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    • 5. 发明授权
    • Lid for pump assembly
    • 泵组装盖
    • US4252249A
    • 1981-02-24
    • US118924
    • 1980-02-06
    • William H. BeckhardtRichard O. CarlsonWilliam N. RowleyGordon F. EhretDani Setjo
    • William H. BeckhardtRichard O. CarlsonWilliam N. RowleyGordon F. EhretDani Setjo
    • B65D39/08B65D17/52B65D43/26
    • B65D39/088
    • A threaded lid for closing the opening in a pump housing having a body portion and a gripping formation defined by a ridge on the body portion having a central portion and projections extending beyond the central portion. A juncture between the central portion and each of the projections varies gradually from a rounded angle at one terminus of the juncture to a gently sloping ramp at the other terminus of the juncture, so that a simple elongated tool such as a stick may be placed between the projections of the gripping formation and rotated to loosen the lid, but not to tighten it. Furthermore, the mildly curved S-shape provides surfaces which conform to the hand to enable substantial manual loosening force to be applied comfortably to the lid, whereas the surfaces of the gripping formation engaged by the hand to tighten the lid are not conducive to the application of a substantial amount of manual force.
    • 用于封闭具有主体部分的泵壳体中的开口的螺纹盖和由主体部分上的脊限定的夹持结构,其具有中心部分和延伸超出中心部分的突起。 中心部分和每个突起之间的接合部从接合部的一个端部处的圆角到接合部的另一端部处的缓慢倾斜的坡道逐渐变化,使得诸如棒的简单的细长工具可以位于 夹持结构的突出部分旋转以使盖子松动,但不能拧紧。 此外,轻度弯曲的S形提供了与手相符合的表面,以使得能够舒适地施加到盖子上的基本的手动松动力,而用手紧固盖子的抓握结构的表面不利于施加 大量的手动力量。