Bottles and jars – End wall structure – One-piece side and end wall
Patent
1995-04-27
1997-04-01
Weaver, Sue A.
Bottles and jars
End wall structure
One-piece side and end wall
220606, 220608, 220609, B05D 102, B05D 142, B05D 2300
Patent
active
056157908
ABSTRACT:
A plastic blow molded container (10) is disclosed as including a freestanding base structure (20) that is constructed with a plurality of alternating hollow legs 22 and curved ribs (34), and a hub (41) from which the legs and ribs extend radially with a construction that provides good stability against tipping as well as the capability of withstanding internal pressure. Each rib (34) has an outer upper end (36) with a circumferential width W.sub.u and an inner lower end (38) with a circumferential width W.sub.l that is greater than the circumferential width W.sub.u of the upper rib end so the lower rib end is capable of resisting stress cracking. An intermediate rib portion (40) of a curved shape tapers between the ends with an included angle B in the range of about 1.degree. to 8.degree. and preferably about 2.degree..
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Darr Richard C.
Young William C.
Plastipak Packaging, Inc.
Weaver Sue A.
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