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    • 25. 发明授权
    • Normal pressure cationic dyeable polyester and fiber
    • 常压阳离子染色聚酯和纤维
    • US08297035B2
    • 2012-10-30
    • US12811961
    • 2009-01-07
    • Tetsuya ChikatsuneKenji KawamuraKei Tachibana
    • Tetsuya ChikatsuneKenji KawamuraKei Tachibana
    • D02G3/02
    • D01F6/84C08G63/6886C08G63/6926D01D5/24D01D5/253D02G3/28D02G3/32D06P3/522D10B2331/04Y10T428/2973Y10T428/2975Y10T442/3976
    • It is a problem of the present invention to provide a normal pressure cationic dyeable polyester being cationic dyeable under normal pressure, and having high strength. The problem can be solved by a normal pressure cationic dyeable polyester, characterized by being a copolymerized polyester having a main repeating unit including ethylene terephthalate, and including, in an acid component forming the copolymerized polyester, a metal salt of sulfoisophthalic acid (A) and a compound (B) which is a phosphonium salt of sulfoisophthalic acid or the like in such a state as to simultaneously satisfy the two mathematical expressions. Preferably, the glass transition temperature of the copolymerized polyester is within the range of 70 to 85° C., and the intrinsic viscosity of the copolymerized polyester is within the range of 0.55 to 1.00 dL/g. Further, by melt spinning the copolymerized polyester, it is possible to provide a polyester fiber.
    • 本发明的问题在于提供一种常压阳离子可染色聚酯,其在常压下可阳离子染色并具有高强度。 该问题可以通过常压阳离子可染色聚酯来解决,其特征在于具有主要重复单元包括对苯二甲酸乙二醇酯的共聚聚酯,并且在形成共聚聚酯的酸性组分中包括磺基间苯二甲酸(A)的金属盐和 作为磺基间苯二甲酸等的鏻盐的化合物(B),同时满足上述两个数学式。 优选共聚聚酯的玻璃化转变温度在70〜85℃的范围内,共聚聚酯的特性粘度在0.55〜1.00dL / g的范围内。 此外,通过共聚聚酯的熔融纺丝,可以提供聚酯纤维。
    • 26. 发明授权
    • Air-core stepping motor and shaft support structure
    • 空心步进电机和轴支撑结构
    • US08253291B2
    • 2012-08-28
    • US12661903
    • 2010-03-25
    • Kenji KawamuraTsutomu Naitou
    • Kenji KawamuraTsutomu Naitou
    • H02K5/16F16C25/00
    • H02K37/14F16C19/06F16C19/54F16C33/41F16C33/581F16C33/60F16C35/042F16C2380/26H02K5/1732
    • An air-core stepping motor includes: a tubular stator including a yoke and a coil; a tubular rotor including a cylindrical magnet; and rotor support means for supporting the rotor rotatably with respect to the stator, the rotor support means including a sleeve fixed to the rotor, a holder fixed to the stator, and a ball held between the sleeve and the holder, the holder having a first holder member and a second holder member separated in a rotational-axial direction of the motor, the first holder member and the second holder member being assembled with the first holder member or the second holder member fitted to the sleeve, and being used thereafter with the first holder member or the second holder member disconnected from the sleeve.
    • 一种空心步进电动机,包括:一个包括轭和一个线圈的管状定子; 包括圆柱形磁体的管状转子; 以及用于相对于所述定子可转动地支撑所述转子的转子支撑装置,所述转子支撑装置包括固定到所述转子的套筒,固定到所述定子的保持器以及保持在所述套筒和所述保持器之间的球,所述保持器具有第一 保持器构件和沿电动机的旋转轴方向分离的第二保持器构件,第一保持器构件和第二保持器构件与第一保持器构件或第二保持器构件组装在一起,并被安装到套筒上, 第一保持器构件或第二保持器构件与套筒断开连接。