Riser tensioner sensor assembly

Details Riser tensioner sensor assembly Riser tensioner sensor assembly

2005-03-22

2005-03-22

Lagman, Frederick L. (Department: 3673)

Hydraulic and earth engineering

Marine structure or fabrication thereof

With anchoring of structure to marine floor

C405S195100, C405S224200

Reexamination Certificate

active

06869254

ABSTRACT:
An apparatus for providing an indication of relative movement between sheave assemblies of a riser tensioner that has a sensor target connectable to one of the sheave assemblies, a senor tube cooperative with said sensor target and suitable for interconnection to the other of the sheave assemblies, a metallic member positioned within the sensor tube and suspended by the sensor target, and a an ultrasonic sensor cooperative with the sensor tube so as to sense a distance that the metallic member moves within the sensor tube in relation to relative movement between the sensor target and the sensor tube.

REFERENCES:
patent: 4317174 (1982-02-01), Dean
patent: 4883387 (1989-11-01), Myers et al.
patent: 5628586 (1997-05-01), Arlt, III
patent: 5658095 (1997-08-01), Arlt et al.
patent: 5846028 (1998-12-01), Thory
patent: 6296232 (2001-10-01), Roodenburg
patent: 6585455 (2003-07-01), Petersen et al.
patent: 6748809 (2004-06-01), Hanna et al.

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