Tube infrastructure with vacuum pressure
US11320070B2 · kind B2 · utility
1Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2018 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Jan 1, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L2201/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tube infrastructure includes a first tube; a second tube that is coupled to the first tube; and a fluid tank that is disposed to surround a coupling region of the first tube and the second tube and is filled with a fluid to seal the coupling region, wherein the fluid tank allows negative pressure to be maintained inside the first tube and the second tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.