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:
Jul. 07, 2009
Filed:
Aug. 24, 2006
Jeff Brant, Crawfordsville, IN (US);
Jeff Brant, Crawfordsville, IN (US);
Alcoa Closure Systems International, Inc., Crawfordsville, IN (US);
Abstract
A lightened, molded plastic closure exhibiting enhanced strength includes a top wall portion, and an internally threaded, depending annular skirt portion. The interior surface of the skirt portion, below the closure thread, defines an array of alternating grooves and lands, which together define a plurality of circumferentially spaced, vertically extending strengthening ribs on the inside surface of the skirt portion. The skirt portion thus exhibits desirably enhanced column strength, thereby facilitating efficient formation by 'stripping' from an associated core pin during molding. In the preferred form, the exterior surface of the skirt portion is provided with a plurality of circumferentially spaced gripping knurls respectively aligned with the grooves defined at the interior surface of the skirt portion.