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. 10, 1984
Filed:
Apr. 25, 1983
Martin T Dunn, Hartsville, SC (US);
Sonoco Products Company, Hartsville, SC (US);
Abstract
In a container for accommodating hot liquid fills, an end closure capable of inward deflection in response to a decrease in internal pressure created by thermal contraction as the liquid fill cools. The closure is formed of conventional metal stock and includes, as formed, a central portion domed to define either a concave configuration or a convex configuration as viewed from the exterior of the container. The domed portion, as a step or steps prior to filling, is predeflected, either once or twice depending upon its initial configuration, to arrive at an outwardly domed configuration preparatory to inward deflection in response to the cooling of the product and for the accommodation of an internally generated vacuum.