Abstract:
The present apparatus relates generally to a height adjustable support tray apparatus and accessories, and more particularly to an improved height adjustable support tray apparatus to provide a portable working surface. Particularly the instant apparatus includes a unique attaching section which securely attaches the instant apparatus to the selected support structure. The instant apparatus, when attached to the applicable support structure, provides a broadly useable working surface on which to support various items. The instant apparatus includes a variety of repositioning elements thereby allowing users a multitude of adjustments of the angle and position of the working surface. The instant apparatus also includes support elements which greatly increases the load carrying capacity of the working surface over minimally supported or non-supported working services.

Description:
FIELD OF THE APPARATUS 
       [0001]    The present apparatus relates generally to a height adjustable support tray apparatus and accessories, and more particularly to an improved height adjustable support tray apparatus to provide a portable working surface. 
       BACKGROUND OF THE INVENTION 
       [0002]    Travelling workers often require a portable working surface on which to support various items such as testing and diagnostic equipment, programmer, computers, writing utensils, tools, medicine, books, lamp, multimedia components, personal items, food and beverages, etc. 
         [0003]    Often work sites provide limited working space accommodations which may not include the working surface needed by the travelling worker. In route to and from the work site travelling workers must navigate a myriad of logistical obstacles such as lifting and carry cumbrous items, negotiating security screening areas, and setting up and dismantling their own work equipment. Travelling workers must therefore provide their own working surfaces while limiting their transportation and logistics burdens. 
         [0004]    It is understood similar burdens are faced by a broad cross-section of users who need a portable working surface on which to support various items, including students, vendors, families, individuals, groups, corporations etc. 
         [0005]    U.S. Pat. No. 1,534,095 to Walker discloses a tray and support therefor. 
         [0006]    U.S. Pat. No. 3,125,040 to Roberson discloses a car tray. 
         [0007]    U.S. Pat. No. 6,604,472 to McNeil discloses a laptop computer support table. 
         [0008]    U.S. Pat. No. 6,736,073 to Ryburg discloses a work surface for luggage and luggage carriers. 
         [0009]    U.S. Pat. Application Pub No. 20040226791 A1 to Levy discloses a convertible laptop PC bag to workstation with legs. 
         [0010]    U.S. Pat. Application Pub No. 20080134946 A1 to Alonso discloses a removable table top attached to a rolling container and method of attaching the table top. 
         [0011]    U.S. Pat. Application Pub No. 20100236884 A1 to Brown discloses a luggage table. 
         [0012]    U.S. Pat. Application Pub No. 20120325607 A1 to Webster et al. discloses a transport device having a convertible work surface. 
         [0013]    Reference to, and discussion of, the foregoing patents is intended to aid in discharging Applicant&#39;s acknowledged duty of candor in disclosing information that may be relevant to the examination of claims to the present apparatus. However, it is respectfully submitted that none of the above-indicated patents disclose, teach, suggest, show, or otherwise render obvious, either singly or when considered in combination, the apparatus described and claimed herein. 
       SUMMARY OF THE APPARATUS 
       [0014]    It is therefore an object of the present invention/apparatus to provide an improved height adjustable support tray apparatus to provide a portable working surface. 
         [0015]    As presented in the exemplary configurations herein, the height adjustable support tray apparatus is configured for attachment to a support structure (also referred to herein as a support item) such as a portable luggage item. 
         [0016]    It is understood that the height adjustable support tray apparatus of the instant apparatus can be attached to a wide variety of support items or support structures—including fixed or mobile items. For example the instant apparatus can be attached to a wall, bed, post, rail, vehicle, suitcase, luggage, site equipment, similar apparatus as the instant apparatus, a temporary support structure, or even a moving support structure. 
         [0017]    Particularly the instant apparatus includes a unique attaching section which securely attaches the instant apparatus to the selected support structure. 
         [0018]    The instant apparatus, when attached to the applicable support structure, provides a broadly useable working surface on which to support various items. 
         [0019]    The instant apparatus includes a variety of repositioning elements thereby allowing users a multitude of adjustments of the angle and position of the working surface. 
         [0020]    The instant apparatus also includes support elements which greatly increase the load carrying capacity of the working surface over minimally supported or non-supported working services such as some of the inventions disclosed in the foregoing patents. 
