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:
Jun. 06, 1978
Filed:
Aug. 26, 1974
John L Kraska, Riverside, IL (US);
National Can Corporation, Chicago, IL (US);
Abstract
An end panel for a container is specifically configured to be able to substantially reduce the metal thickness without sacrificing resistance to bulging and buckling of the panel when subjected to high internal pressures. The end panel consists of a central portion that has an outwardly directed annular bead around the periphery thereof which is connected to a countersink or inwardly directed bead along a flat first wall portion. The outer end of the countersink or inwardly directed bead has a second flat wall portion, the outer end of which is connected to a peripheral curl by a third flat wall portion and the curl is adapted for seaming the end panel to a container body. The first and third flat wall portions of the panel define small acute angles with respect to a vertical plane that extends perpendicular to the central panel portion while the second flat wall portion defines an angle of less than 4.degree. with respect to the vertical plane.