Ships – Anchor – With dislodgement means
Patent
1984-11-28
1986-11-04
Barefoot, Galen L.
Ships
Anchor
With dislodgement means
114294, 114230, 405224, 294 8625, B63B 2126, F16B 104, F16D 300
Patent
active
RE0322741
ABSTRACT:
A marine tether anchoring device comprises an anchor body and a segmented spring collet that moves axially relative to the anchor body. As the anchor body moves downwardly relative to the collet the upper end of the collet is expanded by a wedge structure which is attached to the anchor body and lockingly engages the wall of an anchoring chamber. The lower end of the tether line is attached to the wedge structure and cannot escape from the anchoring chamber. Release is effected by slackening the tension on the tether line and supplying fluid to a piston supported in the anchor body so that the piston forces the collet downwardly and releases the segments of the spring collet from the face of the wedge structure. Retraction of the collet is completed by a cam ring that engages faces on the collet as final downward travel of the collet takes place.
REFERENCES:
patent: 3199906 (1965-08-01), Chenoweth
patent: 3429286 (1969-02-01), Alghisi
patent: 3560032 (1971-02-01), Cohen et al.
patent: 3638988 (1972-02-01), Brown
patent: 3999605 (1976-12-01), Broddick
patent: 4347012 (1982-08-01), Glidden
patent: 4432670 (1984-02-01), Lawson
patent: 4439055 (1984-03-01), Quigg et al.
patent: 4459933 (1984-07-01), Burchett
UK Patent App. #2035240A, 6/18/1980, Barrett et al.
Barefoot Galen L.
Swinehart Edwin L.
Vickers Public Limited Company
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