Pneumatic sealing device for waste disposal systems
US5247974A · kind A · utility
21Cited by
10References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1992 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | Jan 21, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6855
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A temporary sealing device for sealing a waste discharge conduit from an RV to an inlet receptacle of a waste receiving reservoir. The sealing device includes an inflatable bladder which is mounted so as to be positionable between the discharge conduit and the receptacle. A pump inflates the bladder to a size which seals the opening between the receptacle and the conduit to inhibit removal of the conduit and prevent the discharge of waste therearound. The sealing device is also provided with a valve which allows the bladder to be deflated after the transfer of waste and permits the conduit to be withdrawn from the receptacle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.