Container with pressure relief and lid and method of manufacture therefor

US6789393B2 · kind B2 · utility

Assignee

• S.C. Johnson Home Storage, Inc. · US

Inventors

• Brian C. Dais · Saginaw, US
• Joseph Perushek · Baraboo, US
• Kristopher W. Gerulski · Racine, US
• Donald E. McCumber · Madison, US
• Angela Johnson · Fort Worth, US
• Lewis D. Lee · Evansville, US
• Peter Schroepfer · Madison, US

Key dates

• Filing date: Dec 6, 2002
• Grant date: Sep 14, 2004
• Expiry date: Mar 28, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F25D2500/02
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A container comprises a sealed cavity defined by first and second walls of the container and a coolant disposed within the cavity wherein the coolant is capable of assuming first and second phases. A portion of the first wall is joined to the second wall wherein the portion includes an off-center opening. The portion is rupturable to limit pressure in the sealed cavity. The container further comprises a container rim and a lid having both an outer channel and a tab. The outer channel receives the container rim. The outer channel defines a first width. The tab has a second width substantially equal to the first width. When the coolant in the cavity is in the first phase there is a first interference fit of the channel with the container rim. When the coolant is in the second phase, there is a second interference fit, different than the first interference fit, between the container rim and the outer channel of the lid. A method of manufacture of such a container and lid is also disclosed.