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    Torsion spring tester
    1.
    发明授权
    Torsion spring tester 有权
    扭力弹簧试验机

    公开(公告)号：US6094980A

    公开(公告)日：2000-08-01

    申请号：US169254

    申请日：1998-10-09

    Applicant: David A. Larson ,  William R. Dixon, Jr.

    Inventor： David A. Larson ,  William R. Dixon, Jr.

    IPC: G01N3/00 ,  G01L3/00

    CPC classification number: G01N3/00 ,  G01N2203/0021 ,  G01N2203/021 ,  G01N2203/0292

    Abstract: A torsion spring tester incorporates a microprocessor based data acquisition/control package and special tooling. The tooling makes calibration of the tester very easy. The combination of the tooling and control package permits acquisition, storage and transfer of test data that is accurate, absolute and repeatable.

    Abstract translation: 扭力弹簧测试仪采用基于微处理器的数据采集/控制软件包和专用工具。 该工具使测试仪的校准非常简单。 工具和控制包的组合允许采集，存储和传输准确，绝对和可重复的测试数据。

    Torsion spring grading by hystersis averaging
    2.
    发明授权
    Torsion spring grading by hystersis averaging 失效
    扭转弹簧由Hystersis平均分级

    公开(公告)号：US5855138A

    公开(公告)日：1999-01-05

    申请号：US977532

    申请日：1997-11-25

    Applicant: Steven Alan Curry ,  Benjamin Keith Newman

    Inventor： Steven Alan Curry ,  Benjamin Keith Newman

    IPC: G01M5/00 ,  G01N3/00 ,  G01N3/22 ,  G01L3/00

    CPC classification number: G01N3/00 ,  G01N3/22 ,  G01N2203/0288 ,  G01N2203/0292

    Abstract: Torsion springs (1) are graded by both winding and unwinding them in a test fixture (20) having a central arbor (52a) and ledges (54,58) functionally corresponding to the use of the springs. This takes hysteresis into account. Data obtained at a known location is approximated as separate straight lines for winding and unwinding. The rotation at the predetermined base or preload torque is determined from the straight lines, and the two values are averaged. To this average value a large predetermined amount (70 degrees) of rotation is added, the torque at that value of rotation is determined from the straight lines, and the two values are averaged. The spring is graded as acceptable when that average torque is within a predetermined range.

    Abstract translation: 扭转弹簧（1）通过卷绕和放卷在具有功能上对应于弹簧的中心心轴（52a）和凸缘（54,58）的测试夹具（20）中进行分级。 这考虑到迟滞。 在已知位置获得的数据近似为用于卷绕和展开的单独的直线。 从直线确定预定基准点处的旋转或预加载力矩，并且对两个值进行平均。 对于该平均值，增加大的预定量（70度）的旋转，从该直线确定该旋转值的转矩，并且将两个值平均。 当该平均扭矩在预定范围内时，弹簧被分级为可接受的。

    Device for the testing of contact springs
    3.
    发明授权
    Device for the testing of contact springs 失效
    用于测试接触弹簧的装置

    公开(公告)号：US3875795A

    公开(公告)日：1975-04-08

    申请号：US25649072

    申请日：1972-05-24

    Applicant: HONEYWELL BULL SA

    Inventor： HAEFELE ROLAND

    IPC: G01N3/00 ,  G01L5/00

    CPC classification number: G01N3/00 ,  G01N2203/0292

    Abstract: A device is provided for the simultaneous testing of a plurality of contact springs such as are employed with printed circuit boards. A fluid pressure arrangement loads each of the springs simultaneously and a pre-set minimum force indicator is combined with a plurality of spring deflection indicators to indicate to the observer those springs which have reached a certain deflection prior to achieving the minimum loading.

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