Abstract:
A portable activity case for use in an automobile has an attachment mechanism that secures the activity case to most automobile seatbacks. The case is provided with an ergonomic fold-out table with a support that extends over the child&#39;s lap. The table also has two legs which extend down to provide support for the activity table to make the case self-standing for use on any flat surface. The case is large enough to contain coloring books, notebooks, and related writing supplies while maintaining a lightweight, yet strong and safe case structure.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS  
       [0001]     This application claims the benefit of U.S. Provisional Patent Application No. 60/631,554, filed on Nov. 29, 2004. 
     
    
     STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT  
       [0002]     Not Applicable.  
       THE NAMES OF THE PARTIES TO A JOINT RESEARCH OR DEVELOPMENT  
       [0003]     Not Applicable.  
       BACKGROUND OF THE INVENTION  
       [0004]     1. Field of the Invention  
         [0005]     The present invention relates to vehicle supported planar surfaces and particularly to a portable activity case which can be easily transported from the home and used in the automobile, via an attachment mechanism that secures the case to most automobile seatbacks, said case is large enough to contain 8.5″×11″ size books (i.e., coloring and notebooks for example) with related writing supplies (i.e., crayons, markers, colored pencils) while maintaining a lightweight, yet strong and safe case structure, the case being further provided with a fold-out table feature that extends over the child&#39;s lap, providing adequate ergonomic interaction and hours of safe, enjoyable play, and further provided with two legs which extend down to provide support for the activity table to make the case self-standing for use on any flat surface outside of the vehicle.  
         [0006]     2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 1.98  
         [0007]     As most parents know, the problems of keeping peace within a family group in a confined space can be particularly trying when family groups are traveling in automobiles. When a child is securely fastened within a child safety seat (for younger children) or restrained by shoulder and lap restraints has made it difficult to provide a child with the opportunity to entertain his or herself during long automotive trips.  
         [0008]     Many parents have looked for activities to occupy their children within a vehicle to make long distance travel more peaceful. Parents typically bring numerous books, drawing supplies, and small toys for the children to play with in the vehicle. There are at least three major problems with loose activity materials in a vehicle which are not adequately addressed by the prior art: transporting the materials in a convenient and orderly fashion, storing the materials for convenient access and use in the vehicle, and providing an ergonomic surface on which to use the materials.  
         [0009]     Prior art U.S. Pat. No. 5,878,672, issued Mar. 9, 1999 to Ostermann, discloses a portable organizer desk for use while traveling. The portable organizer desk comprises a sheet of a substantially planar flexible material, a pair of elongate handle straps attached to the sheet on a first fold line defining a first panel and a second panel in the sheet, a pair of loops attached to the sheet along a second fold line defining a third panel, a pair of connecting straps attached to the sheet in the second panel, a plurality of pockets detachably connected to the sheet in the third panel, and a lapboard detachably connected to the connecting straps. The lapboard has an activity surface and an opposing padded surface. The pair of connecting straps permit the lapboard to be selectively moved between a first position against the second panel of the sheet and a second position extending outwardly therefrom. The lapboard is detachably secured in the first position.  
         [0010]     Prior art U.S. Pat. No. 5,269,229, issued Dec. 14, 1993 to Akapatangkul, provides a retractable tray assembly, which is mounted at the rear surface of a vehicle seat and can be swung between a retracted upright position within a support frame and a generally horizontal service position extending outwardly from the frame. Tracks along side edges of the tray enable the tray to be slidably adjusted toward or away from a person seated behind the tray.  
         [0011]     Prior art U.S. Pat. No. 5,984,347, issued Nov. 16, 1999 to Blanc-Rosset, describes an attaché case type accessory for motor vehicles or the like having at least two seats arranged one behind the other, the front seat having a headrest or the like. The accessory is adapted to be removably mounted to the back of the front seat so as to form a functional platform for a passenger sitting on the back seat. The attaché case accessory includes a casing, a rigid frame and a stabilizing means. The attaché case type accessory is rotatably mounted about a shaft so that it can be, in a non-use position, in a substantially vertical plane, and; in use position, in a substantially horizontal plane. The upper portion of the rigid frame is suspended by a suspending and height adjustment means to the vertical supports of the headrest of the front seat. The stabilizing means comprises a pair of arms that engage the back of the seat so as to adjust and maintain the accessory in its substantially horizontal and vertical planes respectively.  
         [0012]     Prior art U.S. Pat. No. #D419,520, issued Jan. 25, 2000 to Bergh, shows the ornamental design for a vehicle backseat organizer.  
         [0013]     Prior art U.S. Pat. No. #D153,348, issued Apr. 12, 1949 to Gainsbro, claims the ornamental design for a combined motor vehicle service cabinet and table.  
