Title:
LID FOR UNDERGROUND STRUCTURE, GAS EXHAUST SYSTEM, AND METHOD FOR CONSTRUCTING GAS EXHAUST SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/029010
Kind Code:
A1
Abstract:
A lid (102) for an underground structure according to the present disclosure is provided to an underground structure (101), the lid (102) comprising: a main body (1) covering an opening that allows communication between an underground space (S1) and an above-ground space (S2), the main body (1) defining a through-hole (HL) that passes through the main body (1); and a flexible small lid (2) that is disposed in the through-hole (HL) so as to press against the inner-side surface of the main body (1), which defines the through-hole (HL).
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Inventors:
ISHIKAWA TAKUYA (JP)
ITASAKA KOJI (JP)
IZUMI TOSHIMITSU (JP)
NISHIYAMA DAISAKU (JP)
ITASAKA KOJI (JP)
IZUMI TOSHIMITSU (JP)
NISHIYAMA DAISAKU (JP)
Application Number:
PCT/JP2022/029858
Publication Date:
February 08, 2024
Filing Date:
August 03, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
E02D29/14
Foreign References:
| JPS6341652U | 1988-03-18 | |||
| GB2331539A | 1999-05-26 | |||
| JPH0233845U | 1990-03-02 | |||
| KR100856028B1 | 2008-09-02 | |||
| KR100762735B1 | 2007-10-02 | |||
| US4597692A | 1986-07-01 | |||
| JPH0734475A | 1995-02-03 | |||
| CN204530771U | 2015-08-05 | |||
| JPH11152764A | 1999-06-08 | |||
| EP1111138A2 | 2001-06-27 | |||
| JP2016160606A | 2016-09-05 | |||
| JPS578855U | 1982-01-18 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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