referring to the various figures in the drawing , and more particularly to fig1 and 2 , it is seen that a commonly commercially available , “ standard ” tapered 5 gallon ( 18 . 9 liters ) bucket is preferably used to provide the bait bucket designated generally by reference numeral 10 in which a bucket 11 contains a retrieval assembly “ ra ” slidably inserted into the bucket . the bucket is preferably provided with a handle 12 for easy portability and a substantially rigid lid 40 with a peripheral flange 41 adapted to snap over and removably lock onto the upper periphery of the bucket . such tapered 5 gal buckets have an inner diameter near the base ( at the bottom ) of about 10 . 25 ins . ( 26 . 0 cm ) and an inner diameter near the top of about 11 . 25 ins . ( 28 . 57 cm ) and are readily available commercially . smaller or larger buckets may be used , if desired . the bucket 11 and lid 40 may be of metal or a synthetic resinous material (“ plastic ”), but is preferably of high density polyethylene ( hdpe ) or some other readily available thermoformable synthetic resinous material which is not susceptible to corrosion and can be readily cleaned so as to provide an environment in which the bait will happily survive . the lid 40 is preferably provided with a central access opening 42 having a diameter in the range from about 4 ins ( 10 . 16 cm )- 7 ins ( 17 . 78 cm ) to allow a person to thrust his / her hand into the otherwise closed bucket 11 . the central access opening 42 is closed with the flap 43 pivotally connected to the lid 40 by a hinge 44 ( see fig3 ) which has a bias such that the weight of the open flap 43 is sufficient to urge the flap into the closed position . the lid 40 is also provided with an opening 47 for passage of vertical valve stem 61 . if the bait is to live and be used over an extended period of time , or even several hours , and is to remain healthy , the bait bucket is additionally provided with an “ air - pump ” or aerator 70 to aerate the water placed in the bucket 11 . the air pump 70 comprises in combination ( i ) a battery 73 to power the air - pump ; ( ii ) an air - tube 71 inserted through an access opening 46 in the lid 40 and ( iii ) an air - dispersing means or bubbler 72 immersed in water in the bucket , to which bubbler the air - tube is connected at one end , the other end being connected at with the output of the air pump . the bubbler 72 is used to create air bubbles that are bubbled through the water to provide better contact of the air with the water , thus increasing the efficiency of getting oxygen absorbed into the air . referring particularly to fig2 , the flap 43 is in the open position . though it is not necessary to lock the flap , in the closed position , to the lid , it is desirable to do so . to this end , the periphery of the flap 43 is provided with a flexible v - shaped projection 48 having a detent ( not visible ) on the outer surface of the distal arm ( relative to the periphery of the flap ) of the v - shaped projection . a slot 49 is provided in the lid 40 at a location in registry with the v - shaped projection 48 when the flap 43 is in the closed position , and the flap may be locked into the closed position by pressing the v - shaped projection into the slot 49 . retrieval assembly ra ( shown in fig3 ) includes an l - shaped frame 21 , the upper portion 22 of which frame is shown in the “ up ” position , wedged between apertures in the lid 40 , to raise colander 50 . the upper portion 22 includes spaced - apart vertical tubular members (“ tubes ”) 23 and 24 , preferred for convenience and economy , which are slidably disposed in correspondingly spaced - apart openings in the lid 40 , and the tubes are preferably connected at their upper ends by cross - tubular member (“ cross - tube ”) 25 to provide a convenient gripping handle to raise and lower the l - shaped frame . the rigidity ( referred to herein ) of the lid is such that the through - apertures or openings in the lid are not distensible by up - and - down movement of vertical members 23 and 24 of the l - shaped frame 21 in the lid . though each of the tubes may be replaced with a solid rod , whether of metal or plastic , all tubes shown herein are of either polyethylene ( pe ), or chlorinated polyvinylchloride ( cpvc ) or polyvinylchloride ( pvc ). the cross - tube 25 is connected to tubes 23 and 24 with right angle ells 26 and 27 in which the ends of the cross - tube are adhesively secured . the ells 26 and 27 are removably secured to the upper ends of the vertical tubes 23 and 24 respectively , with spring clips 28 so that , when the cross - tube and ells are removed , the upper ends of the vertical tubes will , when pulled downwards through the lid , pass through the spaced - apart apertures in the lid 40 , to permit disassembly of the retrieval assembly . referring further to fig3 there is shown the retrieval assembly ra with the flap 43 in the open position , preferably openable concurrently with raising of the l - shaped frame because the flap 43 is connected with a flexible connection “ fc ” to the l - shaped frame . the lid 40 is shown as being temporarily locked in position on the vertical tubes 23 and 24 , near the lower portion 29 of the l - shaped frame 21 . the spacing between the vertical tubes 23 and 24 near the upper portion 21 of the frame is such as to afford slidable movement of the upper portions of the tubes in the their respective spaced - apart openings in the lid 40 . however , the spacing between the vertical tubes 23 and 24 near the bottom of the frame is less than that in the upper portion , and so chosen as to frictionally bind the vertical tubes in their openings . for example , in an l - shaped frame adapted for use in a “ standard ” 5 gal bucket , the members are cut from 0 . 5 ″ cpvc pipe which has a nominal outside diameter of about 0 . 625 ″ ( 15 . 