Liquid-tight sealing device and method
US4796899A · kind A · utility
Inventors
Key dates
| Filing date | Feb 2, 1987 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | Feb 2, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L41/082
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method and device which provide a liquid-tight seal between a length of pipe, a housing, or other hollow structure and cured concrete in which the structure is embedded. A foamed polymeric sealing element is bonded about a portion of the exterior surface of the structure, and gunnite or concrete is cast about the structure and the sealing element. The interface of the concrete and the foamed polymeric sealing element become substantially permanently sealingly engaged. The method and device are particularly useful in the construction of swimming pools or similar fluid-containing vessels in which pipes or housings penetrate cast walls meant to confine water or other fluids. The method and device may also be used to form seals about structures penetrating cast foundations, dams, bulkheads, retaining walls, cisterns and basement walls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.