[특허]Electrothermal fusion of large diameter pipes by electric heating wire wrapping and sleeve connector

[미국특허] Electrothermal fusion of large diameter pipes by electric heating wire wrapping and sleeve connector 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B32B-031/00 F16L-021/00
출원번호	US-0004789 (1993-01-14)
발명자 / 주소	Inhofe Jr. James A. (Sapulpa OK 74066)
출원인 / 주소	Central Plastics Company (Shawnee OK 02)
인용정보	피인용 횟수 : 28 인용 특허 : 0

초록 ▼

Methods of producing electrically fusable sleeve connectors for connecting large diameter thermoplastic pipe sections and the sleeve connectors produced by such methods are provided. Methods of sealingly connecting adjacent ends of a pair of large diameter thermoplastic pipe sections by electric fusion are also provided. The methods of producing electrically fusable thermoplastic sleeve connectors broadly include the steps of winding a tape of molten thermoplastic material onto a large diameter core drum whereby adjacent windings are fused and upon being cooled a solid sleeve is formed, embedding an electric resistance heating wire in a surface of the sleeve while the thermoplastic material is still in the molten state and removing the sleeve after cooling with electric resistance heating wire embedded therein from the core drum.

대표청구항 ▼

A method of sealingly connecting adjacent ends of a pair of large diameter thermoplastic pipe sections by electric fusion comprising: (a) moving a thermoplastic sleeve connector of constant thickness having a large sleeve interior diameter and a large sleeve exterior diameter and having a linear, longitudinal split extending along the entire length of said sleeve and wherein said split is further characterized by a first substantially straight edge and a second substantially straight edge and wherein said first and second edges have substantially flat first and second faces which define said split over the end and a distance down the length of a first of said thermoplastic pipe sections and reducing said sleeve interior diameter to accommodate the external diameter of said thermoplastic pipe sections; (b) placing the second of said pipe sections in alignment with said first pipe section whereby an end of said second pipe section is positioned adjacent an end of said first pipe section; (c) after step (b) helically winding an electric resistance heating wire around the external surfaces of said pipe sections next to the adjacent ends thereof so that said electric resistance heating wire is in direct contact with the external surfaces of said pipe sections; (d) after step (c) moving said sleeve to a position over the adjacent ends of said pipe sections and over said electric resistance wire wound on said pipe sections and closing said sleeve so that said first flat face and said second flat face meet without overlap to form a substantially continuous sleeve outer surface; and (e) applying an electric current to said electric resistance heating wire for a period of time such that the thermoplastic materials making up adjacent portions of said sleeve and pipe sections are sealingly fused together.

이 특허를 인용한 특허 (28) 인용/피인용 타임라인 분석

Wermelinger, Joerg; Hein, Oliver, Chamber coupler.
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Ziu Christopher G. (7 Douglas St. Merrimack NH 03054), Closure fitting and flexibility support assembly for double-containment piping systems.
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Conrad, Wayne Ernest; Conrad, Nina; Burke, Brian; Vivian, Don, Cutting tool and methods for use.
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Conrad, Wayne Ernest; Conrad, Nina; Burke, Brian; Vivian, Don, Cutting tool and methods for use.
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Theodore Von Arx, Electrofusing of thermoplastic heating elements and elements made thereby.
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Barnes, Stephen, Electrofusion fittings and methods.
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LaMarca, Drew; Zich, Tom, Electromagnetic bond welding of thermoplastic pipe distribution systems.
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James M. Rutherford, Fibrous supported polymer encapsulated electrical component.
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Rutherford James M., Fibrous supported polymer encapsulated electrical component.
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Ziu Christopher G., Flexibility support assembly for double-containment piping system.
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VonArx, Theodore; Tweedy, Clifford D.; Laken, Keith; Adank, David, Flexible spirally shaped heating element.
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Dude, Holger; Fuchs, Thomas, Heatable connection apparatus including media-conducting, electrically heatable hoses.
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Grant, Mike A.; Tweedy, Clifford D.; Schlesselman, John W., Internal heating element for pipes and tubes.
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Conrad, Wayne Ernest, Method and apparatus for connecting pipes.
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Silagyi, Jerome S.; Dick, Mark; Chestnut, Brian, Method for coupling corrugated pipe segments.
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Risquez,Jos？; Kuczynski,Jerzy, Method for making a printing blanket.
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Von Arx, Theodore; Laken, Keith; Schlesselman, John W., Method of formable thermoplastic laminate heated element assembly.
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Charles M. Eckman ; James S. Roden, Method of making an improved polymeric immersion heating element with skeletal support and optional heat transfer fins.
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Von Arx, Theodore; Laken, Keith; Schlesselman, John W.; Papenfuss, Ronald E., Method of manufacturing a molded heating element assembly.
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Kusek Walter W., Method of manufacturing a sheathed electrical heater assembly.
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Theodore Von Arx ; Keith Laken, Modular heat exchanger.
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Theodore Von Arx ; Keith Laken ; John W. Schlesselman ; Ronald E. Papenfuss, Molded assembly with heating element captured therein.
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Von Arx, Theodore; Laken, Keith; Schlesselman, John W.; Tweedy, Clifford D., Packaging having self-contained heater.
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Conrad, Wayne Ernest; Conrad, Nina; Burke, Brian; Vivian, Don; Millman, Allan, Pipe joining material for connecting pipes.
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Conrad, Wayne Ernest; Conrad, Nina; Burke, Brian; Vivian, Don; Millman, Allan, Pipe joining material for connecting pipes.
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Conrad, Wayne Ernest; Conrad, Nina; Burke, Brian; Vivian, Don; Wajda, Tomasz F., Pipe sealing tool and methods for use.
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Tweedy, Clifford D.; VonArx, Theodore, Small diameter low watt density immersion heating element.
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Scholl Reinhold,DEX, Welding collar.
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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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[미국특허] Electrothermal fusion of large diameter pipes by electric heating wire wrapping and sleeve connector 원문보기