Patent Publication Number: US-7713175-B2

Title: Infant activity systems

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     The present application is related to and claims priority from prior provisional application Ser. No. 60/669,540, filed Apr. 7, 2005, entitled “INFANT ACTIVITY SYSTEMS”, and is related to and claims priority from prior provisional application Ser. No. 60/713,286, filed Aug. 31, 2005, entitled “INFANT ACTIVITY SYSTEMS”, the contents of both of which are incorporated herein by this reference and are not admitted to be prior art with respect to the present invention by the mention in this cross-reference section. 
    
    
     BACKGROUND 
     This invention relates to providing a system for an improved walking training system for infants. More particularly, this invention relates to providing a system, for infant exercise and entertainment, which provides opportunities for walking training of infants learning to walk. 
     Frequently, children learn to walk by “furniture surfing” (e.g., infants who are just starting to stand, holding onto sofas and coffee tables as they navigate their way around a living room). At least in part, this may be due to the lack of an alternative method. Obviously, “furniture surfing” represents a risk to the infant, e.g., in the event the infant should fall against a sharp corner or edge. 
     A primary alternative to “furniture surfing” is “parent surfing”, which involves the active participation of the adult in holding the infant&#39;s hands while the infant attempts to walk. This method is often short-lived due to adult fatigue. 
     Today, there are few readily available alternatives which provide the functional combination of walking training, exercise and entertainment. Generally, the currently readily available alternatives fail to provide at least one of the desired functions and often have significant safety limitations, even with parental supervision. 
     Heretofore, other solutions have tended to be heavy, expensive, complicated, difficult to set up, difficult to manufacture, and costly to manufacture. Additionally, safety-related features have been limited. 
     Therefore, a need exists for a system which is safe, inexpensive and easily manufactured, and which provides infant walking training in combination with other functions. 
     OBJECTS AND FEATURES OF THE INVENTION 
     A primary object and feature of the present invention is to provide a system for infant walking training. 
     It is a further primary object and feature of the present invention to provide such a system for promoting infant exercise. 
     It is another primary object and feature of the present invention to provide such a system for promoting infant entertainment. 
     It is an additional primary object and feature of the present invention to provide such a system for promoting infant walking training which is safe for infants. 
     It is another primary object and feature of the present invention to provide such a system adaptable to the training of older children and patient physical therapy. 
     It is yet another primary object and feature of the present invention to provide such a system which is inexpensive. 
     It is still a further primary object and feature of the present invention to provide such a system that is easily assembled, disassembled, transported and stored. 
     Another primary object and feature of the present invention is to provide such a system that is lightweight. 
     It is another primary object and feature of the present invention to provide such a system that is easily and inexpensively manufactured. 
     Other objects and features of this invention will become apparent with reference to the following descriptions. 
     SUMMARY OF THE INVENTION 
     In accordance with a preferred embodiment hereof, this invention provides an infant activity system, relating to providing unrestricted learning-to-walk oriented play activities to at least one infant, comprising: upper polygonal peripheral graspable bar means for grasping by the at least one infant; lower polygonal peripheral support means for supporting such upper polygonal peripheral graspable bar means in at least one fixed elevation position; and geometry means for permitting essentially free movement by the at least one infant throughout such infant activity system. Moreover, it provides such an infant activity system, wherein such geometry means comprises tilt-prevention means for essentially preventing tilting of such infant activity system when the at least one infant applies forces to such upper polygonal peripheral graspable bar means. Additionally, it provides such an infant activity system, wherein such lower polygonal peripheral support means comprises lower polygonal peripheral base means surrounding at least one base area for providing at least one lower polygonal peripheral base for such infant activity system. Also, it provides such an infant activity system, wherein such geometry means comprises tilt-prevention means for essentially preventing tilting of such infant activity system when the at least one infant applies forces to such upper polygonal peripheral graspable bar means. In addition, it provides such an infant activity system, wherein such tilt-prevention means comprises geometric retention means for geometrically retaining at least one center of gravity of such infant activity system within such at least one base area when the at least one infant applies forces to such upper polygonal peripheral graspable bar means. And, it provides such an infant activity system, further comprising attacher means for attaching such upper polygonal peripheral graspable bar means to such lower polygonal peripheral support means. 
