Pipe joints or couplings – For branched path – T-type
Patent
1993-07-30
1995-06-13
Neuder, William P.
Pipe joints or couplings
For branched path
T-type
166367, F16L 3900
Patent
active
054235758
ABSTRACT:
A concentric riser joint comprising inner and outer tubular assemblies each having a longitudinal bore therethrough. An annular space is formed between the inner and outer tubular assemblies. The outer tubular assembly comprises a tubular element having a pin end coupling connected to a first end and a box end coupling connected to a second end of the tubular element. A cylindrical retainer plate is received in the pin end coupling. The cylindrical retainer plate has an inner bore for receiving the inner tubular assembly therethrough. The retainer plate further includes a plurality of longitudinal bores extending therethrough. A seal sub is connected to one end of the inner tubular assembly. The seal sub is partially received in the box end coupling and includes a plurality of longitudinal passageways extending therethrough. A threaded nut connects the outer tubular assembly to an adjoining concentric riser joint. The box end coupling and the pin end coupling each have a mating end surface with a longitudinal blind bore therein such that the plurality of longitudinal passageways and the plurality of longitudinal bores are in axial alignment when the longitudinal blind bores are axially aligned. An alignment pin is fixedly received in one of the longitudinal blind bores. The alignment pin axially aligns the plurality of longitudinal passageways of the riser joint with the plurality of longitudinal bores of an adjoining riser joint.
REFERENCES:
patent: 4067596 (1978-01-01), Kellner et al.
patent: 4176863 (1979-12-01), Wetmore
patent: 4274663 (1981-06-01), Beiker et al.
patent: 5060987 (1991-10-01), Miller
Drawing of Concentric Riser Coupling taken from a promotional brochure of Hughes Offshore, undated but at least as early as 1987.
Neuder William P.
Sonsub Inc.
LandOfFree
Concentric riser joint with self-aligning coupling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Concentric riser joint with self-aligning coupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Concentric riser joint with self-aligning coupling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1304985