[특허]Multi-stage dual wall hydroforming

Multi-stage dual wall hydroforming 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B21D-039/08 B21D-003/00 B23P-011/02 F16L-009/18
출원번호	US-0065126 (1993-05-20)
발명자 / 주소	Wells Gary L. (Kalamazoo MI) Dehlinger James R. (Ada MI) Rigsby Donald R. (Jenison MI)
출원인 / 주소	Benteler Industries, Inc. (Grand Rapids MI 02)
인용정보	피인용 횟수 : 34 인용 특허 : 0

초록 ▼

A method of forming a dual tube conduit having a predetermined outer tube dimension, a predetermined inner tube dimension, and a predetermined gap between the tubes. A dual tube workpiece may be initially bent in one or more zones to a desired nonlinear configuration, the inner and outer tubes are hydroform expanded simultaneously to obtain the selected inner tube dimension, and the outer tube is then hydroform expanded to the desired outer tube dimension and to the desired gap therebetween, while the inner tube is held constant.

대표청구항 ▼

A method of forming a configurated dual tube metal conduit with controlled spacing between the inner and outer tubes comprising the steps of: providing a dual tube workpiece of metal having a pair of open ends, an inner tube and an outer tube in telescopic engagement with each other, and openings through said inner tube adjacent at least one of said ends; providing sealing end plugs having annular seals thereon; bending said dual tube workpiece to a predetermined configuration; inserting said sealing end plugs in said workpiece ends to a depth sufficient to cover said openings, and sealing said open ends of said workpiece; first expanding both of said inner and outer tubes simultaneously by filling said workpiece with fluid and increasing the pressure of said fluid sufficient to cause said inner and outer walls to simultaneously expand a controlled amount to a desired size of said inner tube; withdrawing said sealing plugs to uncover said openings; and repressurizing fluid in said workpiece to cause flow through said openings and between said inner and outer tubes, to expand only said outer tube to its final outside shape and size which results in a predetermined spacing from said inner tube, and thereby form the dual wall metal conduit.

이 특허를 인용한 특허 (34)

Bonny, Pierre; Huelsberg, Thomas, Air gap insulated exhaust pipe with branch pipe stub and method of manufacturing same.
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Bonny, Pierre; Huelsberg, Thomas, Air gap insulated exhaust pipe with branch pipe stub and method of manufacturing same.
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Pierre Bonny DE; Thomas Huelsberg DE, Air gap insulated exhaust pipe with branch pipe stub and method of manufacturing same.
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Brown, James H., Apparatus and method for creating a seal on an inner wall of a tube for hydroforming.
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Roper Ralph E., Apparatus and method for forming a tubular frame member.
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Brown James H. ; Webb Gary A., Apparatus and method for hydroforming.
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Mason Murray R.,CAX ITX N4S 7W3 ; Klages Gerrald A.,CAX ITX N4S 8X5, Apparatus for expansion forming of tubing forming of tubing.
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Bonny Pierre,DEX ; Huelsberg Thomas,DEX, Arrangement for the internal high-pressure forming of hollow profiles.
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Rigsby Donald R. (Jenison MI), Controlled time-overlapped hydroforming.
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Hein, Jorg; Rost, Andre; Goger, Aslan, Device for forming a hollow profile by means of internal high pressure forming.
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Ishizu, Seiji; Wakide, Kazushi; Nobata, Yasuhiro; Yamamoto, Akiyoshi; Hangeishi, Suekichi; Yashima, Mamoru, Double-pipe-structure hollow member, method of manufacturing double-pipe-structure hollow member, and fluid treating system employing double-pipe-structure hollow member.
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Gabriel, Heinrich; Bolte, Albrecht; Humburg, Erhardt; Smatloch, Christian; Kleinschmidt, J?rgen, Exhaust pipe, and method of making an exhaust pipe.
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Dehlinger James R. (Ada MI) Crawford Roger A. (Muskegon MI) Poole Wallace J. (Fremont MI) Shaffer Robert A. (Comstock Park MI) VandePolder Donald R. (Grand Rapids MI), Extended jacket end, double expansion hydroforming.
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Dehlinger James R. ; Crawford Roger A. ; Poole Wallace J. ; Shaffer Robert A. ; VandePolder Donald R., Extended jacket end, double expansion hydroforming.
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Freeman Richard B. ; Handley Mark C., Forming technique using discrete heating zones.
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Takahashi,Junichi, Hydroform process and hydroform product.
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Kocer Bruce D. ; O'Connor James P. ; Bihrer Hans Otto, Hydroformed control arm.
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Genise,David Gerard; Zampaloni,Suzanne M.; Harman,Andrew P.; Zampaloni,Michael A.; Pourboghrat,Farhang, Hydroformed port liner.
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Rigsby Donald R. ; Abbott Jerome C., Hydroforming offset tube.
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Rigsby Donald R. ; Abbott Jerome C., Hydroforming offset tube.
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Separautzki Reinhold,DEX, Internal high pressure formed nodal connection element for a frame construction, and method of making same.
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Freeman Richard Benjamin, Internal hydroformed reinforcements.
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Ash Stanley P. (Greenville MI), Liquid impact tool forming mold.
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Horton Frank A., Method and apparatus for wrinkle-free hydroforming of angled tubular parts.
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Birkert,Arndt; Schneider,Sven, Method and device using high interior pressure to reshape structural section.
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Mason Murray R.,CAX ; Klages Gerrald A.,CAX, Method for expansion forming of tubing.
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Ash Stanley P., Method of forming and piercing a tube.
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Marando Richard A. ; Sanko Thomas R. ; Schrack Eric M., Method of hydroforming a vehicle frame component.
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Ni,Chi Mou; Strzelecki,Edward J., Method of progressive hydro-forming of tubular members.
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Bihrer Hans Otto, Multi-piece hydroforming tool.
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Petkovsek, Robert Raymond; Hagedorn, Louis, Multi-walled tube and method of manufacture.
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Pierre Bonny DE; Thomas Huelsberg DE, Process of manufacturing an air-gap-insulating exhaust elbow of a vehicle exhaust system.
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Park, Sung-Pill; Jin, Kyung-Soo; Kim, Yun-Gyu; Moon, Man-Been, Water pipe for which hydroforming is employed, and a production method therefor.
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Park, Sung-Pill; Jin, Kyung-Soo; Kim, Yun-Gyu; Moon, Man-Been, Water pipe for which hydroforming is employed, and a production method therefor.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
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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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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Multi-stage dual wall hydroforming 원문보기

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Multi-stage dual wall hydroforming 원문보기

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이 특허를 인용한 특허 (34)

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