     In accordance with another preferred embodiment hereof, this invention provides an infant activity system relating to providing unrestricted activities to at least one infant comprising in combination: at least one upper polygonal peripheral graspable bar adapted to be grasped by the at least one infant; at least one lower polygonal peripheral support adapted to support such at least one upper polygonal peripheral graspable bar in at least one fixed elevation position; and at least one geometric arrangement adapted to allow essentially free movement by the at least one infant throughout such infant activity system. Further, it provides such an infant activity system, wherein such at least one geometric arrangement comprises at least one tilt-prevention arrangement adapted to essentially prevent tilting of such infant activity system when the at least one infant applies forces to such at least one upper polygonal peripheral graspable bar. Even further, it provides such an infant activity system, wherein such lower polygonal peripheral support comprises: at least one lower polygonal peripheral base surrounding at least one base area; wherein at least one geometric relationship between such at least one lower polygonal peripheral base and such at least one upper polygonal peripheral graspable bar allows retention of at least one center of gravity of such infant activity system within such at least one base area when the at least one infant applies forces to such upper polygonal peripheral graspable bar; and at least one attacher adapted to attach such at least one lower polygonal peripheral base to such at least one upper polygonal peripheral graspable bar. Moreover, it provides such an infant activity system, wherein such at least one lower polygonal peripheral base comprises: at least six end bars, each of essentially equal length; at least two side bars, each of essentially equal length; at least four 90-degree elbow bar connectors; and at least four tee bar connectors. Additionally, it provides such an infant activity system, wherein such at least one attacher comprises at least four attacher bars, each of essentially equal length. Also, it provides such an infant activity system, wherein such at least one upper polygonal peripheral graspable bar comprises: at least two end bars, each of essentially equal length; at least two side bars, each of essentially equal length; and at least four three-way elbow bar connectors. 
     In accordance with another preferred embodiment hereof, this invention provides a kit system for assembling at least one infant activity system relating to providing unrestricted learning-to-walk activities to at least one infant comprising: at least one side bar set; at least one attacher bar set; at least one end bar set; at least one connector set; at least one container; at least one assembly instruction sheet; and at least one indicia; wherein such at least one side bar set, such at least one attacher bar set, such at least one end bar set, and such at least one connector set are assembled to provide such infant activity system. In addition, it provides such a kit system, wherein such at least one side bar set comprises at least four side bars, each of essentially equal length. And, it provides such a kit system, wherein such at least four side bars comprise schedule 40 polymerized vinyl chloride pipe. Further, it provides such a kit system, wherein such at least four side bars comprise color coding. Even further, it provides such a kit system, wherein such at least one end bar set comprises at least eight end bars, each of essentially equal length. Moreover, it provides such a kit system, wherein such at least eight end bars comprise schedule 40 polymerized vinyl chloride pipe. Additionally, it provides such a kit system, wherein such at least eight end bars comprise color coding. Also, it provides such a kit system, wherein such at least one connector set comprises: at least four three-way elbow bar connectors; at least four 90-degree elbow bar connectors; and at least four tee bar connectors. In addition, it provides such a kit system, wherein: such at least four three-way elbow bar connectors comprise schedule 40 polymerized vinyl chloride; such at least four 90-degree elbow bar connectors comprise schedule 40 polymerized vinyl chloride; and such at least four tee bar connectors comprise schedule 40 polymerized vinyl chloride. And, it provides such a kit system, wherein: such at least four three-way elbow bar connectors comprise color coding; such at least four 90-degree elbow bar connectors comprise color coding; and such at least four tee bar connectors comprise at least one color coded-element. Further, it provides such a kit system, wherein such at least one attacher bar set comprises at least four attacher bars, each of essentially equal length. Even further, it provides such a kit system, wherein such at least four attacher bars comprise schedule 40 polymerized vinyl chloride pipe. Even further, it provides such a kit system, wherein such at least four attacher bars comprise color coding. Even further, it provides such a kit system, wherein such at least one container permits easy storage of such at least one infant activity system after disassembly. 
