Joints and connections – Flexibly connected rigid members – Helical spring type coupling
Patent
1996-10-17
1998-06-23
Kim, Harry C.
Joints and connections
Flexibly connected rigid members
Helical spring type coupling
403220, 175 73, F16D 300, E21B 708
Patent
active
057695580
ABSTRACT:
A flex joint is disclosed for connecting two cylindrical instrument housings of a downhole instrument assembly that will bend as required to allow the instrument housings to move through a curved section of a well bore. The joint includes spaced tubular connectors for connecting the joint to the cylindrical housings. The connectors are connected by a flexible cable or thin walled cylindrical tube. One or more helical springs extend between the connectors and are held in compression to urge the connectors toward an in-line position while allowing the joint to bend as required for the cylindrical instrument housings to travel through a curved section of a well bore.
REFERENCES:
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patent: 2477827 (1949-08-01), Robinson
patent: 2546026 (1951-03-01), Coon
patent: 2558763 (1951-07-01), Lee
patent: 3879024 (1975-04-01), Scott et al.
patent: 5050682 (1991-09-01), Huber et al.
patent: 5297641 (1994-03-01), Falgout, Sr.
patent: 5314032 (1994-05-01), Pringle et al.
patent: 5450914 (1995-09-01), Coram
Kim Harry C.
Radius Metier, Inc.
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