Inflatable hatch sealing device
US9725237B2 · kind B2 · utility
0Cited by
24References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2013 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Aug 5, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2590/046
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Embodiments of the present invention relate to apparatuses, systems, and methods for constructing, installing, and using an inflatable hatch sealing device in environmentally sealing a manhole. In particular, the inflatable hatch sealing device has a sealing assembly with a directed inflatable air bladder, and the sealing assembly is rotatable relative to a contact disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.