[ 0032 ] fig1 shows a section of a preferred embodiment of the present invention . a housing 100 can be made of waterproof , electrically - resistive materials such plastic , glass , ceramic , or other waterproof , electrically - resistive materials suitable for casting , forming , or machining that are known in the art . a light - transmitting material allows use of an internal light - emitting attraction device . a preferred material is a transparent acrylic plastic rod , which can be center - drilled to decreasing diameters to create an interior cavity 110 with a shoulder 120 dividing a small - diameter portion 111 from a large - diameter portion 112 . the cavity has an opening 130 and is tapped just inside the opening 130 to create a female threaded portion 140 . the threads may alternatively be cut or formed into the exterior surface 150 . most components subsequently inserted within the interior cavity 110 would also have a circular cross - section , but square , rectangular , and many other cross - sectional shapes may be utilized . light - emitting diode ( led ) 160 or other low - wattage illumination device is mounted on a non - conductive spacer 170 which is too large to pass into the small - diameter portion 111 of the interior cavity and which rests against the shoulder 120 . a compressible o - ring 180 holds a battery cathode 190 apart from the spacer 170 and a battery cathode contact 115 . a battery 125 rests within the large - diameter portion 112 against the o - ring 180 , with a battery anode contact 135 connecting the battery anode 145 to the led 160 . the battery 125 may be any of a variety of cells , such as a sanyo cr - 1 / 3n manganese oxide - lithium or similar cell as commonly used in small photographic and electronic devices . any suitable number of batteries may be used to achieve a desired voltage and configuration . an optional lower eyelet 155 may be provided for attachment of a line or leader . the led 160 may be exchanged for leds or other light sources of different colors as may be deemed desirable for current water conditions or the type of fish sought . [ 0034 ] fig2 shows a second section of a preferred embodiment of the present invention . this section functions in part as an end cap for the housing 100 . a body 200 has a male threaded portion 210 proportioned to mate with the female threaded portion 140 shown in fig1 . the body 200 is typically made of the same non - conductive material as the housing 100 . a conductor 230 passes completely through the body 200 with an upper eyelet 240 attached to or forming the upper end of the conductor 230 . in alternative embodiments , the body 200 may be made of conductive material , eliminating the need for the conductor 230 . in alternative embodiments , bayonet , flange , or other connection methods may be used between sections or end caps . when the male threaded portion 210 of the body 200 is screwed completely into the opening 130 of the housing 100 , an o - ring 220 seats around the opening 130 to seal the interior cavity portions 140 , 112 , 111 from the external environment . the battery 125 is forced downward , compressing the o - ring 180 and causing the battery cathode 190 to contact the battery cathode contact 115 , energizing the led 160 and producing an electrical potential at the exposed end of conductor 230 , thereby creating both an electrical potential attraction source and a light - emitting attraction source . gaskets and other sealing devices may be substituted for the o - ring 220 . if the upper eyelet 240 is conductive , it may also have the same potential , as may any attached conductive leader . the potential usually does not exceed positive or negative 0 . 75 volt . this potential may be controlled by selection of a diode , resistor , and other components . the circuit may also or instead be controlled by other switch configurations located within the interior cavity . positive or negative buoyancy can be selected by choosing suitable materials and components , and by increasing or decreasing the overall volume of the interior cavity or cavities . in use , the sealed and activated fish attractor comprising the attached sections shown in fig1 and 2 would typically be suspended from a fishing line attached to the upper eyelet 240 , then lowered into a fishing area to a depth appropriate for the environmental conditions and type of fish sought . another line might be attached to the lower eyelet 155 to suspend bait , a lure , and / or another fish attractor at a lower depth . the fisherman may also use a separate fishing rig to catch fish attracted to the vicinity of the fish attractor . [ 0038 ] fig3 shows an alternative embodiment of the