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Class 285/333 - Threaded (e.g., drill pipe type)


Subclass of Class 285 - Pipe joints or couplings
Definition: Subject matter comprising a threaded portion generally on
No. of patents: 362
Last issue date: 05/29/2012


1                    
NumberTitleIssue Date
8186722Super high torque dope-free threaded joint
A high torque threaded joint comprising a box member having threads and a pin member having threads (10) configured and positioned to mate with the threads of the box member. There is a flank-to-flank contact thread profile using trapezoidal threads with both...
05/29/2012
8146959Fatigue resistant pipe string component
A pipe string component that connects an offshore platform with a sea bed is provided. The pipe string component includes a threaded tubular connection. The threaded tubular connection includes a male tubular element including a tapered male threading, and a female ...
04/03/2012
8091930Tubular connection floating shoulder ring
A floating shoulder ring is arranged to occupy the J-space between pin ends of coupled pipe sections. The length of the ring is arranged to allow the pipe connection to approach the specified torque for shoulderless connections before the ring begins to function as ...
01/10/2012
8075023Coupling for drilling-with-casing operations
A threaded casing connection for use in drilling-with-casing operations includes an integral, sacrificial wear sleeve on the downhole end of the coupling which has additional wear protection on portions of its outer wall and leading face. ...
12/13/2011
8052176Connection apparatus and method
A connection apparatus is adapted to allow connection of one substantially tubular member to another substantially tubular member. The connection apparatus includes a male connecting member and a female connecting member. Cooperating attachment mechanisms are provid...
11/08/2011
8042841Connection element for producing a fluid-tight screw connection, and method for the production thereof
A connection element for producing a fluid-tight screw connection of a line, having a thread includes a thread groove, delimited by a thread base and neighboring thread flanks, a sealant situated in the thread groove at least over one complete revolution of the thre...
10/25/2011
8038179Threaded joint for steel pipes
A threaded joint for steel pipes comprising a pin 1 having a tapered male thread 11, a tapered sealing surface 13, and an end shoulder surface 14 and a box 2 having correspondingly a tapered female thread 21, a tapered seali...
10/18/2011
8029025Single taper wedge thread connection with mid-seal
A tubular connection includes a pin member and box member. The pin member includes a pin thread formed on a small step and a large step and a first seal surface formed between the small step and the large step. The box member includes a box thread formed on a small ...
10/04/2011
7997627Threaded joint for steel pipes
A threaded joint for steel pipes comprises a pin (1) and a box (2). The pin has male thread (11), a sealing surface (13), and a shoulder surface (14) located on the end face of the pin. Correspondingly, the box has female thread (
08/16/2011
7942454Threads with perturbations
A threaded connection includes a pin member including a pin thread having a pin thread crest, a pin thread root, a pin load flank, and a pin stab flank, and a box member including a box thread having a box thread crest, a box thread root, a box load flank, and a box...
05/17/2011
7887103Energizing seal for expandable connections
A tubular configured to mate with a second tubular so that sealing integrity is maintained between the tubulars before, during, and after expansion of the tubulars is disclosed. In one embodiment, a connector for connecting tubulars is provided. The connector includ...
02/15/2011
7883120Male element for a sealed threaded tubular connection
A male element for a sealed threaded tubular connection. Before tapered reduction swaging of an end region of a tube and machining in the region of a tapered male threading and a male lip to obtain a male tubular element for makeup into a female tubular element to f...
02/08/2011
7845687Resistance to fatigue of a threaded tubular connection
A method to improve fatigue resistance of a threaded tubular connection. Radial interference between a male and female threading operates between stabbing flanks inclined at about 27° with respect to an axis of the threadings, wherein mutual contacting surfaces are...
12/07/2010
7828337Threaded connection with wedge segments
A threaded connection includes a pin member having a pin thread having a pin load flank and a pin stab flank. The threaded connection includes a box member having a box thread having a box load flank and a box stab flank. The pin thread includes a first wedge segmen...
11/09/2010
7798534Electrical conduit union and conduit system
An electrical conduit piece of the invention has two external threaded regions, one threaded region having a left hand threaded region and one having a right hand threaded region. This conduit piece is particularly well adapted to be used in conventional conduit sys...
