Long wearing movie film bobbins with floating hubs
    1.
    发明授权
    Long wearing movie film bobbins with floating hubs 失效
    长时间穿着带浮动轮毂的电影卷轴

    公开(公告)号:US4151963A

    公开(公告)日:1979-05-01

    申请号:US790658

    申请日:1977-04-25

    CPC classification number: B65H75/18 G03B21/321

    Abstract: This invention provides a long wearing and wear resistant construction of a movie film bobbin having a floating hub. Because of the relative rotation of the hub and panels in this type bobbin and the desired close tolerances, there is a tendency for the parts to wear. This wear is primarily in the radial direction where the panels meet the hub. Thus, a special metallic bearing ring stamping from a flat washer provides a cylindrical surface so that the washer is interspersed between hub and panels with the cylindrical surface engaging the panels in the radial wear direction.

    Abstract translation: 本发明提供了具有浮动轮毂的电影胶卷筒的长期耐磨和耐磨结构。 由于这种类型的筒管中的轮毂和面板的相对旋转以及期望的紧公差,所以这些部件有磨损的倾向。 这种磨损主要在面板相遇轮毂的径向方向。 因此,从平垫圈冲压的特殊的金属轴承环提供圆柱形表面,使得垫圈散布在毂和面板之间,圆柱形表面在径向磨损方向上与面板接合。

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