present invention , configured to accommodate a smaller battery 325 . the characteristics of the housing 300 are the same as those of the housing 100 in fig1 except that the large - diameter portion 312 is shorter than the large - diameter portion 112 shown in fig1 and the small - diameter portion 311 is correspondingly longer than the small - diameter portion 111 shown in fig1 . the additional length of the small - diameter portion 311 is filled by an elongated spacer consisting of an elongated spacer body 371 sized to fit the small - diameter portion 311 and a lip 372 sized to fit the large - diameter portion 312 and rest against a shoulder 320 . a battery cathode contact 315 passes from an led 360 , which is mounted on the elongated spacer body 371 , through the elongated spacer body 371 and terminates in a coil 316 . a battery anode contact 335 passes from the led 360 through the elongated spacer body 371 and terminates in a post 317 . in an alternative embodiment , a flat ring is substituted for the post 317 . the battery cathode 390 remains in contact at all times with the coil 316 . when the male threaded portion 210 of the body 200 is screwed completely into the opening 330 , the o - ring 220 seats around the opening 330 to seal the interior cavity portions 340 , 312 , 311 from the external environment . the battery 325 is forced downward , compressing the coil 316 and causing the battery anode 345 to contact the post 317 , energizing the led 360 . positive or negative buoyancy can be selected by choosing suitable materials and components , and by increasing or decreasing the overall volume of the interior cavity . the elongated spacer body 371 , lip 372 and the led 360 may be exchanged as a unit to install an led of a different color or with different electrical properties . the battery 325 may be any of a variety of cells , such as a sanyo cr - 1 / 3n manganese oxide - lithium or similar cell as commonly used in small photographic and electronic devices . any suitable number of batteries may be used to achieve a desired voltage and configuration . an optional lower eyelet 355 may be provided for attachment of a line or leader . [ 0041 ] fig4 shows a section comprising an o - ring 420 , a male threaded portion 410 , an eyelet 440 , and a body 400 that is the same as the body 200 in fig2 in all respects except that no conductor is present . the body - 400 screws into the housing 500 shown in fig5 in the same manner as the body 200 shown in fig2 screws into the housing 100 shown in fig1 . the components shown in fig5 are identical to and function identically to those shown in fig1 except that unlike the section shown in fig1 the section shown in fig5 has a battery anode conductor 535 that connects the battery anode 590 to the lower eyelet 555 , eliminating the need for the conductor 230 shown in fig2 . the body 200 in fig2 could be used with the housing 500 shown in fig5 . [ 0042 ] fig6 shows a housing 600 that is essentially identical to the housing 300 shown in fig3 . unlike the section shown in fig3 however , the section shown in fig6 utilizes a chemoluminescent capsule 665 in a small - diameter portion 611 to produce light . such capsules are known in the art and may be replaced with each use . a battery 625 rests against a shoulder 620 and has an impedance element 636 connected between a battery cathode 690 and a battery anode 645 , providing a desired voltage drop . the impedance element 636 may be a diode , resistor , or other suitable component as is known in the art . fig7 shows a section identical to the section shown in fig2 . the section shown in fig7 screws into the section shown in fig6 with the conductor 230 connecting a battery anode 645 to the outside environment . [ 0043 ] fig8 shows a section of a preferred embodiment of the present invention . the upper part of the embodiment shown in fig8 is identical to the embodiment shown in fig3 . however , the lower part has a second interior cavity 805 filled by a branching conductor 806 and extending through a male threaded portion 808 to extend from a second opening 832 . the conductor branches 807 emerge from the exterior surface 850 of the section at as many points as deemed desirable . an o - ring 823 provides a seal when the section shown in fig8 is screwed into another section . in an alternative embodiment , a flat ring is substituted for the post 817 . the section shown in fig9 is identical to the section shown in fig2 and functions in the same manner when screwed into the female threaded portion 840 to connect the battery anode 845 to the environment and to the post 817 to energize the led 860 . the section shown in fig1 functions as a bottom end cap when the section