公开(公告)号：US5434898A

公开(公告)日：1995-07-18

申请号：US212443

申请日：1994-03-14

Applicant: David J. Barkhurst

Inventor： David J. Barkhurst

IPC: G21C3/30 ,  G21C3/322 ,  G21C3/34 ,  G21C3/352 ,  G21C3/356

CPC classification number: G21C3/352 ,  G21C3/322 ,  G21C3/3563 ,  G21Y2002/201 ,  G21Y2002/30 ,  G21Y2004/30 ,  G21Y2004/302 ,  Y02E30/31 ,  Y02E30/38

Abstract: A nuclear fuel assembly for a boiling water reactor having a spacer grid for positioning and retaining the fuel rods. The spacer grid comprising an upper grid structure and a lower grid structure. Each grid structure comprises a first set of grid strips and a second set of grid strips which intersect to form in each grid structure a lattice of rectangular and square shaped cells through which the fuel rods extend and which act against the fuel rods within the cells. The lattice in each of the upper grid structure and the lower grid structure being the same. The upper grid structure and the lower grid structure being oriented relative to one another so that each of the rectangular and square shaped cells in the upper grid structure is superimposed on a corresponding one of the rectangular and square shaped cells in the lower grid structure so as to act cooperatively against and provide support to a fuel rod on four sides of the fuel rod.

Abstract translation: 一种用于沸水反应器的核燃料组件，其具有用于定位和保持燃料棒的间隔栅格。 间隔网格包括上格栅结构和下网格结构。 每个网格结构包括第一组网格条和第二组格栅条，其相交以在每个格栅结构中形成矩形和方形形状的单元的格子，燃料棒通过该格子延伸并对其内的燃料棒作用。 每个上格栅结构和下格栅结构中的格子相同。 上格栅结构和下格栅结构相对于彼此定向，使得上格栅结构中的每个矩形和正方形的单元叠加在下格栅结构中的相应的一个矩形和正方形的单元上，以便 与燃料棒四侧的燃料棒协同作用并提供支撑。

公开(公告)号：US5353317A

公开(公告)日：1994-10-04

申请号：US168108

申请日：1993-12-15

Applicant: David J. Barkhurst

Inventor： David J. Barkhurst

IPC: G21C21/00 ,  G21C3/00 ,  G21C19/06 ,  G21F5/012

CPC classification number: G21C19/06 ,  G21F5/012 ,  G21Y2002/303 ,  G21Y2002/304 ,  G21Y2004/30 ,  G21Y2004/501

Abstract: A shipping shim (30) for restraining nuclear fuel rods (11, 12, 13) in a nuclear fuel assembly (10) which accommodates varied sized gaps (g.sub.1, g.sub.2, g.sub.3, g.sub.4) between fueled and non-fuel bearing members in the fuel assembly.

Abstract translation: 一种用于限制核燃料组件（10）中的核燃料棒（11,12,13）的运输垫片（30），其容纳在燃料和非燃料承载构件中的不同尺寸的间隙（g1，g2，g3，g4） 燃油组件

公开(公告)号：US4676945A

公开(公告)日：1987-06-30

申请号：US684036

申请日：1984-12-20

Applicant: David J. Barkhurst

Inventor： David J. Barkhurst

IPC: G21C19/20

CPC classification number: G21C19/20 ,  G21C19/19 ,  Y10T403/32573

Abstract: In accordance with the present invention, use is made of the adjacent vertically arranged fuel bundles which surround the empty core position to be filled with the fuel bundle to be inserted. Such use of the adjacent bundles involves the placement upon the top tie plate of each bundle of a separate and individual centering device, each centering device being of a generally box-like cap configuration and engaging the upper tie plate of each fuel bundle. Preferably, each such centering device includes a pair of tapered dowel pins which engage apertures formed in the upper surface of the fuel assembly tie plate so that lateral forces imposed upon the centering device will be transmitted to the upper end of the fuel bundle assembly that may be bowed into the empty core position. Each centering device also preferably includes an elongated handling pole uniquely connected to the top wall of the centering device so that each centering device may be lowered individually onto the upper tie plate of its respective associated fuel bundle. This elongated handling pole engages the top wall of the centering device through a novel ball and socket arrangement which permits the handling of the pole to swing well clear of the fuel insertion operating area after the centering device has been placed on its respective fuel bundle. The unique ball and socket arrangement also allows the centering device to self-align itself on the handling pole when the handling pole is lifted vertically or, alternatively, being lowered down on top of the fuel bundle during installation thereon.

Abstract translation: 根据本发明，使用围绕空芯位置的相邻的垂直布置的燃料束，以填充待插入的燃料束。 相邻束的这种使用涉及在每个单独的和单独的定心装置的束的顶部连接板上的放置，每个定心装置具有大致盒形盖的构造并且接合每个燃料束的上部连接板。 优选地，每个这样的定心装置包括一对锥形定位销，其接合形成在燃料组件连接板的上表面中的孔，使得施加在定心装置上的侧向力将被传递到燃料束组件的上端， 鞠躬在空的核心位置。 每个定心装置还优选地包括细长的处理杆，其独特地连接到定心装置的顶壁，使得每个定心装置可以单独地降低到其各自相关联的燃料束的上连接板上。 这种细长的处理杆通过一种新型的球窝装置与定中心装置的顶壁接合，这种新颖的球窝装置在定心装置已经放置在其各自的燃料束上之后，允许杆的操纵在燃料插入操作区域内摆动得很好。 独特的球窝布置还允许定心装置在操纵杆竖直升高时或者在其上安装时在燃料束的顶部向下降下时自行对准操纵杆。

公开(公告)号：US4565365A

公开(公告)日：1986-01-21

申请号：US491849

申请日：1983-05-05

Applicant: David J. Barkhurst

Inventor： David J. Barkhurst

IPC: A63B69/16 ,  A63B21/00

CPC classification number: A63B69/16 ,  A63B2069/164 ,  A63B2069/166

Abstract: A stand for supporting a bicycle to convert it to a stationary exercising device includes a frame adapted to sit on a floor or other surface. The frame carries rollers for supporting the rear wheel of the bicycle and a fixed support for the front wheel. A single supporting strut mounted on one side only of the frame has a latch at its upper end which engages the seat stem of the bicycle. Since, as stated above, only a single strut is used, the bicycle can easily be set into position on, and removed from, the stand.

Abstract translation: 用于支撑自行车以将其转换成静止运动装置的支架包括适于坐在地板或其他表面上的框架。 框架承载用于支撑自行车的后轮的辊和用于前轮的固定支撑件。 仅在框架的一侧安装的单个支撑支柱在其上端具有接合自行车的座杆的闩锁。 由于如上所述，仅使用单个支柱，因此自行车可以容易地被设置在支架上并从支架上移除。