Crustacean trap
The present application is a continuation-in-part of &#34;Crustacean Trap&#34;, Thomas P. Deaton et al, Ser. No. 642,108, filed Aug. 20, 1984. 
    
    
     BACKGROUND OF THE INVENTION 
     The present invention relates to crustacean traps, particular lobster traps, that are to be submerged in the sea, baited, and removed periodically to take out lobster that has been trapped by seeking the bait and entering an opening that facilitates their entry, but inhibits their exit. 
     Traditional wooden traps involve a lot of hand labor in their construction, which is becoming increasingly expensive. The wood takes on water when submerged and therefore the trap becomes quite heavy. The wood is also subject to rapid deterioration. 
     Plastic material or a synthetic resin material traps have been known, which avoid many of the above problems, in general. While the life of such plastic traps is expected to be greater than that of wood, their initial expense is far greater and may not permit their usage. Therefore, there is a need for a molded plastic crustacean trap that is simple to construct without much labor and inexpensive to mold, while satisfactorily performing the necessary functions of conventional traps. 
     SUMMARY OF THE INVENTION 
     It is an object of the present invention to provide a molded plastic crustacean trap that is relatively inexpensive to mold and easily assembled, in addition to satisfactorily performing the conventional functions of such a trap. 
     More particularly, the trap is molded of separate top, bottom side and end panels, which are thereafter assembled, preferably at the site after shipping, which reduces shipping costs. Assembly is relatively easy by providing vertical sliding assembly of the ends and sides, and thereafter a snap assembly of the top and bottom to hold the sides and ends rigidly in the assembled position. The funnel for facilitating ingress and inhibiting egress of crustaceans is similarly formed of molded synthetic resin or plastic materials of four panels, with two of the panels being stationary parallel side panels having integral cross beams that extend across a central opening in the top and have a snap fit at their opposite ends to the top. The remaining two sides of the funnel are adjustable side panels particularly secured adjacent their mutual top edge to the stationary panels for pivotal movement towards and away from each other, which selected pivotal position is secured by means of an arcuate array of apertures in the stationary funnel sides and apertures in the adjustable funnel sides, for the reception of a locking pin, for example a clip or a screw. 
     By generally molding only flat planar panels, the molding operation is simplified and therefore cost effective. Also, the flat panels may be shipped in a stacked relationship to provide minimum shipping space, particularly since they are easily assembled on site by untrained people who will actually use the traps. The assembly does not require any tools, since the panels are slid or snapped together, which may be facilitated by hitting them with your hand, a hammer, a brick or any other heavy object. However, it may be desirable to use some tools such as a screwdriver for securing the above-mentioned pin, or securing a wooden escape panel, but such is not necessary. If tools are used they are simple, readily available tools. Construction is simple, rugged and functional. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     Further objects, features and advantages of the present invention will become more clear from the following detailed description of a preferred embodiment, shown in the accompanying drawings, wherein: 
     FIG. 1 is a top plan view of the top panel of the crustacean trap according to the present invention; 
     FIG. 2 is a bottom plan view of the bottom panel thereof; 
     FIG. 3 is an end view of the assembled trap, particularly showing the end panel; 
     FIG. 4 is a side elevational view of the assembled trap; 
     FIG. 5 is a cross-sectional view taken along line V--V of FIGS. 3 and 4 showing a coupling in detail for the side and end panels; 
     FIG. 6 is a cross-sectional view taken along line VI--VI of FIG. 3, of only the end panel; 
     FIG. 7 is a cross-sectional view taken along line VII--VII of FIG. 3, showing the assembled joint of FIG. 5; 
     FIG. 8 is a cross-sectional view taken along line VIII--VIII of FIG. 4, showing only the side panel; 
     FIG. 9 is a cross-sectional view taken along line IX--IX in FIG. 2; 
     FIG. 10 is a cross-sectional view taken along line X--X of FIG. 2; 
     FIG. 11 is a cross-sectional view taken along line XI--XI of FIG. 1, showing the top only; 
     FIG. 12 is a side elevational view of the adjustable funnel side; 
     FIG. 13 is an end elevational view of the adjustable funnel side of FIG. 12; 
     FIG. 14 is an end elevational view of the stationary funnel side; 
     FIG. 15 is a cross-sectional view taken along line XV--XV of FIG. 14; and 
     FIG. 16 is a cross-sectional view taken along line XVI--XVI of FIG. 14. 
