GB2076489A - Pipe repair joint - Google Patents

Pipe repair joint Download PDF

Info

Publication number
GB2076489A
GB2076489A GB8017004A GB8017004A GB2076489A GB 2076489 A GB2076489 A GB 2076489A GB 8017004 A GB8017004 A GB 8017004A GB 8017004 A GB8017004 A GB 8017004A GB 2076489 A GB2076489 A GB 2076489A
Authority
GB
United Kingdom
Prior art keywords
joint
sleeve
heating element
pipe
inner sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB8017004A
Other versions
GB2076489B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB8017004A priority Critical patent/GB2076489B/en
Publication of GB2076489A publication Critical patent/GB2076489A/en
Application granted granted Critical
Publication of GB2076489B publication Critical patent/GB2076489B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
    • B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
    • B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • B29C61/0608—Making preforms having internal stresses, e.g. plastic memory characterised by the configuration or structure of the preforms
    • B29C61/0625—Preforms comprising incorporated or associated heating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/344—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint being a woven or non-woven fabric or being a mesh
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/3444—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint being a ribbon, band or strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/3444—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint being a ribbon, band or strip
    • B29C65/3448—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint being a ribbon, band or strip said ribbon, band or strip being perforated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/3444—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint being a ribbon, band or strip
    • B29C65/3452—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint being a ribbon, band or strip forming a sleeve, e.g. a wrap-around sleeve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/3456—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint being a layer of a multilayer part to be joined, e.g. for joining plastic-metal laminates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3468—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/66—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined
    • B29C65/68—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined using auxiliary shrinkable elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52298—Joining tubular articles involving the use of a socket said socket being composed by several elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53241—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being tubular and said substantially annular single elements being of finite length relative to the infinite length of said tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91218—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods using colour change, e.g. using separate colour indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91221—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the parts to be joined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/20—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics
    • F16L47/22—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics using shrink-down material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
    • F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0049—Heat shrinkable

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Textile Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Means and method for joining pipes, especially effecting a repair to a damaged pipe, the means comprising a sleeve for fitting on the pipe and comprising a material which shrinks on the application of heat, and a heating element for effecting the shrinkage. The sleeve includes inner and outer sleeves 11, 12 with a woven wire braid heating element 13 therebetween. The sleeves 11, 12 are of primary metal or heat shrinkable plastics material and end seals 14 of similar plastics material are also provided. <IMAGE>

