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7621567 |
Corrugated tube fitting with a ridge sealing device and method
A sealing device and method for sealing a length of tubing with a fitting is provided, where the sealing device includes at least one sealing surface formed with a plurality of ridges. The ridges...
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7614667 |
Pipe connection
An external pipe joint between a pin section ( 30 ) and a box section ( 40 ) is disclosed. The end of the pin and box sections have complementary screw-threaded portions, adapted to interengage...
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7607700 |
Sealing device with ridges for corrugated stainless steel tubing
A sealing device and method for sealing a length of tubing with a fitting, where the sealing device includes at least one sealing surface formed with a plurality of ridges. The sealing device is...
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7600792 |
Flare-shaped end structure for tube
A flared end structure formed by processing an end part of a metal tube which is pressed against a seat formed in a member by tightening a coupling nut to the member. The flared end structure has a...
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7588269 |
Z-shaped thread form for tubular connections
A thread form is shown which is used to make a threaded pipe connection capable of being screwed together and subsequently unscrewed. A pin is provided having external threads with stab flanks and...
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7585002 |
Expandable tubular connection
An expandable tubular pin and box connection is described having a feature of trapping the pin nose after preferably deforming the pin nose plastically in an outward direction away from the...
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7581766 |
Reinforced tubular joint for improved sealing-tightness after plastic expansion
The invention relates to a high-performance threaded tubular joint comprising a first, male tubular element ( 11 ) and a second, female tubular element ( 12 ) made up together by screwing. One of...
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7578043 |
Coupling tubulars
An expandable coupling arrangement for coupling first and second tubulars includes a male thread portion on an end of the first tubular and a female thread portion on an end of the second tubular....
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7575255 |
Wedge thread with high-angle metal seal
A threaded connection includes a pin member providing a single external thread comprising a first external portion and a second external portion, a box member providing a single internal thread...
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7562911 |
Wedge thread with sealing metal
Threaded connections including a pin member and a box member and a sealing metal. The pin member and the box member have wedge threads formed thereon, and the sealing metal is disposed between the...
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7559582 |
Tubing connection arrangement
A tubing connection arrangement and a method used for coupling expandable tubing sections together. In one embodiment, there is disclosed a tubing connection arrangement comprising a first...
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7513534 |
Fatigue-resistant threaded component for a tubular threaded joint
A fatigue-resistant threaded element for a threaded tubular connection. A portion of threads of the threaded element have a helical groove opening into the threaded crest. A groove is formed in all...
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7510219 |
Threaded connection for oil field applications
An interconnection for oil field tubular goods operates in a self sealing manner in response to internal pressures which might otherwise cause leakage through couplings or joints. Each coupling...
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7500698 |
Pseudo two-step connection
A threaded connection includes a pin member including a continuous external wedge thread having a first pin step, a mid pin step, and a second pin step and a box member including a continuous...
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7494159 |
Threaded joint for steel pipes
In a threaded joint for steel pipes which are connected by threaded engagement of a pin member having a tapered male thread, a metal seal-forming portion, and a torque shoulder-forming portion on...
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7478842 |
Coupled connection with an externally supported pin nose seal
A threaded connection includes a first tubular, a second tubular, and a coupling. The first and second tubulars include external threads, a pin nose, a pin nose surface, a pin shoulder surface, and...
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7475917 |
Threaded connection with variable flank angles
A threaded connection for a conduit includes a pin member and a box member. The pin member includes a pin thread having a pin thread crest, a pin thread root, a pin load flank oriented at a pin...
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7470383 |
Submersible pump drop pipe and casing assembly connection and method of manufacture
A submersible pump drop pipe and casing assembly and method of manufacture is disclosed. The drop pipe/casing has a seated connector and base. The seated connector has a first and second cylinder...
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7469938 |
Threaded connection especially for radically plastically expandable conduit
A threaded connection includes a male member having threads thereon defining a load flank lead and a stab flank lead. The threaded connection also includes a female member having threads thereon...
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7467753 |
Connecting tube structure
A connecting tube structure comprises a connecting tube, screw nuts, check valves, and a rotary water-sealing device wherein the connecting tube has a stop plate at one end to mount to a grooved...
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7458616 |
Threads with perturbations
A threaded connection including a pin member and a box member, and methods for manufacturing and forming said threaded connection. The pin member has a pin thread with a pin thread crest, a pin...
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7455331 |
Doubled-up pipe coupling
A multipurpose coupling is made of two pieces incorporating a partitioning washer ring between them. The coupling is provided with a centrally located interlocking, doubled-up mechanical mechanism,...
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7455329 |
Fast make-up fatigue resistant rotary shouldered connection
A thread form having improved strength and fatigue resistance. The root of the thread may be cut on multiple cutting radii having displaced centers. At least two of the root surfaces formed by...
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7452007 |
Hybrid threaded connection for expandable tubulars
An expandable threaded connection between segments of expandable tubulars. The present invention utilizes two complementary thread segments. The first segment of the threaded connection utilizes...
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7434848 |
Threaded tubular connection having interlocking tubular end structures
A tubular connection having a first joint having outer threads and an inner bore, and a second joint having outer threads and an inner bore. The tubular connection further includes an outer nut...
