Patent Publication Number: US-2010107469-A1

Title: Noise-emitting lure

Description:
FIELD OF THE INVENTION 
     The present invention relates to the field of fishing lures, and more particularly to noise-emitting lure which may be used in combination with a limitless variety of jigs, spinners, blades, hooks, and other fishing tackle and which, when activated, may emit discrete sound waves at frequencies known to attract fish within range of their sensation. 
     BACKGROUND OF THE INVENTION 
     Noise-emitting lures used to attract fish are known in the fishing industry. A wide variety of both analog and digital noise-emitting lures are currently available. Some noise-emitting lures come pre-assembled with hooks, blades, jigs, spinners or other fishing tackle. A pre-assembled lure having fixed components, however, is not always optimal, especially if a fisher prefers to use particular tackle arrangements for different fishing conditions such as location, weather, visibility, or water temperature, for example. 
     One of the more well-known conventionally available noise-emitting lures is a rattle lure such as the RAT-L-TRAP. Rattle lures are typically fish-shaped lures that are designed to undulate as they are pulled through the water. The undulating motion activates an internal mechanism that causes the lure to emit a fish-attractive rattle. This kind of lure generally includes a number of eye-loops on the underside and/or back end for attaching hooks, and also typically includes an eye loop on the top side (if the lure is a floating type lure) or lip (if the lure is a deep-water diving type lure) for attaching a fishing line. Because there are multiple sets of hooks which are in close proximity to each other and to the line, one problem with this kind of lure is that the hooks continually become caught in each other or caught on the line. In either situation, entanglement of the hooks or any other condition that interferes with the undulating motion disables the sound emission of the lure. Consequently, the lure must be retrieved, disentangled, and re-cast in order to achieve proper sound performance. Failed casts absorb user energy, result in lost fishing time, and can be incredibly frustrating regardless of whether fishing is engaged in for leisurely purposes or as a competitive endeavor. 
     With regard to electronic versions of noise-emitting lures, there is always the possibility of malfunction. In electronic lures which depend upon a self contained, limited capacity energy source to emit sound, failure of the power source is inevitable. Where the noise-emitting component of an electronic lure is completely enclosed, there may be no means of access for repair or power source replacement should any of the electronic elements malfunction. For lures in which access to the noise-emitting element is an option, the issue becomes one of frequent battery changes. Further, even where the noise emitting element of an electronic lure is accessible, there is a possibility that water leakage will occur and will cause irreversible damage to the electronic components. 
     Another disadvantage of conventionally available noise-emitting lures is cost. Many start at a retail cost of about $12 or more. Where different colors, shapes, sizes or configurations of tackle are desired, owning a variety of lures to suit an array possible fishing conditions can become prohibitively expensive. 
     What is therefore needed is an affordable, high quality noise-emitting lure which may be utilizable as an in-line modular component that may be selectably used with a limitless combination of attachments such as hooks, blades, jigs, spinners, and various other fishing tackle at the whim of the fisher. The noise-making mechanism of the ideal noise-emitting lure may be one of several non-electronic analog configurations, is not dependent on a power source, and is not prone to water leakage, drag, or entanglement of attached tackle. Finally, the ideal noise-emitting lure may come in a variety of shapes and sizes, may be used in fresh water or in salt water conditions, and may be color customized and/or camouflaged to suit a wide range of fishing needs. 
     SUMMARY OF THE INVENTION 
     The noise-emitting lure of the present invention may include a main housing which may be any of a variety of shapes, including circular, square, scalloped, or angled cylindrical (any of which may be tapered or untapered); spherical; rectangular; or pyramidal, just to name a few. Likewise, the main housing may be any of a variety of lengths and sizes which may be varied according to the type and size of the target fish. The main housing may ideally be fitted with a swivel eyelet member at one end, to which a split ring, carabiner, or similar connector may be connected to accommodate line attachment or attachment of other tackle. The lure of the present invention may also include a second eyelet member at its opposite end which may be swivel or non-swivel. 