         [0014]     Prior art U.S. Pat. No. 4,466,659, issued Aug. 21, 1984 to Carpentier, concerns a folding tray holder for attachment to the rear of a stadium seat. The device comprises hook like members on each side thereof which engage upright seat supports on each side of the seat and support the holder on the back of the seat. The holder has a rigid planar member in a bottom panel which may be folded upward from a supporting position when emptied to a stowed position to allow persons to pass along the aisle. The holder may be secured in the folded or stowed position and has a shoulder strap for carrying when removed from the seat back.  
         [0015]     Prior art U.S. Patent Application #20030051640, published Mar. 20, 2003 by Roseler, describes a removable tray table assembly, which attaches to the back of a front seat in a motor vehicle. The tray table is comprised of a flat tray member inside a frame, a flat member attached to the tray member via a hinge and two straps. The flat member of the assembly is inserted into the seat back pocket of the front seat in a motor vehicle. The hinge allows the tray member to be deployed to its horizontal usable position. The straps are attached to the left and right edges of the tray member and secured to the headrest of the front seat. The straps hold the tray member in its usable horizontal position. The horizontal attitude of the tray member is adjusted relative to the tilt of the front seat via the buckling device by loosening or tightening the straps. To move the tray to its non-use position the straps are released from their respective buckling device located adjacent to the tray itself, the tray is lifted in an upright manner. To secure the tray in it&#39;s upright and locked position the straps that hold the tray in the horizontal position are buckled together across the bottom of the tray, thus securing the tray. The bottom of the tray is covered with upholstery to make any contact with the tray comfortable. The tray can be fitted with a cup holder for containing drink cups and boxes. The assembly can also have a netting device located along the top edge of the tray to contain materials (i.e. pencils, papers, crayons, etc.) when in its upright stowed position. The flat portion or the tray can be decorated as a game board (i.e. checkers, etc.). This is an ideal way for children to be able to contain foodstuffs and participate in writing, coloring and game activities while traveling in a motor vehicle.  
         [0016]     Prior art U.S. Pat. No. 6,554,683, issued Aug. 23, 2001 to Hochfeld, discloses an amusement device for use in a traveling vehicle. The device includes a housing having a paper holding area defined by side walls and a bottom wall for receiving and holding a piece of paper therein, a transparent top wall in overlying relation to the paper holding area such that the piece of paper is viewable through the transparent wall, the transparent wall having an outer surface which can be written on and then erased, and a slot in one side wall for receiving the piece of paper into the paper holding area and for removing the piece of paper from the paper holding area; a mounting assembly for mounting the housing to a seat of the traveling vehicle so that the piece of paper is viewable by a person to the rear of the seat, the mounting assembly including two hook members connected with the housing for hanging the housing from the seat of the traveling vehicle; a plurality of light emitting diodes mounted in spaced relation to an inner surface of the transparent wall for providing an indication as to predefined points on the paper held in the paper holding area, the paper includes indicia thereon corresponding to the light emitting diodes; an actuation device for actuating selected ones of the light emitting diodes from a location remote from the housing; and a back light in the housing for illuminating a rear side of the piece of paper.  
         [0017]     Prior art U.S. Pat. No. 5,813,354, issued Sep. 29, 1998 to Scott, indicates a vehicle seatback tray assembly that includes a main tray assembly; a two-sided, two-way pivoting mirror assembly; two user formable, upper attachment hooks; and two adjustable length lower securing strap assemblies. The main tray assembly includes a main housing, a pivoting tray member and a tray member angular adjustment mechanism. The main housing includes a forward storage tray, a main housing compartment, a light compartment for housing a light bulb socket, and a light bulb socket controlling on/off switch. The pivoting tray member is pivotally connected to the main housing and includes a light opening that pivots over the light compartment of the main housing when the pivoting tray member is pivoted into a closed position blocking. The angular adjustment mechanism includes a curved locking bar and a locking pin assembly. The two-sided, two-way pivoting mirror assembly is positioned within the main housing compartment and includes a two-sided mirror, a first and a second pivot bar, a first and a second pivoting strip connector, and first and second pull straps.  
         [0018]     Prior art U.S. Pat. No. 5,722,586, issued Mar. 3, 1998 to Hansen, discloses a portable desk for hanging from the rear portion of a seat back. The desk includes a table board having substantially planer upper and lower surfaces, a top portion and a bottom portion. A pair of mounting brackets are provided with each such bracket having a mounting portion securable to the table board bottom surface and an attachment portion extending beyond the top portion of the table board. The attachment portion includes connection members for releasable attachment to the top of a seat back. Support members extend from the table board bottom surface for bracing the table board against the rear surface of a seat back to define the operational angle of the desk relative to the seat back. Finally, a support ledge is disposed along the upper table board surface at the bottom portion to provide a brace for materials placed on the table board upper surface during the use of the desk.  
