Double-walled container with dual openings
US11034478B1 · kind B1 · utility
1Cited by
0References
20Claims
0Family size
Inventors
Key dates
| Filing date | Dec 4, 2018 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Nov 27, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45F3/166
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A double-walled container includes a top opening, and a bottom opening, opposite the top opening. A removable top cap engages with threads at the top opening and a removable bottom cap engages with threads at the bottom opening. The double-walled container includes an outer wall and an inner wall. A channel formed on and encircling the outer wall includes a vacuum port through which air between the outer and inner walls is drawn out to form an insulating space between the inner and outer walls. A band is positioned within the channel to cover the vacuum port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.