     The lure of the present invention may include one or more permanently affixed spinner blades or propeller blade(s) so that, as the lure is pulled through water, a pressure gradient results which causes the propeller blade(s) to rotate, which will, in turn, cause rotational movement of the main housing. Alternatively, rotation of the main housing may be achieved by attaching any of a variety of interchangeable blades or spinners to a non-swivel eyelet member on the lure. 
     Rotation of the main housing may ideally cause one or more tumblers contained within the main housing to tumble and strike the inside walls of the main housing so that a fish-attractive sound or click is emitted. Where the main housing of the lure is circular cylindrical, the tumbler(s) inside the main body may ideally be polygonal, such as a triangle, rectangle, hexagon, octagon or the like, the number of sides of which, along with the rotational speed of the main housing, will help to determine the frequency of clicks emitted by the lure. Further, the type and gauge of material from which the main housing and tumblers are constructed may help to determine the intensity and pitch of the clicks emitted from the lure. The inner walls of the main housing may be smooth, angled, ribbed, or otherwise textured to further affect the frequency of clicks emitted as well as the quality of sound of the clicks. 
     The lure of the present invention may ideally be constructed of a lightweight metal such as aluminum, but may be constructed of brass or any other material of a type and gauge which readily transmits sound of desired quality. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention, its configuration, construction, and operation will be best further described in the following detailed description, taken in conjunction with the accompanying drawings in which: 
         FIG. 1  is an exploded perspective view of a first embodiment of the lure of the present invention which illustrates a cylindrical main housing, a rectangular tumbler member, a swivel eyelet member, a fixed eyelet member, a locking endcap, and a friction-fit endcap; 
         FIG. 2  is a perspective view of the lure of  FIG. 1  as assembled; 
         FIG. 3  is a cross-sectional view taken along line  3 - 3  of  FIG. 2  which illustrates one system of characterizing clearance between the rectangular tumbler member and the cylindrical main housing; 
         FIG. 4  is a is a perspective view of a spinner bait arrangement including a second embodiment of the lure of the present invention having a pair of rib members, attached to a spinner bait, and containing a spherical tumbler member and an octagonal tumbler member; 
         FIG. 5  is a cross-sectional view taken along line  5 - 5  of  FIG. 4  which illustrates main housing, spherical tumbler member, octagonal tumbler member, and 2 rib members; 
         FIG. 6  is a perspective view of a third embodiment of the lure of the present invention which illustrates a ribbed or gear shaped main housing; 
         FIG. 7  is a cross-sectional view taken along line  7 - 7  of  FIG. 6  which illustrates a cylindrical tumbler member inside the gear-shaped main housing; 
         FIG. 8  is a perspective view of a fourth embodiment of the lure of the present invention which illustrates an octagonally shaped main housing; 
         FIG. 9  is a cross-sectional view taken along line  9 - 9  of  FIG. 8  which illustrates clearance between a cylindrical tumbler member interior octagonal shaped main housing; 
         FIG. 10  is a perspective view of a fifth embodiment of the lure of the present invention having a swivel eyelet member at each end of a cylindrical main housing and having fixed propeller blades adjacent one end; 
         FIG. 11  is a perspective view of a sixth embodiment of the lure of the present invention having a cylindrical main housing, fixed endcaps, and fixed o-rings, to which a swivel eyelet member, a hook, and a line are shown attached; 
         FIG. 12  is a perspective view of a seventh embodiment of the lure of the present invention which illustrates a cylindrical main housing with a closed end, a rectangular tumbler member, a swivel eyelet member, a fixed eyelet member, and two locking endcaps; 
         FIG. 13  is a cross-sectional view taken along line  13 - 13  of  FIG. 12  which illustrates the cylindrical main housing with closed end; 
         FIG. 14  is an cross-sectional view similar to that illustrated in  FIG. 13  which illustrates an alternative closed-ended arrangement of a cylindrical main housing which includes an integral eyelet; and 
