|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||220/601 ; 220/040.5 ; 220/203.01|
|발명자 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 20 인용 특허 : 29|
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 forme...
[ We claim:] [1.] A combination plastic molded drum, drum insert, and closure, the plastic molded drum comprising a cylindrical wall, a top structure, and a bottom structure: the top structure, the cylindrical wall, and the bottom structure all integrally molded;the top structure comprising a top wall and a chime having a top edge extending circumferentially around, upwardly, and radially outward with respect to said top wall, the top wall comprising an integrally molded recessed portion, the top structure further comprising an upwardly extending first f...