     Furthermore, it provides such a kit system, further comprising at least one removably attachable play feature adapted to removably attach to such at least one infant activity system. In addition, it provides such a kit system, wherein said at least one removably attachable play feature comprises at least one sports related function. Furthermore, it provides such a kit system, wherein said at least one removably attachable play feature comprises at least one basketball hoop. And, it provides such a kit system, wherein said at least one removably attachable play feature comprises at least one soccer net. Furthermore, it provides such a kit system, wherein said at least one removably attachable play feature comprises: at least one soft toy; wherein said at least one soft toy comprises at least one removable attacher adapted to removably attach said at least one soft toy to said infant activity system. Furthermore, it provides such a kit system, wherein said at least one removably attachable play feature comprises at least one cover adapted to cover at least one portion of said infant activity system. 
     In accordance with another preferred embodiment hereof, this invention provides an infant activity system assembly method for at least one infant activity system, relating to providing unrestricted learning-to-walk oriented play activities to at least one infant, comprising upper polygonal peripheral graspable bar means for providing at least one polygonal peripheral graspable bar for grasping by such at least one infant; lower polygonal peripheral support means for supporting such upper polygonal peripheral graspable bar means in at least one fixed elevation position; and geometry means for permitting essentially free movement by such at least one infant throughout such infant activity system, comprising the steps of: providing at least one set of modular components; wherein such at least one set of modular components comprises at least one set of bars having essentially the same outside diameter, and at least one set of connectors having essentially the same inside diameter; and assembling such at least one set of bars and such at least one set of connectors without tools to produce such at least one infant activity system. Even further, it provides such an infant activity system assembly method, wherein such at least one set of bars comprises: at least eight end bars, each of essentially equal length; at least four side bars, each of essentially equal length; and at least four attacher bars. Even further, it provides such an infant activity system assembly method, wherein such at least one set of connectors comprises: at least four three-way elbow bar connectors; at least four 90-degree elbow bar connectors; and at least four tee bar connectors. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows a perspective view of an infant activity system according to a preferred embodiment of the present invention and illustrating an infant using such system. 
         FIG. 2  shows a perspective view of the infant activity system according to the preferred embodiment of  FIG. 1 . 
         FIG. 3  shows the section  3 - 3  of  FIG. 2  illustrating a preferred component fit method for the infant activity system according to the preferred embodiment of  FIG. 2 . 
         FIG. 4  shows a top elevational view of the infant activity system according to the preferred embodiment of  FIG. 2 . 
         FIG. 5  shows an end elevational view of the infant activity system according to the preferred embodiment of  FIG. 2 . 
         FIG. 6  shows a bottom elevational view of the infant activity system according to the preferred embodiment of  FIG. 2 . 
         FIG. 7  shows a side elevational view of the infant activity system according to the preferred embodiment of  FIG. 2 . 
         FIG. 8  shows a preferred infant activity system kit, illustrating the primary components of the kit preferably used to make up the infant activity system according to the preferred embodiment of  FIG. 2 . 
         FIG. 9  shows a perspective view of a side bar extender set of the infant activity system kit of  FIG. 8 . 
         FIG. 10  shows an exploded perspective view of the side bar extender set of  FIG. 9 , including assembled components of the infant activity system. 
         FIG. 11  shows a perspective view of an attachable play feature of the infant activity system kit of  FIG. 8 . 
         FIG. 12  shows a perspective view of the attachable play feature of  FIG. 10 , removably mounted to the infant activity system. 
         FIG. 13  shows the sectional view  13 - 13  of  FIG. 12 . 
         FIG. 14  shows a perspective view of another attachable play feature of the infant activity system kit of  FIG. 8 . 
         FIG. 15  shows a perspective view of another attachable play feature of the infant activity system kit of  FIG. 8 . 
         FIG. 16  shows a perspective view of another attachable play feature of the infant activity system kit of  FIG. 8 . 
         FIG. 17  shows a perspective view of a length adjustable attacher bar according to an alternate embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE BEST MODES AND PREFERRED EMBODIMENTS OF THE INVENTION 
       FIG. 1  shows a perspective view illustrating an infant activity system  100  according to a preferred embodiment of the present invention. 
     As shown, the infant activity system  100  comprises a group of bars and connectors preferably configured to provide a stable and safe system on which children can play while learning to walk. Preferably, the infant activity system  100  is configured to allow the infant to move in all directions around, under and through the infant activity system  100  essentially without limitation to promote interest and continuous usage for more than a few brief moments. Preferably, the infant activity system  100  is configured to allow a parent to assemble or disassemble system  100  without the use of tools because all connectors and bars are preferably friction-fittable without the use of fasteners. Preferably, the infant activity system  100  is configured to fit about 80 to about 90 percent of children approximately ten to eighteen months of age. Larger preferred embodiments of the present invention are suited to the training of physically challenged individuals and in patient physical therapy. 