         [0021]    Importantly, the instant invention is configured for portability and as disclosed herein, the instant invention can be stored and transported within an item such as a luggage item. When needed, the instant invention can be attached to that same transporting item to provide a working surface. Using the instant invention, this portable working surface can benefit from the support provided by, for example, the luggage item (or other support item) as well as the support provided by support elements of the instant invention. 
         [0022]    Further, it is understood a variety of components and accessories can be further attached to the instant invention including electrical accessories, user specific work tools, work specific user tools, as well as interconnecting components for attaching a plurality of height adjustable support tray apparatus or similar items together. 
         [0023]    Other novel features which are characteristic of the apparatus, as to organization and method of operation, together with further objects and advantages thereof will be better understood from the following description considered in connection with the accompanying FIGS., in which preferred embodiments of the apparatus are illustrated by way of example. It is to be expressly understood, however, that the FIGS. are for illustration and description only and is not intended as a definition of the limits of the apparatus. The various features of novelty which characterize the apparatus are pointed out with particularity in the claims annexed to and forming part of this disclosure. The apparatus resides not in any one of these features taken alone, but rather in the particular combination of all of its structures for the functions specified. 
         [0024]    There has thus been broadly outlined the more important features of the apparatus in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional features of the apparatus that will be described hereinafter and which will form additional subject matter of the claims appended hereto. Those skilled in the art will appreciate that the conception upon which this disclosure is based readily may be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present apparatus. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present apparatus. 
         [0025]    Further, the purpose of the Abstract is to enable the national patent office(s) and the public generally, and especially the scientists, engineers and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application. The Abstract is neither intended to define the apparatus of this application, which is measured by the claims, nor is it intended to be limiting as to the scope of the apparatus in any way. 
         [0026]    Certain terminology and derivations thereof may be used in the following description for convenience in reference only, and will not be limiting. For example, words such as “upward,” “downward,” “left,” and “right” would refer to directions in the drawings to which reference is made unless otherwise stated. Similarly, words such as “inward” and “outward” would refer to directions toward and away from, respectively, the geometric center of a device or area and designated parts thereof. References in the singular tense include the plural, and vice versa, unless otherwise noted. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0027]    The apparatus will be better understood and objects other than those set forth above will become apparent when consideration is given to the following detailed description thereof. Such description makes reference to the annexed drawings, wherein: 
           [0028]      FIG. 1A  is a perspective view of the height adjustable support tray apparatus. 
           [0029]      FIG. 1B  is a perspective view of the height adjustable support tray apparatus. 
           [0030]      FIG. 1C  is a perspective view of the height adjustable support tray apparatus. 
           [0031]      FIG. 1D  is a perspective view of the height adjustable support tray apparatus. 
           [0032]      FIG. 1E  is a perspective view of the height adjustable support tray apparatus. 
           [0033]      FIG. 2  is a bottom view of the height adjustable support tray apparatus. 
           [0034]      FIG. 3  is a bottom view of the height adjustable support tray apparatus. 
           [0035]      FIG. 4  is a bottom view of the height adjustable support tray apparatus. 
           [0036]      FIG. 5  is a perspective view of the tray apparatus stored in a luggage item. 
       
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
       [0037]    As described below, the multiplicity of adjustable and pivotal features work in conjunction with each other to maximize the unique functionality of the instant apparatus. 
         [0038]    While the preferred height adjustable support tray apparatus is presented herein, it is understood alternate embodiments may encompass trays differently configured as generally used within the applicable industry or by the specific user. 
         [0039]    Generally the instant apparatus presents a height adjustable support tray apparatus  100  which is attachable to a support item  700  such as a luggage item  705 . The height adjustable support tray apparatus  100  includes at least a support platform  200 , an attaching section  300 , and support legs  500 . The height adjustable support tray apparatus  100  and further include, inter alia, at least one support brace  400 . 
         [0040]    With reference to  FIGS. 1A-1E, and 2-5  the exemplary, but non-limiting usage of the height adjustable support tray apparatus  100  is shown wherein the support item  700  is a luggage item  705  which includes a luggage handle  720 . 