         FIG. 15  is a perspective view of a eighth embodiment of the lure of the present invention which is nearly identical to the embodiment of  FIG. 6  except for being spirally milled. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The invention, its configuration, construction, and operation will be best further described in the following detailed description, taken in conjunction with the accompanying drawings in which: 
       FIG. 1  is an exploded perspective view of a first embodiment of the lure of the present invention which illustrates a noise-emitting lure  11 , including a main housing  13  and a tumbler member  15 . Main housing  13  includes an interior space  16  defined by inner surface  17  and also includes an outer surface  21 . In  FIG. 1 , main housing  13  is illustrated as having a first open end  18  and a second open end  19 . Although main housing  13  is illustrated as cylindrical and tumbler member  15  is illustrated as rectangular, either may be any of a wide variety of shapes and sizes which allow for sufficiently free movement of tumbler member  15  so that it tumbles inside housing  13  when lure  11  is rotated. tumbler member  15  may be provided in plural with a qualification that it not become stuck or jammed either with respect to inner surface  17 , nor with other tumbler members  15  where more than one tumbler member  15  is present. 
     Illustrated adjacent tumbler member  15 , is a first eyelet assembly  23 , which may include first eyelet member  24 , having eyelet  24 A and body  24 B, along with first endcap  25  having a threaded flange  26 . A second eyelet assembly  27  is shown adjacent housing  13  and may include second eyelet member  28 , which is a swivel eyelet member  28  having eyelet  28 A and body  28 B, along with second endcap  29  having a smooth flange  30 . Eyelet  24 A is illustrated as rotatable with respect to body  24 B, and eyelet  28 A is illustrated as fixed with respect to body  28 B, although either eyelet  24 A or  28 A may rotate with respect to bodies  24 B and  28 B or with respect to any structures supporting eyelet members  24  and  28 . First eyelet member  24  may be a ball-bearing type or any other type that allows for 360 degree rotation. Further, second eyelet assembly  27  is illustrated as including an eyelet member, but may be any attachment structure, such as a button, a rivet, a hook, or any other structure which allows for attachment of various components to lure  11 . 
     Endcaps  25  and/or  29  may be attachable to housing  13  by any number of methods, as previously mentioned. Threaded flange  26  illustrates one possible locking mechanism by which first endcap  25  may be coupled with first open end  18  of main housing  13 , which may include threads  33  into which threaded flange  26  of endcap  25  may be screwed. Second endcap  29  is shown as having a smooth flange  30  to illustrate a possible friction-fit mechanism by which second endcap  29  may be coupled with second open end  19  of main housing  13 . First and second endcaps  25  and  29  may include openings  34  and  35  (opening  35  not immediately seen in  FIG. 1 ), respectively, through which eyelet members  24  and  28  may extend, respectively, when lure  11  is assembled or may include other structures for attachment. 
     Endcaps  25  and  29  may be joined with main housing  13  by any number of means, such as adhesive, soldering or welding, or locking mechanisms, for example, and other water-resistant or waterproof fixative or sealant to prevent water ingress into main housing  13  may be used in conjunction with any of the above. It is also possible for first endcap  25  and first eyelet member  24  to be provided as an integral unit, as could also be the case for second endcap  29  and second eyelet member  28 . Where endcaps  25  and  29  are coupled with main housing  13  using adhesive, tensile strength may be approximately 15 to 20 pounds, which may be sufficient to prevent disassembly of lure  11  when it is not directly in line with a hook. Where lure  11  may be in line with a hook, endcaps  25  and  29  may preferably be joined to housing soldering or welding or a locking mechanism to increase tensile strength beyond 15 to 20 pounds as may be necessary. Further, electro plating or powder coating of lure  11  may be desirable to further increase tensile strength of lure  11 . Endcaps  25  and  29  are illustrated as domed, but may be any shape, including rounded, flat, or pointed, for example. Main housing  13  and endcaps  25  and  29  may be made from any of a variety of materials, including but not limited to wood, plastic, or metal. Likewise, eyelet members  24  and  28  may be sealed to endcaps  25  and  29 , respectively, by any number of means or combinations of means, including adhesive, welding or soldering, or locking mechanism. 
