Oil-less and wetted pressure relief valves having an integrated filter

US8636034B2 · kind B2 · utility

Assignee

• Plitek, L.L.C. · US

Inventors

• Karl K. Hoffman · Arlington Heights, US
• Keith P. Hoffman · Boonville, US
• Robert C. Larsen · Bartlett, US
• John Ozcomert · Bartlett, US
• Douglas A. Wielunski · Waterford, US

Key dates

• Filing date: Oct 9, 2012
• Grant date: Jan 28, 2014
• Expiry date: Oct 9, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/8122
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A one-way pressure relief valve having an integrated filter. One-way pressure relief valves may be applied to a product package to evacuate gas from the package. The integrated filter prevents materials within the package from interfering with closure or operation of the pressure relief valve. Certain pressure relief valve embodiments can be configured for optimal valve operation without need for a wetting agent while other pressure relief valve embodiments operate optimally with a wetting agent.