         [0041]    As will be explained below, the height adjustable support tray apparatus  100  generally operates in a non-use, stored, or folded position wherein the apparatus  100  is unattached to the support item and an in-use position wherein the apparatus  100  is attached at least partially to the support item. 
       Support Platform 
       [0042]    As shown at least in  FIGs. 1A-1D , the height adjustable support tray apparatus&#39; support platform  200  includes a top side  201 , a bottom side  202 , an attachment edge  203 , and a support edge  204  distal from the attachment edge  203 . Top side  201  is generally a flat firm surface for supporting devices such as computers, work equipment, a printer, computer/programmer accessories such as a wand, mouse, keyboard, and various other items including nuts, bolts, screws, needles, syringes, etc. Alternatively top side  201  (and any area of the support platform  200 ) can be made of flexible or supple material such as a padded, or malleable cover made of plastic, leather, or other known materials. Further, while not shown, it is anticipated that the top side  201  (and any area of the support platform  200 ) may be shaped or formed into a variety of patterns and may include elements such as ridges, protrusions, channels, and openings. 
         [0043]    Additionally while possibly not shown, it is anticipated any area of the height adjustable support tray apparatus  100  may be complemented with attaching devices, components, or structures such as an accessory tray (not shown) or shelf (not shown) positioned above or below the support platform  200 . 
       Attaching Section 
       [0044]    The attaching section  300  is positioned on the support platform bottom side  202  proximal to the attachment edge  203 . The attaching section  300  includes at least one attachment section clamp  305  and at least one attachment section stop  310 . 
         [0045]    Preferably, the attachment section includes a pair of clamps  305  and a pair of stops  310  as shown in  FIGs. 2-5 . 
         [0046]    Each attaching section clamp  305  is generally a channel or C-shaped formed to securely hold items positioned within the clamp  305 . Each clamp  305  may be made from a variety of known materials including rubber, metal, or plastic, as well as from any suitable combination of materials. Each clamp  305  shape may include a single or plurality of shaped portions suitable for clamping, grasping, holding, or supporting items positioned within the clamp  305 . 
         [0047]    Each attaching section clamp  305  is sized to allow movement (sliding and/or rotation) as needed with respect to the support item  700 . For example, the luggage handle  720  may slide or rotate while held within the clamp  305  as the handle  720  is raised or lowered. 
         [0048]    Each attachment section stop  310  is preferably a rectangular block-shape formed to securely abut items positioned within an attaching section clamp  305 . 
         [0049]    In the preferred embodiment as shown in  FIGs. 2-5  the attachment section stops  310  are repositionably attached to the support platform bottom side  202 . By being repostionable a stop  310  can be positioned, such as by rotation, to abut a support item  700  positioned within an attaching section clamp  305  and thereby helps securely hold and inhibit lateral movement of the support item  700 . Alternatively a stop  310  can be positioned, such as by rotation, to not abut a support item  700  positioned within an attaching section clamp  305  and thereby not interfere with movement of the support item  700 . The repostionable movement of each stop  310  can be provided by pivotally, slideably, or rotationally attaching the stop  310  to the support platform bottom side  202  such as with a pin, bolt, slot, clamp, or other known fastening method. 
         [0050]    Each stop  310  may be fixedly or removeably attached to the support platform bottom side  202 . Where unneeded stop(s)  310  can be omitted or removed. 
       Exemplary Usage of Attaching Section 
       [0051]    When the height adjustable support tray apparatus is in the in-use position, as shown in the exemplary, but non-limiting usage of  FIG. 1A  and ID, the attaching section  300  is positioned on a portion of the support item  700 . 
         [0052]    When the height adjustable support tray apparatus  100  is in the non-use position, as shown in the exemplary, but non-limiting usage of  FIG. 1B, and 1C , the attaching section  300  is not positioned on a portion of the support item  700 . 
         [0053]    As shown in  FIG. 1A , in the in-use position the attaching section clamp  305  is positioned atop the luggage handle  720  (any other similar support item  700  may be positioned here) and at least one attachment section stop  310  abuts the luggage handle  720  (or other similar support item  700 ) to inhibit lateral movement of the support item  700  while within the attaching section clamp  305 . As shown in  FIG. 2-5  at least one additional attachment section stop  310  is preferably provided to further inhibit lateral movement of the support item  700  while within the attaching section clamp  305 . The attachment section stops  310  can be selectively repositioned away from the support item  700  as needed to free up movement of the support item  700 . 
