Puzzle with Attachable and Releasable Pieces

Abstract

The puzzle with attachable and releasable pieces includes shaped puzzle pieces and a two-part base, which includes a front base section and a back baseplate. The puzzle pieces have rear-facing engaging mechanisms that are attachable to forward-facing male studs carried by the back baseplate. The puzzle pieces each have a particular outer shape determining placement. The puzzle may be stored with the puzzle pieces engaged to the back baseplate, but may be later released for repeat play by using a provided puzzle release mechanism.

Claims

1. A puzzle unit, comprising: a two-part base comprising: a back baseplate having a front surface and a back surface with multiple baseplate male studs protruding forwardly from said front surface; and a front base section attached via complementary front-to-back attachment mechanisms to said back baseplate; said front base section comprising an inner surface, an outer surface, and an outer frame supporting an interior flat perforated section having multiple perforations defined by perforation edges; wherein the positioning of said multiple perforations has a correspondence to the positioning of said multiple baseplate male studs; wherein said outer frame comprises side flanges having lever-accommodating openings on two opposing lateral sides; a template comprising a flat sheet of material having upper and opposing lower broad flat surfaces extending laterally to opposing perimeter lateral sides and extending longitudinally to opposing perimeter longitudinal sides; wherein said template further comprises at least one puzzle piece-receiving hole edge extending through said flat sheet of material to define a puzzle piece-receiving hole; wherein said puzzle piece-receiving hole edge has a particular shape; at least one puzzle piece having an outer shape that corresponds to said particular shape of said puzzle piece-receiving hole edge; wherein said at least one puzzle piece has at least one rear-facing engaging mechanism configured to engage with at least one of said multiple baseplate male studs; and two opposing puzzle releasing mechanisms, each of said puzzle releasing mechanisms function as a lever and comprise an inner engagement portion configured to engage with said inner surface of said front base section and an outer handle portion extending outwardly through said lever-accommodating openings.

2. The puzzle unit as recited in claim 1, wherein at least two of said opposing perimeter lateral sides and opposing perimeter longitudinal sides are configured with side projections extending outwardly; and wherein said outer frame of said front base section is configured with at least two projection-accommodating receptacles; each of said projection-accommodating receptacles being sized and configured to allow manual insertion of said side projections into said projection-accommodating receptacles.

3. The puzzle unit as recited in claim 1, wherein said two opposing puzzle releasing mechanisms function to increase the distance between said front base section and said back baseplate to move said front base section and said back baseplate to a releasable position in which said at least one rear-facing engaging mechanism of said at least one puzzle piece is disengaged from said at least one of said multiple baseplate male studs.

4. The puzzle unit as recited in claim 1, wherein said two opposing puzzle releasing mechanisms function to decrease the distance between said front base section and said back baseplate to move said front base section and back baseplate to an attachable position in which said at least one rear-facing engaging mechanism of said at least one puzzle piece is manually engageable with said at least one of said baseplate male studs.

5. The puzzle unit as recited in claim 4, wherein, when said front base section and said back baseplate are in said attachable position, interstitial portions of said interior flat perforated section are positioned adjacent to said front surface of said back baseplate.

6. The puzzle unit as recited in claim 1, wherein said multiple perforations defined by perforation edges are aligned with said multiple baseplate male studs.

7. The puzzle unit as recited in claim 1, wherein said complementary front-to-back attachment mechanisms allow said front base section to move a limited distance from said back baseplate.

8. The puzzle unit as recited in claim 1, wherein said complementary front-to-back attachment mechanisms comprise a slide-able shaft male connector and a slide-able receptacle female connector.

9. The puzzle unit as recited in claim 1, wherein each of said two opposing puzzle releasing mechanisms are pivotally attached to said back baseplate.

