|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||220/5A ; 220/469 ; 220/470|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 7 인용 특허 : 7|
A plastic liner sheet is positioned between an outer bottom wall and an inner bottom wall of a dual wall tank providing uniform spacing and a degree of support. The liner sheet is molded with integral spacer elements in the form of semi-spherical bosses extending from the top and bottom surfaces of the liner sheet. Equilaterally positioned depressions surround each boss so that a boss on one side forms a depression on the opposite side and vice versa. The support function is augmented by providing a series of steel balls which are placed in selected depr...
A double wall tank construction including a first wall and a second wall parallel to and spaced from the first wall; and a tank liner formed between said walls and having distal surfaces in contact with facing surfaces of said walls, said tank liner comprising: a formed support sheet; each of said distal surfaces including a series of integral spacer elements extending in rows and ranks on said sheet and wherein the rows and ranks of said elements on one distal surface are offset from the rows and ranks of said elements on an opposed distal surface, and ...