         [0019]     Prior art U.S. Pat. No. 5,511,493, issued Apr. 30, 1996 to Kanehl, Jr., concerns a vehicle mountable table for supporting objects within a vehicle. The inventive device includes a pair of mounting brackets securable to a door or seat of the associated vehicle. A table member is coupled to the mounting brackets by an adjustment assembly, which permits vertical movement of the tray relative to the brackets.  
         [0020]     Prior art U.S. Pat. No. 5,443,018, issued Aug. 22, 1995 to Cromwell, illustrates a folding tray for attachment to a vehicle seat back, in which first box and a second box are connected to a base member. The base member may be attached to the back of a vehicle seat with a mounting harness. The second box and the first box can be moved to an open position, away from the seat back. The tops of the boxes can then be opened, or folded up to form an easel for holding a book. A handle is provided for using the invention apart from a vehicle.  
         [0021]     Prior art U.S. Pat. No. 5,411,192, issued May 2, 1995 to Xiao depicts a folding table disposed within a tote bag, which may be extended therefrom to rest on a surface or, alternatively, suspend from an automobile seat and the like. The table may be positioned at various angles relative to the supporting surface so as to maintain a level position and it includes both a drink holder and a book holder for securing a position of such articles upon the table. The apparatus further includes a pair of carrying straps configurable into either a backpack harness or a handbag strap and is also provided with a table cloth which may be unrolled therefrom for subsequent use.  
         [0022]     Prior art U.S. Pat. No. 5,370,060, issued Dec. 6, 1994 to Wang, is for a multipurpose automobile foldaway table, which includes a table pivotably connected to a frame, two retractably bars respectively and retractably fastened to the frame, and lock screws respectively threaded into screw holes on the frame for locking the retractable bars at a desired elevation, each retractable bar having a top end terminated to a swivel hook for mounting on the head rest of a car seat, the table having recessed top compartments covered by a sliding cover for holding things, and collapsible stands at the bottom for supporting the foldaway table on the ground as it is dismantled from the car seat.  
         [0023]     Prior art U.S. Pat. No. 5,046,433, issued Sep. 10, 1991 to Kramer, describes an adjustable folding table apparatus for attachment to a seat back for use primarily within an automobile or other vehicle. The table apparatus includes a tray portion rotatable between a substantially vertical stored position and a substantially horizontal extended position, suspended from a portion of the seat back and employing a series of flexible straps to enable both facilitated attachment and detachment of the apparatus from the seat back, as well as adjustment of the vertical and/or angular orientation of the tray apparatus. A latch or catch serves to retain the tray portion in a folded up or stored position until it is dislodged.  
         [0024]     Prior art U.S. Pat. No. 4,770,107, issued Sep. 13, 1988 to Miller, indicates a portable and collapsible travel tray assembly for mounting in conjunction with a conventional automobile seat positioned to the front of the user of the tray and the seat of the user, particularly a child&#39;s car seat. The portable tray assembly comprises a rigid bottom panel member having front, back, and side portions. The bottom panel member is provided with a pair of opposing folding side panels, which extend along the side portions of the bottom panel and above the plane of the bottom panel when in the unfolded position. The tray assembly also includes a front folding panel extending between the opposing side panels and along the front portion of the bottom panel and above the plane of said bottom panel. The folding side and front panels permit the tray to be converted from a stowed or collapsed position when the side and front panels are in the folded or stowed position to a position of use when in the unfolded position. The opposing side panels include flexible arm members, which extend beyond the front portion of the bottom panel and attach to front suspension means for supporting the front portion of the tray. A back suspension means is attached to the back portion of the bottom panel whereby the front and back suspension means co-act to hold the tray in level position. When so mounted the tray is particularly adapted to serve as a small travel tray for the reception of articles in a position where it is readily accessible to a child, for example, seated in a car seat.  
         [0025]     Prior art U.S. Pat. No. #3,386,392, issued Jun. 4, 1968 to Gramm, discloses an adjustable tray apparatus for supporting a pet or articles in vertically and angularly variable positions relative to an automobile seat or the like. A parallel pair of horizontal supports are removably secured in vertically adjustably spaced engagement at their ends with a parallel pair of generally vertical support members adapted to hook over the back of the seat in either forward or rearward orientation. A tray base is pivotally removably mounted on either of the horizontal supports and is provided with a pair of slotted tracks for slidable receiving the corresponding ends of a pair of angular supports, the other ends of which are pivotally removably mounted on the other horizontal support. The tray base is provided with a removable pet cushion. The apparatus is laterally adjustable to accommodate differently contoured seats and is collapsible and disassemblable.  
