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    Geneva gear apparatus for driving an index table
    61.
    发明授权
    Geneva gear apparatus for driving an index table 失效
    用于驾驶索引表的日内瓦齿轮装置

    公开(公告)号：US4428256A

    公开(公告)日：1984-01-31

    申请号：US279218

    申请日：1981-06-30

    Applicant: Jinsei Ida ,  Yoshio Hagimoto ,  Tsutomu Fujita

    Inventor： Jinsei Ida ,  Yoshio Hagimoto ,  Tsutomu Fujita

    IPC: F16H27/06 ,  B23Q3/157 ,  B23Q16/06

    CPC classification number: B23Q16/065 ,  B23Q3/157 ,  B23Q2003/1558 ,  Y10T29/5107 ,  Y10T74/1441

    Abstract: An apparatus for driving an index table which includes a first shaft, an index table rotatably mounted on the first shaft having grooves therein forming a Geneva gear and a mechanism for driving the table in rotation including a drive motor, a second shaft driven by the motor, a crank mounted on the second shaft, and a Geneva pin mounted on the crank. The grooves have force bearing walls which include straight portions and sector portions. The Geneva pin is engaged in the grooves in the table to effect stepwise rotation of the table to equispaced, predetermined angular positions. The second shaft and the grooves are spaced from each other such that the distance from the axis of the second shaft to the circumferential surface of the pin is less than the distance from the axis of the shaft to the straight portions of the force bearing walls of the grooves. The sector portions of the force bearing walls of the grooves are recessed such that the distance from the axis of the second shaft to the circumferential surface of the pin is equal to the distance from the axis of the second shaft to the sector portions of the force bearing walls of the grooves. Thus the circumferential surface of the pin transfers from bearing against the walls of the straight portion to bearing against the walls of the recessed sector portion prior to the index table finishing rotation to one of the predetermined angular positions. The index table thereafter completes rotation to the predetermined angular position powered solely by its inertia.

    Abstract translation: 一种用于驱动分度台的装置，包括第一轴，可旋转地安装在第一轴上的分度表，其中具有凹槽的索引台形成了日内瓦齿轮;以及用于驱动旋转台的机构，包括驱动马达，由马达驱动的第二轴 ，安装在第二轴上的曲柄和安装在曲柄上的日内瓦销。 凹槽具有包含直线部分和扇形部分的力轴承壁。 日内瓦销接合在桌子中的凹槽中，以使桌子逐步旋转到等间隔的预定角度位置。 第二轴和槽彼此间隔开，使得从第二轴的轴线到销的圆周表面的距离小于从轴的轴线到力的支承壁的直线部分的距离 凹槽。 槽的受力壁的扇形部分凹陷，使得从第二轴的轴线到销的圆周表面的距离等于从第二轴的轴线到力的扇形部分的距离 沟槽的轴承壁。 因此，在分度台完成旋转到预定角度位置之一之前，销的圆周表面从轴承转移抵靠直线部分的壁，以抵靠凹陷扇形部分的壁。 然后，索引表完成旋转到仅由其惯性驱动的预定角度位置。

    Optical window protective shutter mechanism
    62.
    发明授权
    Optical window protective shutter mechanism 失效
    光学窗口保护快门机构

    公开(公告)号：US4004465A

    公开(公告)日：1977-01-25

    申请号：US650590

    申请日：1976-01-20

    Applicant: Richard A. Dinges ,  Morris Weber

    Inventor： Richard A. Dinges ,  Morris Weber

    IPC: F16H27/06 ,  F41H5/26 ,  F42C19/04 ,  F16H27/04 ,  F16H55/04

    CPC classification number: F42B10/46 ,  F16H27/06 ,  F41H5/26 ,  F42C19/04 ,  Y10T74/18528 ,  Y10T74/19879

    Abstract: A visor-like, protective hood assembly consisting of a segmented shutter for covering an optical window and including three hemispherical shutter segments of increasing radii and pivoted about a common pivot for relocation between a retracted, open and nested relation and an extended, closed position. A drive motor, coupled with a Geneva mechanism, directly and intermittently drives the outermost shutter segment, and trailing edge lips on each segment engage with and respectively drive the intermediate and inner segments to their fully extended, closed positions in a protective relation over the window.

    Abstract translation: 一种护目镜般的保护罩组合件，由一个用于覆盖光学窗口的分段式遮光罩组成，包括三个半球状的快门部分，其半径越来越大并围绕公共枢轴枢转，以便在缩回的，开放的和嵌套的关系和延伸的关闭位置之间进行重新定位。 与日内瓦机构结合的驱动电机直接并间歇地驱动最外面的闸板段，并且每个段上的后缘唇缘以中间和内部段之间的保护关系与中间段和内部区段相互驱动到完全延伸的关闭位置 。

    Geneva motion indexer with hemispherical head
    63.
    发明授权
    Geneva motion indexer with hemispherical head 失效
    日内瓦运动指标与HEMISPHERICAL HEAD

    公开(公告)号：US3583258A

    公开(公告)日：1971-06-08

    申请号：US3583258D

    申请日：1969-09-08

    Applicant: ANCHOR HOCKING CORP

    Inventor： FOUSE FREDERICK Z

    IPC: F16H27/06 ,  B23Q17/00

    CPC classification number: F16H27/06 ,  Y10T74/1441

    Abstract: An indexer for establishing Geneva-type motion, in which the rotation of the head changes according to a sinusoidal curve and whereby instantaneous or abrupt changes in velocity are avoided. The mechanism includes a head having a hemispherical surface and rotatable about a first axis. The head is rotated in indexed motion by a cam driven by a drive shaft rotating about a second axis perpendicular to the first axis and intersecting the latter at the center of the hemisphere. Automatically locking means prevent rotation of the head between successive indexing advancements. Optional means for generating a timed reciprocating motion along the first axis are also provided.

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