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    Method for making a galvanometer with axial symmetry
    11.
    发明授权
    Method for making a galvanometer with axial symmetry 失效
    制造具有轴对称性的电流计的方法

    公开(公告)号：US06612015B2

    公开(公告)日：2003-09-02

    申请号：US10029470

    申请日：2001-10-22

    Applicant: David C. Brown

    Inventor： David C. Brown

    IPC: H02K1500

    CPC classification number: G01R5/14 ,  F16C25/08 ,  G01R1/10 ,  Y10S384/905 ,  Y10T29/49009 ,  Y10T29/49075

    Abstract: A method of fabricating a limited-rotation motor that is characterized by axial stability of a rotor that includes a permanent-magnet armature and further characterized by a relatively small inherent axial force on the rotor. The rotor is supported by a pair of ball-bearing units and axial stability is provided by preloading the bearing unit at the end of the rotor with a relatively stiff spring and preloading the bearing at the second end with a relatively weak spring, whereby thermal expansion and contraction of the rotor are accommodated almost entirely by a movement of the second end of the rotor. A low axial force on the rotor is obtained by forming the armature with a split mold so that uniform compression is extended along the entire armature, resulting in relatively uniform magnetic properties, and by positioning the corresponding stator elements symmetrically relative to the magnetic center of the armature.

    Abstract translation: 一种制造限定旋转电动机的方法，其特征在于包括永磁体电枢的转子的轴向稳定性，其特征还在于转子上固有的相对较小的轴向力。 转子由一对滚珠轴承单元支撑，轴向稳定性是通过在转子的端部用相对刚性的弹簧预加载轴承单元而提供的，并且在第二端用相对较小的弹簧预加载轴承，由此热膨胀 并且转子的收缩几乎完全通过转子的第二端的移动而容纳。通过用分开的模具形成电枢而获得转子上的低轴向力，使得均匀的压缩沿整个电枢延伸，导致 相对均匀的磁特性，并且相对于电枢的磁心对称定位相应的定子元件。

    Method for a galvanometer with axial symmetry and improved bearing design
    12.
    发明申请
    Method for a galvanometer with axial symmetry and improved bearing design 失效
    具有轴对称性和改进轴承设计的电流计的方法

    公开(公告)号：US20020059715A1

    公开(公告)日：2002-05-23

    申请号：US10029470

    申请日：2001-10-22

    Inventor： David C. Brown

    IPC: H02K015/00 ,  H02K015/14

    CPC classification number: G01R5/14 ,  F16C25/08 ,  G01R1/10 ,  Y10S384/905 ,  Y10T29/49009 ,  Y10T29/49075

    Abstract: A method of fabricating a limited-rotation motor that is characterized by axial stability of a rotor that includes a permanent-magnet armature and further characterized by a relatively small inherent axial force on the rotor. The rotor is supported by a pair of ball-bearing units and axial stability is provided by preloading the bearing unit at the end of the rotor with a relatively stiff spring and preloading the bearing at the second end with a relatively weak spring, whereby thermal expansion and contraction of the rotor are accommodated almost entirely by a movement of the second end of the rotor. A low axial force on the rotor is obtained by forming the armature with a split mold so that uniform compression is extended along the entire armature, resulting in relatively uniform magnetic properties, and by positioning the corresponding stator elements symmetrically relative to the magnetic center of the armature.

    Abstract translation: 一种制造限定旋转电动机的方法，其特征在于包括永磁体电枢的转子的轴向稳定性，其特征还在于转子上固有的相对较小的轴向力。 转子由一对滚珠轴承单元支撑，轴向稳定性是通过在转子的端部用相对刚性的弹簧预加载轴承单元而提供的，并且在第二端用相对较小的弹簧预加载轴承，由此热膨胀 并且转子的收缩几乎完全由转子的第二端的运动所容纳。 转子上的低轴向力通过用分体模具形成电枢而获得，使得均匀的压缩沿着整个电枢延伸，导致相对均匀的磁性能，并且通过将相应的定子元件相对于磁体的磁心对称地定位 衔铁。

    Charles edwin
    17.
    发明授权
    Charles edwin 失效

    公开(公告)号：US1623915A

    公开(公告)日：1927-04-05

    申请号：US1623915D

    CPC classification number: G01R1/10

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