초록 ▼

A flat opening box consisting of a central base tray to the sides of which cover shells are hingedly connected to open out onto a flat surface; pivot link members are connected to movable trays in the cover shells which are also hingedly connected to the cover shells so that the box can be opened to

A flat opening box consisting of a central base tray to the sides of which cover shells are hingedly connected to open out onto a flat surface; pivot link members are connected to movable trays in the cover shells which are also hingedly connected to the cover shells so that the box can be opened to a fully flat condition to prevent tilting and spillage of its contents when open.

대표청구항 ▼

A flat-opening box comprising a centrally positioned base tray having a first side wall, a second side wAll, a rear wall, a front wall and a floor panel, a plurality of movable side tray members each having a bottom panel oriented parallel to said floor panel and linkage means connecting said base t

A flat-opening box comprising a centrally positioned base tray having a first side wall, a second side wAll, a rear wall, a front wall and a floor panel, a plurality of movable side tray members each having a bottom panel oriented parallel to said floor panel and linkage means connecting said base tray and said side tray members for movement of said side tray members along a path in which said bottom panels remain parallel to said floor panel between a first or open position in which said side trays are positioned in horizontal alignment with said base tray and a second position in which said movable side tray members are vertically aligned above said base tray, wherein said movable side tray members comprise a first bank of side tray members which when positioned in said first or open position are positioned outwardly of said first side wall of said base tray and a second bank of side tray members which when positioned in said first or open position are positioned outwardly of said second side wall of said base tray and said linkage means includes a first pair of elongated swing link members comprising a front link having one end pivotally mounted on said base tray adjacent said front wall and a rear link in front to rear alignment with said front link having one end pivotally mounted on said base tray adjacent said rear wall, pivot connection means pivotally connecting said front and rear swing links to each of said side tray members of said first bank of side tray members and a second pair of elongated swing link members comprising a second front link having one end pivotally mounted to said base tray adjacent said front wall and a second rear link in front to rear alignment with said second front link having one end pivotally mounted on said base tray adjacent said rear wall and pivot connection means pivotally connecting said second front and second rear swing links to each of said side tray members of said second bank of side tray members and a first cover shell pivotally connected to said base tray adjacent said first side wall, hinge means pivotally connecting each of said movable side tray members of said first bank of side tray members to said first cover shell, a second cover shell hingedly connected to said base tray adjacent said second side wall and hinge means connecting said movable side tray members of said second bank of side tray members to said second cover shell.