Pliant anchoring device for use with disposable ballast
BACKGROUND OF THE INVENTION 
     Often, fishermen find it necessary to use one or more anchors when fishing from row boats, or from small boats using outboard motors. Sometimes fishermen troll through a body of water. However, schools of fish tend to remain in generally localized regions that provide secure hiding places and/or adequate food. Obviously, it is advantageous to anchor where the fish are located, rather than trolling over an extensive area. 
     Rocky bottoms provide excellent hiding places for fish and/or for the food they eat. Sometimes these rocky bottoms consist of natural rocks; but often they consist of broken pieces of concrete that have been dumped to provide a breakwater. 
     Conventional anchors often become so firmly caught in rocks, or broken pieces of concrete, that it is impossible to free them, and so it becomes necessary to cut the boat free from the anchor. 
     The cost of replacing conventional anchors that are irretrievably lost in rocky bottoms is a financial burden to fishermen who own their own boats and anchors. 
     However, the problem is more severe in resort areas where a large percentage of the boats are rental boats. Because of the frequent loss of conventional anchors and the high cost of replacement, many who rent boats will not rent anchors with their boats. Then, the cost of owning an anchor, and the burden of transporting it along with all of his fishing gear, is placed on the fisherman. 
     If the fisherman is without his own anchor, loses his own anchor, or is unable to rent an anchor, then he must drift or troll an area that is greater than an area in which he finds fish. Therefore his total catch is reduced, and he loses much of the pleasure of an expensive vacation or outing. 
     FIELD OF THE INVENTION 
     The present invention relates to a device for anchoring small boats. More particularly, the present invention relates to an anchoring device for anchoring small boats by the use of disposable ballast, and dumping the disposable ballast before retrieving the anchoring device. 
     DESCRIPTION OF THE RELATED ART 
     A partial answer to the problem of losing boat anchors in rocky bottoms has been provided by Paradise in U.S. Pat. No. 1,148,924. Paradise teaches the use of an anchoring device that utilizes disposable ballast. A cloth bag is equipped with a drawstring to close the top thereof, disposable ballast, such as rocks, is inserted into the bag prior to the closing thereof, and the anchoring device is utilized for anchoring small boats such as are used for fishermen. 
     The prior art also includes a second anchoring device for use with disposable ballast. This prior art device was advertised in the July 1947 issue of Scientific American. The anchoring device in this advertisement consisted of a mesh net made of sisal rope, and was said to be able to contain twenty-five pounds of stone. 
     While these two prior art anchoring devices provided economical and easily transportable anchors, they did not completely solve the problem of losing the anchors in rocky bottoms. 
     SUMMARY OF THE INVENTION 
     In the present invention, a pliant anchoring device is provided for anchoring boats by the use of disposable ballast. The anchoring device includes a pliant container which is positionable to ballast-retaining and ballast-dumping positions, a first rope that is attached to the pliant container in a location in which a load applied to the first rope is effective to position the pliant container to the ballast-retaining position thereof, and a second rope that is attached to the pliant container in a location in which a force applied to the second rope is effective to position the pliant container to the ballast-dumping position thereof. 
     In a preferred configuration, the pliant container consists of a mesh bag that is made of a flexible cord. 
     It is a primary object of the present invention to provide an anchoring device in which there is a reduced risk of the anchor becoming irretrievably lost in rocky bottoms. 
     It is an object of the present invention to provide an anchoring device that utilizes disposable ballast and that includes means for dumping the disposable ballast before raising the anchoring device. 
     It is an object of the present invention to provide an anchoring device that is economical, low in weight, easily transportable, easily storable, and that utilizes disposable ballast. 
     Other objects of the invention will become obvious from the drawings and detailed description that are included herein. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a side elevation of the anchoring device with the pliant container in the ballast-retaining position, and with a plurality of rocks in the pliant container; and 
     FIG. 2 is a side elevation of the anchoring device with the pliant container in the ballast-dumping position thereof, and with the rocks being discharged from the pliant container. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring now to the drawings, a pliant anchoring device, or foldable anchoring device, 10 includes a ballast anchor 12 which is also referred to herein as a pliant anchor. The ballast anchor 12 includes a pliant receptacle, or pliant container portion, 14 and a pliant extension 16 that is operatively attached to the receptacle 14. The pliant receptacle 14 is also referred to herein as a pliant pouch or net pouch. 
     The pliant extension 16 provides means for spacing a first attaching point, or first location, 18 at a spaced-apart distance 20 from a top opening 22 of the pliant pouch 14. 
     A first rope, or boat-anchoring rope, 24 is attached to the first attaching point 18, and a second rope 26 is attached to a second attaching point, or second location, 28. The second attaching point 28 is located distal from both the first attaching point 18 and the top opening 22 of the pliant pouch 14. 
     Both the pliant pouch 14 and the pliant extension 16 are made of cord 30. The pliant pouch 14 is fabricated by knot-tying the cord 30 with knots 32; so the pliant pouch 14 may be called a knot-tied pouch. The pliant extension 16 consists of a plurality of pliant tension members 34 which are also referred to herein as portions 34 of the cord 30. 
     The pliant anchor 12 includes a plurality of elongated openings, or spaces, 38 which consists of spaces between adjacent ones of the pliant tension members 34. The elongated openings 38 provide means for placing disposable ballast 40 into the pliant anchor 12, and also provide means for dumping ballast 40 from the pliant anchor 12. Since the entire anchor 12, including the tension members 34, is made of pliant material, the elongated openings 38 will widen, or otherwise change their shape, to conform to the individual shape of pieces 42 of ballast 40 being placed into the anchor 12, or being dumped from the anchor 12. 