       FIG. 2  is a perspective view of lure  11  of  FIG. 1  as assembled, including main housing  13 , tumbler member  15  shown in dashed line format inside main housing  13 , first eyelet member  24 , second eyelet member  28 , first endcap  25 , and second endcap  29 . Once lure  11  is assembled, endcaps  25  and  29  may be welded, soldered, glued, or otherwise affixed (depending on the materials from which lure  11  is constructed) to main housing  13  and eyelet members  24  and  28  to preferably completely seal tumbler member  15  inside main housing  13  such that water is prevented from seeping into main housing  13  if desired. Water entry may be undesirable and would otherwise affect the sound emitted, based upon the density and shape of tumbler member  15 , its ability to admit water within its tumbler member  15  body, and other considerations. 
       FIG. 3  is a cross-sectional view of lure  11  of  FIGS. 1 and 2  which illustrates one system to show relative clearance between tumbler member  15  and main housing  13 . Assuming lure  11  is not in motion, and viewing D 1  as the distance between a resting main flat surface of tumbler member  15  and inner surface  17  of main housing  13 , then the preferable minimum distance between a main flat surface of tumbler member  15  and inner surface  17  of main housing  13  labeled D 2  may be approximately twice distance D 1 , and the preferred minimum distance between a main flat surface of tumbler member  15  and inner surface of main housing  13  labeled D 3  may be approximately four times distance D 1 . 
     A system for measuring clearance between the corner of tumbler member  15  and inner surface  17  of main housing  13  may also be employed, and choice of alternate systems may be more convenient based upon the shape of tumbler member  15 , such as measuring distance from corners of tumbler member  15 , for example. The minimum clearance described may allow tumbler member  15  to be sufficiently unrestricted so that it turns over and tumbles freely when main housing  13  is rotated, emitting a fish-attractive clicking noise. Main housing  13  and tumbler member  15  may be constructed of from a wide range of materials, such as aluminum, stainless, or brass, with an eye toward buoyancy, density, admission of water into interior space  16  or sealed interior space  16 , minimization of corrosion, etc., but may ideally be designed so that the friction coefficient between main housing  13  and tumbler member  15  is high enough to cause tumbler member  15  to turn over inside main housing  13  rather than slip along inner surface  17  of main housing  13  when main housing  13  is rotated. 
       FIG. 4  is a is a perspective view of a spinner bait arrangement  36  in which a second embodiment of lure of the present invention  37  is incorporated. Lure  37  is nearly identical to lure  11  of  FIGS. 1 and 2  except that main housing  13  includes rib members  38  and  39 , shown in dashed line format, running longitudinally, and  FIG. 4  also illustrates in dashed line format a spherical tumbler member  40  and an octagonal tumbler member  41  inside main housing  13 . Also illustrated in  FIG. 4  are eyelet members  24  and  28  and endcaps  25  and  29 . Lure  37  is shown attached to a preferably rigid spinner bait wire  42  by ring  43  through eyelet  24 A of first eyelet member  24  and to a spinner blade  45  by ring  47  through eyelet  28 A at second eyelet member  28 . A spinner bait head  51  with skirt  53  and hook  55  is also attached to what may be a generally rigid spinner bait wire  42 . Spinner bait wire  42  may include a bend  57  or other specialized structure to which a fishing line  58  is shown attached. As spinner bait  36  is pulled through the water by line  58 , blade  45  may rotate and may exert torque on second eyelet member  28  and, in turn, on main housing  13 , causing tumbler members  40  and  41  to turn over or tumble inside main housing  13  impacting rib members  38  and  39  and inner surface  17  of main housing  13  such that lure  37  is caused to emit a fish-attractive noise or click. First eyelet member  24  may isolate the passive torque from movement of lure  37  so that the rotation created by blade  45  does not translate to spinner bait wire  42 , line  58 , spinner bait head  51  or hook  55 . Note that spinner bait wire  42 , spinner blade  45 , spinner bait head  51 , and line  58  are just a few of hundreds of components which can be assembled to utilize one of the many ways in which lure  37  (or any other embodiment of the lure of the present invention) can be successfully combined with currently available fishing tackle to create a custom spinner bait arrangement. 
