vacuum vessel, and upper and lower pivotal blade sections which may be pivoted by linear actuators having rollers held to the back surface of the pivotal blade sections.

Abstract translation: 用于大型托卡马克聚变反应堆的限制器叶片包括三个铰接的叶片部分，用于使限位器叶片能够调整为不同尺寸的等离子体。 每个叶片部分由承载涂覆有碳化钛的石墨砖的刚性背板形成，并且限制器叶片在极向和环形方向上形成大致椭圆形的轮廓，以将热流均匀地分布到叶片。 限制器叶片包括可沿着真空容器的主半径移动的中央叶片部分，以及上部和下部枢转叶片部分，其可由具有保持在枢转叶片部分的后表面的辊的线性致动器枢转。

公开(公告)号：US4476022A

公开(公告)日：1984-10-09

申请号：US474567

申请日：1983-03-11

Applicant: David W. Doll

Inventor： David W. Doll

IPC: B01D63/10 ,  B01D31/00

CPC classification number: B01D63/103 ,  B01D65/08 ,  B01D2313/12 ,  B01D2313/146 ,  B01D2321/2008

Abstract: A module for use in separating a permeate from a fluid feed mixture. The module employs a serrated product tube with a plurality of perforations or apertures through the serrations to the inside of the tube. The serrations take the form of a helix or a grid. A product spacer with protruding ribs on one surface is folded over the product tube with the ribs on the opposite side of the serrations of the tube, and extending a predetermined length for laminating with additional spacer material and a membrane with a highly porous backing. The free ends of the membrane are sealed together to form an envelope enclosing the product spacer. First and second brine spacers having channels parallel with the axis of the tube separate the envelope portion of the product spacer and membrane so that when the membrane and spacers are spirally wound about the tube, each layer of product spacer and membrane have first and second brine spacers therebetween with the channels of the first and second brine spacers opposing.

Abstract translation: 用于从流体进料混合物中分离渗透物的模块。 该模块采用锯齿产品管，其具有通过穿过管内部的锯齿的多个穿孔或孔。 锯齿呈螺旋形或网状。 在一个表面上具有突出肋的产品间隔物在产品管上折叠，其中肋在管的锯齿的相对侧上，并且延伸预定长度以与附加的间隔物材料和具有高度多孔背衬的膜层压。 膜的自由端密封在一起以形成封闭产品间隔物的信封。 具有与管轴平行的通道的第一和第二盐水隔离物分离产品间隔物和膜的包络部分，使得当膜和间隔物围绕管螺旋形缠绕时，每层产物间隔物和膜具有第一和第二盐水 间隔物与第一和第二盐水隔离物的通道相对。