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7434598 |
Integrated piping plate, machining method for same, machining apparatus for same, and machining equipment for same
A machining method for an integrated piping plate, for example, composed of a plurality of plates joined together, and in which an instrument and a component constituting an apparatus, or the...
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7431351 |
Pressure-containing tubular connections for remote operation
This invention is a method and apparatus for making a pressure-containing threaded tubular connection, suitable for remotely operated connection and separation, utilizing electrical heating to...
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7431348 |
Subsurface drill string
A drill string comprises a first drill string member having a male end; and a second drill string member having a female end configured to be joined to the male end of the first drill string...
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7431347 |
Hollow sucker rod connection with second torque shoulder
An elongated drive string assembly comprising a plurality of hollow sucker rods and connecting elements with an axis, connected together and between a drive head located at the surface of an oil...
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7416374 |
Fast make-up fatigue resistant rotary shouldered connection
A thread form having improved strength and fatigue resistance. The root of the thread is cut on multiple cutting radii having displaced centers. At least two of the root surfaces are formed by...
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7390033 |
Screw connection device for connecting the flared ends of two pipes
A screw connection device for connecting the flared ends of two pipes includes a nut, a screw and distance element which comprises a first recess or shape for accommodation of the flare at the end...
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7380840 |
Expandable threaded connection
Tubular connections and methods of designing tubular connections having selected root/crest clearance when the box member and pin member are made-up. When the tubular connection is radially...
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7380839 |
Sealing expandable tubing
Expandable tubing and methods seal a connection between expandable tubulars, and in particular, seal a connection between expandable tubulars post-expansion. In one embodiment, a method includes...
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7360798 |
Threaded joint for steel pipes
A threaded joint for steel pipes comprising a pin 1 and a box 2 each having a contact surface comprising a threaded portion 3 or 4 and an unthreaded metal contact portion 8 is provided...
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7350831 |
End structure of water pipe
A water pipe includes a pipe main body made of a synthetic resin and an annular metal inner piece inserted into an end of the pipe main body. The inner piece has its diameter increased from the...
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7350830 |
Pressure relieved thread connection
Lubricant escape passages are formed in the threads used to connect one tubular body to another. The passages conduct trapped thread lubricant out of the threaded area to prevent the creation of...
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7331614 |
Tubular threaded joint with trapezoid threads having convex bulged thread surface
A threaded tubular connection includes two elements, male and female, made up one into the other to a given torque in which, prior to making up, at least one thread face under contact pressure has...
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7255374 |
Threaded tube joint
A threaded tube joint for oil extraction industry has a trapezoidal thread and a toroidal sealing surface ( 11 ) placed at its end near the thread and engages, for sealing, a corresponding...
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7219933 |
Hollow product, fluid processing system and joining method of hollow members
A connecting portion ( 10 c) of a container ( 10 ) of a catalyst converter is formed with a joining portion ( 15 ) to be joined to a joining portion ( 16 ) of a flange member ( 11 ) by spinning...
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RE39584 |
Pipe joint made of resin
The present invention relates to a pipe joint made of resin used for laying pipes in which a high-purity liquid, ultra pure water or the like flow. According to the pipe joint of the present...
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7178391 |
Insertion tube methods and apparatus
A drill string comprises a first drill string member having a male end; and a second drill string member having a female end configured to be joined to the male end of the first drill string...
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7083203 |
Connecting element for connecting a fuel line to a fuel injector
A connecting element for connecting a fuel line to a fuel injector having a first connecting sleeve, which may be inserted into a receiver opening in the fuel line, and a first sealing element...
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7066499 |
Pipe integral threaded joint
Pipe integral threaded joint formed by a male element ( 1 ) and a female element ( 2 ) respectively placed on the external surface and on the internal surface of two truncated cone-shaped parts of...
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7032933 |
Pipe connecting device
A pipe connecting device designed for detachable, sealing assembly of two pipe ends which device consists of an outer part and an inner part inserted axially into the outer part and cooperating...
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7025360 |
Metal seal with corrosion resistant alloy overlay
A composite metal sealing ring and method are provided for sealing between tubular members. First and second tubular members have first and second conical inner sealing surfaces. A metal sealing...
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7017950 |
Expandable connection
An expandable tubular coupling comprises a threaded male portion and a corresponding threaded female portion, wherein the thread portions feature thread profiles configured such that the coupling...
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7014223 |
Screw threaded joint for continuous-profile tubes
A flush-type integral threaded joint with truncated-cone threads, with two scaling surfaces 11′, 12′, 11″, 12 ″) set at the end of the threaded portions ( 7, 8 ), and with two annular...
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7014212 |
Tubular joint wear indicator
A threaded pipe connection includes a box member, a pin member and a wear indicator for the connection. The pin member has internal threads and the box member has external threads. The internal...
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7007984 |
Hang-free thread design
A threaded pin and box connection having thread geometries and/or dissimilar thread fits that prevent the pin thread of a connection from hanging up in the box thread as the pin is being stabbed...
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7004510 |
Tubing containment system
An embodiment of the invention is a piping system including a fluid impermeable sleeve having a plurality of longitudinal, spaced ribs formed on an interior surface of the sleeve. A fluid carrying...
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