875 mm ). the vertical members are spaced apart such that the distance between their longitudinal center lines at the top is about 5 . 375 ″ ( 13 . 65 cm ); and the distance between their longitudinal center lines at the bottom is about 5 . 25 ″ ( 13 . 335 cm ) so that the vertical tubes are positioned in mirror - image relationship with each other . the vertical tubes 23 , 24 are spaced - apart in one half of the area of the lid , and the tubes are symmetrically disposed relative to the central access opening 43 . the lower ends of the vertical tubes 23 and 24 are connected to spaced - apart horizontal tubes 31 and 32 ( see fig5 ) between which is positioned a colander 50 having a bowl with a diameter , measured across the periphery of its opening , which diameter closely matches , but is slightly less , from about 10 mils ( 254 micrometers ) to 50 mils ( 1270 micrometers ) than the inside diameter of the bottom of the bucket , so as to be snugly slidable into the bottom of the bucket 11 . the colander 50 may be made of a non - corroding metal such as aluminum or copper , but for economy , is preferably of a synthetic resinous material , typically polyethylene , and relatively thin , preferably in the range from about 10 mils ( 254 μm ) to 50 mils ( 1270 μm ) thick , to save on weight and material , yet adequately support the weight of the bait to be kept in the bucket . the colander 50 is preferably bowl - shaped , having a depth in the range from about 2 ″ ( 5 . 08 cm )- 6 ″ ( 15 . 24 cm ) is provided with perforations 51 small enough , that is , less than 0 . 25 ″ wide , so as to preclude a bait from passing through one of the perforations . in addition , the colander is provided with three relatively larger openings . two of the three openings ( not numerically identified ) are slightly , that is , in the range from 5 mils - 10 mils wider , than the diameter of each vertical tube 23 and 24 , and the openings are spaced - apart so as to correspond to the distance between the lower portions of the vertical tubes 23 and 24 . the vertical tubes are inserted through the two openings and the colander is fixedly secured to these tubes , preferably adhesively , so as to locate the colander and have it rest between and be supported by horizontal tubes 31 and 32 , centrally in the bucket . for additional support and to strengthen the l - shaped frame 21 , the horizontal tubes 31 and 32 are interconnected by a cross - tube 33 , each end of which is securely fixed in right angle ells 34 and 35 respectively , which are also securely fixed to the ends of the horizontal tubes 31 , 32 . as a result of the lateral spacing between the lower portions of the vertical tubes 23 and 24 being less than the spacing between their upper portions , an upward thrust of the assembly caused by pulling up on the upper portion of the l - shaped frame , causes the lower portions of the tubes 23 and 24 to become wedged in the lid 40 until the bait is chosen and the l - shaped frame is forced down through the lid 40 . as mentioned hereinabove , a commercially available “ standard ” bucket 11 is tapered so that there is a difference of about 1 inch ( 2 . 54 cm ) between the diameters near the top and the bottom of the bucket . it will now be evident that , when the colander is raised into the upper portion of the bucket to be able to choose a bait , the annular space between the periphery of the colander and the inner surface of the upper portion of the bucket will be about 0 . 5 ″ ( 1 . 27 cm ), and large enough to permit a bait to jump out of the colander and into the water below the colander . to avoid losing a bait from the colander in such a manner , the periphery of the colander is provided with a continuous flexible skirt 52 fixedly secured to the periphery of the colander so that the skirt is outwardly , generally radially directed , and having a width sufficient to seal the annular space because the skirt is biased against the inner walls of the bucket . when the l - shaped frame is raised and lowered , the outwardly , generally radially projecting skirt 52 engages the cylindrical inner surface of the bucket so that the periphery of the skirt is biased against the inner surface sufficiently to seal the annular escape path of the bait . alternatively , the periphery of the skirt is so closely adjacent the inner surface of the inner wall of the container as to seal the annular escape path of the bait . by “ closely adjacent ” is meant that the width of the annular or peripheral escape path depends upon the size of the bait being used , this width being not greater than the width of the body of the shrimp or minnow being used . typically this width is less than 6 . 35 mm ( 0 . 25 in ), but may be larger if larger bait having a body width of 12 . 7 mm ( 0 . 5 in ) is to be used . when this width is reduced to zero , the periphery of the skirt engages the surface of the inner walls of the container irrespective of its cross - section . referring to fig4 there is shown a retrieval assembly ra ′ for a common , “ standard ” cylindrical 5 gal bucket ( not shown ) 11 ′ which is also commercially available . the retrieval assembly ra ′ is similar to the retrieval assembly ra described hereinabove except that the colander 50 is not provided with a skirt because the bucket is cylindrical and the diameter of the periphery of the colander which closely matches , but is slightly less than that of the inner diameter of the bucket near the bottom , also closely matches the inner diameter at the top , precluding the escape of bait . the bucket 11 ′ is provided with insulation means 13 , shown in phantom outline , such as a synthetic resinous foam , preferably polystyrene foam , which covers the exterior circumferential surface of the bucket to keep the water in the bucket cool . such insulation may also be provided for the tapered bucket 11 . alternatively , the bucket may be molded as an insulated bucket with a continuous internal skin