公开(公告)号：US6045000A

公开(公告)日：2000-04-04

申请号：US982671

申请日：1997-12-02

申请人： Barry Lee Rauworth ,  John M. Hennen

发明人： Barry Lee Rauworth ,  John M. Hennen

IPC分类号： B65D1/12 ,  B65D1/20 ,  B65D8/02 ,  B67D7/02 ,  B65D25/00

CPC分类号： B67D7/0283 ,  B65D1/12 ,  B65D1/20 ,  B65D11/06 ,  B65D11/08 ,  B67D7/0288 ,  B67D7/0294 ,  B65D2231/005

摘要： A plastic blow molded drum has unique top and bottom structure providing protection and strength for the drum and attachments. An integrally formed top structure with a sufficiently deep recess provides protection for drum inserts and associated closures. Additionally, the bottom structure includes a sump and structural member formed by the pinched-off parisan during the blow molding process. The drum has a top wall, a cylindrical side wall, and a bottom wall defining an open interior. The top wall has an access port comprising a fitting integrally formed with the drum. The fitting having an upwardly extending neck with inside threads and a top shoulder. A drum insert is engaged with the fitting and provides an additional second threaded fitting and a second shoulder both extending upwardly above the shoulder of the integral fitting. A closure comprising a plug portion and a threaded nut portion engages the second threaded fitting, closes the port, and extends above the second shoulder. The closure has an uppermost portion, which may be a protective cover or venting valve handle. The protective recess may suitably be formed by the chime and/or further downward recessed portions of the top wall such that the first fitting, the second fitting, and the closure, including the uppermost portion of the closure are all below the top edge of the chime.

摘要翻译： 塑料吹塑滚筒具有独特的顶部和底部结构，为滚筒和附件提供保护和强度。 具有足够深的凹部的整体形成的顶部结构为滚筒插入件和相关的封闭件提供保护。 此外，底部结构包括在吹塑成型过程中由堵塞的聚苯乙烯形成的贮槽和结构件。 滚筒具有顶壁，圆柱形侧壁和限定开放内部的底壁。 顶壁具有入口端口，该入口端口包括与滚筒一体形成的接头。 该配件具有带有内螺纹和顶部肩部的向上延伸的颈部。 滚筒插入件与配件接合并且提供另外的第二螺纹配件和在整体式配件的肩部上方向上延伸的第二肩部。 包括塞子部分和螺纹螺母部分的盖子接合第二螺纹接头，闭合端口并延伸到第二台肩上方。 封闭件具有最上部分，其可以是保护盖或排气阀手柄。 保护凹部可以适当地由顶壁的钟形和/或进一步的下凹部形成，使得包括封闭件的最上部分的第一配件，第二配件和封闭件都在 钟声。