         [0026]     Prior art U.S. Pat. No. 2,932,544, issued Apr. 12, 1960 to Lambert, indicates a collapsible support device for vehicle. The device comprises a master frame, hanger means on one end of said master frame to overhang the upper edge of a seat back, a generally rectangular tray support frame hingedly connected to said master frame, a tray supported by said support frame, a pair of brace bars pivoted to and extending from opposite sides of the support frame, a collar hingedly connected to the lower end of each brace bar, each collar being longitudinally slidable on a respective portion of the master frame, and an abutment means extending laterally from each collar. A hook device is pivoted on the upper end of each of said respective portions of the master frame. Each hook has an extension means to be engaged on the corresponding collar. Each hook has stop means to engage the corresponding portion of the master frame to limit pivotal movement of the hook in one direction, whereby the collar cams its said hook out of its path momentarily when raised and quickly lowered to release the hook.  
         [0027]     Prior art U.S. Pat. No. 2,921,824, issued Jan. 19, 1960 to Richter, puts forth a collapsible table-stand for use primarily inside of an automobile. The device comprises a rectangular table platform; a U-shaped platform tubing disposed around the front edge and both sides of the platform and having extension portions extending suitably beyond each side of the table; a swingable clamp journaled to each of the extension portions of the platform tubing; a U-shaped frame tubing disposed in said clamps&#39; tubing with the clamps respectively secured to the respective ends of the frame tubing, the legs of the frame tubing having a plurality of spaced-apart locking apertures therein; telescopic linear tubular means hingedly secured at one end to the bottom wall of said table platform and hingedly secured at the other end to the base of the U-shaped frame member; a pair of C-shaped tubular hangers each having a suitably long arm of suitable diameter to insertion into the legs of the U-shaped frame member and having an aperture adjacent the end of the long arm and a single coil spring having a button therein disposed in each long arm of said hanger and through the aperture thereof, whereby the long arms of the hangers are slidably adjustable in the legs of the U-shaped frame member and locked thereto by engagement of said button through the apertures of the frame member.  
         [0028]     Prior art U.S. Pat. No. 2,687,336, issued Aug. 24, 1954 to Smith, concerns a table for attachment to the back of an automobile seat. The table comprises a table top; a pair of laterally spaced supportive brackets beneath the table top, each including a depending rear arm; a pair of suspension hooks carried by said brackets and engageable over the seat back to suspend the brackets; and a pair of laterally spaced vertical pusher bars in the rear of said arms engageable with the seat back. Hinges connect the bars at upper ends thereof to said arms for vertical tilting of the arms for leveling the brackets to level the table top. Jack screws are threaded through the arms for turning against the bars to tilts the arms.  
         [0029]     Prior art U.S. Patent Application #20010039903, published Nov. 15, 2001 by Patterson, shows a car seat travel tray apparatus for providing a work surface in an automobile. A first portion including a rigid member is hingedly coupled to a tray portion including a rigid member. Straps or other attachment mechanism is coupled to the first portion to allow the apparatus to be attached to an automobile seat back. The first portion is attached in a position adjacent to the seat back, and the tray portion is rotated downward in an arc to a desired orientation, most commonly substantially parallel to the ground. A retainer retains the tray portion in the desired orientation relative to the seat back. In one embodiment, a cord and cord-lock are used as the retainer. The cord and cord lock allow adjustment of the orientation of the tray portion through a continuum when the apparatus is installed. This permits the apparatus to accommodate a wide variety of seat backs having broadly varying angles. Pocketing of various types may be disposed in a volume between the first portion and the tray portion.  
         [0030]     What is needed is a convenient and orderly way to transport loose activity materials, such as books, drawing supplies, and small toys for use in activities to occupy children within a vehicle to make long distance travel more peaceful, a way to store the materials for convenient access and use in the vehicle, an ergonomic surface on which to use the materials, and a means to stabilize the case and table against the back of the front seat of the vehicle.  
       BRIEF SUMMARY OF THE INVENTION  
       [0031]     An object of the present invention is to provide a lightweight closable carrying case with carrying straps as a convenient and orderly way to transport loose activity materials, such as books, drawing supplies, and small toys for use in activities to occupy children within a vehicle to make long distance travel more peaceful, multiple separate easy to view and access compartments in the pack as a way to store the materials for convenient access and use in the vehicle, and apparatus for mounting the case on a back of a front seat of a vehicle with an easy to use comfortable fold down table as an ergonomic surface on which to use the materials by a child seat belted into the back seat, and a projecting rear triangulated stabilizing structure to stabilize the case against the back of a front seat of a vehicle.  
