[특허]Pipe joint sealer

[미국특허] Pipe joint sealer 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16J-015/10 F16L-021/00
출원번호	US-0532028 (1990-06-01)
발명자 / 주소	Andre James R. (Newport Beach CA) Carothers Paul A. (Carmichael CA)
출원인 / 주소	W. E. Hall Company (Newport Beach CA 02)
인용정보	피인용 횟수 : 36 인용 특허 : 0

초록 ▼

A pipe joint sealer for providing a watertight joint in metal pipe, cast concrete pipe, plastic pipe and the like is disclosed. The pipe joint sealer prevents fine dirt and sand from entering the pipe through the joint. The pipe joint sealer is comprised of an absorbent material such as low density, open cell, resilient foam which is saturated with a quantity of water reactive urethane prepolymer. The urethane prepolymer saturated foam is sandwiched between two layers of a geotextile fabric such as polypropylene which permit moisture to come into contact with the urethane prepolymer saturated foam. Moisture causes the urethane prepolymer saturated foam to expand and thereby form a dynamic watertight seal. Drying of the urethane prepolymer saturated foam causes it to shrink back toward its original volume. Thereafter, the pipe joint sealer of the present invention forms a new watertight seal each time it is wetted. This allows the pipe joint sealer to compensate for shifts in joint position caused by settling and the like. Plant root growth inhibitors such as copper, plant copper compounds and herbicides may be included in the urethane prepolymer.

대표청구항 ▼

A dynamic pipe joint sealer attachable to adjacent end portions of two sections of pipe for providing a water tight seal between the two sections of pipe and for preventing the introduction of foreign material into the interior of the pipe sections, the pipe joint sealer comprising: (a) a resilient substrate material, said substrate being impregnated with a urethane prepolymer so as to be reactive to moisture such that the substrate material expands when exposed to moisture and contracts toward substantially its original volume when dry; and (b) a durable fabric covering substantially surrounding said substrate material, said fabric being adapted to allow moisture to pass from the environment to the impregnated substrate while preventing the passage of foreign material and fines to the impregnated substrate. A method for sealing pipe joints comprising the steps of: (a) wrapping the pipe joint with a resilient substrate material impregnated with a urethane prepolymer so as to be reactive to moisture such that the substrate material expands when exposed to moisture and contracts toward substantially its original volume when dry, wherein said resilient substrate is substantially surrounded by a geotextile fabric covering adapted to allow moisture to pass from the environment to the impregnated substrate while preventing the passage of foreign material and fines to the impregnated substrate; and (b) applying a clamping device about said pipe joint such that the substrate material disposed within the geotextile covering is captured intermediate the clamping device and the pipe joint. A method of sealing a spigot and bell pipe joint comprising the steps of: (a) disposing a substrate material impregnated with a urethane prepolymer and enclosed within a geotextile fabric cover between the spigot and the bell of the pipe joint; and (b) compressing said substrate material disposed within the geotextile fabric between said spigot and said bell to maintain said substrate material in a position so as to be contacted by moisture extending about said bell and said spigot, expanding said substrate material by moisture absorption to form an expanded sealing at the pipe joint, and contracting said substrate material toward substantially its original volume upon removal of the moisture to a dry state for again expanding said substrate material upon reoccurring contact with moisture.