10. A puzzle unit, comprising: a two-part base comprising: a back baseplate having a front surface and a back surface with multiple baseplate male studs extending forwardly from said front surface; and a front base section attachable to said back baseplate comprising an inner surface, an outer surface, and an outer frame supporting an interior flat perforated section configured with multiple perforations defined by perforation edges and having interstitial flat portions between said perforation edges; wherein said multiple perforations defined by perforation edges are aligned with said multiple baseplate male studs; wherein said outer frame comprises side flanges having lever-accommodating openings on two opposing lateral sides; wherein said outer frame of said front base section is configured with at least two projection-accommodating receptacles configured as slots in said outer frame; a template comprising a flat sheet of material having upper and opposing lower broad flat sides, opposing perimeter lateral sides, and opposing perimeter longitudinal sides; wherein at least two of said opposing perimeter lateral sides and opposing perimeter longitudinal sides are configured with side projections extending outwardly that are sized and configured to be manually insertable into one of said projection-accommodating receptacles; wherein said template further comprises at least one puzzle piece-receiving hole defined by puzzle piece-receiving hole edges extending through said flat sheet of material; wherein said puzzle piece-receiving hole edges have a particular shape; at least one puzzle piece having an outer shape that corresponds to said particular shape of said puzzle piece-receiving hole edges; wherein said at least one puzzle piece has at least one rear-facing engaging mechanism configured to engage with at least one of said multiple baseplate male studs; and two opposing puzzle releasing mechanisms functioning as levers, each of said puzzle releasing mechanism comprising an inner engagement portion configured to engage with said inner surface of said front base section and an outer handle portion extending outwardly through said lever-accommodating openings; wherein each of said two opposing puzzle releasing mechanisms are pivotally attached to said back baseplate.

11. The puzzle unit as recited in claim 10, wherein said two opposing puzzle releasing mechanisms function to increase the distance between said front base section and said back baseplate to move said front base section and said back baseplate to a releasable position in which said at least one rear-facing engaging mechanism of said at least one puzzle piece is disengaged from said at least one of said multiple baseplate male studs.

12. The puzzle unit as recited in claim 11, wherein said two opposing puzzle releasing mechanisms function to decrease the distance between said front base section and said back baseplate to move said front base section and back baseplate to an attachable position in which said at least one rear-facing engaging mechanism of said at least one puzzle piece is manually engageable with said at least one of said multiple baseplate male studs.

13. The puzzle unit as recited in claim 12, wherein, when said front base section and said back baseplate are in said attachable position, portions of said interior flat perforated section are interposed between said multiple baseplate male studs.

14. The puzzle unit as recited in claim 13, wherein said portions of said interior flat perforated section are positioned adjacent to said front surface of said back baseplate.

15. A puzzle unit, comprising: a two-part puzzle base comprising: a back baseplate having a front surface and a back surface with multiple baseplate male studs protruding forwardly from said front surface; and a front base section attached via complementary front-to-back attachment mechanisms to said back baseplate; said front base section comprising an inner surface, an outer surface, and an outer frame supporting an interior flat perforated section having multiple perforations defined by perforation edges; wherein the positioning of said multiple perforations has a correspondence to the positioning of said multiple baseplate male studs; wherein said outer frame comprises side flanges having lever-accommodating openings on two opposing lateral sides; a template comprising a flat sheet of material having upper and opposing lower broad flat surfaces extending laterally and extending longitudinally to template perimeter sides; wherein said template further comprises at least one puzzle piece-receiving hole edge extending through said flat sheet of material to define a puzzle piece-receiving hole; wherein said puzzle piece-receiving hole edge has a particular shape; at least one puzzle piece having an outer shape that corresponds to said particular shape of said puzzle piece-receiving hole edge; wherein said at least one puzzle piece has at least one rear-facing engaging mechanism configured to engage with at least one of said multiple baseplate male studs; and two opposing puzzle releasing mechanisms, each of said puzzle releasing mechanisms function as a lever and comprise an inner engagement portion configured to engage with said inner surface of said front base section and an outer handle portion extending outwardly through said lever-accommodating openings; wherein each of said two opposing puzzle releasing mechanisms are pivotally attached to said back baseplate; and wherein said two opposing puzzle releasing mechanisms function to increase and to decrease the distance between said front base section and said back baseplate to move said front base section and said back baseplate.

16. The puzzle unit as recited in claim 15, wherein at least two of said perimeter sides are configured with side projections extending outwardly; and wherein said outer frame of said front base section is configured with at least two projection-accommodating receptacles; each of said projection-accommodating receptacles being sized and configured to allow manual insertion of said side projections into said projection-accommodating receptacles.

