Artificial and natural structures
US4060953A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1973 |
| Grant date | Dec 6, 1977 |
| Priority date | — |
| Expiry date | Oct 30, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49746
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Voids in an artificial or natural structure are filled with a hardenable material in a liquid or semi-liquid state by surrounding the structure or a part of the structure containing the voids by a closely fitting, fluid-impermeable covering and sealing boundary edges of the covering to the structure to form a substantially fluid-tight enclosure. Air is evacuated from the voids within the fluid-tight enclosure and hardenable material in a liquid or semi-liquid state is allowed to enter into the evacuated voids until the hardenable material appears at the openings of the voids in the surface or surfaces of the structure. The hardenable material is then permitted or caused to set. The covering may be formed wholly or in part by at least one closely fitting, flexible, fluid-impermeable shroud, which is preferably transparent. At least part of the covering may comprise at least one closely fitting, fluid-impermeable coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.