       Support Brace 
       [0054]    The at least one support brace  400 , as shown in  FIGs. 1A-5  is positioned on the support platform bottom side  202  approximately midway between the attachment edge  203  and the support edge  204 . It is envisioned that the support brace  400  could be positioned anywhere on the support platform  200  including the top side  201  as well as along any side edge of the support platform  200 . 
         [0055]    The support brace  400  is optionally provided to interconnect the support platform  200  with the support item  700  and provide sturdier support. As shown in the exemplary, but non-limiting usage of  FIG. 1A , the support brace  400  can be attached to support item  700  elements such as an arm  710  of luggage item  705 . 
         [0056]    The support brace  400  includes a brace first section  400   a  pivotally connected to a brace second section  400   b  by a pivot  400   c . The pivot  400   c  allows the support brace first section  400   a  and the support brace second section  400   b  to rotate with respect to each other. The support brace  400  also includes a brace lock element  400   d  to secure the brace first section  400   a  and brace second section  400   b  in a locked position. In the preferred embodiment brace lock element  400   d  is a protrusion provided on either the brace first section  400   a  or brace second section  400   b  to seat the applicable other brace section when that brace section is rotated into the locked position. Alternatively the lock tab  400   d  may be a pin, clamp, wire, or other known locking mechanism. 
         [0057]    The support brace  400  further includes a clincher  415  pivotally connected to the second section  400   b  by a hinge  410 . Clincher  415  is generally C-shaped formed to securely hold items positioned within the clincher  415 . The clincher  415  may be made from a variety of known materials including rubber, metal, or plastic, as well as from any suitable combination of appropriate materials. The clincher  415  shape may include a single or plurality of shaped portions suitable for clamping, grasping, holding, or supporting items positioned within the clincher  415  such as arm  710  of luggage item  705  as shown in  FIG. 1A . Hinge  410  allows clincher  415  to rotate with respect to second section  400   b.    
         [0058]    The support brace first section  400   a  is pivotally connected on the support platform bottom side  202  by mount  420  which allows the support brace first section  400   a  (and thereby the entire support brace  400 ) to rotate with respect to the support platform bottom side  202 . The support brace mount  420  may include a pin or bolt or other known mechanism fixedly or removeably provided to pivotally connect the support brace  400  to the support platform  200 . 
         [0059]    As shown at least in  FIG. 1A-1B , and  FIG. 2 , the support brace  400  is fixedly or slidably attached to the support platform bottom side  202  via support brace mount  420 . When the support brace  400  slidably attaches the support brace  400  to the platform  200  this allows the angle between the support brace first section  400   a  and second section  400   b  to variably adjust with respect to platform  200 . When coupled with the variably extending length of the support leg(s)  500  the platform  200  can be readily repositioned by sliding the support brace mount  420  along the support platform  200  via applicable support brace mount  420  and/or via adjusting the length of the applicable support leg(s)  500 . When slidably attached to the support platform bottom side  202 , support brace mount  420  traverses a groove (not shown) or path (not shown) in the surface of the support platform bottom side  202  when the support brace mount  420  is loosened from the support platform bottom side  202  and remains in a fixed position within the groove or path when the support brace mount  420  is tightened against the support platform bottom side  202 . 
       Support Leg(s) 
       [0060]    At least one support leg  500  is pivotally attached to the support platform  200  approximate the support edge  203 . Each support leg  500  is pivotally and removably fastened to the support platform bottom side  202  by a support clip  600 . Support leg(s)  500  can be a fixed length or can include multiple leg segments such as first leg segment  506   a  and second leg segment  506   b  which may be fixedly or removably interconnected to each other. For example, first leg segment  506   a  may be telescopically connected to second leg segment  506   b . Further either or both leg segments  506   a ,  506   b  may be telescopically, rotatably, or foldably extendable and include additional length segments. 
         [0061]    As shown in the exemplary, but non-limiting usage of  FIG. 1A-5 , the height adjustable support tray apparatus  100  may include a pair of support legs  500  however it is envisioned the apparatus can have a single support leg  500 . 
