Patent · US Active

Method and device for testing the sealing tightness of tear-off lids

US7810377B2 · kind B2 · utility

2Cited by

13References

19Claims

0Family size

Assignee

SOUDRONIC AG · CH

Inventors

Peter Gysi · Bellikon, CH
Marcel Oberholzer · Kindhausen, CH

Key dates

Filing date	Oct 12, 2005
Grant date	Oct 12, 2010
Priority date	—
Expiry date	Nov 6, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG01M3/26
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a linear transport device (30) for tear-off lids (20), the latter are tested for the impermeability of the seal and the foil in a test device (9) that is integrated into the linear transport device. The lid is fixed between a pressure chamber (43) and a measuring chamber (47, 48, 49) in an airtight manner and a test pressure is applied to the lid from the underside. An air-permeable support (47) in the measuring chamber exerts pressure on the upper face of the lid and any increase in air pressure in the measuring chamber caused by a degree of permeability is detected and evaluated by a sensor (55). A burst test can be carried out in the same test device.

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