|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||220/484 ; 206/518 ; 206/519 ; 220/004.24|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 21 인용 특허 : 2|
A tub box for receiving a drain trap is formed from two substantially identical plastic housing portions each including one or more round knockouts in one or more side walls of the housing portions and one or more edge flange knockouts in an edge flange of each housing portion and side walls in line with and terminating in close proximity to the respective round knockouts. Pull tabs on the round knockouts facilitate removal of the round knockouts from the housing portions and limit the amount of nesting of the housing portions inside one another when sta...
[ What is claimed is:] [1.]1. A plastic housing portion used to make a tub box for receiving a drain trap comprising a plurality of continuous side walls forming a hollow enclosure open at one end and closed at an other end, said open end being surrounded by a radial outturned edge flange, at least one round knockout in at least one of said side walls which when removed forms a round opening in said one side wall, and at least one edge flange knockout in said edge flange and said one side wall in line with said round knockout, said edge flange knockout t...