公开(公告)号：US4268540A

公开(公告)日：1981-05-19

申请号：US121196

申请日：1980-02-13

Applicant: Lawrence M. Scott ,  Irving W. Wolf ,  Yu C. Lee

Inventor： Lawrence M. Scott ,  Irving W. Wolf ,  Yu C. Lee

IPC: G11B5/706 ,  B05D5/12

CPC classification number: G11B5/70657

Abstract: Improved particles for magnetic recording are provided by coating gamma ferric oxide with a mixture of barium, strontium, lead or calcium and a trivalent iron oxide. The particles have enhanced coercivity and the coercivity is relatively unaffected by elevated temperatures.

Abstract translation: 通过用钡，锶，铅或钙和三价氧化铁的混合物涂覆γ氧化铁来提供用于磁记录的改进的颗粒。 颗粒具有增强的矫顽力，并且矫顽力相对不受升高的温度的影响。

公开(公告)号：US20100226472A1

公开(公告)日：2010-09-09

申请号：US12710395

申请日：2010-02-23

Applicant: Howard A. Pendley, II ,  Max B. O'Cain ,  Yu C. Lee

Inventor： Howard A. Pendley, II ,  Max B. O'Cain ,  Yu C. Lee

IPC: G21C3/06

CPC classification number: G21C3/06 ,  G21C3/16 ,  Y02E30/40

Abstract: A nuclear fuel element having a thick walled lower section that transitions to a thinner walled upper section with the transition forming an annular interior ledge that supports the fuel pellets spaced above a bottom end plug. The space between the fuel pellets and the bottom end plug forms a gas collection plenum that assures the necessary void volume exists to maintain margin to rod internal pressure limits.

Abstract translation: 具有厚壁下部的核燃料元件转变到较薄壁的上部，其中过渡形成环形内部凸缘，其支撑在底端塞上方间隔开的燃料颗粒。 燃料颗粒和底端塞之间的空间形成一个气体收集气室，其确保存在必要的空隙体积以保持与内部压力极限的裕度。

公开(公告)号：US4814137A

公开(公告)日：1989-03-21

申请号：US156110

申请日：1988-02-16

Applicant: Peter H. Beuchel ,  Yu C. Lee

Inventor： Peter H. Beuchel ,  Yu C. Lee

IPC: G21C3/28 ,  G21C3/30

CPC classification number: G21C3/28 ,  G21Y2002/104 ,  G21Y2002/206 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/40 ,  Y10S376/903

Abstract: A fuel pellet for a nuclear reactor fuel rod is fabricated with smooth and gently sloping surfaces having no sharp edges or areas of high stress concentration. The bearing surfaces of the fuel pellets are contoured so that the pellets are easily stacked within a fuel rod and permit pivoting action between the fuel pellets. The fuel pellets are stacked end to end in a fuel rod which is incorporated into a fuel assembly for a nuclear reactor.

公开(公告)号：US4316738A

公开(公告)日：1982-02-23

申请号：US152899

申请日：1980-05-23

Applicant: Irving W. Wolf ,  Michael K. Stafford ,  Hillard M. Kahan ,  William F. Acebo ,  Lawrence M. Scott ,  Yu C. Lee

Inventor： Irving W. Wolf ,  Michael K. Stafford ,  Hillard M. Kahan ,  William F. Acebo ,  Lawrence M. Scott ,  Yu C. Lee

IPC: G11B5/62 ,  B22F9/22 ,  C09D5/23 ,  C09D7/12 ,  C21B13/00 ,  C21B15/00 ,  H01F1/06 ,  B22F9/00

CPC classification number: B22F9/22 ,  C21B13/008 ,  C21B15/00 ,  H01F1/065 ,  Y02P10/136

Abstract: Highly orientable acicular iron particles are made by reducing an acicular ferric oxide which has been formed into a porous matrix by combining it with sodium tripolyphosphate and reducing the oxide with hydrogen in the presence of a dehydrating agent.

Abstract translation: 通过将已经形成多孔基质的针状三氧化二铁与三聚磷酸钠组合并在脱水剂存在下用氢还原氧化物来制备高度定向的针状铁粒子。

公开(公告)号：US4986959A

公开(公告)日：1991-01-22

申请号：US353303

申请日：1989-05-17

Applicant: James A. Sparrow ,  Yu C. Lee

Inventor： James A. Sparrow ,  Yu C. Lee

IPC: G21C3/12 ,  G21C3/33

CPC classification number: G21C3/3315 ,  G21C3/12 ,  G21C3/331 ,  G21C3/33 ,  G21Y2002/201 ,  G21Y2002/301 ,  G21Y2004/30 ,  G21Y2004/305 ,  Y02E30/40

Abstract: An expandable top nozzle subassembly for a nuclear fuel assembly includes an upper structure having a top plate and a depending peripheral sidewall enclosure, a lower adapter plate disposed below the top plate and within the enclosure with the adapter plate and sidewall enclosure being slidably movable relative to one another so as to move the top plate toward and away from adapter plate, and a plurality of resiliently-yieldable biasing devices extending between and engaging the top plate and lower adapter plate. Interengagable structure on a lower edge of the enclosure and on a peripheral edge of the adapter plate capture and retain the adapter plate within the enclosure upon movement of the enclosure relative to the adapter plate which moves the top plate away from the adapter plate. The biasing devices in the form of coil springs are movable between compressed and expanded states in response respectively to application and removal of a hold-down force on the upper structure in the direction of the adapter plate for permitting and causing movement of the enclosure relative to the adapter plate so as to move the top plate toward and away from the adapter plate and thereby the top nozzle subassembly between compressed and expanded conditions.

