マンホール開口枠、マンホール用構造体、およびマンホールの開口部構造体

Title:

マンホール開口枠、マンホール用構造体、およびマンホールの開口部構造体

Document Type and Number:

Japanese Patent JP6796414

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a manhole opening frame requiring no space for placing a manhole lid when a manhole lid closing an opening of the manhole opening frame is removed.SOLUTION: A manhole opening frame 3 forms an opening 2 of a manhole 1. The manhole opening frame 3 is configured to close the opening 2 of the manhole 1 with a manhole lid 5. The manhole opening frame 3 has a hole forming part 9 that forms an insertion hole 15 into which the manhole lid 5 can be inserted vertically. The hole forming part 9 supports and holds the manhole lid 5 inserted into the insertion hole 15 in a vertical state.SELECTED DRAWING: Figure 3

More Like This:

JPS6013963	[Title of the device] The handle used for lids, such as a floor inspection door and a manhole
JPH0617878	[Name of device] Manhole cover

Inventors:

Mitsuhiko Shibuya
Fukuda
Tatsuhiro Harada
Morita Satomi

Application Number:

JP2016133615A

Publication Date:

December 09, 2020

Filing Date:

July 05, 2016

Export Citation:

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Assignee:

Haseko Corporation
Daiichi Kikai Co., Ltd.

International Classes:

E02D29/14; E03F5/02

Domestic Patent References:

JP10168921A
JP9125434A
JP2000153895A
JP2001159144A
JP2002266358A
JP2006200259A
JP3089260U

Foreign References:

US20150204046

Attorney, Agent or Firm:

Minoru Hotta
Toshihiro Nomura

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