17. The puzzle unit as recited in claim 15, wherein, when said two opposing puzzle releasing mechanisms function to increase the distance between said front base section and said back baseplate to move said front base section and said back baseplate to a releasable position, said at least one rear-facing engaging mechanism of said at least one puzzle piece is disengaged from said at least one of said multiple baseplate male studs.

18. The puzzle unit as recited in claim 15, wherein, when said two opposing puzzle releasing mechanisms function to decrease the distance between said front base section and said back baseplate to move said front base section and back baseplate to an attachable position, said at least one rear-facing engaging mechanism of said at least one puzzle piece is manually engageable with said at least one of said baseplate male studs.

19. The puzzle unit as recited in claim 15, said complementary front-to-back attachment mechanisms comprise a slide-able shaft male connector and a slide-able receptacle female connector.

20. The puzzle unit as recited in claim 15, wherein said multiple perforations defined by perforation edges are aligned with said multiple baseplate male studs.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0014] The preferred embodiments of the invention will hereinafter be described in conjunction with the appended drawings, provided to illustrate and not to limit the invention, where like designations denote like elements.

[0015] FIG. 1 is an exploded front perspective view of the first embodiment of the puzzle with attachable and releasable pieces of the present invention, showing a first pre-determined design.

[0016] FIG. 2 is a front perspective view of the assembled first embodiment of the inventive puzzle.

[0017] FIG. 3 is a top view of the inventive puzzle.

[0018] FIG. 4 is a front view of the first embodiment of the inventive puzzle.

[0019] FIG. 5 is a view taking along the viewing line 5 of FIG. 4.

[0020] FIG. 6 is an exploded rear perspective view of the first embodiment of the inventive puzzle.

[0021] FIG. 7 is a front perspective view of the assembled second embodiment of the inventive puzzle, showing a second pre-determined design.

[0022] FIG. 8 is a front perspective view of the second embodiment of the inventive puzzle that is ready to assemble.

[0023] FIG. 9 is a front exploded view of the second embodiment of the inventive puzzle.

[0024] FIG. 10 is a rear exploded view of the second embodiment of the inventive puzzle.

[0025] FIGS. 11-15 are front, lower side, right side, upper side, and left side views, respectively, of the second embodiment of the inventive puzzle.

[0026] FIG. 16 is a cut view taken along the line 16 in FIG. 18 showing the lever rotated into the releasable position, thereby increasing the distance between the front base section and the back baseplate, with a single block shown as released.

[0027] FIG. 17 is a cut view taken along the line 17 in FIG. 18 showing the lever in the resting position, thereby allowing the front base section to be in the attachable position with a single block shown attached.

[0028] FIG. 18 is a back view of the second embodiment of the inventive puzzle.

[0029] FIG. 19 is a back perspective view of the inventive puzzle.

[0030] FIGS. 20-24 are front perspective views of the inventive puzzle, showing, respectively, a third, fourth, fifth, sixth, and seventh pre-determined design.

[0031] Like reference numerals refer to like parts throughout the several views of the drawings.

DETAILED DESCRIPTION OF THE INVENTION

[0032] Shown throughout the figures, the present invention is directed toward a puzzle with attachable and releasable pieces, which is generally referred to as puzzle unit 100. The inventive puzzle unit 100 provides the skill enhancement opportunities, play value, and educational value of a standard puzzle for young children, yet provides for convenient attachment of the puzzle pieces 101 for storage and/or display and also provides easy releasing of the puzzle pieces 101 for repeat play. When in the storage/display mode, the pieces 101 will not fall out if the puzzle unit 100 is turned upside down, turned on one of its sides, or stored or displayed vertically.

[0033] The inventive puzzle unit 100 includes at least one puzzle piece 101 (typically multiple pieces 101), a two-part base 120, 130, and a puzzle release mechanism 105. The two-part base comprises a front base section 120 and a studded back baseplate 130, which are attached by complementary front-to-back attachment mechanisms that allow the distance between the front base section 120 and back baseplate 130 to be increased or decreased to a limited extent.

