Abstract: An anchor assist device for use with a grappling anchor, the grappling anchor including a shank, a plurality of prongs extending outwardly from a lower end of the shank and an inner portion defined by the lower end of the shank and corresponding lower ends of each of the prongs. The anchor assist device including a plate section having a base end and an opposing ground-engaging end. The base end of the plate section is attached to the inner portion of the grappling anchor, such that the plate section is supported by one or more prongs of the grappling anchor, and the ground- engaging end of the plate section extends outwardly from the inner portion of the grappling anchor to provide increased anchor hold capacity within soft anchoring ground.

Abstract: Provided is an anchor for a ship that may facilitate retrieval of the anchor as a folding operation of the anchor is smoothly performed by improving a design of a contact portion such that a mechanical contact resistance of components that perform a folding operation of the anchor is minimized. Consequently, the anchor may be easily retrieved without cutting the wire or the iron chain, that is, without loss of the anchor in a situation in which the anchor arm is caught by an underwater structure not to be pulled out when the ship leaves a harbor after the mooring.

Abstract: An anchor (1) comprises a fluke (2) and a shank (3) pivotally connected to one another. The shank (3) is pivotable between an anchor deployment configuration and an anchor retrieval configuration, and a fastener 36 is provided to engage with the shank 3 to retain the shank (3) in the anchor retrieval configuration.

Abstract: A mooring system for a marine vessel utilizing an extension system. The mooring system comprises at least one mooring line having a first line section and a second line section. An extension device is associated with the at least one mooring line. The extension device has a first component and a second component. The first and second component each has a shear pin hole. A shear pin is positioned within the shear pin holes thereby connecting the first component and the second component. The mooring system also comprises an extension line having a first end connected to the first component and a second end connected to the second component.

Abstract: A drogue attachment consisting of two symmetrical shaped arms is affixed to one end of a shaft, that end of the shaft being attached to a fishing line. The other end of the shaft is tied to a leader, which is in turn tied to a baited or lure-equipped fish hook device. When the fish hook device is pulled through the water by a fish, water opens the shaped arms; when pulled in the other direction by the angler, the arms fold in against the shaft.

Abstract: A take apart anchor has a shank with an eye opening at its upper end adapted for connecting to a shackle and a pivot opening at its lower end adapted for receiving a mechanical fastener for attaching the shank to a stock. The stock has two wings extending away from each other at an angle, the upper surface of the wings including a plurality of bosses, and having an opening through which the lower end of the shank extends. A plurality of fluke plates is connected to the stock by being removably engaged with the plurality of bosses, each fluke plate of the plurality having a base and at least one fluke extending from the base. A plurality of grappling or finger members extends upwardly from the stock and from each individual fluke plate of the plurality of fluke plates, each individual finger member of the plurality being detachably connected by a removable mechanical fastener.

Abstract: An anchor has a shank pivotally connected to a fluke structure via a pivot mount for rotation between locked and release configurations. The shank has a locking surface distal from the pivot mount engaging a portion of the fluke structure to resist the rotation in the locked configuration. An elastically deformable member couples the shank to the pivot mount and the rotation of the shank may require the deformable member to be elastically deformed and the locking surface to be displaced toward the pivot mount. A float may be attached to the shank at a position spaced away from the fluke structure. A pulling force component applied to the shank in a direction from the pivot mount toward the locking surface may provide greater resistance to rotation of the shank. Other anchor embodiments are also disclosed.

Abstract: An anchor for anchoring a vessel to an underwater structure. The anchor includes a shaft and at least three inexpensive flukes each attached to the shaft with a tension adjustable release mechanism. In use at least one of the inexpensive flukes grapple onto a portion of the structure securing the vessel in place. If sufficient tension is applied to the anchor line connecting the anchor to the vessel the release mechanism releases the inexpensive fluke to free the anchor without damage to the underwater structure. In a preferred embodiment each of the release mechanisms includes a spring and a threaded bolt for placing the spring in compression by compressing the spring between the head of the bolt and a first end of a rod into which the bolt is screwed. The rod is contained within a tube. A tab on the inexpensive fluke fits into a slot at the second end of the rod and the tab is trapped in the slot by the inside surface of the tube.

Abstract: A water craft anchor primarily comprising a shank assembly, arm assembly, and housing. The shank assembly swively connects to the arm members at a predetermined location. The arm members having a common shaft fixedly mounted inbetween. The housing assembly is rotably mounted and partially houses the common shaft and a chain member connects the shank assembly to the housing.

Abstract: An anchor having release capabilities including a cylindrical housing having a plurality of equidistantly spaced vertical slots therein. A central post slidably extends through the cylindrical housing. Free ends of the central post have cable eyes disposed thereon. A plurality of pivoting prongs extend inwardly of the plurality of vertical slots of the cylindrical housing for pivotal securement to the central post. A main line has a free end secured to one of the cable eyes of the central post. An opposing free end of the main line is adapted for coupling to a boat. A secondary line has a first end coupled to one of the cable eyes of the central post opposed from the main line. A second end of the secondary monofilament line is secured to the main line. Once ample force is applied, the secondary line will brake thereby releasing the central post. The central post will then slide down causing the prongs to retract within the recesses thereby releasing the anchor from an obstruction.