shown in fig8 is used alone . a body 1000 can be made of plastic , glass , ceramic , metal , or other waterproof materials suitable for casting , forming , or machining . a female threaded portion 1040 is sized to mate with the male threaded portion 808 shown in fig8 . an optional eyelet 1055 provides an attachment point for fishing line or other components . [ 0045 ] fig1 shows another section of a preferred embodiment of the present invention . the section shown in fig1 is generally identical to the section shown in fig8 except that the first interior cavity 1110 has been elongated to accommodate a compression switch 1118 and a vibration source that includes a motor assembly 1163 , a sleeve 1166 , and a vibration element 1167 . in an alternative embodiment the sleeve 1166 could be integral with the vibration element 1167 . in still another embodiment the sleeve 1166 could be eliminated and the motor assembly 1163 could rest against a shoulder ( not shown ) positioned to separate the motor assembly 1163 and the vibration element 1167 . the compression switch 1118 depicted in fig1 is shown in greater detail in fig1 a . as shown in fig1 , the compression switch may slide freely within the first interior cavity 1110 . in an alternative embodiment of the compression switch 1118 shown in fig1 b , the compression switch 1118 may have a lip 1378 ( not shown in fig1 ) that rests against a shoulder 1120 . the motor assembly 1163 is shown in greater detail in fig1 . the vibration element 1167 is shown in greater detail in fig1 and 17 , with an alternative vibration element 1867 shown in fig1 and 19 . in an alternate embodiment of the section shown in fig1 , the motor assembly shown in fig1 may be exchanged for the motor assembly shown in fig1 , which is identical to the assembly in fig1 except for the addition of an led . if the section shown in fig1 is to be used alone it can be sealed with the sections shown in fig9 and 10 in the same manner as the section shown in fig8 . alternatively , the male threaded portion 808 shown in fig8 can be screwed into the female threaded portion . 1140 shown in fig1 , sealing the first interior cavity 1110 and compressing the battery 1125 , forcing a battery pole 1190 against the compression switch 1118 . the compression switch 1118 in turn compresses the motor assembly 1163 , the sleeve 1166 , and the vibration element 1167 , thereby closing the compression switch 1118 , energizing the motor assembly 1163 and creating an electrical potential attraction source . the motor assembly 1163 then causes an eccentric weight 1161 to rotate , producing a vibration in the motor assembly 1163 . the vibration is transmitted throughout the fish attractor , creating sound in the form of compression waves in the surrounding medium . in the embodiment shown , the eccentric weight 1161 is a permanent magnet that moves a magnetic ball 1168 within the vibration element 1167 , producing vibrations of different frequencies . in an alternative embodiment , the vibration element 1167 may be eliminated and the section shown in fig1 may rely on the motor assembly 1163 and eccentric weight 1161 to cause vibration . in an another embodiment , a solenoid vibration source as is known in the art may be used . in still another embodiment , any of a number of spring - powered or other non - electrical vibration sources known in the art may be used . the many possible vibration sources used in the present invention are interchangeable and easily installed . a specific vibration element may be selected for its ability to mimic prey species or simply to create an attractive anomaly that fish are impelled to investigate . screwing the male threaded portion 808 shown in fig8 into the female threaded portion 1140 shown in fig1 also causes the branching conductor 806 shown in fig8 to contact the battery anode 1145 shown in fig1 , thereby inducing an electrical potential in the conductor branches 807 shown in fig8 . the threaded male portion 808 shown in fig8 may be sealed with the end cap shown in fig1 . [ 0050 ] fig1 shows another section of a preferred embodiment of the present invention . the section shown in fig1 has the same characteristics as the section shown in fig3 except that a divider 1277 has been added to the small diameter portion 1211 to create a chamber 1214 with a magnetic ball 1268 , and a motor 1264 with an eccentric weight 1261 have been added to an elongated spacer body 1271 to create a combined vibration / led attraction element . the chamber 1214 may contain more than one magnetic ball 1268 or other objects . when either the male threaded portion 808 shown in fig8 or the male threaded portion 1108 shown in fig1 is screwed into