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12. 发明授权

US4896789A Anti-leak fuel cap liner 失效
标题翻译：防漏油盖衬套
公开(公告)号：US4896789A
公开(公告)日：1990-01-30
申请号：US312891
申请日：1989-02-17
申请人： Mark E. Federspiel
发明人： Mark E. Federspiel
IPC分类号： B60K15/04 , B65D51/16
CPC分类号： B65D51/165 , B60K15/04 , B60K2015/03547 , Y10S220/33
摘要： A vented fuel cap adapted to be removably attached to a filler neck of a fuel tank of the type commonly employed with small internal combustion engines is provided. The vented fuel cap comprises generally a generally cylindrical cap that is formed with inner threads, and is adapted to be threadedly engaged with the filler neck. A liner element is provided to fit within the cap, and is seated along the underside of the top of the cap. The liner element includes an axially inwardly-directed dome-shaped diaphragm portion that includes a slit formed substantially in its center. The cap and liner element allow for bi-directional venting of the fuel tank. The inwardly-directed dome-shaped diaphragm portion of the liner element allows outside air to vent into the fuel tank at a considerably smaller pressure differential than that required to vent outwardly from the interior of the tank.
摘要翻译：提供一种适于可移除地连接到通常用于小型内燃机的燃料箱的加注口的排气式燃料盖。排气的燃料盖通常包括大致圆柱形的盖，其形成有内螺纹，并且适于与填充物颈部螺纹接合。提供衬套元件以装配在盖内，并且沿盖的顶部的下侧安置。衬垫元件包括轴向向内指向的圆顶形膜部分，其包括基本上在其中心形成的狭缝。盖和衬垫元件允许燃料箱的双向排气。衬里元件的向内的圆顶形的隔膜部分允许外部空气以比从罐的内部向外排气所需的压差小得多的压力差将其排出到燃料箱中。

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