Abstract: An adjustable anchor comprising a vertical cylinder including a helical spring supported on a puck depending from a vertical rod terminating in an eye projecting above the cylinder. Three anchors 120.degree. apart are pivotally supported by the puck so that upward pull on the eye by a rope will effect progressive retraction of the three anchors into corresponding openings in the cylinder against the resistance of the helical spring. An internally threaded cap of the cylinder screws onto external threads of the cylinder to adjust the tension of the spring.

Abstract: The marine anchor has two symmetrical flukes, each one of them fitted with a pair of symmetrical ledges. Between the flukes, a shank is capable of pivoting around a transverse shaft that joins the two flukes, so as to form, relative to the shaft, a fore arm and a rear arm. The free end of the rear arm carries transverse stop-pins. An oblong aperture is provided in the shank, for the passage of a shaft that joins the flukes. The stop-pins come into abutment against the ledges of the flukes when the shaft is in the rear part of the aperture. The stop-pins are released from the ledges when the shaft is in the fore part of the aperture. The aperture has the general shape of a truncated triangle, the axis of symmetry of which is one and the same with the longitudinal axis of the shank, the long base of the truncated triangle being in the fore. Under normal conditions, elastic or breakable lug pieces limit the movements of the stop-pins when they are released from the ledges.

Abstract: A tubular shank structure the anchor includes an elongate arm control member which moves lengthwise within a main body of the shank structure. Pivotally mounted arm members may be maintained collapsed along side the anchor shank structure or may be operatively held perpendicular to the shank structure by the arm control member. Upward positioning of the arm control member causes same to disengage the arm member ends to permit the arm members to rotate downwardly relative the shank structure so as to disengage an underwater obstruction. An anchor line is secured to the shank structure by a breakaway tie which, in case of anchor fouling, may be ruptured to permit positioning of the arm control member for anchor release.

Abstract: Self-clearing anchor (10) having one or more arms (13) hinged to the stem (11), in the vicinity of the crown (12) of the anchor (10), cooperating with biassing member (17) to counteract the rotation of the arms (13), the arms being adapted, when subjected to a determined stress, to collapse beyond the crown (112) of the anchor (10). In the anchor, the biassing member (17) can be adjusted by appropriate regulation member (19).

Abstract: An anti-fouling anchor for boats, and the like and comprising a shank member having an axially outwardly extending stud member at one end thereof and a transversely extending rod member journalled at the opposite end thereof, a spring urged release rod assembly secured to the transversely extending rod member and releasably engageable with stud member and normally engaged with the stud member for utilization of the anchor in the usual manner for securing the boat in a preselected position in a body of water. Upon accidental lodging of the anchor at the bottom of the body of water, the release rod assembly may be disengaged from the stud member whereby the shank is free to rotation about the longitudinal axis of the transverse rod, thereby permitting the anchor to be "backed away" from the lodged position thereof.

Abstract: An anchor having release capabilities includes a pair of generally planar and spaced-apart flukes joined to a cylindrical tube. A shaft is located intermediate the flukes, the tube passing through the shaft to provide 360.degree. movement between the flukes and shaft. The shaft includes spaced-apart and parallel plates adjacent the tube. A rod is disposed within the tube and a perpendicular trigger is attached thereto, the trigger extending through an opening in the tube. The rod is retained between the plates of the shaft by a replaceable, breakable tie. A locking ring element may be used with the anchor to prevent the release capability. The ring is slidable over the plate portion of the shaft to maintain the rod therebetween. A float may be employed with an anchor to prevent entanglement with obstructions such as the superstructures of submerged vessel. The float is coupled to the anchor shaft by a length of rope, cable, or chain so that the float remains below the water surface.

Abstract: An anchoring apparatus includes a resiliently urged cam assembly. Flukes of the apparatus are automatically set in a sea bed engaging position and are releasable for permitting removal from the sea bed. The flukes are then automatically reset.

Abstract: An anchor device adapted to be buried in a bed of material and including an anchor head comprising a generally hollow cylindrical body having an upper portion adapted to be releasably secured to a hollow placement stem connected to a supply of fluid under pressure. A lower portion of the anchor head has a tapered nose and at least one downwardly oriented jet aperture is provided in the lower end of the nose and a plurality of upwardly-angled jet apertures are provided in the walls of the nose for transmitting fluid into the bed material surrounding the nose to fluidize the material and drive the head into the bed. A fin assembly is mounted on the anchor head intermediate the top and bottom portions and comprises a plurality of fins and a collar and bracket arrangement for mounting a foot portion of each of the fins for rotation between a folded position generally parallel to the axis of the anchor head and an unfolded position at a substantial acute angle to the axis.

