公开(公告)号：US5024907A

公开(公告)日：1991-06-18

申请号：US452430

申请日：1989-12-19

申请人： Masaaki Ohshima ,  Akira Kobayashi ,  Senji Atsumi ,  Hiromi Shimada

发明人： Masaaki Ohshima ,  Akira Kobayashi ,  Senji Atsumi ,  Hiromi Shimada

IPC分类号： C04B35/113 ,  C04B41/53 ,  C04B41/91 ,  H01M10/39

CPC分类号： C04B35/113 ,  C04B41/009 ,  C04B41/53 ,  C04B41/91 ,  H01M10/3918 ,  Y10T29/49108

摘要： A solid electrolyte tube for sodium sulfur cells, having an outer surface of a roughness defined by an arithmetical mean deviation of the profile (R.sub.a) of not exceeding 2.0 .mu.m and a maximum height of the profile (R.sub.max) of not exceeding 15 .mu.m, is produced by leveling the outer surface of the solid electrolyte tube in a state of green body, bisque fired and calcined body, or fired body, by means of a finishing apparatus such as a centerless grinding machine, external cylindrical grinding machine, lathe, or the like. The solid electrolyte tube having a smooth and even surface can be prevented from crack formation due to local concentration of Na ion, S, sodium polysulfide and thermal stress thereon, so that it can improve durability and reliability.

公开(公告)号：US4990915A

公开(公告)日：1991-02-05

申请号：US435859

申请日：1989-11-14

申请人： Harufusa Kondoh ,  Hiromi Shimada

发明人： Harufusa Kondoh ,  Hiromi Shimada

IPC分类号： H03K19/20 ,  H03M1/12 ,  H03M1/74

CPC分类号： H03M1/745

摘要： A D/A converter utilizing a redundant binary expression includes a current supplying circuit and a current decreasing circuit operating responsive to each bit in the signal expressed in the redundant binary expression. The current supply circuit and the current decreasing circuit have their outputs connected together while their current driving capacities are established in response to the functions of the powers of 2 for each bit. In this manner, this D/A converter is able to convert the data signals expressed in the binary redundant expression directly into analog signals.

摘要翻译： 利用冗余二进制表达式的D / A转换器包括响应于以冗余二进制表达式表示的信号中的每个位操作的电流提供电路和电流减小电路。 电流供应电路和电流减小电路的输出端连接在一起，同时响应于每个位的功率2，建立其当前的驱动能力。 以这种方式，该D / A转换器能够将以二进制冗余表达式表示的数据信号直接转换为模拟信号。

公开(公告)号：US4810458A

公开(公告)日：1989-03-07

申请号：US101493

申请日：1987-09-28

申请人： Shinji Oshima ,  Hiromi Shimada

发明人： Shinji Oshima ,  Hiromi Shimada

IPC分类号： B28B3/20 ,  B28B13/04 ,  B28B21/52 ,  B29C47/88

CPC分类号： B28B13/04 ,  B28B3/20

摘要： A ceramic body is continuously extruded through a die of an extruder and held on a porous support at a slightly floating state by air pressure jetted from pores of the support.

摘要翻译： 陶瓷体通过挤压机的模头连续地挤出，并通过从载体的孔喷射的空气压力在稍微悬浮状态下保持在多孔载体上。