     Preferably, as illustrated by  FIG. 1  the infant  102  may walk or stand within the upper polygonal peripheral graspable bar  103  of the infant activity system  100  according to a preferred embodiment of the present invention. Because all sides of the infant activity system  100  are open, the infant  102  preferably may stand or walk on the outside of the upper polygonal peripheral graspable bar  103  (at least herein embodying upper polygonal peripheral graspable bar means for grasping by the at least one infant). Additionally, the infant  102  may also preferably use any attacher bar  110 , the upper end bar  106 , or the upper side bar  104  to pull itself up to a standing position because of the stability of the infant activity system  100  preferably provided by the geometric relationship of the upper polygonal peripheral graspable bar  103  and the lower polygonal peripheral support  109  (at least herein embodying lower polygonal peripheral support means for supporting said upper polygonal peripheral graspable bar means in at least one fixed elevation position). Preferably, as shown, the lower polygonal peripheral support  109  is at least three times the width of the upper polygonal peripheral graspable bar  103  and is preferably attached to the outer perimeter of the lower polygonal peripheral support  109  (as shown and described in  FIG. 2  e.g., lower end bars  114  are cumulatively at least three times longer than upper end bar  106 )(at least herein embodying attacher means for attaching said upper polygonal peripheral graspable bar means to said lower polygonal peripheral support means). According to a preferred embodiment of the present invention, these preferred geometric arrangements allow retention of the center of gravity of the infant activity system  100  within the area circumscribed by the lower polygonal peripheral support  109  when an infant  102  applies forces to the upper polygonal peripheral graspable bar  103  (at least herein embodying geometry means for permitting essentially free movement by the at least one infant throughout said infant activity system; at least herein embodying wherein said geometry means comprises tilt-prevention means for essentially preventing tilting of said infant activity system when the at least one infant applies forces to said upper polygonal peripheral graspable bar means; at least herein embodying wherein said lower polygonal peripheral support means comprises lower polygonal peripheral base means surrounding at least one base area for providing at least one lower polygonal peripheral base for said infant activity system; at least herein embodying wherein said geometry means comprises tilt-prevention means for essentially preventing tilting of said infant activity system when the at least one infant applies forces to said upper polygonal peripheral graspable bar means; at least herein embodying wherein said tilt-prevention means comprises geometric retention means for geometrically retaining at least one center of gravity of said infant activity system within such at least one base area when the at least one infant applies forces to said upper polygonal peripheral graspable bar means). 
       FIG. 2  shows a perspective view of the infant activity system according to a preferred embodiment of the present invention. Preferably, the infant activity system  100  comprises at least one upper polygonal peripheral graspable bar  103  adapted to provide a graspable bar for grasping by an infant  102 , as shown (at least herein embodying at least one upper polygonal peripheral graspable bar adapted to be grasped by the at least one infant). Preferably, the upper polygonal peripheral graspable bar  103  is comprised of two upper side bars  104 , two upper end bars  106  and four three-way elbow bar connectors  108 , as shown (at least herein embodying at least two end bars, each of essentially equal length; at least herein embodying at least two side bars, each of essentially equal length; at least herein embodying at least four three-way elbow bar connectors). Further, a lower polygonal peripheral support  109  is adapted preferably to support such at least one upper polygonal peripheral graspable bar  103  at a fixed height and in a fixed position, as shown (at least herein embodying at least one lower polygonal peripheral support adapted to support said at least one upper polygonal peripheral graspable bar in at least one fixed elevation position). 
     According to a preferred embodiment of the present invention, the geometric arrangement of the upper polygonal peripheral graspable bar  103 , the attacher bars  110  and the lower polygonal peripheral support  109  preferably allows the infant  102  essentially movement around and through the infant activity system  100  (at least herein embodying at least one geometric arrangement adapted to permit essentially free movement by the at least one infant throughout said infant activity system). 
