Pressure indicating device

US8984929B2 · kind B2 · utility

Assignee

• Praxair Technology, Inc. · US

Inventors

• Lisa A. Fanti · Hopewell Junction, US
• Lloyd Anthony Brown · East Amherst, US
• Serge M. Campeau · Orchard Park, US
• Ronald F. Spohn · Getzville, US
• Murat Gunay · Niagara Falls, CA

Key dates

• Filing date: Dec 19, 2012
• Grant date: Mar 24, 2015
• Expiry date: Dec 12, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G01M3/26
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A pressure indicating device for detecting and isolating leakage of toxic and/or pyrophoric gasses from within various packages is disclosed. The device can affix to a user port of a cylinder package. The device has a flexible disc-like structure which is fine tuned to outwardly flex in response to a build-up of pressure of the gas exerted against the disc-like structure. The flexed disc contacts a movable pin and pushes the push outwards from within the device. The outward movement of the pin pierces a paper seal extending over the device, thereby indicating a leak from within the valving of the package. The device withstands the pressure exerted against it, thereby also isolating the leak of the pressurized gas.