The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 1987
Filed:
Dec. 17, 1985
Masakatsu Hyodo, Osaka, JP;
Isaburo Yagi, Osaka, JP;
Ashimori Industry Co., Ltd., , JP;
Abstract
A tubular lining material for reinforcing pipe lines, which has a double-layered structure comprising an air-impervious outer tubular textile jacket provided on the inside thereof with a reinforcing inner tubular textile jacket, characterized in that the reinforcing tubular textile jacket is more coarse in weaving density and larger in diameter than the air-impervious tubular textile jacket and that the product of the length of the diameter and the elongation ratio in the direction of the diameter on fracture, of the air-impervious tubular textile jacket is approximately equal to the product of the length of the diameter and the elongation ratio in the direction of the diameter on fracture of the reinforcing tubular textile jacket. The tubular lining material is excellent in both pressure-resistance and earthquake-resistance so that even if the pipe lines are cracked or broken off by strong external force caused, for example, by earthquake, the tubular lining material is merely detached from the damaged pipe lines, without being destroyed, to maintain its function of providing a passageway for a fluid transported under high pressure.