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Pipe Joints Or Couplings > Particular Interface > Tapered > Discontinuous Interface Surface > Threaded (e.g., Drill Pipe Type) > Flat Crest

Flat Crest

Flat Crest patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

05/29/14 - 20140145433 - Tubular connection with helically extending torque shoulder
A tubular connection includes a pin member and a box member. The pin member has a first thread structure and a helical torque shoulder spaced axially along the pin member from the first thread structure. The box member has a second thread structure and a second helical torque shoulder spaced...

03/27/14 - 20140084582 - Tubular threaded connection
A threaded tubular connection includes a first tube and a second tube. The first tube includes a pin member and the second tube includes a box member. A cross-sectional area of a pin critical cross-section is within approximately ±5% of cross-sectional area of a box critical cross-section of the box...

05/16/13 - 20130119657 - Threaded pipe connector
A threaded pipe connector, including: a pipe body including an external thread on one end; and a coupling including an internal thread on a corresponding end. Both the external thread and the internal thread are buttress threads capable of matching with each other. A ratio of thread height to pitch...

01/17/13 - 20130015657 - Tubular threaded connection
A threaded tubular connection including a first tube and a second tube is provided. The first tube includes a pin member which extends from an end of a main body of the first tube to a terminal end of the first tube. The second tube includes a box member which...

11/15/12 - 20120286507 - Threaded connection
A threaded connection used in exploration and operation of hydrocarbon wells includes first and second tubular components, including respective male and female ends and threaded zones. The threaded zones include respective male and female threads, the threads including a root, a crest, a stabbing flank, and a load flank. A...

03/29/12 - 20120074693 - Step-to-step wedge thread connections and related methods
A threaded connection includes a pin member comprising a first pin step and a second pin step, and pin wedge threads disposed on each of the first and second pin steps and a box member comprising a first box step and a second box step, and box wedge threads disposed...

03/22/12 - 20120068458 - Threated connection for drilling and operating hydrocarbon wells
A set for manufacturing a threaded connection, including first and second tubular components with an axis of revolution, one of their ends including a threaded zone formed on the external or internal peripheral surface of the component depending on whether the threaded end is of male or female type, the...

06/30/11 - 20110156385 - Pipe connection
The invention relates to a pipe connection, particularly a gas-tight pipe screw connection, wherein the parts in the connecting region are connected by means of joining according to DIN 8593 by way of contact-pressing and insert-pressing, comprising an inner pipe part (I) and an outer pipe part (A), or two...

05/19/11 - 20110115218 - Drill stem tubular connection with internal stiffener ring
A threaded pipe coupling is shown for a drill pipe used in horizontal boring operations utilizing a special form of a threaded connection with an internal stiffener ring which eliminates the need for hot forging operations. The pipe coupling is used for joining an upset region of a first tubular...

04/14/11 - 20110084483 - Tubular joint having wedge threads with surface coating
A threaded joint for pipes includes a pin member and a box member, the pin member having an external thread configured to correspond to an internal thread of the box member, a thread form of the internal and external threads having generally dovetail-shaped profile with stab flanks and load flanks...

01/20/11 - 20110012349 - Arrow-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 member has external threads with stab flanks and load flanks and flat crests and roots for mating with the mating internal threads of a box member...

07/22/10 - 20100181762 - Super 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 a positive and very low load flank angle,...

07/22/10 - 20100181763 - Wedge thread with torque shoulder
A threaded pipe connection includes a pin member having an external thread increasing in width in one direction, a box member having an internal thread increasing in width in an opposite direction so that complementary internal and external threads move into engagement upon make-up of the connection, and at least...

07/08/10 - 20100171306 - Threaded element of a component with opposed threading portions and corresponding tubular threaded connection
A threaded element of a component includes at least first and second threading portions each including threads each including a stabbing flank and a loading flank. The stabbing flanks and loading flanks of the threads of the first threading portion and the threads of the second threading portion are inclined...

06/24/10 - 20100156099 - Threads 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,...

05/20/10 - 20100123311 - Cylindrical tapered thread form for tubular connections
A thread form is shown which is used to make a threaded connection between two tubular members and which is capable of being screwed together and subsequently unscrewed. A pin member is provided having external threads with stab flanks and load flanks and flat crests and roots for mating with...

04/29/10 - 20100102553 - Threaded tubular connection which is leak-proof under internal and external successive pressure loads
A threaded tubular connection that is leak-proof for internal and external successive pressure loads including a male element and a female element. At least one of the male or female elements includes a lip between the threading and the free end of the element. The lip includes a first zone...

04/01/10 - 20100078936 - Threaded joint for steel pipes
A threaded joint for steel pipes constituted by a pin having male threads and a box having female threads is improved with respect to ease of insertion of the pin and galling resistance of the threaded portions. The stabbing flanks of the threads in a complete thread portion of one...

08/13/09 - 20090200798 - Tubular threaded joint
A tubular threaded joint which has excellent resistance to compression and which permits easy tightening operation in the field in a vertical state comprises a pin having a male threaded zone and a box having a female threaded zone. The pin or the box has an end shoulder surface on...

03/05/09 - 20090058085 - Oilfield tubular connection with increased compression capacity
A threaded oilfield tubular connection 10 includes a pin member 12 having a first external tapered thread 24 and a second external tapered thread 26. A box member includes a first internal tapered thread 14 and a second internal tapered thread 16. Helical torque shoulders 40, 42 are provided on...

02/19/09 - 20090045623 - Connector part for connecting a material supply device to a spray gun
A connector part (3) for connecting a material supply device (10) to a spray gun (20) that includes a hollow cylindrical connection piece (5); a threaded wedge element (8) with a lower starting point (8a) and an upper end (8b) running around the outer circumference of connection piece (5) and...