         [0032]     Another object of the present invention is to provide a portable activity case with an ergonomic table having extendable table support legs which extend down to provide support for the activity table and allow the case to be self-standing for use on any flat horizontal surface outside of the vehicle.  
         [0033]     A further object of the present invention is to provide a portable activity case manufactured from lightweight materials which while being durable, would cause less injury should a person come in contact with the activity case during a collision.  
         [0034]     A contributory object of the present invention is to provide a portable activity case which can be adjusted to compensate for varying reclining angles of the front seat.  
         [0035]     In brief, the present invention comprises a portable activity case which can be easily transported from the home, using a top handle, shoulder strap or backpack straps, and used in a vehicle, via an attachment mechanism that secures the case to most automobile seatbacks. The case is large enough to contain 8.5″×11″ size books (i.e., coloring and notebooks for example) with related writing supplies (i.e., crayons, markers, colored pencils) while maintaining a lightweight, yet strong and safe case structure. The various activity tools can be attached to one or more boards which fit in the case and can secure to an inside surface using mating hook and loop fasteners. The case further comprises a fold-out table feature that extends over a child&#39;s lap, providing adequate ergonomic interaction and hours of safe, enjoyable play, and further provided with two legs which extend down to provide support for the activity table to make the case self-standing for use on any flat surface outside of the vehicle.  
         [0036]     The activity case of the present invention has several structural features that are very important to the installation and function of the case inside the automobile, especially as there are many variations in seating design within the automotive industry. In addition, some seats are produced with an adjustable headrest and some have a solid seatback with no provision for headrest adjustment. Many Sport Utility Vehicles and Minivans have front seats with no headrest adjustment feature. The following design overview will describe how the activity case is designed to overcome these variables for optimal functionality in the vehicle.  
         [0037]     An advantage of the present invention is that it is easily transported.  
         [0038]     Another advantage of the present invention is that it provides safety features that would cause less injury should a person come in contact with the case during a collision.  
         [0039]     One more advantage of the present invention is that it compensates for varying reclining seat angles.  
         [0040]     Still another advantage of the present invention is that the front brace supporting the activity surface is angle to provide adequate leg room underneath.  
         [0041]     An additional advantage of the present invention is that it can securely support itself on and perpendicular to a flat horizontal surface outside of the vehicle.  
         [0042]     A contributory advantage of the present invention is that it may be used with a variety of seat backs.  
         [0043]     Yet another advantage of the present invention is that the activity surface is positioned halfway up the case so that there is adequate leg room underneath for use in a vehicle and also to elevate the activity surface above the ground or a floor or a table surface when used outside of a vehicle. 
     
    
     BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS  
       [0044]     These and other details of my invention will be described in connection with the accompanying drawings, which are furnished only by way of illustration and not in limitation of the invention, and in which drawings:  
         [0045]      FIG. 1  is a perspective view of the transportable activity case mounted on the back of a front seat of a vehicle with the back brace out against the seat and the table surface out for use;  
         [0046]      FIG. 1A  is a front elevational diagrammatic view showing the T-shaped hook of the present invention hooked between the support posts of a vehicle seat headrest;  
         [0047]      FIG. 2  is a perspective view of the transportable activity case resting on an external horizontal surface with the back brace out resting and the table surface support legs down on the external horizontal surface and the table surface out for use;  
         [0048]      FIG. 3  is a perspective view of the transportable activity case of the present invention all closed up for transporting or storing;  
         [0049]      FIG. 4  is a plan view showing a cut out sheet of corrugated material used to construct the activity case structure of the present invention showing the partial cuts forming fold lines and living hinges;  
         [0050]      FIG. 5  is a plan view showing a cut out sheet of corrugated material used to construct the support braces of the present invention attached to the outside of the case showing the partial cuts forming fold lines and living hinges and the two cut outs of the table legs shown in position attached to the support braces corrugated sheet;  
         [0051]      FIG. 6A  is a plan view of a two-piece embodiment of the T-shaped hook of the present invention used to attach the case to a vehicle front seat headrest with the T-shaped hook portion aligned with the case attachment portion and showing the mating hook and loop fastener elements used to connect the two pieces and showing a bend line cut into one side of the T to allowing bending during insertion of the T between the vertical headrest supports;  
         [0052]      FIG. 6B  is a plan view of a two-piece embodiment of the T-shaped hook of  FIG. 6A  with the two pieces joined together;  
         [0053]      FIG. 6C  is a side elevational view of a one-piece embodiment of the T-shaped hook of the present invention used to attach the case to a vehicle front seat headrest showing one side of a slide attachment element on the back of the hook and a series of mating slide attachment elements vertically spaced on the back of the case to allow selective height adjusted placement of the hook on the case;  
         [0054]      FIG. 6D  is a front elevational view of the one-piece embodiment of the T-shaped hook of  FIG. 6C  showing a bend line cut into one side of the T to allowing bending during insertion of the T between the vertical headrest supports. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0055]     In  FIGS. 1-6 , a transportable activity case device  20  is used for storing, transporting and using child activity materials  23  in conjunction with a convertible table surface  24  housed therein for use in vehicles or on tables, floors or other horizontal surfaces.  