     Like all embodiments of the lure of the present invention described herein, sound emitted by lure  37  may be sensible from as many as 7 feet or more underwater, and may mimic the sound of an injured or distressed baitfish, as such a low-frequency sound is known to attract predator fish. Because lure  37  may be sensed by fish from a significant distance, it may draw predator fish to the prey, which may be a distinct advantage over commonly available reaction lures. Reaction lures typically create sudden movement in order to mimic the movement that occurs when prey, such as a worm, bug, or frog, for example, falls into water near a fish. The goal of a reaction lure is typically to provoke a sudden attack by a fish, but in the case where no fish are in the immediate vicinity of a reaction lure, this kind of lure may generally be less reliable for catching fish than noise-making lures such as the lures of the present invention. 
       FIG. 5  is a cross-sectional view of lure  37  taken along line  5 - 5  of  FIG. 4  which more clearly illustrates rib members  38  and  39  which extend radially inward from inner surface  17 , spherical tumbler  40 , and octagonal tumbler member  41 . Note that although tumbler members  40  and  41  are illustrated as spherical and octagonal, respectively, they may also be polygonal, i.e., hexagonal, triangular, or octagonal, for example. Additionally, tumbler members may vary with regard to overall length. The diameter of tumbler members  40  and/or  41  is preferably one to two millimeters less than distance D 4  between rib members  38  and  39 , at a minimum, to allow tumbler members  40  and  41  to roll over and pass between rib members  38  and  39  as main housing  13  is rotated. Although  FIG. 4  illustrates main housing  13  as containing two tumbler members  40  and  41 , it is conceivable that more than two tumbler members may be contained, in which case the sum of the tumbler diameters may preferably be less than the critical clearance to allow multiple tumblers to freely pass between and around rib members  38  and  39 . 
       FIG. 6  is a perspective view of a third embodiment of the lure of the present invention  65  which is similar to lure  11  of  FIGS. 1 and 2  except that lure  65  includes a gear-shaped main housing  67  having an outer surface  71  which is characterized by longitudinally situated peaks  73  and troughs  75 . Like lure  11  of  FIGS. 1 and 2 , lure  65  may include a first eyelet assembly  76 , which may include a swivel eyelet member  24 , having eyelet  24 A and body  24 B, along with first endcap  78 . Lure  65  may also include second eyelet assembly  80 , which may include a fixed eyelet member  28  having eyelet  28 A and body  28 B, along with second endcap  82 . A cylindrical tumbler member  87  is illustrated in dashed line format inside main housing  67 . 
       FIG. 7  is a cross-sectional view of lure  65  taken along line  7 - 7  of  FIG. 6  which illustrates an inner surface  89  of main housing  67  characterized by longitudinally situated peaks  91  and troughs  93  similar to outer surface  71 . Cylindrical tumbler member  87  is illustrated inside main housing  67 . During use, tumbler member  87  may roll over peaks  91  and into troughs  93  to cause lure  65  to emit fish-attractive sounds or clicks. The diameter of tumbler member  87  may preferably be no greater than the width of trough  93  so that the clicks emitted from lure  65  are distinct, low-frequency clicks similar to the sounds made by injured or distressed baitfish, which are known to attract fish. 
