Device for sealing an opening and slide valve comprising such a device
US4705259A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1985 |
| Grant date | Nov 10, 1987 |
| Priority date | — |
| Expiry date | Jun 26, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a device for sealing an opening (7) defined by an edge (6), comprising a sealing element (2, 102), the dimensions of which are at least equal to those of the opening (7), means for securing the said sealing element opposite the opening, and means for ensuring fluid-tightness between the sealing element (2, 102) and the edge (6). The means for ensuring tightness between the sealing element (2, 102) and the edge (6) consists of a flexible membrane (8), means for fixing the circumference of this membrane to the sealing element (2, 102) so as to define a volume (16) between the membrane (8) and the sealing element (2, 102), and a communication hole (18, 32) provided in the sealing element so as to connect the volume (16) to a source of pressurized fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.