An anchor has a fluke (3) having an underside (2) lying in one flat geometrical plane and comprising two fluke parts (5, 6) which each have a forwardly pointed tip (7, 8) on either side of the central plane (9) of symmetry which is perpendicular to the geometrical plane (2) of the underside. These two fluke parts (5, 6) form an integral unit at the central plane (9) and have their front edges (10, 11, 12, 13) in that geometrical plane (2) tapering towards the respective tips (7, 8) and from each tip (7, 8) extend rearwardly with a cross section in each plane perpendicular to the underside plane (2) and perpendicular to the plane (9) of symmetry. That unit is substantially triangular up to and beyond the point where the inner front edges (11, 12) of the fluke parts (5, 6) meet, which triangular cross sections (10, 11, 12, 13) have their apex (22, 23) according to a straight ridge line which from each tip (7, 8) extends rearwardly at a sharp angle (.alpha.) with the underside plane (2). The triangular cross sections merge into each other at the central plane of symmetry. The fluke (3) has adjustably connected therewith a shank (14) which by a transfer pin (15) and a spaced-apart adjustable point of connection (16) can be placed at a predetermined sharp angle with respect to the plane (2) of the underside. The entire fluke (3) has a box-like structure in that the plane (2) at the underside is formed by a flat plate (2).
The present invention provides a marine anchor that provides a high holding power and allows faster, smoother and more controlled penetration of the anchor in various soil types. The invention includes an anchor with a shank having two, rearwardly diverging legs that are coupled to the top surface of the fluke along two rearwardly diverging lines so that the plate-like legs define a soil passage that diverges rearwardly within all planes that are parallel to the surface of the fluke between the legs. The fluke preferably includes two primary fluke points disposed on either side a central fluke axis and a third fluke point disposed along the central fluke axis to break up the soil passing over the fluke and between the shank legs. The fluke also incorporates a forwardly tapering profile with a ridge aligned with each fluke point, wherein the fluke is also tapered between each ridge so that the side-to-side cross-section of the fluke has multiple hills and valleys therein. It is preferred that the fluke further include a back edge that is rearwardly tapering.
6148758 - Boat anchor - Owned by Electromechanical Research Laboratories, Inc. (New Albany, IN)
An anchor for a marine vessel has a shank pivotally connected to a fluke allowing pivotal movement therebetween about a pivot axis within a range of motion. The anchor also has a pivot control member engageable between the shank and the fluke to regulate the pivotal movement throughout at least a portion of the range of motion. The pivot control member is elastically deformed as the shank is pivoted relative to the fluke. The anchor has an operational position in which the point of connection of an anchor line to the shank is positioned below a horizontal plane containing the pivot axis.
Anchor comprising a fluke and a shank which at a first end is attached to the fluke and a second end that is situated opposite to the first end, is provided with means for attachments of the anchor to a penetration line or anchor line, in which the shank comprises two shank legs, which at the second end are connected to each other using a pin, in which the portion of the pin situated within the shank legs also serves as connection means for an end link or end shackle of the penetration line or anchor line.
Anchor comprising a fluke and a shank which at a first end is attached to the fluke and a second end that is situated opposite to the first end, is provided with means for attachments of the anchor to a penetration line or anchor line, in which the shank comprises two shank legs, which at the second end are connected to each other using a pin, in which the portion of the pin situated within the shank legs also serves as connection means for an end link or end shackle of the penetration line or anchor line.
A plate-type anchor includes a flat sheet forming a central portion of substantially rectangular shape, provided with lateral flanges with a certain inclination with respect to the plane of the principal sheet, a flange corresponding to the front part of the anchor being of pointed shape while the flange corresponding to the tail of the anchor has a cut-out to allow fitting of a device to be used when it is launched. On its upper face, the anchor is provided with two longitudinally hollowed-out lugs which are mutually parallel and fastened perpendicularly to the face of the flat sheet, and to which the chain cables or mooring cables of the anchor are attached. On the lower face are fastened two longitudinal bars perpendicular to the plane of the face, but forming an acute angle towards the front part of the anchor. The anchor is installed in the sea bed with the aid of a device in the form of a pile, provided, at its lower end, with a device for fastening the anchor, the pile/anchor assembly being launched from a vessel and reaching the sea bed through the action of its own weight.
