shelter

JP1813463SActive Publication Date: 2025-11-25NIPPON STEEL METAL PROD CO LTD
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Patent Information

Application Number
JP2025003045D
Authority / Receiving Office
JP · JP
Patent Type
Designs
Current Assignee / Owner
Filing Date
2025-02-18
Publication Date
2025-11-25
Estimated Expiration
2050-02-18

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Abstract

This is a prefabricated shelter that is installed on the ground and used as a bunker, general warehouse, or evacuation center. Liner plates are constructed in two stages by bolting them together circumferentially and axially, and H-shaped reinforcing rings are constructed by bolting them together circumferentially via coupling plates. These are alternately arranged and bolted together in a series to form a roughly portal-like tunnel shape with an arched roof.
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