Process and apparatus for testing containers
US6330823A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1998 |
| Grant date | Dec 18, 2001 |
| Priority date | — |
| Expiry date | Jan 13, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/366
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The fluid tightness of containers having a first deformable section and a second deformable section spaced from the first deformable section is checked by changing the pressure applied to the first deformable section, preferably without causing fluid to flow through the first deformable section out of the container, and without changing the pressure applied to the second deformable section, thereby causing a deformation of the first deformable section and a change in pressure within the container; and thereafter monitoring a predetermined characteristic, preferably the position, of the second deformable section. This process can be used to check the fluid tightness of the containers with relatively fragile seals, for example, a foil lid of a food container without mechanical contact. Automated apparatus for carrying out this process is described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.