09/21/2010
7753416High-strength threaded joints, particularly for lined tubes
A threaded tubular joint comprising male and female members is provided. The ends of the male members comprise an upper portion and a lower portion located between an upper threaded portion and an inner surface of each of the male ends. The upper portion is formed b...
07/13/2010
7735879Sucker rod connection with improved fatigue resistance, formed by applying diametrical interference to reduce axial interference
A sucker rod connection is disclosed. The sucker rod connection comprises a tapered male member including a plurality of trapezoidal threads, and, a tapered female member also including a plurality of trapezoidal threads, in which the male member is capable of being...
06/15/2010
7661727Threaded tubular connection which is resistant to bending stresses
A threaded tubular connection includes a male tubular element including a male threaded portion and a female tubular element including a female threaded portion that cooperates by screwing with the male threaded portion. The threaded connection includes at least one...
02/16/2010
7585002Expandable 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 longitudinal axis of the connection. The box end is held away from the pin w...
09/08/2009
7575255Wedge 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 comprising a first internal portion and a second internal portion, and a...
08/18/2009
7559582Tubing 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 expandable tubing section defining a male portion; a second expandable tubing...
07/14/2009
7510219Threaded 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 sleeve includes an interior fulcrum ring fitted between the nose ends of...
03/31/2009
7506900Threaded joint for pipes provided with seal
A threaded joint for pipes comprising at least one seal of the metal-metal interference type arranged externally to the female thread. The joint has an extension of the box beyond the seal which produces an elastic tightening band effect on the seal so that excessiv...
03/24/2009
7500698Pseudo 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 internal wedge thread having a first box step, a mid box step, and a secon...
03/10/2009
7497481Treating method and design method for tubular connections
A method of treating a threaded connection that includes determining a treating time sufficient to form a thickness of a hopeite coating, coating at least a portion of the threaded connection with phosphating compound for a period of time sufficient to form the thic...
03/03/2009
7478842Coupled 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 a pin seal surface located between the pin nose and pin shoulder sur...
01/20/2009
7458616Threads 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 thread root, a pin load flank, and a pin stab flank. The box member has ...
12/02/2008
7455329Fast 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 cutting radii may have lengths that are greater than the root truncation....
11/25/2008
7452007Hybrid 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 standard box and pin threads. In the second segment of the threaded con...
11/18/2008
7438329Methods and connections for coupled pipe
A threaded and coupled connector with tapered threads having equivalent heights (same height on pin and box threads), negative load flanks, biased tapered thread forms with a torque shoulder formed by pin noses that abut at a central point within a coupling construc...
10/21/2008
7434848Threaded 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 having inner threads that cooperate with the outer threads of the first ...
10/14/2008
7431347Hollow 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 well and a rotary pump located deep down hole in an oil well. Each holl...
10/07/2008
7425024Submersible 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 sections, the first section being used to align and direct the base into the se...
09/16/2008
7387319Coupling for anchor bolts
A coupling for anchor bolts, includes a sleeve having an internal screw thread and two anchor pipes having an external screw thread, the ends of the pipes being screwed into the sleeve. The sleeve is provided with an annular rib in the longitudinal centre thereof, t...
06/17/2008
7384075Threaded joint for gas turbine components
An assembly including inner and outer overlapping annular elements with interengaging threads. An axial abutment between the two elements is spaced from the threaded section to permit a structural and fluid seal at the joint. Pilot joints are provided to stabilize t...
06/10/2008
7380839Sealing 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 sealing a connection between expandable tubulars in the form of section...
06/03/2008
7364203Reinforcement for arched type structure with beveled screwed ends
An electrical isolation connector subassembly for interconnecting adjacent tubular drill rods of a drilling system used in drilling bore holes in earth formations, the connector comprising an electrically insulative sleeve being sandwiched between two electrically i...
04/29/2008
7360798Threaded 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 with improved anti-galling propertied by formi...
04/22/2008
7361411Hardfacing alloy, methods, and products
Disclosed is a hardfacing alloy capable of withstanding service abrasion of the order of silicious earth particles and weldable on industrial products, such as tool joints and stabilizers used in oil and gas well drilling, and other industrial products. The hardfaci...
04/22/2008
7360796Electrical isolation connector subassembly for use in directional drilling
An electrical isolation connector subassembly for interconnecting adjacent tubular drill rods of a drilling system used in drilling bore holes in earth formations, the connector comprising an electrically insulative sleeve being sandwiched between two electrically i...
04/22/2008
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