Self-elevating offshore drilling unit legs

Details Self-elevating offshore drilling unit legs Self-elevating offshore drilling unit legs

1974-07-11

1976-07-06

Shapiro, Jacob

Implements or apparatus for applying pushing or pulling force

Device or member for contacting and guiding moving cable

Including rotatable, cable contacting, pulley wheel element

61 53, 52731, 74 29, 254106, E02B 1700, F16H 1904

Patent

active

039674576

ABSTRACT:
Leg apparatus for an offshore drilling unit of the self-elevating type having a floatable hull and a plurality of legs movable from a raised position, in which the legs are supported by the hull in a body of water, to a lowered position, in which the hull is supported by the legs on the floor of the body of water. The legs may comprise a plurality of mutually parallel tubular chord members rigidly interconnected by structural bracing members. The tubular chord members may comprise an elongated tubular body and an elongated plate member, whose longitudinal axis coincides with the axis of the tubular body, rigidly connected to and spanning the interior of the tubular body.

REFERENCES:
patent: 2578364 (1951-12-01), Maxon, Jr.
patent: 3183676 (1965-05-01), Le Tourneau
patent: 3372907 (1968-03-01), Smulders et al.
patent: 3445129 (1969-05-01), Penote
patent: 3779656 (1973-12-01), Guy et al.

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