Patent · US Active

Leak-tightness test with carrier gas in foil chamber

US11199468B2 · kind B2 · utility

1Cited by

10References

6Claims

0Family size

Assignee

INFICON AG · LI

Inventors

Daniel Wetzig · Cologne, DE
Silvio Decker · Cologne, DE

Key dates

Filing date	Nov 25, 2015
Grant date	Dec 14, 2021
Priority date	—
Expiry date	May 19, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG01M3/3218
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for performing a leak-tightness test on a test object (16) in a foil chamber (10) which has at least one flexible wall region (12, 14), having the steps: using a gas or gas constituent contained in the test object as test gas for the leak-tightness test, introducing the test object into the foil chamber, evacuating the foil chamber to a pressure lower than the test gas pressure within the test object and than atmospheric pressure, introducing a carrier gas into the foil chamber into the region outside the test object, and measuring the test gas concentration of the gas mixture that forms in the foil chamber in the region outside the test object.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.