     Preferably, as shown, the lower polygonal peripheral support  109  is at least three times the width of the upper polygonal peripheral graspable bar  103  and is preferably attached to the outer perimeter of the lower polygonal peripheral support  109  because preferably the lower end bars  114  are cumulatively at least three times longer than the upper end bars  106  (at least herein embodying wherein said at least one geometric arrangement comprises at least one tilt-prevention arrangement adapted to essentially prevent tilting of said infant activity system when the at least one infant applies forces to said at least one upper polygonal peripheral graspable bar; at least herein embodying at least one lower polygonal peripheral base surrounding at least one base area; at least herein embodying wherein at least one geometric relationship between said at least one lower polygonal peripheral base and said at least one upper polygonal peripheral graspable bar permits retention of at least one center of gravity of said infant activity system within such at least one base area when the at least one infant applies forces to said upper polygonal peripheral graspable bar; at least herein embodying at least one attacher adapted to attach said at least one lower polygonal peripheral base to said at least one upper polygonal peripheral graspable bar). 
     Preferably, as shown, the lower polygonal peripheral support  109  comprises at least one lower polygonal peripheral base  111  and four attacher bars  110  of essentially equal length (at least herein embodying wherein said at least one attacher comprises at least four attacher bars, each of essentially equal length). Preferably, the polygonal peripheral base  111  comprises at least six lower end bars  114 , at least two lower side bars  118 , at least four 90-degree elbow bar connectors  116  and at least four tee (T-shaped, herein sometimes “tee” or “T”) bar connectors  112 , as shown (at least herein embodying at least six end bars, each of essentially equal length; at least herein embodying at least two side bars, each of essentially equal length; at least herein embodying at least four 90-degree elbow bar connectors; at least herein embodying at least four tee bar connectors). 
     Preferably, all bars (including upper side bar  104 , upper end bar  106 , attacher bar  110 , lower end bar  114 , and lower side bar  118 ) comprise nominal one-inch outside diameter industry-standard plastic piping, preferably industry-standard polymerized vinyl chloride solid wall pipe, preferably industry-standard schedule 40 polymerized vinyl chloride solid wall pipe, which piping is well known in the plumbing industry and readily available commercially (at least herein embodying wherein said at least four side bars comprise schedule 40 polymerized vinyl chloride; at least herein embodying wherein said at least eight end bars comprise schedule 40 polymerized vinyl chloride pipe; at least herein embodying wherein said at least four attacher bars comprise schedule 40 polymerized vinyl chloride pipe; and at least herein embodying at least one set of bars having essentially the same outside diameter). Preferably, all connectors (including three-way elbow bar connector  108 , tee bar connector  112  and 90-degree elbow bar connector  116 ) are nominal one-inch inside diameter industry-standard plastic connectors, preferably industry-standard polymerized vinyl chloride solid wall connectors, preferably industry-standard schedule 40 polymerized vinyl chloride solid wall connectors (at least herein embodying said at least four three-way elbow bar connectors comprise schedule 40 polymerized vinyl chloride; said at least four 90-degree elbow bar connectors comprise schedule 40 polymerized vinyl chloride; and said at least four tee bar connectors comprise schedule 40 polymerized vinyl chloride; and at least herein embodying at least one set of connectors having essentially the same inside diameter). Preferably, use of industry-standard pipe and connectors allows a reliable dry friction fit between the bars and connectors. Upon reading the teachings of this specification, those with ordinary skill in the art will now understand that, under appropriate circumstances, considering issues such as cost, material availability, weight, durability, infant safety, market demand, etc., other pipe arrangements, such as, for example, the use of polymerized vinyl chloride pipe with other diameters such as nominal outside diameters of 1½ inches, 2 inches, etc., may suffice. Upon reading the teachings of this specification, those with ordinary skill in the art will now understand that, under appropriate circumstances, considering issues such as cost, material availability, weight, durability, infant safety, market demand, etc., other connector arrangements, such as, for example, the use of polymerized vinyl chloride connectors with other inside diameters such as nominal inside diameter of 1½ inches, nominal inside diameter of 2 inches, etc., may suffice. 
     Preferably, each upper side bar  104  and each lower side bar  118  are essentially the same length. Preferably, each upper side bar  104  and each lower side bar  118  are about 30 inches in length. Preferably, each attacher bar  110  is about 15 inches in length (length adjustable embodiments are discussed in  FIG. 17 ). Preferably, each upper end bar  106  and each lower end bar  114  are essentially the same length. Preferably, upper end bar  106  and lower end bar  114  are about eight inches in length. Upon reading the teachings of this specification, those with ordinary skill in the art will now understand that, under appropriate circumstances, considering issues such as cost, material availability, weight, durability, infant safety, market demand, etc., other bar length arrangements, such as, for example, an upper side bar and lower side bar with other lengths, such as about 36 inches, and an upper end bar and a lower end bar with other lengths, such as about 9 inches, etc., may suffice. 
