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:
Mar. 17, 2009
Filed:
Apr. 07, 2008
Applicant:
Kevin Gillest, Arvada, CO (US);
Inventor:
Kevin Gillest, Arvada, CO (US);
Assignee:
Omnitech International, Inc., Denver, CO (US);
Primary Examiner:
Int. Cl.
CPC ...
B21D 51/28 (2006.01); B21D 22/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a device and method for forming a curl in a closable container. A process of forming a pre-curl is used, which is followed by a second separate step of forming the completed curl. The two-step process provides for higher tolerances with respect to the shape of the curl that allows the curl to be used as a sealing surface for a recloseable metal bottle. A three-step process provides for even greater tolerances and reduces longitudinal forces by completing the curl using lateral forces. Also, a die curler is disclosed that has an eccentric motion that forms a curl in a single progressive curling process.