Title:
HIGH-PRESSURE JET NOZZLE DEVICE AND FOUNDATION IMPROVING DEVICE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2023/238415
Kind Code:
A1
Abstract:
A conventional high-pressure jet nozzle device uses an air cover having a plurality of inclined grooves formed on the inner circumferential surface, and is thus problematic in that the air cover can be damaged by a hardening-material liquid that has been ejected and splashed back (including crushed solids and the ground), and needs to be replaced every time the air cover is damaged, requiring a large amount of repairing and replacing cost every time the air cover is replaced. In the present invention, an outer circumferential inclined groove member 32A is provided in which inclined grooves 32a inclined in substantially the same oblique direction oriented in a tip-end direction are formed on the inner circumferential surface. Thus, the repairing and replacing cost can be reduced.
Inventors:
MATSUMOTO TAKUYA (JP)
Application Number:
PCT/JP2022/023553
Publication Date:
December 14, 2023
Filing Date:
June 11, 2022
Export Citation:
Assignee:
KIBANGIKEN CO LTD (JP)
CHIKABOSUIKOGYO CO LTD (JP)
CHIKABOSUIKOGYO CO LTD (JP)
International Classes:
E02D3/12
Foreign References:
| JP6754914B1 | 2020-09-16 | |||
| JP2017125397A | 2017-07-20 | |||
| JP2012136844A | 2012-07-19 | |||
| JP2001303543A | 2001-10-31 | |||
| JP2001303542A | 2001-10-31 | |||
| JP2018150706A | 2018-09-27 |
Attorney, Agent or Firm:
MAEDA Kenichi (JP)
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