Description

SPECIFICATION Pipe repair joint The present invention relates to joints in pipes.
It is particularly concerned with joints to be effected on pipes in situ.
According to the present invention a joint for use on pipes comprises a sleeve of material which shrinks on the application of heat, and a heating element contiguous and concentric with the sleeve for heating the sleeve and effecting the shrinkage.
According to a feature of the invention the joint may comprise an inner sleeve for bearing on the pipe outer surface, an outer sleeve surrounding the inner sleeve and a heating element sandwiched between the inner and the outer sleeve.
The inner sleeve may be made of a thermosetting resin prepreg, nickel-titanium or yellow-metal memory metal, or a shrinkable thermoplastic. It may be arranged to seal onto a pipe direct or it may incorporate or be arranged to receive compressible seals for so doing. A typical and suitable memory metal is that sold by Raychem Ltd under the Trade Mark "Bettalloy".
The outer sleeve where fitted may simply be a jacket of insulative material. Alternatively it may itself be made of a heat shrink material, preferably insulative, in order to reinforce the seal effected by the joint, particularly during curing.
The heating element preferably comprises a woven sleeve of metal wire braid which will readily shrink with the inner sleeve and, where surrounded by a shrinking outer sleeve, will reinforce the joint as a whole. Alternatively the heating element may comprise a coil of resistance wire, a thin sheet or layer, perhaps perforated, and may be made of other electrically conductive material.
At each end of the joint the heating element may have an electrical contact for enabling connection to a source of power. As it may be preferred however that the joint be prepared initially as a length of tube which can be cut to a desired length, electrical contacts, if such are employed, may be arranged to be attachable after cutting. Thus a kit of joints in accordance with the invention may comprise a plurality of joints of different diameters, perhaps incorporating seals and contacts, or a plurality of lengths of joints of different diameters, perhaps supplied with a plurality of seals and contacts for fitting to the joints post cutting to length.
The joint may carry some temperature indicating paint to indicate progress of the cure or shrinkage of the joint.
Joints in accordance with the invention are suitable for use in effecting repairs to pipes in the event of fracture or leaks, and may be temporary or permanent. They are particularly useful in situations where the application of external heat, by open flame say, is unacceptable.
Two embodiments of the present invention will now be described by way of example, with reference to the accompanying drawings, of which: Figure 1 is a sectional view of a joint according to the first embodiment, and Figure 2 is a part sectional view of a joint according to the second embodiment.
The joint illustrated in the Figure 1 is as fitted to a fractured pipe 10, prior to curing. It comprises an inner sleeve 11 and an outer sleeve 12 sandwiching a heating element 13. At both ends of the joint a seal 14 fits between the inner sleeve 11 and the pipe 10 and a contact ring 15 between the element 13 and the outer sleeve 12.
The inner and outer sleeves 11 and 12 are made of an insulative thermoplastic material which shrinks when heated. The heating element 13 comprises a woven wire braid sleeve. The seal 14 is of heat resistant resilient plastics and the contact ring 15 is a metal coil having an outwardly projecting prong 1 spa. A strip of temperature indicating paint 1 6 runs the length of the joint.
The joint is supplied as a length of hose and the user will cut it to cover well the fracture shown in the pipe 10. The seals 14 are offered to the pipe first, together with the contact ring. The joint is then fed onto the pipe 10 and the seals 14 urged under the ends of the inner sleeve 11. The outer layer 12 is peeled back at both ends, the contact ring 1 5 urged over the element 13 and the outer sleeve 12 replaced.
A suitable source of electric power is connected to the prong 15b, and the element 13 heats the joint and causes it to shrink onto the pipe 10 and to compress the seal 14. When the paint strip 16 has reached the correct colour the electrical supply is removed.
The joint illustrated in Figure 2 is like that of Figure 1 , shewn fitted to a fractured pipe 20, prior to curing. It comprises an inner sleeve 21 made of yellow-metal, surrounded by two sleeves 22 and 23 which sandwich a heating element 24. The sleeves 22 and 23 are formed of electrically insulative thermo-plastic material which shrinks when heated. The heating element 24 is formed of woven wire braid sleeve. At both ends of the joint a seal 25 fits between the pipe 20 and the inner sleeve 21, and a contact ring 26 between the heating element 24 and the outer sleeve 23. The contact ring 26 is a metal coil having an outwardly projecting prong 26a. A strip 27 of temperature indicating paint runs the length of the joint.
The joint is supplied and fitted in a manner similar to the embodiment described with reference to Figure 1.
1. A joint for use on pipes and comprising a sleeve having material which shrinks when heat is applied, and a heating element contiguous with the sleeve for heating the sleeve material and effecting the shrinkage.
2. A joint as claimed in claim 1 and wherein the sleeve comprises the said material and the heating element is concentric with the sleeve.
3. A joint as claimed in claim 1 or claim 2 and
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (16)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Pipe repair joint The present invention relates to joints in pipes. It is particularly concerned with joints to be effected on pipes in situ. According to the present invention a joint for use on pipes comprises a sleeve of material which shrinks on the application of heat, and a heating element contiguous and concentric with the sleeve for heating the sleeve and effecting the shrinkage. According to a feature of the invention the joint may comprise an inner sleeve for bearing on the pipe outer surface, an outer sleeve surrounding the inner sleeve and a heating element sandwiched between the inner and the outer sleeve. The inner sleeve may be made of a thermosetting resin prepreg, nickel-titanium or yellow-metal memory metal, or a shrinkable thermoplastic. It may be arranged to seal onto a pipe direct or it may incorporate or be arranged to receive compressible seals for so doing. A typical and suitable memory metal is that