Abstract: An anchor with collapsible flukes is provided with a spring tensioned latching mechanism which normally prevents the flukes from moving from a latched position to a collapsed position. The latching mechanism is unlatched and the flukes collapsed by a releasing mechanism including a compression spring and a firing pin. Tension on an anchor line draws the firing pin against the compression spring and, upon a sudden release of the tension in the anchor line, the firing pin is driven against the latching mechanism to unlatch it and permit collapse of the flukes.

Abstract: The anchor flukes are carried on a cross bar having spaced abutment plates which limit pivotal movement of a primary arm which is pivoted on the cross bar. A secondary arm also pivoted on the cross bar at one end does not have anything to limit pivotal movement and has the anchor cable secured at the other end. A pressure releasable latch interconnects the arms so that they release upon engagement of the anchor flukes with an obstruction when the boat is positioned above the anchor thereby allowing the anchor to be raised with its flukes trailing.

Abstract: A boat anchor which includes a hollow shank having a line attachment eye at one end and protruding fins at the other end. Anchor flukes are pivoted to the fins for movement between three positions, namely: an operative position extending generally laterally away from the shank, an anchor-releasing position in which the anchor flukes extend longitudinally of the shank and away from the line attachment eye, and a storage position in which the anchor flukes extend alongside the shank towards the eye; shear pins carried by the fins are broken by the anchor flukes under the application of a predetermined load to permit pivotal movement of the anchor flukes into their anchor-releasing position. A spring-loaded plunger resiliently maintains the anchor flukes in either one of their storage and operative positions. A stop bolt can be adjusted to block the plunger into a position in which it positively locks the flukes in their operative position, whereby anchor-releasing is no longer possible.

Abstract: An anchor incorporating an arrangement for releasing the anchor when it becomes snagged on large rocks or other objects. One embodiment includes a blocking element which is positioned in the elongated anchor body to prevent the anchor arms from moving out of a radially extending position to a position in which they extend longitudinally of the body. The blocking element is spring biased into its blocking position and has a sleeve thereon which is also spring biased to a position wherein the sleeve holds the anchor arms away from the blocking element. A sharp jerk on the anchor line causes the blocking element to move in the elongated anchor body out of blocking position releasing the anchor. Another embodiment includes a blocking element similarly positioned in an elongated anchor body. A striker element is mounted on the anchor body and connected to the anchor line and is spring biased to a position spaced from the blocking element.

Abstract: An anchor having an elongated hollow body with a plurality of flukes pivoted to the lower end thereof. A stem inside the body has an upper end projecting through the upper end of the body connected to an anchor line. A connecting member couples a slideable plug held within the body to the stem for movement between a first position, where the plug holds the flukes in an extended operative position, and a second position, where the flukes are released from engagement with a surface. The connecting member, of which there are two embodiments, includes a spring tensioned as the stem is raised to an elevated position by a pull on the anchor line, the spring biasing the plug to its second position. A holding element locks the stem in its elevated position whereby a release of the pull on the anchor line will cause the spring to move the plug to its second position to release the anchor flukes. In one embodiment, the flukes may be moved to a storage position parallel to the body.

Abstract: A shank-mounted reverse pull slide and slide stop to effect release of a fouled anchor. The device can be readily mounted on a substantially solid, conventional twin fluke anchor shank without altering the structural integrity of the shank. The slide housing has interior wall surfaces which are shaped to provide a shank contact portion and a plurality of passages between the shank surface and the slide housing walls to prevent sand and other marine grit from jamming or restricting movement of the slide along the shank in a marine environment. The slide stop is mounted within the conventional shank line receiving aperture or eye and includes a shear pin receiving channel. When utilized with a shear pin, the slide is locked near the shank free end and cannot move along the shank until the shear pin is severed. Without the shear pin, the slide is moveable between the slide stop and the shank end connected to the crown. The shear pin is easily installed or removed to accommodate either mode of operation.

Abstract: A hollow elongated cylinder has a cup with a central opening at one end and is open at the other. A plurality of equidistantly spaced like slots are cut into the cylinder wall and extend for a short distance in the axial direction from the other end toward the cap. An elongated bar parallel to the axis of the cylinder is secured to the inner wall of the cylinder, one end of the bar being adjacent the cap, the other end of the bar being adjacent the slots. A threaded bolt is aligned with the axis of the cylinder and is disposed therein, the head of the bolt being alignable with the slots, the end of the bolt extending through the opening of the cap. An eye is secured to the exposed end of the bolt. A flat circular disc has a central threaded bore threadedly engaged by said bolt, the disc being disposed in the cylinder and having a diameter slightly smaller than that of the interior of the cylinder. The disc has a portion cut away whereby the disc bears against the bar slidably but non-rotatably.