Method for improving insulation in hollow metal volumes
US6994822B2 · kind B2 · utility
0Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 16, 2002 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Nov 12, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2201/14
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A non-planar wall of a refrigerated container is thermally insulated by covering the wall with an air tight liner, drawing a vacuum on the internal volume of the liner and then sealing the compartment to maintain the vacuum. The liner is installed by first constructing a thermoplastic liner with a portion which approximates the non-planar shape of the wall, and then pressurizing the liner and applying heat thereto so as to cause it to thereby partially liquify, and expand into any openings that would otherwise cause leakage and to thereby adhere to the metal and form a monolithic air tight structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.