[0034] In the first embodiment of the invention the puzzle release mechanism 105 comprises a set of manually manipulatable tabs firmly attached to the back baseplate 130 that lowers the back baseplate 130, and in the second embodiment it comprises a set of manually articulated levers that raise the front base section 120. In both cases, the puzzle release mechanism 105 serves to increase the distance between the front base section 120 and the back baseplate 130, thereby moving the front base section 120 and back baseplate 130 into the releasable position and releasing the attached puzzle pieces 101 from the back baseplate 130.

[0035] The back baseplate 130 comprises a flat, rigid sheet or foundation 131 (FIG. 5) arranged with a number of upwardly-protruding coupling elements, projections, pegs, or the like, referred to as male studs 133. Each of the male studs 133 is configured to be frictionally engaged with an engagement mechanism 103 disposed on the rear of a puzzle piece 101. The male coupling studs 133 are preferably arranged on the same side of the back baseplate foundation 131 in equidistant rows, but other arrangements can also be utilized.

[0036] The rear portion of each puzzle piece 101 is configured with one or more rear-facing engagement mechanisms 103 sized and configured to couple to, or be interlocked with, the complementary forward-facing male coupling studs 133 on the front surface of the studded back baseplate portion 130. The puzzle piece's rear-facing engagement mechanisms 103 may be in any of a variety of shapes. For example, the engagement mechanisms 103 may be open female slots, may be cylindrical 113 with inner ribs or ridges 151 (FIGS. 6, 17), may be formed in shapes allowing portions of plastic to frictionally engage with one or more portions of the outside of the male coupling studs 133, may be cylinders having an outer circumference equal to the diagonal distance between two male studs 133 to allow four outer portions of the cylinder to frictionally engage with four male studs 133, or may be otherwise designed to frictionally connect with or onto the male coupling studs 133.

[0037] The front of each puzzle piece 101 is a puzzle piece graphic front surface 106 (FIG. 2). The graphic front surface 106 preferably carries a decorative presentation that provides artistic interest, amusement, and/or informational content. For example, in FIG. 2, the front surface 106 can be a graphical presentation to show the letter B, to focus the child on the shape of the letter B, to amuse the child with a silly graphic relating to the letter, to enhance the interest of the child, or to otherwise enhance the appearance of the front of the puzzle piece 101. The graphical presentation may be applied to the front of the puzzle piece in any manner known in the art, including printing, imprinting, embossing, embellishing, painting, adherence of a label or decal, or other application means, or it may optionally be incorporated into the molded puzzle piece itself.

[0038] The puzzle pieces 101 have shaped edges 104. The pre-determined shape of the outer shaped edges 104 corresponds with a correlating pre-determined shape of a puzzle piece-receiving hole 129 and thus determines placement of the puzzle piece 101. In the first embodiment of FIGS. 1-6, the front base section 120 is configured with puzzle piece-receiving holes 129 defined by cutout edges 122 having a shape corresponding to the shape of the shaped edges 104. In the second embodiment of FIGS. 7-24, a template 110 is configured with puzzle piece-receiving holes 129 defined by cutout edges 112 shaped to receive the puzzle pieces 101.

[0039] The engagement of the puzzle piece's engagement mechanisms 103 to the forwardly-extending male studs 133 of the back baseplate attaches the puzzle pieces 101 to the back baseplate 130. To disengage the puzzle pieces 101 and release them from the back baseplate 130, the front base section 120 is moved from an attachable position to a releasable position. Best seen in FIG. 17, in the attachable position, the front base section 120 is nearer the back baseplate portion 130 than in the releasable position seen in FIG. 16.

[0040] Turning to the first embodiment of FIGS. 1-6, the front face 121 of the front base section 120 is configured with one or, preferably, multiple, puzzle piece-receiving holes 129 defined by cutout edges 122 with the edges 122 extending the depth of the front base section 120 from an outer edge at the front face 121 to an inner or rear edge at lip 128 and including an interior wall 127. A particular puzzle piece-receiving hole 129 having a particular cutout edge 122 shape correlates in shape to the outer shape 104 of a particular corresponding puzzle piece 101. In this embodiment, each receiving hole 129 has a flange or lip 128 extending slightly inwardly at the back edge of the interior wall 127 into the receiving hole 129.