     Preferably, the pliant pouch 14 and the pliant extension 16 consist of a continuous single strand of the cord 30; and preferably the cord 30 is of a material, such as nylon or polyester, that will not rot or mildew. 
     The first attaching point 18, as shown herein, includes a metal ring 44 that retainably engages first looped strands 46 of the cord 30. The first looped strands 46 include the portions 34 of the cord 30 that form the pliant extension 16; and the second attaching point 28, as shown herein, includes a second metal ring 47 and knotted strands 48 of the cord 30 that form the pliant pouch 14. 
     In use, the pliant anchor 12 is folded, or otherwise collapsed or compressed, and then stored in the fisherman&#39;s tackle box, not shown, not a part of the invention, or in his pocket, or in any other suitable place. 
     The method includes unfolding the pliant anchor 12, attaching the first rope 24 to the first attaching point 18, attaching the second rope 26 to the second attaching point 28, expanding the pliant anchor 12, placing disposable ballast 40, consisting of individual pieces 42 of rock or other heavy and inexpensive material, into the pliant pouch 14 by inserting them through openings 38 between adjacent ones of the pliant tension members 34, flexibly securing the pliant anchor 12 to a boat, not shown, lowering the pliant anchor 12 to a bottom, or bottom surface, 50 below a body of water by applying a tension load to the first rope 24, dumping the ballast 40 from the pliant container 12 by inverting, or partially inverting, the pliant anchor 12 from a ballast-retaining position 54 to a ballast-dumping position, or ballast-releasing position, 56 by means of applying a force to the second rope 26, raising, or retrieving, the pliant anchor 12 subsequent to the dumping step, collapsing the pliant anchor 12, and folding the pliant anchor 12. 
     In summary, the present invention provides an inexpensive and easily storable anchor which uses disposable ballast, and which includes means for dumping the disposable ballast before raising, or retrieving the anchor. 
     The means for dumping the ballast 40 includes the second rope 26 and the ballast-dumping position 56 of the ballast anchor 12. As can be seen in FIG. 2, the ballast anchor 12 can be repositioned to the ballast-dumping position 56 even with the second rope 26 being tensioned generally parallel to the boat-anchoring rope 24. That is, the ballast 40 can be dumped by placing a force on the ballast anchor 12 that is in the same direction as the anchoring load of the boat that is placed on the boat-anchoring rope 24. 
     The present invention provides an anchor which conforms itself to the bottom of a body of water, and which includes diamond-shaped opoenings 58 that provide good anchoring characteristics on mud or sand bottoms, and which includes knots 32 which further increase the anchoring characteristics, particularly on mud or sand bottoms. 
     Conventional anchors are direction sensitive, in that they include gripping features at diametrically opposite locations, whereas the present invention provides equal gripping characteristics for any rotational orientation of the pliant anchor 12. 
     Conventional anchors are rigid, and release of conventional anchors requires a space between rocks that will clear the physical dimensions of the anchor, whereas the ballast 40 of the pliant anchor 12 allows the pliant anchor 12 to change its shape, and/or to dump its ballast, to permit passage through various sizes and shapes of openings. 
     Conventional anchors are direction-sensitive with regard to the release force, whereas the anchoring device 10 of the present invention can be released from any direction, or at the direction that facilitates removal from entrapping material. 
     Finally, conventional anchoring devices are dislodged from anchoring grip of the bottom by placing a tension force on the anchoring rope, whereas the anchoring device 10 of the present invention is dislodged by applying a tension force on a second rope, greatly facilitating dislodging of the anchor from a rocky bottom, particularly if the rocks are broken pieces of concrete. 
     While a specific ballast-dumping position has been illustrated in FIG. 2, it will be realized that actual ballast-dumping positions 56 will vary with variations in such factors as: partially inverting the pliant anchor 12 in accordance with the ratio between the length of the boat-anchoring rope 24 and the depth of the body of water, the material of the bottom surface 50, and/or completely inverting the ballast anchor 12 by lifting it from the bottom surface 50 by the second rope 26. Further, while a specific ballast-retaining position has been illustrated in FIG. 1, it will be realized that actual ballast-retaining positions 54 will vary from suspending the ballast anchor 12 by the first rope 24 to various ratios between the length of the boat-anchoring rope 24 and the depth of the body of water. 
     Therefore, for purposes of interpreting the claims, any position in which the ballast is dumped is a ballast-dumping position 56, and any position in which the ballast is retained is a ballast-retaining position 54. 
     While specific apparatus and method have been disclosed in the preceding description, and while part numbers have been inserted parenthetically into the claims to facilitate understanding of the claims, it should be understood that these specifics have been given for the purpose of disclosing the principles of the present invention and that many variations thereof will become apparent to those who are versed in the art. Therefore, the scope of the present invention is to be determined by the appended claims, and without any limitation by the part numbers inserted parenthetically in the claims. 
     Industrial Applicability 
     The present invention is applicable to anchoring boats, especially small fishing boats, in bodies of water in which the bottom surface is mud, sand, rock, or broken pieces or concrete, and in bodies of water in which anchors are easily lost by entanglement with limbs, broken pieces of concrete, structural steel, or scrap metal.