Thermally insulated double-walled synthetic resin container and thermally insulated double-walled synthetic resin lid
US5904264A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1996 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Sep 10, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7132
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A thermally insulated double-walled synthetic resin container having a thermal insulator layer filled with a low thermal conductivity gas, wherein the inner container and the outer container are formed from a chemical resistant resin, a hole portion is provided at the enter of the bottom wall of the outer container, this hole portion is sealed by a sealing panel formed from chemical resistant resin; a protrusion portion is formed on the thermal insulator layer side of the bottom central portion of the outer container and a depression portion aligned with the center of the protrusion portion is formed on the reverse side of this protrusion portion; or a metallic thin film layer is formed on the surfaces facing the thermal insulator layer aside from the area around the mouth; as a result of which the thermally insulated double-walled synthetic resin container is provided with exceptional thermal insulation capabilities and strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.