       FIG. 3  shows the section  3 - 3  of  FIG. 2  illustrating a preferred component fit method for the infant activity system according to the preferred embodiment of  FIG. 2 . An example of all pipe and connector connections is shown in the section view  3 - 3  where, for example, a lower end bar  114  and a lower side bar  118  are preferably dry-fitted into a 90-degree elbow bar connector  116 . Preferably, this dry-fit system allows the infant activity system  100  to be assembled by hand, without the use of tools, adhesives or fasteners, which greatly simplifies the assembly/disassembly process for the user (at least herein embodying assembling such at least one set of bars and such at least one set of connectors without tools to produce such at least one infant activity system). Additionally, the close tolerances of industry-standard schedule 40 polymerized vinyl chloride solid wall connectors and industry-standard schedule 40 polymerized vinyl chloride solid wall pipes preferably allow the infant activity system  100  to be very stable. 
       FIG. 4  shows a top elevational view of the infant activity system  100  according to the preferred embodiment of  FIG. 2 . 
       FIG. 5  shows an end elevational view of the infant activity system  100  according to the preferred embodiment of  FIG. 2 . 
       FIG. 6  shows a bottom elevational view of the infant activity system according to the preferred embodiment of  FIG. 2 . 
       FIG. 7  shows a side elevational view of infant activity system  100  according to the preferred embodiment of  FIG. 2 . 
       FIG. 8  shows the preferred infant activity system kit  200 , illustrating the primary components used to assemble the infant activity system according to the preferred embodiment of  FIG. 2  (at least herein embodying wherein said at least one side bar set, said at least one attacher bar set, said at least one end bar set, and said at least one connector set are assembled to provide said infant activity system; and at least herein embodying providing at least one set of modular components). The infant activity system  100  is preferably provided as an infant activity system kit  200  that preferably comprises, as shown: 
     at least one side bar set  203  comprising at least four side bars  204  of essentially equal length (at least herein embodying at least one side bar set; and at least herein embodying wherein said at least one side bar set comprises at least four side bars, each of essentially equal length); 
     at least one attacher bar set  209  comprising at least four attacher bars  210  of essentially equal length (at least herein embodying at least one attacher bar set; and at least herein embodying wherein said at least one attacher bar set comprises at least four attacher bars, each of essentially equal length); 
     at least one end bar set  205  comprising at least eight end bars  206  of essentially equal length (at least herein embodying at least one end bar set; and at least herein embodying wherein said at least one end bar set comprises at least eight end bars, each of essentially equal length); 
     at least one connector set  211  comprising at least four three-way elbow bar connectors  208 , at least four 90-degree elbow bar connectors  216 , and at least four tee bar connectors  212  (at least herein embodying at least one connector set; and at least herein embodying wherein said at least one connector set comprises: at least four three-way elbow bar connectors; at least four 90-degree elbow bar connectors; and at least four tee bar connectors); at least one flexible bag container  202  (at least one container at least one container); and at least one assembly instruction sheet  218  (at least herein embodying at least one assembly instruction sheet). 
     Preferably, both the flexible bag container  202  and the assembly instruction sheet  218  will include the product name indicia  220  (at least herein embodying at least one indicia). Preferably, the flexible bag container  202  is reusable and intended to allow all components of the disassembled infant activity system  100  to be conveniently and easily stored (at least herein embodying wherein said at least one container allows easy storage of such at least one infant activity system after disassembly). 
     Preferably, all components may be color-coded using a variety of colors to facilitate assembly and/or to improve marketability of the infant activity system  100 . Preferably, side bar  204  and/or end bar  206  may be color-coded in one color, preferably red (at least herein embodying wherein said at least four side bars comprise color coding; and at least herein embodying wherein said at least eight end bars comprise color coding). Preferably, attacher bar  210  may be color-coded in one color, preferably blue (at least herein embodying wherein said at least four attacher bars comprise color coding). Preferably, essentially each three-way elbow bar connector  208 , tee bar connector  212  and 90-degree elbow bar connector  216  may be color-coded in one color, preferably white (at least herein embodying wherein: said at least four three-way elbow bar connectors comprise color coding said at least four 90-degree elbow bar connectors comprise color coding; and said at least four tee bar connectors comprise at least one color coded-element). 
