Determining device and determining method
US10261004B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2015 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Aug 12, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M99/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The purpose of the present invention is to provide a determining device and a determining method to determine whether an inspected jet nozzle is defective by inspecting the jet nozzle for injecting a jet stream with long ground penetrating distance at a stage before installing in a construction site where a large diameter jet grouting method is used. To achieve this purpose, with this invention, in which a nozzle to be inspected is mounted onto an outlet port, a jet stream is ejected from a jet stream generating device, and measurement data measured by a pressure sensing unit when the jet stream impacts the pressure sensing unit is processed with a controlling device (for example, a computer), a nozzle to be inspected is determined to be a non-defective product if a first ratio is no less than a first prescribed value, a second ratio is no less than a second prescribed value, and a third ratio is no less than a third prescribed value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.