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:
Dec. 09, 2003
Filed:
Jun. 21, 2001
William C. Young, Superior Township, MI (US);
Richard C. Darr, Seville, OH (US);
Dale H. Behm, Palm Springs, CA (US);
Plastipak Packaging, Inc., Plymouth, MI (US);
Abstract
A plastic blow molded container ( ) is disclosed as including a freestanding base structure ( ) that is constructed with a plurality of alternating hollow legs ( ) and curved ribs ( ), and a hub ( ) 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 ( ) has an outer upper end ( ) with a circumferential width W and an inner lower end ( ) with a circumferential width W that is greater than the circumferential width W of the upper rib end so the lower rib end is capable of resisting stress cracking. An intermediate rib portion ( ) of a curved shape tapers between the ends with an included angle B in the range of about 1° to 8° and preferably about 2°. The specific construction disclosed of the legs ( ), ribs ( ) and hub ( and ″) enhance the capability of the base structure in providing good stability as well as the capability of withstanding internal pressure and stress cracking.