An anchor formed of a hollow tube and pivotally attached wings with fluid pressure in the tube being used to expand the wings outwardly. A ring encircles the hollow tube and is attached to the outside surface of the hollow tube to allow for securement of cables to the anchor.

A self-drilling anchor for use in a friable material comprises a body having an axis, a flanged rear end, a drilling front end and a generally cylindrical portion therebetween having an outer surface with a thread disposed thereon, wherein the body forks, beginning at a predetermined distance from the flanged rear end, into a first leg and a second leg, the first leg extending forwardly into a drilling tip and having a generally rearward facing shoulder angled obtusely outwardly with respect to ...

An anchor having a hollow body, curved sides, and weighted ends. The anchor is attached to an anchor rode by a curved rod extending between the ends on which an anchor rode shackle or thimble may be connected for movement end to end.

An anchor for resisting a pulling force applied to a cable includes an expandable outer shell disposed in an opening in a floor, an outer wedge disposed in the shell and having wedge-shaped projections engaged with the inner wall of the shell, and a rotatable inner wedge below the outer wedge engaged with a short length of chain extending through the shell. A cable to be tensioned is attached to the short length of chain. Tension on the cable urges the inner wedge upwardly against the outer wedg...

A twin-fluke anchor has a shank, a stock, fluke elements mounted upon the stock to pivot as a unit at the inner end of the shank, each element including a fluke surface in a first plane and a rib generally perpendicular to the first plane, the shank disposed between ribs, and a crown including a pair of flat plates having opposed inner surfaces, each plate supported centrally of the flukes and spaced from the flukes plane and sloping upwardly and rearwardly away from the plane to permit bottom m...

An anchor comprises a frame, and two pointed flukes pivotable in relation to the frame to both sides between a storage position substantially in the plane of the frame and an anchoring position. The pivots extend at an angle in relation to each other and to a plane through the main part of the frame. A stop element comprising a cross-member which stiffens the frame and limits the pivoting of each of the flukes in relation to the frame.

An anchor for anchoring floating structures at sea, in particular floating platforms for the production of oil and/or gas. The anchor includes a hollow body (2) which is designed to be submerged in a sea bed by suction or by some other method. The anchor is characterized in that the body is a polygon with concave side surfaces.

The present invention relates to an anchor which may be buried in the seabed by means of the actual mooring line. One embodiment of such an anchor (25) comprises a fluke (1) which has rear eyes (3, 3A), front eyes (2A, 2B) and auxiliary eyes (4A, 4B). Rear mooring cables (9A, 9B) are connected to the rear eyes (3A, 3B) and front mooring cables (8A, 8B) are connected to rear connection points (17A, 17B) located on the front eyes (2A, 2B). Front installation cables (7A, 7B), which are shorter than...

Method for installing an anchor that is released in the sea, especially for installation of in soft seabed sediments. An anchor is rebased in free fall from an at rest position or nearly at rest position and with the longitudinal axis vertical from a position in the water, and that ensures directional stability and nonroutional acceleration during movement towards the seabed. The anchor body (14) has a main member or shank (22) with a regular cross section, especially circular or regular polygon...

An anchor, which is secured in a bore with a mortar, has an anchor member (12) located in the bore, a load application member (11) projecting out of the bore, at least one mixing element (13, 13') for mixing components of the mortar, a drive element (20, 20') provided on the anchor member (12) for setting in motion the at least one mixing element (13, 13'), and a trigger (21) for actuating the drive element (20, 20') which automatically sets in motion the mixing member (15) upon actuation of the...