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1. 发明授权

US4171061A Contamination-preventing closure 失效
标题翻译：防污封闭
公开(公告)号：US4171061A
公开(公告)日：1979-10-16
申请号：US883777
申请日：1978-03-06
申请人： Harold R. Burroughs , Willie E. Martin , Vernon J. Jordan
发明人： Harold R. Burroughs , Willie E. Martin , Vernon J. Jordan
IPC分类号： B65D51/18
CPC分类号： B65D51/18 , B65D2251/0015 , B65D2251/0062 , B65D2251/0075
摘要： A closure including a rigid thermoplastic member with a horizontally extending first portion occupying a major portion of the cross-sectional area within the loading aperture which is surrounded by the loading member of the hopper car, a second portion extending upwardly from the first portion which is inwardly adjacent of the interior of the loading member and a third portion extending outwardly from the second portion and overlaying the top of the loading member and underlaying the hatch cover of the hopper car when the hatch cover is in its closed position. Also a flexible plastic member overlaying the rigid thermoplastic member and the loading member and underlaying the hatch cover when the hatch cover is in its closed position.
摘要翻译：包括刚性热塑性构件的封闭件，其具有水平延伸的第一部分，占据加载孔内的横截面积的主要部分，该加载孔由料斗车厢的装载构件包围，第二部分从第一部分向上延伸，向内靠近装载构件的内部;以及第三部分，其从第二部分向外延伸并覆盖装载构件的顶部，并且当舱口盖处于其关闭位置时，垫底料斗车厢的舱口盖。而且，当舱口盖处于其关闭位置时，覆盖刚性热塑性构件和装载构件的柔性塑料构件和垫板盖板。

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