|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||215/1C ; 220/70|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 40 인용 특허 : 0|
This disclosure relates to improvements in the cross section of a bottom end of a plastic bottle suitable for packaging liquids under internal pressures. The bottom end is primarily one which includes a generally hemispherical bottom wall having projecting therefrom in circumferentially spaced relation hollow legs terminating in supporting feet. The bottom end is stiffened against creep of the plastic material over a period of time under the influence of the internal pressure by changing the configuration of the bottom wall from that of a hemisphere to o...
In a blow molded plastic container of the type comprising a tubular body terminating in a generally hemispherical outwardly convex bottom wall, said bottom wall being interrupted by a plurality of circumferentially spaced hollow legs with portions of said bottom wall disposed therebetween and terminating in a lower polar portion, said hollow legs terminating in lowermost supporting feet the improvement comprising said bottom wall in axial half cross-section between an adjacent pair of said legs being in part of a constant curvature and in part other than...