         [0062]    Each support leg  500  may include footer  550  made from a variety of known materials including rubber, metal, or plastic, as well as from any suitable combination of appropriate materials. Each support leg  500 , whether or not it includes the support leg footer  550 , is provided to support the height adjustable support tray apparatus  100  on a variety of surfaces including a floor, bed frame, alternate structure, a portion of support item  700  (also referred to herein as a support structure), a wall, a tire, etc. 
         [0063]    Each support leg  500  may be shaped the same or differently and may include for example a “Y” shape (not shown), amongst other configurations, wherein a pair of support clips  600  is provided on support platform bottom side  202 , each having each support leg  500  wherein the pair of support legs are merged together to form a single support leg. Further, each support leg  500  may further include a supplemental leg extension (not shown) which provides an additional support to the height adjustable support tray apparatus  100  on a variety of surfaces. The supplemental leg extension may extend from a side of the support leg  500  or be positioned on or beneath the support leg  500  or support leg footer  550  or both. 
         [0064]    Each support leg  500  is further connectable to the support platform bottom side  202  by a link  430  which includes a link first section  435   a , a link second section  435   b , a link lock element  435   c , a link pivot  435   d , and a link end nub  435   e  provided at an end of the link second section  435   b.    
         [0065]    Each link  430  is fixedly or slidably attached to the support platform bottom side  202  via a link mount  440   b . Link mount  440   a  is essentially the same as link mount  440   b  and may be used in place of or in addition to link mount  430   b . It is understood that further links  430  may employ additional link mounts as required. When the link mount  440   b  slidably attaches the support leg(s)  500  to the platform  200  this allows the angle between the support leg(s)  500  and the platform  200  to variably adjust. When coupled with the variably extending length of the support leg(s)  500  the platform  200  can be readily repositioned by sliding each link  430  along the support platform  200  via applicable link mount  440   b  and or via adjusting the length of the applicable support leg(s)  500 . When slidably attached to the support platform bottom side  202 , link mount  440   b  traverses a groove (not shown) or path (not shown) in the surface of the support platform bottom side  202  when the link mount  440   b  is loosened from the support platform bottom side  202  and remains in a fixed position within the groove or path when the link mount  440   b  is tightened against the support platform bottom side  202 . 
         [0066]    The link first section  435   a  is pivotally connected to the link second section  435   b  by link pivot  435   d . Link pivot  435   d  allows the link first section  435   a  and the link second section  435   b  to rotate with respect to each other. The link lock element  435   c  secures the link first section  435   a  and the link second section  435   b  together in a locked position. In the preferred embodiment link lock element  435   c  is a protrusion provided on either the link first section  435   a  or the link second section  435   b  to seat the applicable other link section when that link section is rotated into the locked position. Alternatively the link lock element  435   c  may be a pin, clamp, wire, or other known locking mechanism. 
         [0067]    Each support leg  500  may include at least one hole  510  for removably receiving the link end nub  435   e  of the link second section  435   b . A plurality of support leg holes  510  may be provided. In the in-use position of the height adjustable support tray apparatus  100 , by inserting the link end nub  435   e  into a selected support leg hole  510  the support leg  500  is interconnected to the support platform  200  via support leg link  430  thereby providing a sturdy buttress for the support platform  200 . 
         [0068]    As shown in the exemplary, but non-limiting usage of  FIG. 1B  plurality of support leg holes  510  is be provided, some which extend through the leg segments  506   a ,  506   b  and some which do not. Note that when the link end nub  435   e  is inserted into the support leg holes  510  a portion of the link end nub  435   e  may extend through the leg segments  506   a ,  506   b.    
         [0069]    Each support leg clip  600  is generally C-shaped formed to securely hold items positioned within the clip  600 . Each clip  600  may be made from a variety of known materials including rubber, metal, or plastic, as well as from any suitable combination of materials. Each clip  600  shape may include a single or plurality of shaped portions suitable for clamping, grasping, holding, or supporting items positioned within the clip  600 . 
         [0070]    Each clip  600  is sized to allow movement (sliding and/or rotation) as needed with respect to the applicable support leg  500 . For example, as the handle  720  is raised or lowered or the support leg(s)  500  are raised, lowered, or rotated, the support leg(s)  500  can move within each clip  600  as applicable. 