公开(公告)号：US4318734A

公开(公告)日：1982-03-09

申请号：US124197

申请日：1980-02-25

Applicant: Lawrence M. Scott ,  Irving Wolf ,  Yu C. Lee

Inventor： Lawrence M. Scott ,  Irving Wolf ,  Yu C. Lee

IPC: B22F9/22 ,  H01F1/06 ,  B22F9/00

CPC classification number: B22F9/22 ,  H01F1/065

Abstract: Highly orientable acicular iron particles are made by reducing an acicular ferric oxide in powder form by contacting the granular acicular ferric oxide with hydrogen in the presence of a dehydrating agent selected from calcium hydride, calcium, calcium carbide, and mixtures thereof.

Abstract translation: 通过在选自氢化钙，钙，碳化钙及其混合物的脱水剂的存在下使颗粒状针状氧化铁与氢气接触，通过还原针状氧化铁粉末形成高定向针状铁粒子。

公开(公告)号：US06526116B1

公开(公告)日：2003-02-25

申请号：US08887017

申请日：1997-07-02

Applicant: Quang M. Nguyen ,  Yu C. Lee ,  Edmund E. DeMario ,  Jeffrey J. Fodi ,  Darin L. Redinger ,  Levie D. Smith, III

Inventor： Quang M. Nguyen ,  Yu C. Lee ,  Edmund E. DeMario ,  Jeffrey J. Fodi ,  Darin L. Redinger ,  Levie D. Smith, III

IPC: G21C3322

CPC classification number: G21C3/352 ,  G21C3/322 ,  G21Y2002/302 ,  G21Y2002/303 ,  Y02E30/38

Abstract: A support grid for laterally maintaining the relative position of elongated fuel elements within a fuel assembly for use within a core of a nuclear reactor. The grid is formed in the shape of a lattice with the intersecting lattice members defining a plurality of cells, most of which respectively support the nuclear fuel elements. The remaining cells support nuclear control rod guide tubes and instrumentation thimbles. The cells supporting the nuclear fuel elements are provided with diagonally positioned springs on two, adjacent walls. The springs support the fuel elements against dimples which protrude from the opposite cell walls. The adjacent, diagonal springs in each fuel element cell are inclined in opposite directions. The walls of the cells supporting the control rod guide tubes are embossed along their height at the locations intermediate the intersection between adjoining walls with a concave notch having a curvature which conforms to the outside surface curvature of the control rod guide tubes. The grid is provided with mixing vanes which are positioned in a symmetrical, regional pattern, with the pattern varying between adjacent regions, and configured such that the hydraulic forces across the center of the grid are balanced. The grid is reinforced with welds at the mid point of the intersection of the lattice straps.

Abstract translation: 用于横向维持细长燃料元件在燃料组件内的相对位置以用于核反应堆的核心内的支撑网格。 栅格形成为具有限定多个单元的相交晶格构件的格子形状，其中大部分单元分别支撑核燃料元件。 剩余的电池支持核控制杆导管和仪表套管。 支撑核燃料元件的电池在两个相邻的壁上设置有对角定位的弹簧。 弹簧将燃料元件抵靠从相对的细胞壁突出的凹坑。 每个燃料元件单元中相邻的对角弹簧在相反方向上倾斜。 支撑控制棒引导管的单元的壁在其相邻壁之间的相交处之间的位置处沿着它们的高度被压印，凹槽具有符合控制棒导管的外表面曲率的曲率。 格栅设置有以对称的局部图案定位的混合叶片，其中图案在相邻区域之间变化，并且构造成使得横跨网格中心的液压力平衡。 格栅在格子带交叉点的中点用焊缝加固。

公开(公告)号：US5444748A

公开(公告)日：1995-08-22

申请号：US222065

申请日：1994-04-04

Applicant: Peter H. Beuchel ,  Yu C. Lee ,  James A. Sparrow

Inventor： Peter H. Beuchel ,  Yu C. Lee ,  James A. Sparrow

IPC: G21C3/34 ,  G21C3/356

CPC classification number: G21C3/3563 ,  G21Y2002/104 ,  G21Y2002/50 ,  G21Y2004/30 ,  Y02E30/40

Abstract: Disclosed is a grid structure for supporting fuel rods in a nuclear reactor. The grid structure is formed of a plurality of interconnected thin metal grid straps that are welded or brazed together to provide a structural network of interconnected open grid cells, similar to an "egg crate divider". The grid straps are provided at regular intervals, corresponding to the width of a grid cell, with pairs of spaced, substantially horizontal, slotted spring-like projections and a substantially X-shaped spring-like projection vertically intermediate the horizontal projections. The spring-like projections are designed to support and hold the fuel rods within the grid cells under both balanced and unbalanced forces acting on the fuel rod assembly while it is in service, surrounded by coolant in the nuclear reactor.

Abstract translation: 公开了一种用于在核反应堆中支撑燃料棒的格栅结构。 栅格结构由多个互连的薄金属网格带形成，其被焊接或钎焊在一起，以提供类似于“蛋箱隔板”的互连的开放网格单元的结构网络。 栅格带以规则的间隔设置，对应于网格单元的宽度，具有成对的间隔开的，基本上水平的开槽的弹簧状突起和垂直于水平突起的垂直的X形弹簧状突起。 弹簧状突起被设计成在燃料棒组件使用期间在平衡和不平衡的作用在燃料棒组件上的力的作用下，将燃料棒支撑并保持在电网内，并在核反应堆中被冷却剂包围。