the female threaded portion 1240 shown in fig1 , the first interior cavity 1210 is sealed and the battery 1225 and the coil 1216 are compressed , causing the battery anode 1245 to contact the post 1217 , energizing the led 1260 and the motor 1264 . in an alternative embodiment , a flat ring is substituted for the post 1217 . the motor 1264 then causes the eccentric weight 1261 to rotate , producing a vibration in the elongated spacer body 1271 . in the embodiment shown , the eccentric weight 1261 is a permanent magnet that moves a magnetic ball 1268 within the chamber 1214 , producing vibrations of different frequencies . in an alternate embodiment , the divider 1277 and the magnetic ball 1268 may be eliminated and the section shown in fig1 may rely on the motor 1264 and the eccentric weight 1261 to cause vibration . screwing the male threaded portion 808 shown in fig8 or the male threaded portion 1108 shown in fig1 into the female threaded portion 1240 shown in fig1 also causes the branching conductor 806 shown in fig8 or the branching conductor 1106 shown in fig1 to contact the battery anode 1245 shown in fig1 , thereby inducing an electrical potential in the conductor branches 807 shown in fig8 or the conductor branches 1107 shown in fig1 , respectively . [ 0052 ] fig1 a shows an enlarged cross - section of the compression switch 1118 shown in fig1 . a sleeve 1321 is open at both ends and has a positive conductor 1331 embedded along its length and protruding slightly from each end . a plug 1322 has an upper negative conductor 1333 embedded in its core and protruding slightly from each end . the plug 1322 slides freely within the sleeve 1321 but is retained by retaining ring 1324 . a bi - plug 1326 also slides freely within the sleeve 1321 and has a lower negative conductor 1334 embedded in its core . an upper compression spring 1327 forces the plug 1322 and the bi - plug 1326 apart . a lower compression spring 1328 exerts opposing pressure against the bi - plug 1326 , so that the bi - plug 1326 receives pressure from both directions . a negative spring contact 1337 creates a conduction path between the lower negative conductor 1334 and the lower compression spring 1328 . the walls surrounding the lower opening 1329 of the sleeve 1321 may optionally be internally threaded to accept and retain an insert . in a preferred embodiment of the compression switch 1118 the sleeve 1321 and its internal components are cylindrical , but other cross - sectional shapes may be preferred and used for specific applications . [ 0053 ] fig1 b shows an alternate embodiment of the compression switch shown in fig1 and 13 a . a sleeve 1373 is open at both ends and has a positive conductor 1374 embedded along its length and protruding slightly from each end . a lip 1378 surrounds and may be positioned anywhere along the length of the exterior surface of the sleeve 1373 . a plug 1375 has an upper negative conductor 1376 embedded in its core and protruding slightly from each end . the plug 1375 slides freely within the upper portion of the sleeve 1373 but cannot slide downward past an upper shoulder 1320 . a bi - plug 1379 slides freely within the lower portion of sleeve 1373 but cannot slide upward past a lower shoulder 1329 . the bi - plug 1379 has a lower negative conductor 1381 embedded in its core . an upper compression spring 1382 forces the plug 1375 and the bi - plug 1379 apart a limited distance while retaining the plug 1375 and bi - plug 1379 within the sleeve 1373 . the upper end of the upper compression spring 1382 is retained by a retaining groove 1386 in the plug 1375 . the lower end of the upper compression spring 1382 is retained by an upper retaining groove 1389 in the bi - plug 1379 . in an alternate embodiment , the upper end of the upper compression spring 1382 may be retained by a friction fit with a lower portion 1387 of the plug 1375 , while the lower end of the upper compression spring 1382 may be retained by a friction fit with an upper portion 1388 of the bi - plug 1379 . a lower compression spring 1383 exerts opposing pressure against the bi - plug 1379 , so that the bi - plug 1379 receives pressure from both directions . a negative spring contact 1384 creates a conduction path between the lower negative conductor 1381 and the lower compression spring 1383 . the upper end of the lower compression spring 1383 is retained by a lower retaining groove 1391 in the bi - plug 1379 . in an alternative embodiment , the upper end of the lower compression spring 1383 may be retained by a friction fit with a lower portion 1392 of the bi - plug 1379 . the walls surrounding the lower opening 1385 of the sleeve 1373 may optionally be internally threaded