초록 ▼

A container dome with arch-like structures in elevation and polygon-shaped structures in plan. The arch-like structures are provided by pairs of chordal stiffening facets disposed in an endwise adjacent array extending transversely about the periphery of the dome to enhance top loading capability. E

A container dome with arch-like structures in elevation and polygon-shaped structures in plan. The arch-like structures are provided by pairs of chordal stiffening facets disposed in an endwise adjacent array extending transversely about the periphery of the dome to enhance top loading capability. Each pair of facets has an inwardly-convex chordal stiffening rib which defines a regular transverse polygon having an uneven number of sides to prevent dome ovalization. Preferably, multiple vertically-stacked tiers of facet pairs arrays are utilized with each array being radially offset from adjacent tiers.

대표청구항 ▼

[ We claim:] [27.] An ovalization and crush resistant container having a wide mouth annular finish, a sidewall, and a dome connecting said finish to said sidewall, said dome having a narrow annular transitional wall portion located immediately below said finish and surrounding said finish, said dome

[ We claim:] [27.] An ovalization and crush resistant container having a wide mouth annular finish, a sidewall, and a dome connecting said finish to said sidewall, said dome having a narrow annular transitional wall portion located immediately below said finish and surrounding said finish, said dome having a plurality of pairs of chordal stiffening facets disposed in an endwise adjacent array extending transversely about the periphery of said dome between said finish and said sidewall, each facet pair having an inwardly-convex chordal stiffening rib forming an inflection between an upright and a transverse facet wall portion of said dome, each facet wall portion having an outwardly convex peripheral rib with an apogee located intermediate opposite ends of said chordal stiffening rib and with portions extending therefrom in opposite directions toward opposite ends of said chordal stiffening rib, said narrow annular transitional wall portion connecting said apogees of said upright facet wall portion to said finish and being radially, outwardly and downwardly inclined between adjacent portions of said outwardly convex ribs defining said upright facet walls.