Nozzle and vacuum unit with air and water
US10920397B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2018 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | Oct 12, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F5/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatuses that include a nozzle, vacuum units, and vacuum trucks for excavating material, for instance, around buried utility lines. Multiple embodiments include an (e.g., air and water) nozzle, for instance, that breaks up material (e.g., earth) that is picked up with vacuum. Various embodiments include vacuum, compressed air, and water systems. Various nozzles include two passageways or tubes (e.g., one inside the other), exit orifices (e.g., from each passageway), or a combination thereof. Tubes may be concentric or a passageway may be between inner and outer tubes. Nozzles may be configured to be hand guided by an operator while excavating the material. Embodiments may include air and water valves, controls, or both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.