to accept and retain an insert . in a preferred embodiment of the compression switch 1118 the sleeve 1373 and its internal components are cylindrical , but other cross - sectional shapes may be preferred and used for specific applications . the polarities of the conductors may be reversed if circumstances warrant . the compression switch is designed to rest within an interior cavity between any combination of attractive components . when a section containing a compression switch is sealed with a cap or another section , a component at one end of the compression switch presses the component &# 39 ; s positive post ( usually a ring ) against the compression switch &# 39 ; s positive conductor 1331 , 1374 , and the component &# 39 ; s negative conductor against the compression switch &# 39 ; s upper negative conductor 1333 , 1376 . another attractive component similarly presses against the opposite end of the switch , forcing the switch &# 39 ; s upper negative conductor 1333 , 1376 against its lower negative conductor 1334 , 1381 , thereby closing the switch and energizing the components . this switch design is interchangeable with other components and easily installed in any section , replacing o - rings that are difficult to handle and easily lost while maintaining low - resistance connections between components without damaging the components with excessive pressure . [ 0056 ] fig1 shows an enlarged cross - section of the motor assembly 1163 and the eccentric weight 1161 shown in fig1 . a low - wattage dc electric motor 1441 is mounted in a motor sleeve 1451 that has a reduced - diameter insert portion 1452 . the reduced - diameter insert portion 1452 may optionally be externally threaded to screw into the lower opening 1329 shown in fig1 a or the lower opening 1385 shown in fig1 b . a negative conductor 1438 terminates in a plate 1454 that substantially covers the end of the reduced - diameter insert portion 1452 . a positive conductor 1439 terminates in a conductive ring 1456 that surrounds the base of the reduced - diameter insert portion 1452 . the motor 1441 has a drive shaft 1442 protruding from its lower end , with an eccentric weight 1161 mounted on the lower end . when the reduced - diameter insert portion 1452 is inserted or screwed into the lower opening 1329 shown in fig1 a and the section is assembled as shown in fig1 , pressure on the battery 1125 forces battery cathode 1190 into contact with the upper negative conductor 1333 , which is forced into contact with the lower negative conductor 1334 , which is forced into contact with the plate 1454 . the battery anode 1145 is also forced into contact with the positive conductor 1331 , which is forced into contact with the conductive ring 1456 , energizing the motor 1441 . the structure shown in fig1 b operates in the same manner , with the reduced - diameter insert portion 1452 inserted or screwed into the lower opening 1385 shown in fig1 b , and pressure on the battery 1125 forcing battery cathode 1190 into contact with the upper negative conductor 1376 , which is forced into contact with the lower negative conductor 1381 , which is forced into contact with the plate 1454 . the battery anode 1145 is also forced into contact with the positive conductor 1376 , which is forced into contact with the conductive ring 1456 , energizing the motor 1441 . [ 0058 ] fig1 shows an enlarged cross - section of an alternate embodiment of the motor assembly 1163 shown in fig1 . the motor assembly shown in fig1 is essentially the same as that shown in fig1 , except for the addition of an led 1560 that is energized simultaneously with the motor 1441 . [ 0059 ] fig1 shows an enlarged cross - section of the vibration element 1167 shown in fig1 . fig1 shows an enlarged top view of the vibration element 1167 shown in fig1 . the vibration element 1167 is a hollow ring containing one or more unattached objects , at least one of which is a ball 1168 that can be attracted or repelled by the eccentric weight 1161 ( not shown in fig1 or fig1 ), thereby forced to roll around the vibration element 1167 to create vibrations . [ 0060 ] fig1 shows an enlarged cross - section of an alternate embodiment of the vibration element 1167 shown in fig1 . fig1 shows an enlarged top view of the same alternate embodiment . the vibration element 1867 shown in fig1 is a hollow cylindrical section containing one or more unattached objects , at least one of which is a ball 1868 that can be attracted or repelled by the eccentric weight 1161 ( not shown in fig1 or fig1 ), thereby forced to roll around the vibration element 1867 to create vibrations . the ball 1868 comprises two magnets bonded or encased together so that the