Method for manufacturing a heat-insulating closed structure
US4016702A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1975 |
| Grant date | Apr 12, 1977 |
| Priority date | — |
| Expiry date | Oct 24, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A heat-insulating closed structure is disclosed which comprises an outer membrane formed of a gas-impervious substance, an inner membrane formed of a gas-pervious substance, a foamed member produced to fill the space between said outer membrane and inner membrane and a floor member made of a heat-insulating substance and adapted to allow the composite membrane unit formed of said two membranes and said intervening foamed member to be supported in position thereon. This structure is manufactured by interposing spaces between the outer membrane and the inner membrane, fastening the outer ends of said two membranes to the circumference of said heat-insulating floor member, inflating the enclosure formed of said two membranes by applying pressure to the inner room of said enclosure and then filling the intervening space between the two membranes with a foamed member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.