sold by Raychem Ltd under the Trade Mark "Bettalloy". The outer sleeve where fitted may simply be a jacket of insulative material. Alternatively it may itself be made of a heat shrink material, preferably insulative, in order to reinforce the seal effected by the joint, particularly during curing. The heating element preferably comprises a woven sleeve of metal wire braid which will readily shrink with the inner sleeve and, where surrounded by a shrinking outer sleeve, will reinforce the joint as a whole. Alternatively the heating element may comprise a coil of resistance wire, a thin sheet or layer, perhaps perforated, and may be made of other electrically conductive material. At each end of the joint the heating element may have an electrical contact for enabling connection to a source of power. As it may be preferred however that the joint be prepared initially as a length of tube which can be cut to a desired length, electrical contacts, if such are employed, may be arranged to be attachable after cutting. Thus a kit of joints in accordance with the invention may comprise a plurality of joints of different diameters, perhaps incorporating seals and contacts, or a plurality of lengths of joints of different diameters, perhaps supplied with a plurality of seals and contacts for fitting to the joints post cutting to length. The joint may carry some temperature indicating paint to indicate progress of the cure or shrinkage of the joint. Joints in accordance with the invention are suitable for use in effecting repairs to pipes in the event of fracture or leaks, and may be temporary or permanent. They are particularly useful in situations where the application of external heat, by open flame say, is unacceptable. Two embodiments of the present invention will now be described by way of example, with reference to the accompanying drawings, of which: Figure 1 is a sectional view of a joint according to the first embodiment, and Figure 2 is a part sectional view of a joint according to the second embodiment. The joint illustrated in the Figure 1 is as fitted to a fractured pipe 10, prior to curing. It comprises an inner sleeve 11 and an outer sleeve 12 sandwiching a heating element 13. At both ends of the joint a seal 14 fits between the inner sleeve 11 and the pipe 10 and a contact ring 15 between the element 13 and the outer sleeve 12. The inner and outer sleeves 11 and 12 are made of an insulative thermoplastic material which shrinks when heated. The heating element 13 comprises a woven wire braid sleeve. The seal 14 is of heat resistant resilient plastics and the contact ring 15 is a metal coil having an outwardly projecting prong 1 spa. A strip of temperature indicating paint 1 6 runs the length of the joint. The joint is supplied as a length of hose and the user will cut it to cover well the fracture shown in the pipe 10. The seals 14 are offered to the pipe first, together with the contact ring. The joint is then fed onto the pipe 10 and the seals 14 urged under the ends of the inner sleeve 11. The outer layer 12 is peeled back at both ends, the contact ring 1 5 urged over the element 13 and the outer sleeve 12 replaced. A suitable source of electric power is connected to the prong 15b, and the element 13 heats the joint and causes it to shrink onto the pipe 10 and to compress the seal 14. When the paint strip 16 has reached the correct colour the electrical supply is removed. The joint illustrated in Figure 2 is like that of Figure 1 , shewn fitted to a fractured pipe 20, prior to curing. It comprises an inner sleeve 21 made of yellow-metal, surrounded by two sleeves 22 and 23 which sandwich a heating element 24. The sleeves 22 and 23 are formed of electrically insulative thermo-plastic material which shrinks when heated. The heating element 24 is formed of woven wire braid sleeve. At both ends of the joint a seal 25 fits between the pipe 20 and the inner sleeve 21, and a contact ring 26 between the heating element 24 and the outer sleeve 23. The contact ring 26 is a metal coil having an outwardly projecting prong 26a. A strip 27 of temperature indicating paint runs the length of the joint. The joint is supplied and fitted in a manner similar to the embodiment described with reference to Figure 1. CLAIMS
1. A joint for use on pipes and comprising a sleeve having material which shrinks when heat is applied, and a heating element contiguous with the sleeve for heating the sleeve material and effecting the shrinkage.
2. A joint as claimed in claim 1 and wherein the sleeve comprises the said material and the heating element is concentric with the sleeve.
3. A joint as claimed in claim 1 or claim 2 and comprising an inner sleeve and an outer sleeve and wherein the heating element is sandwiched between the two sleeves.
4. A joint as claimed in claim 3 and wherein the inner sleeve includes or comprises the said material.
5. A joint as claimed in claim 3 or claim 4 and wherein the outer sleeve is insulative.
6. A joint as claimed in any one of claims 1 to 5 and wherein the said material is a thermosetting resin prepreg.
7. A joint as claimed in any one of claims 1 to 5 and wherein the said material comprises nickeltitanium memory metal.
8. A joint as claimed in any one of claims 1 to 5 and wherein the said material comprises yellowmetal memory metal.
9. A joint as claimed in any one of claims 1 to 5 and wherein the said material comprises a shrinkable thermoplastic.
10. A joint as claimed in any one of the preceding claims and incorporating at least one compressible seal.
11. A joint as claimed in any one of the preceding claims and wherein the heating element comprises a woven sleeve of electrically conductive braid.
12. A joint as claimed in any one of the preceding claims and preformed as a length of tube which can be cut to a desired length
13. A joint as claimed in any one of the preceding claims and carrying a temperature indicator.
14. A method for repairing a fractured pipe and comprising fitting over the pipe a joint according to any one of the preceding claims and applying an electric current to the heating element to shrink the joint around the pipe.
1 5. A joint substantially as hereinbefore described with reference to the accompanying drawings.
16. A method of effecting a joint substantially as hereinbefore described with reference to the accompanying drawings.
GB8017004A 1980-05-22 1980-05-22 Pipe repair joint Expired GB2076489B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8017004A GB2076489B (en) 1980-05-22 1980-05-22 Pipe repair joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8017004A GB2076489B (en) 1980-05-22 1980-05-22 Pipe repair joint

