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    • 7. 发明申请
    • WELD-LINE ELIMINATION ON MOLDED PLASTIC PARTS
    • 模制塑料件焊接线消除
    • US20120204982A1
    • 2012-08-16
    • US13027993
    • 2011-02-15
    • David M. Lyle
    • David M. Lyle
    • F04D29/42B29C45/14
    • B29C45/0046B29C45/0025B29C45/2628F04D29/026F04D29/426F05D2230/20F05D2300/43Y10T137/85978
    • An injection molded pump housing defines an interior chamber operable to contain pressurized fluid and to permit selective drainage of fluid from the chamber. The pump housing includes a unitary housing body presenting an outer margin, with the body including a drain-port boss. The boss defines a hole that extends axially therethrough and communicates with the chamber to thereby permit fluid drainage, with at least part of the boss being disposed along the outer margin of the body. The body includes a protrusion that extends outwardly from the boss to define a portion of the outer margin of the body and thereby prevent a weld-line from being formed on the boss, such that the boss is devoid of a weld-line. A method of injection molding an element so as to eliminate weld-lines in a hole-defining portion of the outer margin of the element is also disclosed.
    • 注射成型的泵壳体限定内部腔室,其可操作地容纳加压流体并且允许来自腔室的流体的选择性排出。 泵壳体包括具有外缘的整体壳体,主体包括排水口凸台。 凸台限定一个轴向延伸穿过的孔,与孔连通,从而允许流体排出,其中凸台的至少一部分沿主体的外边缘设置。 主体包括从凸台向外延伸以限定主体的外缘的一部分的突起,从而防止焊接线形成在凸台上,使得凸台没有焊缝。 还公开了一种注射成型元件以消除元件的外边缘的孔限定部分中的焊缝的方法。