         [0056]     A rigid case  21  comprises a bottom  9 , a front wall  14  and  24 , a back wall  13  and two side walls  12  therebetween, all rigidly attached together to house an interior space  16 . The rigid case  21  has a top opening for accessing the interior space  16  and a cover  24  closable over the top opening, as in  FIG. 3 . The cover  24  forms a top section of the front wall and is pivotally attached to a stationary bottom section  14  of the front wall. An outer front brace surface  25  is provided which is pivotally attached along the bottom  14  of the front wall. The front brace surface  25  is bendable into a top front brace section  25 A and a bottom front brace section  25 B so that the front brace surface  25  moves between a first position flat against the front wall  14  and  24  and attached thereto for transporting or storing the carrying case  21  with the cover closed  24  over the top opening, as shown in  FIG. 3 , and a second position with the bottom front brace section  25 B pivoted at an angle away from the bottom section  14  of the front wall to leave adequate leg room under the supported table surface formed by the top surface of the cover  24  and the top front brace section  25 A extending horizontally away from the case  21  and the cover  24  pivoted forward into a horizontal position with an outer end of the cover  24  attached to an outer end of the front brace surface  25 A and the cover  24  resting on the horizontal top section of the front brace surface  25 A, so that the outer front brace surface  25 A supports the cover  24  and the cover  24  forms a supported table surface with the top portion of the front wall open for accessing the interior storage space  16 , as shown in  FIGS. 1 and 2 .  
         [0057]     The device  20  also comprises a T-shaped hook  28  or  28 A pivotally attached to a top portion of the back wall  13  for engaging a head rest  41  on a front seat  40 , as shown in  FIG. 1A , to secure the case device  21  to the front seat  40 . A means, such as mating hook and loop fasteners  50 A and  50 B or mating connectors  70  and  71 , is provided for adjusting the T-shaped hook  28  or  28 A to fit various vehicle front seat  40  heights while maintaining the table  24  height at an ergonomically efficient height for use by a child in a back seat.  
         [0058]     In  FIGS. 6A and 6B , the T-shaped hook  28  comprises an attaching segment  7  that attaches to the back wall  13  and a hook segment  8  overlapping the attaching segment  7 . The hook segment  8  is attachable to the attaching segment  7  by mating hook and loop fasteners  50 A and  50 B. The mating hook and loop fasteners  50 A and  50 B provide a means for attaching various components  7  and  8  of the device  20  together and also the means of adjusting the T-shaped hook  28  to fit various vehicle front seat  40  heights.  
         [0059]     In  FIGS. 6C and 6D , the T-shaped hook  28 A comprises a single element having a T-shaped hook end  8  to hook through a pair of upright supports  42  of a headrest  41  on the front seat  40  and an attaching end  7 . The means for adjusting the T-shaped hook  28 A to fit various vehicle front seat  40  heights comprises a connector  70  on the attaching end  7 , such as a sliding channel component attached thereto, and a series of mating connectors  71 , such as spaced mating sliding channel components, attached in a vertical spaced array to the back wall  13 .  
         [0060]     The device  20  further comprises a back brace surface  26  pivotally attached to a bottom of the back wall  13 . The back brace  26  surface is bendable into a top back brace section  26 A and a bottom brace section  26 B, as shown in  FIG. 1 . The back brace surface  26  is pivotable between a first position flat against the back wall  13  and attached thereto for transporting or storing the carrying case  21  with the cover  24  closed over the top opening, as in  FIG. 3 , and a second position with the bottom back brace section  26 B pivoted at a right angle away from the bottom of the back wall  13  and the top back brace section  26 A pivoted toward the back wall  13  and attached thereto to form a triangulated brace  26  for maintaining the case  21  in an upright position by keeping the bottom  9  of the case  21  away from the angled back of the front seat  40 , as in  FIG. 1 . When the device  20  is closed, as in  FIG. 3 , the cover  24  may be secured by mating snaps  15 , shown in  FIG. 4 , or alternately a hook and loop fastening system (not shown).  
         [0061]     The device  20  further comprises a pair of table surface support legs  18  that may extend beneath the table surface  24 . The table surface support legs  18  are provided with an attached support strap  17  for an alternative use of the table surface  24  with the bottom  9  of the case  21  and the back brace surface  26  resting on an external horizontal surface and the table surface support legs  18  engaging the external horizontal surface for stability, as shown in  FIG. 2 .  
