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US 2025/0158374 A1Published application
Buried pipe and buried pipe protection method
AssigneeNippon Telegraph and Telephone Corporation
InventorsDaisaku NISHIYAMA, Koji ITASAKA, Takuya ISHIKAWA, Akira ITO
Life of this patent
Estimating the term…
Abstract
The buried pipe 1 includes an inner pipe 11 capable of housing a cable 9, a protection member 12 disposed on the outer circumference of the inner pipe 11, and an outer pipe 10 housing the protection member 12 and the inner pipe 11. The protection member 12 has a higher strength than the inner pipe 11 and the outer pipe 10.
Claims12
A buried pipe comprising:
- an inner pipe capable of housing a cable;
- a protection member disposed on an outer circumference of the inner pipe;
- and
- an outer pipe configured to house the protection member and the inner pipe,
- wherein the protection member has a higher strength than the inner pipe and the outer pipe.
2 more elements
A method of protecting a buried pipe that includes an outer pipe and performs protection, the method comprising:
- disposing a protection member that has a higher strength than the inner pipe and the outer pipe on an outer circumference of the inner pipe capable of housing a cable;
- and
- housing the inner pipe in which the protection member is disposed on an outer circumference in the outer pipe.
Dependencies are inferred from the claim text.