Test leak unit

US6595040B1 · kind B1 · utility

Assignee

• INFICON AG · LI

Inventors

• Rudi Widt · Recklinghausen, DE
• Rudolf Flosbach · Wipperfürth, DE

Key dates

• Filing date: Jun 29, 2001
• Grant date: Jul 22, 2003
• Expiry date: Jun 29, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G01M3/205
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A test leak unit (1) includes a supply of test gas, preferably helium, and an element (14) for determining leakage rates. The aim of the invention is to create a simple, robust and easily refilled test leak unit, especially for detecting packaging leaks. To this end, the test gas supply is stored under substantially atmospheric pressure in a resealable reservoir (2) including a closing part (3), such that when the reservoir (2) is closed, a test gas-impermeable seal is developed between the closing part (3) and the reservoir (2), and the leakage rate-determining element (14) forms part of the closing part (3).