[0041] When the puzzle piece 101 is fitted into its corresponding hole 129, the lip 128 of the front base section 120 projects inwardly below the back outer edge of the puzzle piece 101. The lip 128 is interposed between the outer edge of the puzzle piece outer edge and the front surface of the back baseplate 130.

[0042] The puzzle piece 101 fits within the corresponding hole 129, whether or not the puzzle piece's engagement mechanism(s) 103 is engaged with the back baseplate's male stud(s) 133. The puzzle piece 101 will fit into the receiving hole 129 in the manner of a typical non-attachable puzzle piece, which may provide a method of play that is particularly suited to a young child who cannot, or does not desire to, attach the puzzle pieces 101 to the back baseplate 130. However, the option for attachment remains. For example, when an adult chooses to store the inventive puzzle unit 100, the puzzle piece 101 can merely be pushed deeper into the receiving hole 129 with its one or multiple rear-facing engagement mechanisms 103 engaging with one or multiple ones of the baseplate forward-facing engagement mechanisms 133.

[0043] In the first embodiment, the puzzle release mechanism 105 is a set of tabs that may be fixedly attached to the studded back baseplate 130 or that may be molded integrally with a plastic studded back baseplate 130.

[0044] The front base section 120 includes a generally flat front middle surface 121 that extends outwardly in four directions toward side corners 123 (FIG. 5). Side corners 123 are integrally formed with (or attached to) side flange 126. Side flange 126 extends around the exterior of the four sides (two lateral and two longitudinal sides) of the toy; two opposing sides (shown as lateral sides) of side flange 126 are configured with tab holes defined by tab hole edges 124.

[0045] The set of tabs 105 are disposed on the outer sides of the back baseplate 130 and extend outwardly through the tab holes defined by tab hole edges 124 through the side flange 126 of the front base section 120; they extend a sufficient distance past the tab hole edges 124 to be manually gripped. Sufficient interior clearance within the side flange 126 is provided for the back baseplate 130 to be pushed downward, but because the base flange 138 extends outwardly past the bottom of the back baseplate 130 during this procedure, the puzzle unit must be lifted off any hard surface, such as a table or floor.

[0046] In this first embodiment, after removing the puzzle unit from any hard, flat surface, the puzzle pieces 101 are released by grasping the back of side flange 126 and pressing down on the tabs 105 towards the bottom of the unit, which moves the back baseplate 130 farther from the front base section 120 into the releasable position. The puzzle pieces 101 release from the back baseplate 130 as they are forced forward by the lip 128 at the back of the interior wall 127 of the front base section 120 as the distance between the front base section 120 and the back baseplate 130 increase, which is designated the releasable position. The puzzle pieces 101 will fall out with gravity as the back baseplate 130 pulls away from the puzzle pieces 101 captured by the front base section 120.

[0047] In this embodiment, when the puzzle unit is placed back onto a hard surface, such as a table or floor, the baseplate flange 138 touches the hard surface and pushes the studded back baseplate 130 upwards, reducing the distance between the front base section and the back baseplate. The lifting of the studded back baseplate 130 stops when the tabs 105 reach the top of the tab hole edges 124 (FIG. 5) with the base flange 138 resting on the hard surface. In this configuration, the back baseplate 130 has moved nearer to the front base section 120 and is in the attachable position. The puzzle unit 100 is now in the position in which the puzzle pieces 101 can be placed into the puzzle piece-receiving hole 129 and/or can be snapped down to the back baseplate 130 once again.

[0048] To use the first embodiment, a child attempts to insert the correct puzzle pieces 101 into the corresponding shaped hole 129 defined by cutouts 122 of the front base section 120. The particular puzzle piece 101 that matches a particular hole 129 is then inserted into the corresponding hole 129 with the outer edges of the puzzle piece 101 abutting the inner wall 127 of the shaped hole 129. This play pattern may be continued until all puzzle pieces 101 have been matched to their corresponding holes 129.

[0049] Typically, a young child would be likely to play with the puzzle pieces and insert them into the proper puzzle piece-receiving hole 129 defined by cutout edge 122 without pushing the pieces 101 down firmly enough to engage the puzzle piece's engagement mechanisms 103 with the back baseplate's male studs 133. If the child wants to play longer, the puzzle unit can be turned upside down and the pieces 101 will typically fall out and be available for more play.

