Method for making steel/concrete tanks
US4931235A · kind A · utility
15Cited by
22References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1989 |
| Grant date | Jun 5, 1990 |
| Priority date | — |
| Expiry date | Mar 6, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49877
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for making a steel/concrete tank is provided. A steel interior tank is pressurized during or after pouring of a concrete outer tank around a steel inner tank. Pressurization is commenced before the concrete has set, and is maintained until substantial setting of the concrete. The resulting structure is less susceptible than previous structures to cracking of the exterior concrete upon pressure-testing of the structure for leaks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.