Patent US2675609A successfully refreshed from Google Patents.
EP0451683A2
Expired / Lapsed
EP
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Propulsion process of buried pipe
Assignee: Kidoh Technical Ins Co Ltd
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Filing: 1991-04-03
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Granted: —
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Expires: 2011-04-03
Abstract
Abstract In a propulsion process of buried pipe, an endless pipe to be buried is formed by sequentially curving a pipe material (62) of long hoop shape made of a plastic material, and this endless pipe is successively inserted and propelled into the burying hole while forming the burying hole by propelling a leader (10) in the ground.
Inventors
- 👤 Koichi Kimura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 17:09
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/20; E21B19/00; E21B19/22; E21B7/00; E21B7/20; E21B7/201
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A propulsion process of buried pipe for propelling and burying a pipe in a burying hole while forming the burying hole by propelling a leader in the ground, wherein an endless pipe to be buried is formed by sequentially curving a pipe material of long hoop shape made of a plastic material, and this endless pipe is successively inserted and propelled into the burying hole.
Claim 2
Dependent Claim
55 words
A propulsion process of buried pipe as claimed in claim 1, wherein the endless pipe is inserted into the outer circumference of a propulsion support sequentially linked behind the leader, the endless pipe is held and fixed on the propulsion support, and a propulsion force is transmitted from the propulsion support to the endless pipe.
References Cited (Backward Citations)
No citation records indexed.
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