[0050] When the child finishes playing and the adult caregiver wishes to store the puzzle unit 100, the adult caregiver presses on the top surface 106 (FIG. 2) of each puzzle piece 101 to push each of the pieces 101 further downward into the correspondingly-shaped hole 129 to engage the puzzle piece's engagement mechanisms 103 with the male studs 133 (unless the child has already engaged them). The puzzle unit 100 may then be stored with the pieces 101 firmly attached.

[0051] After storage, when the child wishes to play with the puzzle unit 100 again, the adult caregiver picks up the entire unit and presses down on the side tabs toward the bottom of the unit. At that point the baseplate flange 138 extends below the bottom of the side flange 126 (FIG. 5) of the front base section 120, and the distance between the top of the front base section and the back baseplate 130 increases to reach the releasable position. The back baseplate 130 is separated from the back of the puzzle pieces, but the lip 128 prevents the puzzle pieces 101 from following the back baseplate 130 downward. The puzzle pieces 101, therefore, fall out. Then the puzzle unit 100 is placed on a hard surface and the baseplate flange 138 lifts the internal back baseplate 130; the lifting of the back baseplate 130 is stopped when the tabs 105 reach the top edge 124 of the tab holes of the front base section 120. At this point, the child can again play with the puzzle, and the pieces 101 can be re-attached to the inner baseplate when desired.

[0052] The second embodiment of the invention is shown in FIGS. 7-24 with several pre-determined exemplary designs provided. The second embodiment differs from the first embodiment at least in the inclusion of a template 110, in the inclusion of perforations in the front base section 120, and in the method and mechanism to move the front base section 120 and back baseplate 130 from the attachable position to the releasable position and vice versa.

[0053] In the second embodiment, a template 110 is provided that can preferably be removably attached to the front of the front base section 120 (such as via connection mechanism 119 (FIG. 9) that connects with front base section's complementary connection mechanism 153), but can optionally be permanently attached. Preferably the template 110 having a first design can be attached and used to indicate the proper corresponding puzzle pieces 101 for a first pre-determined design pattern, and then the template 110 of the first design can be removed and replaced with a template 110 having a second design to add play value, increase versatility, and enhance the usefulness of the toy puzzle unit 100.

[0054] The template 110 is a flat, relatively thin sheet of material with upper or front and lower or back broad flat sides, opposing perimeter lateral sides and opposing perimeter longitudinal sides. The template may be formed of known materials, such as laminated or un-laminated paperboard, cardboard, plastic, layered composites, or the like. The template 110 upper surface preferably carries a decorative graphical presentation to add visual interest. The template opposing lateral sides are preferably configured with a connection mechanism 119 in the form of outwardly extending tabs which are insertable into complementary slots of the connection mechanism 153.

[0055] The template 110 also includes puzzle piece-receiving holes 129 defined by cutout edges 112. Each puzzle piece-receiving hole 129 is shaped to receive a corresponding-shaped puzzle piece 101. The cutout edges 112 extend from the front surface through the body of the thin sheet to the back surface.

[0056] The front base section 120 of the second embodiment has an interior flat perforated section 125 (FIG. 9) surrounded and supported by an outer frame 155. The outer frame 155 includes side flanges 156 forming the sides of the toy, as shown. Side flanges 156 reach from the outer corners downwardly to end at flange edge 159. Various decorative elements may be incorporated into, or printed onto, the outer frame 155, such as the decorative wave 182 (FIG. 20), a logo, instructions, or the like.

[0057] The flat interior perforated section 125 is configured with multiple perforations 140 defined by perforation edges 141 with flat, interstitial non-perforated portions (labeled with reference number 125 in FIGS. 16-17) interspersed between the perforations 140. The layout of the perforations 140 corresponds to the layout of the back baseplate's rear-facing engagement mechanism (shown as male studs 133). In the exemplary aspect shown in FIGS. 16-17, the male coupling studs 133 are aligned with the puzzle piece's rear-facing engagement mechanisms 103; thus, in this exemplary aspect, the perforations 140 are aligned with the male studs 133 with non-perforated interstitial portions aligned with the area of the baseplate between the studs. However, the particular correspondence is dependent upon the particular type of the puzzle piece-to-baseplate complementary coupling mechanism utilized. This is because other sets of forward-facing engagement mechanisms 133 and rear-facing engagement mechanisms 103 are within the scope of the invention, and the use of a different complementary set may necessitate a different correspondence.