    
    
     DETAILED DESCRIPTION OF THE DISCLOSURE 
     Presently, it is required that crustacean traps employ an escape panel that will disintegrate during a time period that would indicate that the trap has become lost, which would then permit escape of any trapped crustaceans. It is conventional to employ a wooden panel for this purpose. With the present invention, such wooden panels may be secured by any means, such as screws. Further screws or other metal pins may be used to secure the funnel in an adjusted position. Other minor elements may be made of such or similar materials if desired. Otherwise, the trap of the present invention is molded of a plastic material, for example high density polyethylene foam. 
     A basic box structure, is constructed of a top panel shown in FIG. 1, two side panels that are preferably identical and shown in FIG. 4, two end panels that are preferably identical (only one of which may have a bait box if desired) and shown in FIG. 3, and a bottom panel shown in FIG. 2. All of the panels are preferably rectangular in shape. 
     Each side panel is provided at each of its opposed vertical edges with preferably identical coupling structure formed as a channel. As shown in FIG. 5, the channel is constructed of hook-shaped flanges, more particularly an inwardly extending flange 2, a flange 3 extending parallel to the main extent of the side panel 1, and a return flange 4. Each end panel is provided at each of its opposed vertical edges with complementary shaped channels. As shown in FIG. 5, the end panel 5 employs hook-shaped flanges comprising an inwardly extending flange 6 and a flange 7 extending along parallel to the main portion of the end panel 5. As seen, the hook-shaped flanges or channels interlock. There is a flange in addition to said flanges, more particularly an abutment flange 8 that extends vertically to a sufficient extent to abut the hook-shaped flange of the adjacent panel and to prevent horizontal disassembly or assembly of the channel. As shown, the additional flange is on the end panel 5 by way of example. Preferably, the flange 7 is molded through a mold relief aperture 9, which then requires no movable parts for the mold and no additional mold parts. The flanges for the panel 1 may be similarly molded to simplify molding procedures, as is conventionally known in general. With the above channel construction, the sides and ends of the box may be formed by vertical relative sliding movement between the end and side panels to assemble their channels or hook-shaped flanges. 
     Preferably, the safety or escape panel, crustacean removal opening, and ingress funnal are provided in the top. For this purpose, the top panel 10 is rectangular in shape and provided with a large central rectangular opening 11 that is at least sufficiently large to permit crustaceans to freely pass into the interior of the box. Two rigid funnel sides 12, which are identical and one of which is shown in FIG. 14, are provided with an integral top beam 13. At opposite ends of the beam 13, there are provided downwardly extending hook-shaped pins 14 that may be forced into complementarily shaped opposed sockets 15 of the top as shown in FIG. 1, so that the pins and sockets are snap-assembled to rigidly and stationarily hold the funnel sides 12 parallel to each other and extending downwardly into the interior of the box. The stationary funnel sides 12 are generally planar, in the plane of FIG. 14, which plane is, in the assembled position, generally parallel to the end panels 5. In such a position, the stationary funnel sides effectively divide the opening 11 in to three openings, with the center opening being the funnel opening and the two outside openings being respectively the opening for removing crustaceans from the trap and the escape opening. The escape opening may be closed with a simple sheet of wood (not shown) and for this purpose holes 16 may be drilled or molded for receiving screws. The opening for removal of crustaceans may be temporarily closed by means of a hinged door (not shown), which may be similarly molded of plastic, constructed of wood and hinged to the top, or constructed of wire, or any other material, and again an aperture or hole 16 is provided for receiving a screw to secure such door. The door and escape panel may be of conventional construction; they have not been shown. Also, the construction of the pin and socket type snap assembly joints will not be discussed in detail since they are easily viewed in the drawings and per se of conventional construction. 
