Pressure relief valve for packing containers

US4134535A · kind A · utility

Assignee

• HAG Aktiengesellschaft · DE

Inventors

• Manfred Barthels · Bremen, DE
• Peter Werkhoff · Ankum, DE
• Otto Vitzthum · Bremen, DE

Key dates

• Filing date: Feb 10, 1978
• Grant date: Jan 16, 1979
• Expiry date: Feb 10, 1998

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/4643
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A pressure relief valve for packages in which the valve element comprises a liquid impregnated porous element covering outlet openings in the package, with the liquid layer in the porous element being torn open by package contents pressures in excess of a predetermined value to permit gas outflow from the package.