The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2026
Filed:
May. 31, 2022
Inficon Gmbh, Cologne, DE;
Jörn Liebich, Cologne, DE;
INFICON GMBH, Cologne, DE;
Abstract
A leak detection device () comprising a gas detector (), a vacuum pump (), a port for a test object () and a gas conducting path connecting the port to the gas detector () and the vacuum pump (), is characterized in that the port () comprises a controllable isolation valve () for the selective opening or closing of the port (), and that a pressure measurement device () for measuring the pressure at the port () is provided and the connection line () comprises a controllable venting valve (V, V) for selectively allowing gas from the surrounding atmosphere to flow to the port () in a pulse-like manner, wherein the leak detection device () is configured to measure the pressure p(t1) at the port () at a first time t1 before the opening of the venting valve, thereafter to open and close the venting valve in a pulse-like manner and to measure the pressure p(t2) at the port () at least at a time t2>t1 after the closing of the venting valve and to determine, whether the isolation valve () is open or closed based on the measured pressures p(t1), p(t2).