         [0062]     The walls and braces  9 ,  12 ,  13 ,  14 ,  22 ,  24 ,  25 ,  26 , and  28  of the device  20  are fabricated from a corrugated plastic material having a series of partial cuts therethrough to form the hinged connections  10  and to enable bending to form intersecting walls and bottom for a lightweight sturdy structure. The corrugated material of the table surface  24  is covered with a smooth fabric material. The corrugated material is covered with a padded polyurethane foam coated material to add a soft cushion feel and further coated with a rugged weather resistant material on outside surfaces.  
         [0063]     The device  20  also comprises one or more panels  22  having a front side and a back side, the front side of the panel(s)  22  supporting an array of child activity implements  23  removably attached thereto by means such as hook and loop fastening systems, snaps, elastic loops, adhesively attached hook and loop fastening patches, or other fastening means. The back side of the panel(s)  22  comprises a means of attaching the back side of the panel  22  to an interior of the back wall  13  to maintain the panel  22  in a vertical orientation for easy access to the child activity implements  23 . Preferably, the means for attaching the back side of the panel  22  to an interior of the back wall  13  comprises the interior of the back wall  13  being covered with a material forming a loop side of a mating hook and loop fastener (not shown) and the back side of the panel(s)  22  to be covered with a piece of material bearing a mating hook portion of the mating hook and loop fastener. Alternately, the means for attaching the back side of the panel  22  to an interior of the back wall  13  may comprise hook and loop fastening systems, snaps, elastic loops, adhesively attached hook and loop fastening patches, or other fastening means.  
         [0064]     The device  20  further comprises one or more loop means  27 A,  27 B, and  27 C for attaching a strap to each of the side walls  12 , as shown in  FIG. 3 , to attach a carrying strap  19  therebetween for use in transporting the device  20 . An attaching strap  19 A, adjustable in length is with a movable buckle  5 , may be used to assist in securing the device  20  to the vehicle seat which has no headrest supports by tightening the attaching strap  19 A around the seat.  
         [0065]     In  FIG. 3 , a handle  60  on a top surface of the rigid case in the first position with the case closed is used in transporting the device by hand. A pair of straps  19  each attached between a metal or plastic loop  27 A on each side of the handle  60  and a bottom side metal or plastic loop  27 C on a side of the rigid case for carrying the device with the pair of straps  19  over the shoulders of a user in a backpack configuration. One of the straps  19  may alternately be attached between the two top side loops  27 B for use as a shoulder strap in place of the attaching strap  19 A or the attaching strap  19 A used as a shoulder strap for carrying the case.  
         [0066]     In practice, the activity case  20  is attached to the back side of a front seat  40  by a T-shaped hook  28  or  28 A. The T-shaped hook  28  or  28 A is pivotally attached to a top portion of the back wall  13  and engages the support posts  42  of a head rest  41  on the front seat  40 , as shown in  FIG. 1A . The T-shaped hook device  28  or  28 A is made from corrugated plastic material and has a T-shaped hook end  8  with a living hinge  10  formed therein, as shown in  FIGS. 6A-6D , which allows the user to bend a leg of the T-shaped hook end  8  to fit through the support posts  42  of the head rest  41 , after which the T-shaped hook end  8  would be restored to its original flat position to provide support against the support posts  42  of the head rest  41 . Mating hook and loop fasteners  50 A and  50 B, shown in  FIGS. 6A and 6B  or mating connectors  70  and  71 , shown in  FIGS. 6C and 6D , are employed to adjust the T-shaped hook  28  or  28 A to fit various vehicle front seat  40  heights while maintaining the table  24  height at an ergonomically efficient height for use by a child in a back seat.  
         [0067]     Most front seats  40  in automobiles recline at varying angles to provide the drivers and passengers with proper comfort. This seat angle can have a negative effect on the activity case  20  and backseat user as it hangs from the front seat  40 . To compensate for varying seat  40  angles, the activity case  20  is provided with a hinged panel  26  located on the backside of the case  21  near the bottom. When the panel  26  is detached from the outer side of the back wall  13  and slid downward, the two hinges in the middle of the panel  26  bend so that with a bottom section  26 C bent away from the rigid case and a top section  26 C bent back toward the rigid case, a small vertical seat contacting section  26 B is formed between the top and bottom sections  26 A and  26 C and with a top of the top section  26 A secured to the rigid case, the three sections  26 A,  26 B, and  26 C extend back away from the back panel  13  to create a brace  26 , as in  FIGS. 1 and 2 . This brace  26  will push against the seatback  40  and allow the case  21  to maintain a position perpendicular to the floor of the vehicle, as in  FIG. 1 .  
