Container base including hemispherical actuating diaphragm

US10968006B2 · kind B2 · utility

Assignee

• AMCOR RIGID PACKAGING USA, LLC · US

Inventors

• Mark Woloszyk · Chelsea, US
• Omkar Dole · Ann Arbor, US
• David Downing · Manchester, US
• Kirk Edward Maki · Tecumseh, US
• Bradley S. Philip · Tecumseh, US
• James Stelzer · South Lyon, US
• Luke A. Mast
• Richard J. Steih · Jackson, US

Key dates

• Filing date: Nov 19, 2019
• Grant date: Apr 6, 2021
• Expiry date: Nov 19, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B67C2003/226
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A container including a finish defining an opening at a first end of the container that provides access to an internal volume defined by the container. A base portion of the container includes a diaphragm that is concave relative to an exterior of the container. The diaphragm extends from a standing surface of the container to a center push-up portion of the base portion. The standing surface is at a second end of the container opposite to the first end. The diaphragm is configured to move from an as-blown first configuration to a second configuration in which the diaphragm is closer to the first end as compared to the first configuration in order to reduce residual vacuum within the container. The diaphragm is generally hemispherical in cross-section when in the second configuration.