Vacuum heat insulator
US4486482A · kind A · utility
58Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1983 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Jun 15, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2495
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vacuum heat insulator comprises compressed glass fibers, a planar thin metal plate and a drawn metal plate. A receptacle is air-tightly formed of the planar thin plate and the drawn metal plate. The glass fibers are encased in the receptacle under a vacuum condition. A small amount of the glass fibers is penetrated thereinto in a direction perpendicular to the heat transfer direction of the insulator by inserting needles having hook portions into the glass fibers whereby the compressed glass fibers are kept under a vacuum condition at a high density without any remarkable deformation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.