Tube body and pumping device
US11333142B2 · kind B2 · utility
0Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2020 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | Mar 12, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B43/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
There is disclosed a hollow tube body used for a liquid feeding member and deformable by pressurization, wherein: an axial cross-section of the tube body has two opposing long side parts and two opposing short side parts; four corner portions formed by the long side parts and the short side parts each have a shape curved to protrude outward; each of the long side parts has a recessed part recessed inward and continuing from the corner portions; and a portion other than the corner portions of each of the short side parts is in a flat shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.