Hydraulic and earth engineering – Marine structure or fabrication thereof – With anchoring of structure to marine floor
Patent
1982-09-14
1985-02-12
Taylor, Dennis L.
Hydraulic and earth engineering
Marine structure or fabrication thereof
With anchoring of structure to marine floor
405195, 405169, B63B 2150
Patent
active
044988141
ABSTRACT:
A releasable anchor connector for a tension leg platform in which a tether with a bore is locked in a template insert at the seabed by means of a series of locking fingers acting through a ring and a resilient connector. The tether is unlocked by locating a ram that disengages the fingers at the end of the bore and applying hydraulic pressure to the ram by means of a hose passed down the bore and a delivery head at the end of the hose. The delivery head comprises a hollow body, a piston slidable in the body and a valve member slidably mounted on the piston. A spring urges the valve member to engage a valve seat and a spring urges the piston forwards. Hydraulic pressure of the fluid in the hose forces the piston back so that a split collet moves back with the piston and expands to hold the delivery head in the position behind a shoulder formed in a bore leading to the ram, after which the piston lifts the valve member off its seat, so transmitting the hydraulic pressure to the ram. The springs close the valve as the hydraulic pressure is released.
REFERENCES:
patent: 2178844 (1939-11-01), Baker
patent: 2671512 (1954-03-01), Ragan et al.
patent: 3163228 (1964-12-01), Hayes
patent: 3189099 (1965-06-01), Ottemann et al.
patent: 3199906 (1965-08-01), Chenoweth
patent: 3536344 (1970-10-01), Nelson
patent: 4354446 (1982-10-01), Goldsmith et al.
Taylor Dennis L.
Vickers PLC of Vickers House
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