exterior surface of the ball presents either two north or two south poles . a magnetic disk 1893 forms the lower surface of the vibration element 1867 and is oriented so that its surface nearest the ball 1868 presents a pole that opposes that of the ball 1868 , forcing the ball 1868 outward against the inner surface of the vibration element 1867 . when more than one magnetic object is present within the vibration element 1867 , the magnetic objects will have the same magnetic polarity as each other but the polarity opposite that of the magnetic disk 1893 , so that the objects are forced outward against the inner surface of the vibration element 1867 and will remain equidistant . the vibrations emanating from the vibration elements shown in fig1 , 17 , 18 , and 19 can be modified by irregularities in an inner surface of the vibration element , the objects within the vibration element , and / or variations in the speed of the motor 1441 . for example , the objects may be aspherical , or be dimpled like a golf ball . the vibrations may be constant or pulsed by control circuitry as is well - known in the art . all of the vibration sources disclosed herein cause the outer surfaces of the fish attractor to produce compression waves , or sound , in the surrounding aquatic environment , thereby attracting the attention of fish even in dark or murky water . the vibration element may have a polygonal or irregular cross - section . generally , the attraction sources disclosed herein are configured to be interchangeable , so that they may be used in any combination and order within a section . electric potential and light sources may be constant or pulsed by control circuitry as is well - known in the art , to simulate bait fish activity or simply to create an attractive anomaly . a section can be made with interior cavity sizes of any practical length , so that any number of different attraction sources may be used within that section . further , any number of separate sections may be combined to produce an attractor with optimum characteristics for a given environment and mode of fishing . although the attraction sources disclosed may be used alone with beneficial effect , a particularly effect method of employing the present invention is to exploit the tendency of many fish to stay near the thermocline ( temperature discontinuity ) that tends to form in many bodies of water . the user suspends at least two fish attractor sections at different levels , optimally above and below the thermocline . at least one section would contain a single - pole electrical potential source . each section might also contain a light or vibration source . the sections would preferentially be suspended from different lines , but could be suspended from the same line if necessary . once the fish attractor sections are activated and positioned the user may use organic bait on a hook or artificial lures as are known in the art to catch fish attracted to the vicinity . three fish attractor sections can be used to attract fish from a still wider area . the sections are suspended from separate lines , one section just below the surface , another at mid - depth , and a third at or near the bottom . each section has an electrical potential attraction element . the section near the surface might contain a white or blue light source to simulate and attract bait fish such as minnows and shad . the mid - depth section contains a light source and a vibration source . the bottom section contains a light source to attract bottom - dwelling fish . as previously described , once the fish attractor are activated and positioned the user may use conventional bait or artificial lures fish attracted to the vicinity . the principles , embodiments , and modes of operation of the present invention have been set forth in the foregoing specification . the embodiments disclosed herein should be interpreted as illustrating the present invention and not as restricting it . the foregoing disclosure is not intended to limit the range of equivalent structure available to a person of ordinary skill in the art in any way , but rather to expand the range of equivalent structures in ways not previously contemplated . numerous variations and changes can be made to the foregoing illustrative embodiments without departing from the scope and spirit of the present invention .
a modular fish attractor with sectional components that can be used individually or connected in many different combinations . interchangeable attractive elements within components include light - emitting diodes , chemoluminescent capsules , solenoids , vibrating motors , and electrical potential differences produced by single - pole sources .