A marine anchor including a main fluke with a shank attached to the fluke. To enable the anchor to orientate on the sea bed from an inverted position to an upright working position, auxiliary flukes are supported by respective lugs upstanding from the fluke on either side of the anchor's vertical plane of symmetry. The auxiliary flukes extend laterally from the lugs and are inclined at an acute angle to the main fluke. The anchor includes support means arranged such that when the anchor lies inv...

The present invention relates in one aspect to an anchor comprising a shank portion and a stock portion, the stock portion extending through a first aperture in the shank portion and extending laterally of the shank portion when in use, but being demountable so as to be removable from the first aperture in the shank entirely or so as to be moveable in the first aperture to a position where it can be orientated substantially in alignment with the shank, wherein the stock is fitted with a keeper w...

An anchor for boats comprises a hollow body having an outer shell of molded resinous plastic material. The body includes an integral stem having a lower end integrally joined to a ballast chamber elongated to extend transversely of the stem in opposite directions. A pair of claws are integrally formed to project transversely outwardly of the ballast chamber and transversely of the stem axis for engagement with a supporting bottom surface under water. The outer shell is designed to withstand load...

An anchor for fastening in bore holes comprises an expander body driven into an expansion sleeve, having a slotted expansible portion, by a stay bolt to which a torque is applied to draw the expander body into the expansion sleeve. The expander body has at its trailing end a conical portion which merges into a concavely-curved portion. The angle of the concavity of the curved portion at the leading end of the expander body corresponds to a double angle of inclination of the conical portion to th...

An anchor comprises an anchor shaft member and an anchor body member in the form of a plate having two blades which are joined to the anchor shaft member by a pivotal connection which allows the blades to lie normally within a range of angles to the plane containing the anchor shaft and the pivot axis. This range of angles is determined by the interconnection between two lugs on the anchor body member projecting away from the pivot axis on the opposite side from the main plate constituting the a...

An anchor having a V-shaped twin shank with its legs composed of flat shapes in planes substantially parallel to the fluke so that the soil moves as through a tunnel for sliding penetration which is kept in a straight course due to stabilizer ear plates at a forwardly opening angle at the rear corners of the fluke.

An anchor comprises a shank and a pair of flukes with pointed ends. The flukes are pivotally mounted to a lower portion of the shank so the flukes extend upwardly from the pivot along opposite sides of the shank. The flukes pivot as a unit about an axis through the lower portion of the shank. A counterweight, preferably in the form of a solid metal block, is secured adjacent the bottom of the flukes to pivot with the flukes. The counterweight is mounted on a side of the pivot axis opposite the f...

Anchor for connecting or attaching a buoyant device that exerts an upward force on an anchor. The anchor comprises a base body which is positioned on the bottom and is maintained in that position by its own weight and/or auxiliary means, which base body has guiding elements for a second body to which that upward force is applied. The coupling between both bodies comprises a chamber bounded by both bodies which chamber can be connected to a source of underpressure.

An anchor with a U-shaped shank welded to a base on which are pivoted two symmetrical pointed flukes, each having an upwardly extending flange along one edge and a downwardly extending flange along the opposite edge with the flukes arranged so that no matter in which direction the anchor acts, there are always two flanges which extend downward and dig into the bottom and two flanges which extend upward. In the stored position, a rope link slidable on the shank straddles the pointed ends of the f...

An anchor is used for anchoring a hull or a floating body on the water. When the anchor of the present invention is made to land on the bottom of the water, left and right bills and a lower auxiliary bill encroach the bottom of the water and thus to make anchoring positive, and as a shank, bills and a bill stopping frame are relatively thin, said anchor is lighter than the conventional anchors. Consequently the resistance of the sediment in the bottom of the water is minimized with respect to th...