[특허]Double-walled tube assembly

[미국특허] Double-walled tube assembly 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16L-009/18
출원번호	US-0108088 (1987-10-14)
우선권정보	JP-0245071 (1986-10-15)
발명자 / 주소	Hosono Masayuki (Sohka JPX) Waragai Kenji (Sohka JPX) Uejo Hirozo (Ube JPX) Tokumoto Mitsuru (Ube JPX)
출원인 / 주소	SMS Corporation (Tokyo JPX 03) Ube Industries, Ltd. (Ube JPX 03)
인용정보	피인용 횟수 : 56 인용 특허 : 1

초록 ▼

A double-walled tube assembly has an elongate inner tube of thermoplastic resin, and an elongate extruded outer tube of thermoplastic resin including a plurality of ribs having a constant height longitudinally of the outer tube and extending over the entire length of the outer tube, the ribs projecting toward the center of the outer tube. The ribs have distal ends fused to the outer perpiheral surface of the inner tube over the entire length of the inner and outer tubes. The rib width is from 0.5 to 1.5 mm. To continuously manufacture the double-walled tube assembly, the pre-molded inner tube is fed to an extrusion molding machine having a cross-head die, and thermoplastic resin is extruded from the cross-head die into an elongate outer tube around the inner tube. The inner tube and the extruded outer tube are fed into a sizing die device, in which the outer tube in a softened state is contracted toward the outer peripheral surface of the inner tube until the distal ends of the ribs of the outer tube are fused to the outer peripheral surface of the inner tube.

대표청구항 ▼

A double-walled tube assembly comprising: an elongate inner tube of thermoplastic resin; an elongate extruded outer tube of thermoplastic resin including a plurality of ribs having a constant height longitudinally of the outer tube and extending over the entire length of the outer tube, said ribs projecting from the inner wall surface of the outer tube toward the center of said outer tube; and said ribs having distal ends fused to the outer peripheral surface of said inner tube over the entire length of said inner and outer tubes; wherein said ribs range from 2 to 4 in number and each rib has a substantially constant width in the range of from about 0.1 to 1.5 mm.

이 특허에 인용된 특허 (1) 인용/피인용 타임라인 분석

Takahashi Keiichi (Ichikawa JPX), Thermoplastic multi-walled pipes.
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이 특허를 인용한 특허 (56) 인용/피인용 타임라인 분석

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Tase,Warren A.; Cheskaty,Rex; Grandlinard,Paul, Method of forming a jacketed steam distribution tube.
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A	생활필수품
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A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Double-walled tube assembly 원문보기