The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 1997
Filed:
Jan. 06, 1995
William C Young, Superior Township, MI (US);
Richard C Darr, Seville, OH (US);
Dale H Behm, Arcadia, CA (US);
Plastipak Packaging, Inc., Plymouth, MI (US);
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.. The legs (22) have lower flat feet (24) with an outer diameter D.sub.f, and the hub (41) has a periphery connected to the feet and ribs with a height H.sub.p such that the ratio of the diameter D.sub.f over the height H.sub.p is in the range of about 25 to 90 to maintain strength without the hub engaging the supporting surface on which the feet rest.