     Infant activity system kit  200  of  FIG. 8  shows a preferred embodiment illustrating the primary components of the kit preferably used to make up infant activity system  100 . 
       FIG. 9  shows a perspective view of side bar extender set  300  of infant activity system kit  200  of  FIG. 8 , according to a preferred embodiment of the present invention.  FIG. 10  shows an exploded perspective view of side bar extender set  300  of  FIG. 9 , including partially assembled components of infant activity system kit  200 . Preferred embodiments of infant activity system kit  200  comprise side bar extender set  300 , as shown (at least embodying herein at least one side bar extender set; wherein such at least one side bar extender set comprises at least four side extender bars, each of essentially equal length; and at least four linear bar connectors). Preferably, side bar extender set  300  is adapted to lengthen side bars  204  of infant activity system  100 , as shown. Preferably, each side bar extender  301  of side bar extender set  300  comprises side bar  204   a  and linear bar connector  302 , as shown. Preferably, side bar  204   a  and linear bar connector  302  are interconnectable with the above-described components of infant activity system  100 , as shown. Preferably, side bar  204   a  and linear bar connector  302  are constructed from materials substantially matching those of infant activity system  100 . Preferably, side bar extender set  300  comprises four side bars  204   a  and four linear bar connectors  302 , as shown. Upon reading the teachings of this specification, those with ordinary skill in the art will now understand that, under appropriate circumstances, considering issues such as commercial markets, intended use, etc., other kit arrangements, such as, for example, supplying extender bars as the sole element of an upgrade kit, providing additional extender for other portions of the system, etc., may suffice. 
     Preferably, to provide added user convenience, portions of infant activity system kit  200  are factory preassembled (at least embodying herein wherein said at least one attacher bar set, said at least one end bar set, and said at least one connector set are factory pre-assembled). Preferably, end bar set  205 , attacher bar set  209 , and connector set  211 , are preassembled at the factory prior to shipping, as shown. Upon reading the teachings of this specification, those with ordinary skill in the art will now understand that, under appropriate circumstances, considering issues such as preferred shipping size, intended use, etc., other kit arrangements, such as, for example, providing fully assembled units, etc., may suffice. Furthermore, upon reading the teachings of this specification, those with ordinary skill in the art will now understand that, under appropriate circumstances, considering issues such as cost, consumer demand etc., other end support arrangements, such as, for example, producing a unitary molded unit replacing the end bar set, attacher bar set, and connector set, etc., may suffice. 
       FIG. 11  shows a perspective view of attachable play feature  401  of infant activity system kit  200  of  FIG. 8 , according to a preferred embodiment of the present invention.  FIG. 12  shows a perspective view of attachable play feature  401  of  FIG. 10 , removably mounted to infant activity system  100 . Preferred embodiments of infant activity system kit  200  further comprise attachable play features  401  adapted to enhance the functionality of infant activity system  100  (at least embodying herein at least one removably attachable play feature adapted to removably attach to such at least one infant activity system).  FIG. 11  and  FIG. 12  illustrate the use of attachable play feature  401  having a sports related theme, in conjunction with infant activity system  100 , as shown. More specifically,  FIG. 11  and  FIG. 12  illustrate the use of attachable play feature  401  comprising basketball hoop  402  (at least embodying herein wherein such at least one removably attachable play feature comprises at least one sports related function and such at least one removably attachable play feature comprises at least one basketball hoop). Preferably, basketball hoop  402  is of a type used with basketballs of reduced size, especially basketballs of foam construction. Preferably, basketball hoop  402  comprises a hoop diameter of about six inches and a backboard dimension of about 12 inches by 12 inches, as shown. Preferably, basketball hoop  402  is constructed from an appropriately durably material, most preferably plastic. Upon reading the teachings of this specification, those with ordinary skill in the art will now understand that, under appropriate circumstances, considering issues such as sport theme, intended use, etc., the use of other basketball hoop features, such as, for example, team logos, indcia, etc., may suffice. 