Publications (2)

Publication Number Publication Date
GB2076489A true GB2076489A (en) 1981-12-02
GB2076489B GB2076489B (en) 1984-05-16

Family

ID=10513613

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8017004A Expired GB2076489B (en) 1980-05-22 1980-05-22 Pipe repair joint

Country Status (1)

Country Link
GB (1) GB2076489B (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0157640A2 (en) * 1984-04-04 1985-10-09 RAYCHEM CORPORATION (a Delaware corporation) Heat recoverable articles comprising conductive polymer compositions
EP0172039A2 (en) * 1984-08-17 1986-02-19 Raychem Limited Fibre reinforced polymeric article
EP0175554A2 (en) * 1984-09-14 1986-03-26 Raychem Limited Shaped woven fabrics
GB2181201A (en) * 1985-09-30 1987-04-15 Hepworth Iron Co Ltd Coupling pipes
US4709948A (en) * 1985-08-19 1987-12-01 Raychem Limited Fibre reinforced polymeric article
US4832382A (en) * 1987-02-19 1989-05-23 Raychem Corporation Coupling device
US4853165A (en) * 1984-04-04 1989-08-01 Raychem Corporation Method of using heat-recoverable articles comprising conductive polymer compositions
US4866252A (en) * 1986-05-06 1989-09-12 Nv Raychem Sa Heat-recoverable article
FR2654978A1 (en) * 1989-11-29 1991-05-31 Gaz De France IMPROVED ELECTRIC RESISTANCE TYPE CONNECTION PIECE FOR THERMOSOUDING MEETING OF PLASTIC ELEMENTS.
US5030487A (en) * 1984-04-04 1991-07-09 Raychem Corporation Heat recoverable article comprising conductive polymer compositions
US5169176A (en) * 1989-02-10 1992-12-08 Brossard Robert L Heat shrinkable clamping, connecting, repair, and reinforcing sleeve and method of use
ES2116822A1 (en) * 1994-02-08 1998-07-16 Maceda Pedro Juan Joint for sealing pipes
EP1087171A1 (en) * 1999-08-27 2001-03-28 Star Pipe, AS Dansk Rorindustri Electric welding sleeve and method of making same
GB2470413A (en) * 2009-05-22 2010-11-24 Radius Systems Ltd Pipe coupling
US9669580B2 (en) 2011-11-09 2017-06-06 Saipem S.P.A. Method and apparatus for heating heat-shrinkable pipe sleeves
EP4385900A1 (en) * 2022-12-12 2024-06-19 Hamilton Sundstrand Corporation Wear resistant sleeve for composite cylinder

