Double walled tank and method of making the same
US5430927A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1993 |
| Grant date | Jul 11, 1995 |
| Priority date | — |
| Expiry date | Dec 1, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49865
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method of constructing a double-walled tank includes forming the two containers, and removing the top of the containment shell and filling it with hot water so that the containment shell expands temporarily increasing the diameter of the side wall of the containment shell. The primary container is positioned in alignment over the containment shell and is lowered into contact with the hot water, and is filled with cold water of a temperature at least about 70.degree. F. less than the temperature of the hot water so that the primary container contracts temporarily decreasing the diameter of the side wall of the primary container, and allowing the primary container to sink into the containment shell while displacing the hot water from the containment shell until the primary container is resting on the bottom of the containment shell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.