     Preferably, attachable play feature  401  is adaptable to comprise a wide range of sports related attachments including goal net  404  (as depicted in  FIG. 12  with dashed lines), as shown. Preferably, goal net  404  is adapted to convert infant activity system  100  to an alternate sports related use, preferably a soccer or hockey goal, as shown. Upon reading the teachings of this specification, those of ordinary skill in the art will now understand that, under appropriate circumstances, considering such issues as intended use, age of user, regional activity preference, etc., other sport arrangements, such as, for example, converting the system for use as a football training target, golf drive practice net, etc., may suffice. 
       FIG. 13  shows the sectional view  13 - 13  of  FIG. 12 . Preferably, basketball hoop  402  comprises coupler support  406 , as shown. Preferably, coupler support  406  is adapted to support basketball hoop  402  by engaging a horizontally oriented bar  450  of infant activity system  100 , as shown. Preferably, basketball hoop  402  is adapted to be stabilized by one or more vertically oriented bars  452  of infant activity system  100 , as shown. 
       FIG. 14  shows a perspective view of another attachable play feature  401  of infant activity system kit  200  of  FIG. 8 . Preferred embodiments of infant activity system kit  200  further comprise soft toy embodiments of attachable play feature  401 , such as soft toy  408 , as shown (at least embodying herein at least one soft toy; wherein said at least one soft toy comprises at least one removable attacher adapted to removably attach said at least one soft toy to said infant activity system). Preferably, soft toy  408  comprises at least one removable fastener, preferably a hook-and-loop fastener identified herein as fastener  410 . Preferably, fastener  410  is adapted to firmly hold soft toy  408  suspended above the child user while providing a breakaway safety feature if more than a predetermined weight is applied to soft toy  408 . 
       FIG. 15  shows a perspective view of another preferred embodiment of attachable play feature  401  of infant activity system kit  200  of  FIG. 8 . Preferably, soft toy  408  of  FIG. 15  has been located to draw the child user into walking the length of infant activity system  100 . 
       FIG. 16  shows a perspective view of another attachable play feature  401  of the infant activity system kit  200  of  FIG. 8 . Preferably, attachable play feature  401  of  FIG. 15  comprises cover  420 , as shown. Preferably, cover  420  is adapted to drape infant activity system  100  thus providing a “tent-like” structure for imagined play. Preferably, cover  420  comprises one or more hook-and-loop (or similar) fasteners  422  to assist in securing cover  420  to infant activity system  100 , as shown. 
     Preferably, cover  420  (at least embodying herein at least one cover adapted to cover at least one portion of said infant activity system) is constructed from soft/flexible fabric materials, as shown. Upon reading the teachings of this specification, those with ordinary skill in the art will now understand that, under appropriate circumstances, considering issues such as intended use, etc., the inclusion of other cover features, such as, for example, themed indicia, storage pockets, windows, inflatable sections, soft padding including safety padding, etc., may suffice. 
       FIG. 17  shows a perspective view of a length adjustable attacher bar  310 , of infant activity system  100 , according to an alternate preferred embodiment of the present invention. Alternate preferred embodiments of infant activity system  100  preferably comprise length-adjustable attacher bars  310  adapted to adjust the height (distance) of upper side bars  104  relative to the lower polygonal peripheral support  109 , as shown (at least embodying herein wherein said at least one upper polygonal peripheral graspable bar is user adjustable to at least two fixed elevation positions relative to said at least one lower polygonal peripheral support). Preferably, the available adjustment is in the range of several inches. This preferred alternate feature allows the system to better accommodate older children. Preferably, length-adjustable attacher bars  310  comprise a telescoping sleeve arrangement having a locking mechanism  311 , preferably comprising an interlocking “spring-button and hole” arrangement  312 , as shown. Upon reading the teachings of this specification, those with ordinary skill in the art will now understand that, under appropriate circumstances, considering such issues as economics, user preference, ease of use, manufacturing preferences, etc., other leg height adjusting mechanisms, such as friction clamps, threaded locks, pins, screws, longer length support bars, etc. may suffice. 
     Although applicant has described applicant&#39;s preferred embodiments of this invention, it will be understood that the broadest scope of this invention includes modifications such as diverse shapes, sizes, and materials. Such scope is limited only by the below claims as read in connection with the above specification. 
     Further, many other advantages of applicant&#39;s invention will be apparent to those skilled in the art from the above descriptions and the below claims.