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4853165A (en) * 1984-04-04 1989-08-01 Raychem Corporation Method of using heat-recoverable articles comprising conductive polymer compositions
AU620680B2 (en) * 1984-04-04 1992-02-20 Raychem Corporation Methods of joining polymeric substrates using articles comprising conductive polymers
EP0157640A3 (en) * 1984-04-04 1987-01-14 Raychem Corporation Heat recoverable articles comprising conductive polymer compositions
US5030487A (en) * 1984-04-04 1991-07-09 Raychem Corporation Heat recoverable article comprising conductive polymer compositions
EP0157640A2 (en) * 1984-04-04 1985-10-09 RAYCHEM CORPORATION (a Delaware corporation) Heat recoverable articles comprising conductive polymer compositions
EP0343757A3 (en) * 1984-04-04 1989-12-13 Raychem Corporation (A Delaware Corporation) Heat recoverable artiles comprising conductive polymer compositions
EP0343757A2 (en) * 1984-04-04 1989-11-29 RAYCHEM CORPORATION (a Delaware corporation) Method of joining substrates
US4775501A (en) * 1984-04-04 1988-10-04 Raychem Corp. Heat recoverable article comprising conductive polymer compositions
EP0172039A2 (en) * 1984-08-17 1986-02-19 Raychem Limited Fibre reinforced polymeric article
EP0172039A3 (en) * 1984-08-17 1987-04-22 Raychem Limited Fibre reinforced polymeric article
EP0175554A3 (en) * 1984-09-14 1987-05-13 Raychem Limited Shaped woven fabrics
EP0175554A2 (en) * 1984-09-14 1986-03-26 Raychem Limited Shaped woven fabrics
US4709948A (en) * 1985-08-19 1987-12-01 Raychem Limited Fibre reinforced polymeric article
US4711473A (en) * 1985-09-30 1987-12-08 The Hepworth Iron Company Ltd. Coupling pipes
GB2181201B (en) * 1985-09-30 1989-12-20 Hepworth Iron Co Ltd Coupling pipes
GB2181201A (en) * 1985-09-30 1987-04-15 Hepworth Iron Co Ltd Coupling pipes
US4866252A (en) * 1986-05-06 1989-09-12 Nv Raychem Sa Heat-recoverable article
US4832382A (en) * 1987-02-19 1989-05-23 Raychem Corporation Coupling device
US5169176A (en) * 1989-02-10 1992-12-08 Brossard Robert L Heat shrinkable clamping, connecting, repair, and reinforcing sleeve and method of use
US5141580A (en) * 1989-11-29 1992-08-25 Gaz De France Connection component for together plastic elements by thermal welding
FR2654978A1 (en) * 1989-11-29 1991-05-31 Gaz De France IMPROVED ELECTRIC RESISTANCE TYPE CONNECTION PIECE FOR THERMOSOUDING MEETING OF PLASTIC ELEMENTS.
CN1034483C (en) * 1989-11-29 1997-04-09 法国气体公司 Connection component of type with improved electrical resistor for jointing together plastic elements by thermalwelding
ES2116822A1 (en) * 1994-02-08 1998-07-16 Maceda Pedro Juan Joint for sealing pipes
EP1087171A1 (en) * 1999-08-27 2001-03-28 Star Pipe, AS Dansk Rorindustri Electric welding sleeve and method of making same
GB2470413A (en) * 2009-05-22 2010-11-24 Radius Systems Ltd Pipe coupling
US9669580B2 (en) 2011-11-09 2017-06-06 Saipem S.P.A. Method and apparatus for heating heat-shrinkable pipe sleeves
EP4385900A1 (en) * 2022-12-12 2024-06-19 Hamilton Sundstrand Corporation Wear resistant sleeve for composite cylinder

Also Published As

Publication number Publication date
GB2076489B (en) 1984-05-16

Similar Documents

Publication Publication Date Title
GB2076489A (en) Pipe repair joint
US4135587A (en) Cases for enclosing substrates
US3235289A (en) Butt joints on reinforced plastic pipe and method of forming same
FI64482B (en) VAERMEAOTERHAEMTBAR ANORDNING OCH ANORDNING AV DENSAMMA FOER EN KABELSKARV
US4323607A (en) Heat shrinkable covers
US20130285366A1 (en) Non-crosslinked shrinkable casing member for forming a connection between tubular sections and method of forming said connection by induction fusion
EP0008912B1 (en) Heat shrinkable covers
US4252849A (en) Heat shrinkable covers
US3889047A (en) Sealing and moisture-proofing of electrical joints
US4497760A (en) Cable sheath repair method
CA1321698C (en) Heat recoverable article
GB2057788A (en) Tubular fittings for electric cables and pipelines and method for producing such fittings
US4938820A (en) Joining of sheets
US4292099A (en) Method for environmentally sealing a wire splice
AU2416997A (en) Method and tool for joining, repairs and maintenance of insulating line pipes
JP4377135B2 (en) Temperature sensor
CA1314375C (en) Heat recoverable article
US4441017A (en) Flexible strip heater
US5013894A (en) Conductive polymeric article
JPH01123726A (en) Method of connecting or repairing base material and article
CA1321699C (en) Heat recoverable article
JP2622421B2 (en) Method and apparatus for joining articles using conductive polymers
US20220266504A1 (en) Method of Installing a Heat Shrink Cover, Electrical Heating System, and Installation System
JPS63266790A (en) Concentrated waterproof connection method for numerous circuits
GB2185923A (en) Tube assemblies

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee