|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||220/73 ; 220/5R|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 13 인용 특허 : 0|
The invention is directed to a molded drum of thermoplastic material, in which the bungs are arranged in troughs on the drum-head and in which the troughs are open toward an adjacent L-shaped roller chime formed directly from the drum-body at some distance below the top end of the drum.
In a blow-molded drum constructed of thermoplastic material and having bungs arranged in troughs in the drum head end in the region of the mold dividing seam and a roller chime of L-shaped cross section formed directly from the drum body at a distance below the head end, said roller chimes having a horizontal leg extending radially outwardly of the drum body and a vertical leg at the end of the horizontal leg, the improvement wherein: (a) the troughs are open toward the roller chime with the bottom wall merging smoothly with the horizontal leg of the chi...