Inflatable seals
US4305591A · kind A · utility
6Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1980 |
| Grant date | Dec 15, 1981 |
| Priority date | — |
| Expiry date | Apr 11, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J37/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inflatable seal comprises a flexible active part and a rigid part which together define a chamber to be pressurized to place the active part in its operative position and to be evacuated to place the active part in its inoperative position, the active part being made from a composite material comprising an elastic material in which a wide deformable mesh of fibers of low extensibility is incorporated such that the active part has anisotropic elasticity and mechanical strength sufficient to withstand the differential pressures extend thereon in its operative and inoperative positions without the need for external reinforcements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.