Ribbed base cups

The base cup of claim 4 wherein said ribs are disposed on the inner surface of said base cup.

A base cup for receivng a container having a hemispherical bottom comprising, in combination, an annular sidewall having a thickness of about 20 mils, a seating ring extending generally inwardly from said sidewall, a generally frusto-conical support member extending upwardly and inwardly from said seating ring and a support platform having a container receiving surface disposed within said seating ring, said seating ring, said support member, and said support platform having a thickness of about 25 mils, at least one circumferential rib disposed on said annular sidewall, at least one lower rib disposed on said seating ring and a plurality of generally vertically oriented ribs extending between and intersecting said circumferential rib and said lower rib, said ribs each having a thickness of about 40 to 45 mils, a second lower rib disposed generally on said seating ring and spaced inwardly from said lower rib, a third lower rib disposed generally at the intersection of said support member and said support platform, a plurality of generally conically oriented ribs on said support member extending between said second lower rib and said third lower rib, a circumferential step in said support platform and a plurality of radially oriented, intersecting ribs disposed on said support platform within said circumferential step.

A base cup for receiving a container having a hemispherical bottom comprising, in combination, an annular sidewall having a thickness of about 20 mils, a seating ring extending generally inwardly from said sidewall, a generally frusto-conical support member extending upwardly and inwardly from said seating ring and a support platform having a container receiving surface disposed within said seating ring, said seating ring, said support member, and said support platform having a thickness of about 25 mils, at least one circumferential rib disposed on said annular sidewall, at least one lower rib disposed on said seating ring and a plurality of generally vertically oriented ribs extending between and intersecting said circumferential rib and said lower rib, said ribs each having a thickness of about 40 to 45 mils, a second lower rib disposed generally on said seating ring and spaced inwardly from said lower rib, said ribs being disposed on the inside of said base cup.

A plastic base cup for receiving a container having a hemispherical bottom comprising, in combination, an annular sidewall, a seating ring extending generally inwardly from said sidewall, a generally frusto-conical support member extending upwardly and inwardly from said seating ring and a support platform having a container receiving surface, at least one circumferential rib disposed on said annular sidewall, an annular thickened portion at substantially the intersection of the support member and the support platform, and a plurality of substantially conically extending ribs disposed on said support member and intersecting said thickened portion.

A base cup for receiving a container having a hemispherical bottom comprising, in combination, an annular sidewall, a seating ring extending generally inwardly from said sidewall, a generally frusto-conical support member extending upwardly and inwardly from said seating ring and a support platform having a container receiving surface, at least one circumferential rib disposed on said annular sidewall, a pair of substantially concentric ribs, one of said ribs disposed at substantially the intersection of said seating ring and said support member and the other of said ribs disposed at substantially the intersection of said support member and said support platform and a plurality of substantially conically extending ribs disposed between and intersecting said pair of concentric ribs.