     The density of material from which tumbler member  87  is constructed may preferably be sufficiently heavy, and the friction coefficient between inner surface  89  of main housing  67  and tumbler member  87  may preferably be high enough to ensure that, regardless of the rate at which main housing  67  is rotated, the timing of the clicks emitted will be appropriately spaced. Likewise, the friction coefficient may preferably not be so high as to repeatedly pick up and displace tumbler member  87  so as to interfere with the desired sounds emitted by lure  65 . Note that although outer surface  71  of main housing  67  is illustrated as gear shaped, it may just as easily be a smooth surface such as illustrated for main housing  13  of  FIGS. 1 through 3 . Likewise, although tumbler member  87  is illustrated as cylindrical, it may also be polygonal, i.e., rectangular, hexagonal, triangular, or octagonal, and may vary in length as well. 
       FIG. 8  is a perspective view of a fourth embodiment of the lure of the present invention  97  which is nearly identical to lure  11  of  FIGS. 1 and 2  except that lure  97  includes a octagonal main housing  101  with angled outer walls  103 . Like lure  11  of  FIGS. 1 and 2 , lure  97  includes a first swivel eyelet assembly  104  which may include swivel eyelet member  24  having eyelet  24 A and body  24 B and may also include first endcap  107 . Lure  97  may also include a second eyelet assembly  110 , which may include a fixed eyelet member  28  having eyelet  28 A and body  28 B, and may also include second endcap  113 . A cylindrical tumbler member  115  is illustrated in dashed-line format inside main housing  101 . 
       FIG. 9  a cross-sectional view taken along line  9 - 9  of  FIG. 8  and illustrates lure  97  of  FIG. 7  which illustrates angled outer walls  103  and angled inner walls  117  of main housing  101 . Cylindrical tumbler member  115  is illustrated inside main housing  101 . During use, tumbler member  115  strikes angled inner walls  117  of main housing  101 , causing lure  97  to emit a series of fish-attractive noises or clicks. The diameter of tumbler member  115  may preferably be no greater than the width D 6  of any flat surface on angled inner walls  117  so that the clicks emitted from lure  97  are distinct, low-frequency clicks of a type known to attract fish. 
     Note that although main housing  101  is illustrated as having angled outer walls  103 , the exterior of main housing  101  may just as easily be a smooth surface such as that of main housing  13  of  FIGS. 1 through 3 . Likewise, although tumbler member  115  is illustrated as cylindrical, it may also be polygonal, i.e., rectangular, hexagonal, triangular, or octagonal, for example, and may be any of a variety of lengths. 
       FIG. 10  is a perspective view of a fifth embodiment of the lure of the present invention  123  which is similar to lure  11  of  FIGS. 1 through 3  except that it may include two swivel eyelet assemblies  125  and  129 , each of which may include swivel eyelet members  126  and  130  (including eyelets  126 A and  130 A and bodies  126 B and  130 B, respectively) and endcaps  127  and  131 , respectively. Lure  123  may also include propeller blades  135  fixed to one end of a main housing  137 . Alternatively, propeller blades  135  may be attached to one of endcaps  127  or  131 . Where propeller blades  135  are an extension of main housing  137 , both eyelet members  126  and  130  may preferably be swivel eyelet members  126  and  130  to further decrease the possibility of line twisting and entanglement when lure  123  is in use. 
