초록 ▼

A device adapted to detecting leaks in an article having readily deformable walls has conventional arrangements for performing a leak detection by overpressure or by vacuum and has a deformable backup wall for engagement with the walls of the article. The backup wall is, on its face oriented towards

A device adapted to detecting leaks in an article having readily deformable walls has conventional arrangements for performing a leak detection by overpressure or by vacuum and has a deformable backup wall for engagement with the walls of the article. The backup wall is, on its face oriented towards the article, so configured that between the backup wall and the article there is obtained a coherent fluidtight space which may be evacuated.

대표청구항 ▼

A device for detecting leaks in an article which includes a readily deformable wall having opposite inner and outer sides; the improvement comprising: a. a flexible backup wall having opposite inner and outer sides and being arranged for positioning inside an article; b. closure means secured to sai

A device for detecting leaks in an article which includes a readily deformable wall having opposite inner and outer sides; the improvement comprising: a. a flexible backup wall having opposite inner and outer sides and being arranged for positioning inside an article; b. closure means secured to said backup wall for defining, together with said outer side of said backup wall and the inner side of an article wall, a coherent space; c. means for generating a pressure difference between the pressures in said coherent space and at said inner side of said backup wall for causing said backup wall to deform and to engage, with its outer side, the inner side of the article wall for supporting the article wall while maintaining the coherence of said space; d. means for generating a pressure difference between the pressures in said coherent space and at the outer side of the article wall for causing test gas to penetrate into said coherent space through any leak in the article wall; and e. detector means communicating with said coherent space for sensing test gas therein.