[0058] The puzzle pieces 101 are constructed as in the first embodiment with a puzzle piece graphic-embellished front surface 106 (FIG. 2), outer shaped edges 104 that are pre-determined to correspond to a shape of a puzzle piece-receiving hole 129, and one or more rear-facing engagement mechanisms 103 sized and configured to couple to, or be interlocked with, the complementary forward-facing male coupling studs 133 on the front surface of the studded back baseplate portion 130.

[0059] In the second embodiment of the invention, the back baseplate 130 is configured with complementary front-to-back attachment mechanisms that allow limited movement, shown here as slide-able female connectors 134 (FIG. 9) that coordinate with complementary connectors shown here as slide-able shaft male connectors 144 (FIG. 10) disposed on the back of the front base portion. A stop device limits the retraction of the slide-able shaft male connector from the slide-able receptacle female connector, thus limiting the sliding distance. The slide-able female connector 134 may be a tube or open cylinder sized to receive the slide-able shaft male connector 144. The complementary back and front base connectors 134, 144 enable the secure attachment of the back baseplate 130 to the front base portion 120 while allowing for the limited amount of movement necessary for the disengagement of the puzzle pieces.

[0060] The puzzle release mechanism 105 of the second embodiment is a lever, best seen in FIGS. 16-17. The lever-type puzzle release mechanism 105 has an inner engagement portion 108 configured to engage with the front base section 120 and has an outer handle portion 109 that can be manually pushed upward or downward. The lever puzzle release mechanism 105 is shown as being pivotally connected with its fulcrum on the back baseplate 130. When the outer handle portion 109 of the lever puzzle release mechanism 105 is pushed downward, as in FIG. 16, the front base section 120 is moved upward away from the back baseplate 130 and the distance between the front base section 120 and back baseplate 130 is increased, causing the puzzle pieces 101 to be forcibly released. When the handle portion 109 is released to move back upward, the force of gravity (or, optionally, a spring system between the front base section 120 and back baseplate 130 could be provided for more secure positioning) causes the distance between the front base section 120 and back baseplate 130 to decrease, allowing the puzzle pieces 101 to be attached. In this attachable position, as seen in FIG. 17, the interstitial solid areas amongst the perforations of the interior flat surface 125 of the base front section 120 are again positioned amongst the back baseplate's male coupling studs 133.

[0061] As seen in FIG. 8, a puzzle piece 101 of a particular shape can be inserted into the puzzle piece-receiving hole 129 of the corresponding particular shape. The forward-facing male coupling studs 133 of the back baseplate can be seen through the puzzle piece-receiving holes 129.

[0062] Preferably, the puzzle pieces 101, back baseplate 130, and front base portion 120 are formed of plastic material or are formed substantially of plastic material.

[0063] In some aspects, the back baseplate 130 may include a back baseplate reinforcement 139 such as on the underside 149 of back baseplate foundation 131 as seen in FIG. 18, or it may not require visually detectable reinforcement, as seen in FIG. 6. If included for sturdiness or robustness, the back baseplate reinforcement 139 can be area of thicker plastic forming a strengthening or underpinning structure, which is formed integrally when molding the back baseplate 130. The back baseplate reinforcement 139 may be created in any of various shapes or patterns, such as a honeycomb, grid (as shown), striated pattern, or may merely be a strengthening of the back baseplate 130 material.

[0064] The invention illustratively disclosed herein suitably may be practiced in the absence of any element which is not specifically disclosed herein. The mirror image of each design is also disclosed.

[0065] Since many modifications, variations, and changes in detail can be made to the described preferred embodiments of the invention, it is intended that all matters in the foregoing description and shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense. Thus, the scope of the invention should be determined by the appended claims and their legal equivalents.