       FIG. 11  is a perspective view of a sixth embodiment of the lure of the present invention  141  which is similar to lure  11  of  FIGS. 1 through 3  except that first eyelet assembly  143  may include a first endcap  145  attached to main housing  147  and an o-ring  149  attached to first endcap  145  and to which a swivel eyelet member  151  (including eyelet  151 A and body  151 B) is shown attached via ring  152 . Second eyelet assembly  153  may include second endcap  155  attached to main housing  147  and o-ring  157  attached to second endcap  155  and to which a hook  159  is shown attached.  FIG. 11  further illustrates a fishing line  161  attached to eyelet  151 A of swivel eyelet member  151 , as well as a spinner blade  163  connected to lure  141  between first endcap  145  and o-ring  149 . Spinner blade  163  drives rotation of main housing  147  as lure  141  is pulled through the water, but swivel eyelet member  151  may prevent translation of rotation of main housing  147  to line  161 , thereby minimizing the possibility of twisting and entanglement of line  161 . Although lure  141  is shown with swivel eyelet member  151  forward of main housing  147 , note that a swivel eyelet member  151  may also be included between main housing  147  and hook  159  where rotation of hook  159  is undesirable. 
     Like all lures of the present invention, lure  141  can be used with any combination of fishing tackle which will allow the lures to operate as described. Any of the lures shown herein may be painted or otherwise coated or treated to suit a specified set of fishing conditions, for example with fluorescent paint to increase lure visibility in low-visibility water conditions. Likewise, the lures of the present invention may be made luminescent to achieve a fish scale effect. Any of the above-described lures may be used in fresh water or salt water, and the length and diameters of the lures may be varied accordingly to create a range of different sounds at varying frequencies. Likewise, the materials from which the lures are constructed may be any number of materials, such as wood, metal, and/or plastic. Coatings used for the lures may be directed toward attracting certain types of fish as well as toward the prevention of rust and/or corrosion as the case may be, depending on the fishing conditions in which the lures will be used. 
       FIG. 12  is an exploded perspective view of a seventh embodiment of the lure of the present invention  167  which is similar to lure  11  of  FIG. 1  except that main housing  169  has an open first end  170  adjacent a first set of threads  171  and a closed second end  172  adjacent a second set of threads  173 . First eyelet assembly  175  may include first eyelet member  24  (having eyelet  24 A and body  24 B) and first endcap  176 . Additionally, second eyelet assembly  179  may include second eyelet member  28  (including eyelet  28 A and body  28 B) and second endcap  180  having threads  181  by which it may be attached to main housing  169 . Note that endcap  176  is identical to endcap  180 , including threads  181 . Endcaps  176  and  180  may include openings  182  and  183 , respectively, through which eyelet members  24  and  28  may extend, respectively, when lure  167  is assembled. Main housing  169  with closed end  172  illustrates one alternative means of producing lure  167  which may maximize efficiency and minimize costs. 
       FIG. 13  is a cross-sectional view of cylindrical main housing  169  taken along line  13 - 13  of  FIG. 12  which illustrates open first end  170 , closed second end  172 , outer surface  21 , inner surface  17 , and inner space  16 . 
       FIG. 14  is a cross-sectional view similar to that illustrated in  FIG. 13  but illustrates an alternative cylindrical main housing  184  having a closed end  185  in which a fixed eyelet  186  is integrated. 
       FIG. 15  is a perspective view of a eighth embodiment of lure of the present invention  187  which is nearly identical to lure  65  of  FIG. 6  except that it includes a gear-shaped main housing  189  having an outer surface  191  characterized by longitudinally situated peaks  193  and troughs  195  which are spirally arranged. The spiral arrangement may help to facilitate rotation of main housing  189  when lure  187  is pulled through water. As shown, lure  187  may also include a first eyelet assembly  197  which may include eyelet member  24  (having eyelet  24 A and body  24 B) and endcap  199 , and second eyelet assembly  201  which may include eyelet member  28  (having eyelet  28 A and body  28 B) and endcap  203 . A cylindrical tumbler member  205  is illustrated in dashed line format inside main housing  189 . 
     Finally, although the invention has been derived with reference to particular illustrative embodiments thereof, many changes and modifications of the invention may become apparent to those skilled in the art without departing from the spirit and scope of the invention. Therefore, included within the patent warranted hereon are all such changes and modifications as may reasonably and properly be included within the scope of this contribution to the art.