of polymer , a continuous outer skin of polymer and foamed polymer sandwiched in between the inner and outer layers , as is well known in the art . in both ra and ra ′, the colander 50 is provided with a vertical slot 53 having a width ( measured laterally ) sufficient to slidably closely accommodate vertical valve stem 61 of a drain assembly 60 which is essentially completely contained within the bucket 11 ( see fig6 ). though a drain assembly is not essential , it is highly desirable , periodically , to drain “ stale ” water and replace it with “ fresh ” water , if the bait bucket 10 is to be used for more than several hours . the drain assembly 60 includes an on / off rotary or ball valve 62 one end of which is in open fluid communication with water in the bucket ; the other end of the ball valve is connected to one arm of a right angle ell 63 . the other arm of the ell 63 is connected to one end of a stub end 64 . the other end of the stub end 64 , which is threaded on its surface , protrudes through an aperture in the sidewall of the bucket for a distance of about 0 . 5 ″ ( 1 . 27 cm ), just sufficient to permit the threaded end to be locked against the outer surface of the bucket with a locking ring ( not shown ). vertical valve stem 61 , when rotated , opens and shuts the valve 62 . the upper end of the vertical valve stem 61 is securely fixed in a right angle ell 65 preferably extended with a stub end 66 to provide a handle for easily turning the valve from a closed to an open position , and vice versa , with one hand , leaning over only sufficiently to reach the top of the bucket . for use at night , a light 80 is preferably removably mounted on the cross - tube 25 of the l - shaped frame 21 so as to shine onto the flap 43 . when the flap is opened , the light shines directly onto the bait concentrated in the colander . the tapered bucket 11 is readied for use by filling it with water to a level in the upper portion of the bucket so as to have an acceptably large volume of water in which to hold live bait to be introduced into the bucket . the right angle ell 63 and the stub end 64 are removed from the upper end of the vertical valve stem 61 . the cross - tube 25 and right angle ells 26 and 27 are removed form the retrieval assembly ra and the vertical valve stem 61 is passed through the vertical slot 53 in the colander 50 . the vertical tubes 23 and 24 , are inserted through spaced - apart access openings for the tubes in the lid 40 , and the vertical valve stem 61 is inserted through passage 47 in the lid . with the colander 50 in the bottom of the bucket , the lid 40 is snapped shut over the periphery of the bucket 11 and the right angle ell 63 with stub end 64 is replaced and locked in place on the top of vertical valve stem 61 ; and the cross - tube 25 and right angle ells 26 , 27 are replaced and locked into place on the protruding upper ends of vertical tubes 23 and 24 . the live bait is now introduced through the central access opening 42 and the battery switched on to start the aerator and bubble air through the water . to retrieve a bait while still holding his fishing rod in one hand , the cross - tube 25 is raised with his free hand until the taper causes the vertical tubes to bind in their openings in the lid 40 bringing the colander 50 to a height above or near the surface of the water , with the bait concentrated in the colander and out of the water . the cross - tube 25 is released and the flap 43 is raised with the free hand , diametrically opposite ends of the flap coming to rest against the vertical tubes 23 and 24 . if provided with a flexible connection , such as a piece of cord or string , between the flap 43 and the upper portion of the l - shaped frame 21 , preferably by attaching one end of the cord to the cross - tube 25 , the flap 43 is concurrently raised when the cross - tube is raised . with the same free hand he chooses a bait , and with the bait still in his hand , pushes down on the cross - tube 25 to thrust the colander 50 back to the bottom of the bucket . the flap closes automatically when the l - shaped frame is lowered . having thus provided a general discussion , described the overall live bait bucket in detail and illustrated it with specific illustrations of the best mode of making and using it , it will be evident that the invention has provided an effective solution to an age - old problem . it is therefore to be understood that no undue restrictions are to be imposed by reason of the specific embodiments illustrated and discussed , and particularly that the invention is not restricted to a slavish adherence to the details set forth herein .
a container for live bait is provided with a bait retrieval assembly of readily available structural components which are combined in an unexpectedly useful manner to allow all operations to be carried out using one hand only . the container , which is closed with a substantially rigid lid , may be of arbitrary cross - section but is preferably either cylindrical or tapered . the bait retrieval assembly includes an l - shaped frame comprising a pair of vertical members and a pair of horizontal members on which a bowl - shaped colander is supported . the vertical members are reciprocable through openings in the lid . the vertical members are required to be in mirror image relationship with one another , and laterally spaced - apart so that the distance between the longitudinal center lines of the members in the bottom portion of the l is less than the distance between longitudinal center lines of the members in the upper portion of the l . the critical wedge - shaped configuration of the vertical members of the l - shaped frame allows the colander , with the bait in it , to be temporarily locked in position , above or near the surface of the water for easy access with one hand . the container is preferably provided with an internal drain assembly and an aerator .