Heat insulated door
US4183393A · kind A · utility
41Cited by
11References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1978 |
| Grant date | Jan 15, 1980 |
| Priority date | — |
| Expiry date | Mar 27, 1998 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2003/7023
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Closure panel having high heat insulative capacity. There has been designed for a building opening a closure having a higher heat insulative capacity than has previously been available. There are provided inner and outer panels of high structural strength, such as steel, with means providing for the physical connection with thermal separation thereof. The space between said panels is filled with a foam material, foamed in place, which further provides for the mechanical connection but thermal separation of said inner and outer panels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.