     Two opposed generally parallel molded adjustable funnel sides 17 are preferably of identical construction, with one being shown in FIGS. 12 and 13. Each of the stationary funnel sides 12 is provided with two keyhole shaped apertures 18. Each of the adjustable funnel sides has opposed outwardly extending stub shafts 19 with a key 20 on its outer end complementary to the keyhole shaped aperture 18. In assembly, the stub shafts 19 and their adjustable funnel sides 17 are rotated to align the key 20 with the complementary shaped keyhole aperture 18 of the adjacent stationary funnel sides and then the funnel sides are axially moved together to assemble the stub shafts within the keyhole shaped apertures, which assembly position is preferably with the extent of the adjustable funnel sides being horizontal, that is rotationally removed from the normal position of the funnel sides to be discussed below. After the key 20 passes through the keyhole shaped aperture completely, the adjustable funnel sides are rotated downwardly. Thereafter, the assembled funnel sides 12, 17 are inserted as a unit into the opening 11 and the pins 14 of the cross-beams 13 are snap assembled into the sockets 15 of the top panel 10. In this manner, the adjustable funnel sides 17 are pivotally connected adjacent the top panel about parallel axes that are perpendicular to the stationary funnel sides 12. The adjustable funnel sides extend between and generally perpendicular to the stationary funnel sides so that the lower ends of the funnel sides are adjacent to each other within the box. Thereby, the adjustable funnel sides may be pivoted towards and away from each other to form an adjustable size funnel for guiding the ingress of crustaceans and inhibiting the egress of crustaceans. A plurality of through apertures 21 are provided in at least one of the stationary funnel sides and preferably both of them in an arcuate array concentric with respect to the pivot axis of the adjacent keyhole shaped aperture 18. Each adjustable funnel side 17 has an aperture 22 on its opposed vertical edges spaced from the pivot axis the same distance as the corresponding arcuate array of apertures in the adjacent stationary funnel side for a selective register with the apertures in the adjacent array. A pin, for example a screw 23 is selectively inserted between aligned apertures in 21, 22 in the stationary funnel side and adjustable funnel side for securing the adjusted position of the funnel. 
     The top panel and bottom pannel are similarly secured to the side and end panels. Each of the side, end, bottom and top panels have complementary pins and sockets that are in complementary pairs between the bottom edge of the top panel and the top periphery of the assembled side and end panels, and between the top edge of the bottom panel and the bottom periphery of the assembled side and end panels. Such pins and sockets 24, 25 respectively are similar or identical to the pins 14 and sockets 15 previously described. They may also be of equivalent conventional structure. In this manner, the top panel and the bottom panel are securely attached and assembled to the side and end panels. This will also prevent subsequent relative vertical motion between the side and end panels to thereby prevent disassembly of the interlocking channels of the side and end panels. The sockets effectively form vertically extending connection apertures, extending downwardly for the top panel and upwardly for the bottom panel. These connection apertures preferably have at least one cantilevered tab 26 extending into the connection aperture. Details of this construction are shown in cross-section with respect to the bottom panel 27. 
     Molded into the end panel 5, or at least one end panel, may be a post 28 to receive a line for retrieving the box. A standard crab pot bail box (not shown) can be mechanically fastened to the side of the stationary funnel. 
     Instead of a screw 23, a stainless steel wire may be inserted and bent to retain it during assembly of the box to eliminate the use of tools and simplify the structure. 
     The various panels are preferably made with a plurality of openings, to facilitate the passage of water through the trap, but not sufficiently large to permit escape of crustaceans. Ribbing and buttresses may be provided as is known in plastic molding for strengthening purposes. 
     The operation, advantages and functions of the preferred embodiment have been set forth along with illustrated variations. Further embodiments, modifications and variations are contemplated in addition to the advantageous details, all in accordance with the spirit and scope of the following claims.