         [0068]     The front of the case  21  consists of two panels, the outer panel  25  used as a brace, and the inner panel  24  that acts as the table surface when deployed, as in  FIGS. 1 and 2 . The table panel  24  also acts as an enclosure when the attachment panel  28  is being used to secure the case  21  to the headrest  41 . The lid  24  is secured to the top of the case  21  by metal snap fasteners  15 , or alternately hook and loop fasteners (not shown), so it may be stowed when not in use, thereby covering the top of the case  21  and preventing items from falling out during travel.  
         [0069]     The fold-out table  24  is pulled forward toward the user after being released from the snap fasteners  15 , or alternately hook and loop fasteners (not shown), and aligned with the mating snap fasteners  15  on the brace panel  25 . This alignment should produce a level surface and enough strength to support normal pressure exerted by a child when writing.  
         [0070]     To use the portable activity case  20  outside of a vehicle on a horizontal surface such as a table or a floor, a pair of table surface support legs  18  are extended beneath the table surface  24 . The table surface support legs  18  are provided with an attached support strap  17 , which prevent the legs  18  from being over extended. The bottom  9  and the back brace surface  26  rest on the external horizontal surface and the table surface support legs  18  engage the external horizontal surface to provide further stability and to hold the case  20  perpendicular to the horizontal surface, as shown in  FIG. 2 .  
         [0071]     The case  21  is preferably made of plastic corrugated material, which is strong, flexible, lightweight, and can be fabricated so that “living” hinges  10  may be produced in virtually any area of the material. The plastic corrugated material has a similar design to cardboard, where there is an upper and lower layer of plastic film with vertical “flutes” positioned vertically between the two layers to provide strength. The plastic corrugated can be scored partially through the top layer and flutes, preferably cut across the direction of the flutes, which flute direction is indicated by the two headed arrow of  FIGS. 4 and 5 , allowing only the lower layer of plastic to remain and act as the living hinge  10  when flexed. This hinge  10  will only flex 180 degrees.  
         [0072]     Living hinges  10  are used in the case  21  as normal usage requires various sections  24 ,  25 ,  26 , and  28  to open and close many times without the need for attaching a pre-fabricated hinge in these areas. The plastic corrugated material is preferably produced with 100% Polypropylene which provides a strong hinge  10 , actually providing greater strength over time. This material will also flex when it is subjected to high loads, providing excellent safety features if a person comes in contact with the activity case  20  during a collision. The material bends and does not shatter or produce any sharp edges to could cause harm.  
         [0073]     To produce a soft surface for the portable activity case  20 , several fabric types (polyester knit, nylon, etc.) will be used to cover the entire surface of the plastic corrugated material. The fabric will be laminated with polyurethane foam, approximately 0.125″ thick to add a “cushion-like” feel.  
         [0074]     Both inside and outside surfaces of the activity case  20  may be covered with foam (polyurethane) laminated polyester knit and suede materials. Preferably, a special VELCRO compatible material is used on the front surface of the activity implement support panel(s)  22  to allow the use of mating VELCRO products (not shown) which hold various child activity implements  23  or accessory trays (not shown) filled with markers and crayons  23 . Any fabric material that meets the Federal Motor Vehicle Safety Standard 302 (Flammability) can be used. Alternately, the various child activity implements  23  or accessory trays (not shown) filled with markers and crayons  23  may be held in place by means such as hook and loop fastening systems, snaps, elastic loops, adhesively attached hook and loop fastening patches, or other fastening means.  
         [0075]     During manufacturing, the case  21  may be die-cut from plastic corrugated material sheet stock to the size required for each panel component  9 ,  12 ,  13 ,  14 ,  22 ,  24 ,  25 ,  26 , and  28 . The living hinges  10  will be scored in the die cutting operation as will other folded (non-hinge) sections. Once the panels  9 ,  12 ,  13 ,  14 ,  22 ,  24 ,  25 ,  26 , and  28  are cut, a 3M spray adhesive is used to join the fabric to the plastic corrugated material. A fabric binder (edging) is then sewn around the perimeter of the cut parts with needle piercing completely through the 6 mm plastic. Metal industrial snap fasteners  15  are then crimped on the parts at various locations. Each section is then assembled together with a combination of rivets and screws  11  to achieve the final configuration.  
         [0076]     Preferably, the case  21  is approximately 14 inches wide, 14 inches tall and 3.5 inches deep. The table  24  extends approximately 11 inches and is approximately 14 inches wide.  
         [0077]     It is understood that the preceding description is given merely by way of illustration and not in limitation of the invention and that various modifications may be made thereto without departing from the spirit of the invention as claimed.