이 특허를 인용한 특허 (36) 인용/피인용 타임라인 분석

John K. Lewis, Adjustable pipe connector.
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Mathey, Jesse S., Apparatus for installing elongate seal strips.
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McAlister, Roy Edward, Apparatuses and methods for providing finger-tightened and ratchet-secured connections between conduits.
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Blasch Lawrence R. ; Lamping Frank G., Bulkhead fitting for underground sump.
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Patel, Jayant D.; Petersen, Clifford J.; Fuselier, Maggie E.; Wiratunga, Alfred R.; Motherwell, Annette D.; Amorim, Vitor M., Clamp tension compensating, self-sustaining cuff apparatus and method.
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Lewis John K., Corrosion barrier with antibacterial protection for pipe connections.
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Mavrakis, Rick; Pope, Brian; Shah, Samir; O'Neal, Christopher Leland; Laybourn, David, Drip emitter.
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Mavrakis, Rick; Pope, Brian; Shah, Samir; O'Neal, Christopher Leland; Leybourn, David, Drip emitter.
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Park, Joshua; Antonucci, Thomas; St. Vaughn, Josh, Drip emitter.
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Turk, Michael F., Drip emitter.
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Kim, Jae Yung; Edris, Mark Richard; Ensworth, Mark M.; Donoghue, Michael Leo; Zakarian, Berj, Drip line and emitter and methods relating to same.
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Ensworth, Mark M.; Kim, Jae Yung; Edris, Mark Richard; Nazari, Joseph, Elastomeric emitter and methods relating to same.
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Ensworth, Mark M.; Kim, Jae Yung; Edris, Mark Richard; Nazari, Joseph, Elastomeric emitter and methods relating to same.
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Ensworth, Mark M.; Kim, Jae Yung; Edris, Mark Richard; Nazari, Joseph, Elastomeric emitter and methods relating to same.
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Polak Anthony J. (Lake Zurich IL) Vandommelen Charles (Villa Park IL) Ostrem Fred E. (Long Grove IL), Electronic control module having fluid-tight seals of a polymer material which expands when wet.
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Ensworth, Mark M.; Kim, Jae Yung; Edris, Mark Richard; Nazari, Joseph, Emitter inlet.
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Ensworth, Mark M.; Kim, Jae Yung; Edris, Mark Richard; Nazari, Joseph, Emitter part.
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Duininck,Jeremy N.; Pluimer,Michael L., Fluid-tight coupling system for corrugated pipe.
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Kim Sun Ki,KRX, Heat shrinkable shielding tube.
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Topolkaraev, Vasily A.; Soerens, Dave A., Humidity activated materials having shape-memory.
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Feith, Raymond P.; Mattlin, Jeffrey Lee, Low flow irrigation emitter.
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Burwell, John; Abel, Don; Batzkiel, Chester; Carty, Greg; Gomez, Onesimo; Lehman, David; Sanchez, Roberto; Berg, Sr., Robin L., Method and apparatus for pressure testing storage tanks.
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Markusch, Peter H.; Guether, Ralf; Payne, LeRoy, Method for producing a polyurethane/geofabric composite.
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Zakarian, Berj; Feith, Raymond P.; Edris, Mark Richard; Ensworth, Mark M., Methods and apparatus for transporting elastomeric emitters and/or manufacturing drip lines.
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Cataldo,Dominic A.; Lipinsky,Edward S.; Voris,Peter Van; Beck,Daren L.; Beck,Richard, Methods and products to protect against root intrusion and plant and root growth.
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Topolkaraev, Vasily A.; Soerens, Dave A., Methods of making humidity activated materials having shape-memory.
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Bruce, Mark H., Polymer reinforcement for a clay pipe joint.
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Valenziano Frank P., Protective sleeve and related method for protecting a buried pipe joint.
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Maderek Eugeniusz,DEX, Sealing tape for sealing pipe joints.
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Grabowski, Richard M.; Grabowski, Suzan A., Self-forming structures.
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Sutherland Ian B. (Kitchener CAX) Paleczny Anthony R. (Kitchener CAX), Self-lubricating sealing ring.
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Patel Jayant Dahyabhai ; Petersen Clifford John ; Talamantez Ronald Joseph, Sleeve for joining tubular conduits.
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Lamping Frank G., Structure for protecting a bulkhead fitting.
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Kirjavainen,Kari; J��rvenkyl��,Jyri, Tubular product.
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Kuo, Hsiu-Yu, Waterproof assembly for electronic device and watertight door thereof.
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Martin, Everett Nelson, Watertight joint seal for concrete structures.
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[미국특허] Pipe joint sealer 원문보기

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