|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||4/661 ; 4/206 ; 220/33 ; 220/34|
|발명자 / 주소|
|인용정보||피인용 횟수 : 26 인용 특허 : 0|
An improved tub box structure can be manufactured so as to utilize a container shaped so as to include a bottom wall and a top peripheral wall extending upwardly from the bottom wall, this peripheral wall sloping between its top and its bottom so as to diverge upwardly from the bottom wall. Knock out openings are provided in the bottom wall and in the peripheral wall for use in passing a pipe into the tub box structure. A lid capable of closing off the interior of the container is fitted into the top of the container so that it may be easily removed.
A tub box structure which includes: a container having a bottom wall and a top peripheral wall extending upwardly from said bottom wall, lid means for closing the top of said container, said peripheral wall including front, back and end walls and corner walls each of which is located at an angle to said front, back and end walls and connecting said front, back and end walls, said bottom wall and said peripheral wall including a plurality of knockout openings formed therein which are adapted to be used so as to allow a pipe to enter the interior of said c...