       General Usage and Storing 
       [0071]    When the height adjustable support tray apparatus is in the in-use position, as shown in the exemplary, but non-limiting usage of  FIG. 1A  and ID, the attaching section  300  is positioned on a portion of the support item  700 , at least one support leg  500  is attached to the support platform  200 , and each applicable link  430  is locked in place further interconnecting the each applicable leg  500  to the support platform  200 . If desired the support brace  400  is optionally employed to interconnect the support platform  200  with the support item  700 . Users can then safely position the height adjustable support tray apparatus  100  as needed. 
         [0072]    Users can adjust the height of the support platform  200  by extending the applicable leg(s)  500  while also adjusting the height of the support item  700  such as by raising or lowering the height of the handle  720  of a luggage item  705 . 
         [0073]    When the height adjustable support tray apparatus  100  is in the non-use position, the leg(s)  500  are disconnected from the support platform  200  and the link(s)  430  as well as the support brace  400  are folded down against the support platform bottom  202  thereby providing a compact apparatus  100  which can be stored within a section of the luggage item  705  along with any leg(s)  500  or put unobtrusively away. 
       Exemplary Configuration 
       [0074]    In an exemplary configuration a height adjustable support tray apparatus is provided for support by a supporting structure having a handle portion, the apparatus comprising: a support platform having a top side, a bottom side, an attachment edge, and a support edge; an attachment section positioned on the support platform bottom side approximate the attachment edge; at least one support brace positioned on the support platform bottom side, the at least one support brace interconnecting the support platform bottom side with the supporting structure; and at least one support leg pivotally attached to the support platform approximate the support edge. 
         [0075]    Additionally, as relates to the above exemplary configuration, wherein the supporting structure further includes at least one handle pole extending from the supporting structure handle portion: in an in-use position of the tray apparatus, the at least one attachment section is positioned over the supporting structure handle portion; the at least one support brace is positioned on the supporting structure at least one handle pole; and the at least one support leg extends to a supporting surface. 
         [0076]    Additionally, as relates to the above exemplary configuration, wherein the attachment section includes at least one attachment channel for seating the supporting structure handle portion, and the attachment section further includes at least one securing block for releasably abutting the supporting structure handle portion when seated in the attachment section, wherein in the in-use position the at least one securing block abuts the handle portion to inhibit movement of the handle portion when seated in the attachment section, and wherein in a non-use position the at least one securing block does not abut the handle portion. 
       Additional Exemplary Configuration 
       [0077]    In an additional exemplary configuration a height adjustable support tray apparatus is provided for support by a supporting structure having a handle portion and at least one handle pole extending from the handle portion, the tray apparatus comprising: a support platform having a top side, a bottom side, an attachment edge, and a support edge; at least one support leg removably and pivotally attached to the support platform approximate the support edge; an attachment section positioned on the support platform bottom side approximate the attachment edge, the attachment section including at least one attachment channel for seating the supporting structure handle portion, said attachment section including at least one securing block for releasably abutting the supporting structure handle portion; a respositionable support brace mount attaching an at least one support brace to the support platform bottom side, the at least one support brace interconnecting the support platform bottom side with the supporting structure, wherein the respositionable support brace mount allows the at least one support brace to variably adjust its position with respect to the support platform bottom side; a respositionable link mount which removably, pivotally, and repositionally attaches each the at least one support leg to the support platform bottom, wherein the respositionable link mount allows the at least one support leg to variably adjust its position with respect to the support platform bottom side; wherein in an in-use position: the at least one attachment section is positioned over the supporting structure handle portion; the at least one support brace is positioned on the supporting structure at least one handle pole; the at least one support leg extends to a supporting surface; the at least one securing block abuts the supporting structure handle portion to inhibit movement of the supporting structure handle portion when seated in the attachment section, and wherein in a non-use position the at least one securing block does not abut the supporting structure handle portion. 
         [0078]    The foregoing disclosure is sufficient to enable one having skill in the art to practice the apparatus without undue experimentation, and provides the best mode of practicing the apparatus presently contemplated by the inventor. While there is provided herein a full and complete disclosure of the preferred embodiments of this apparatus, it is not intended to limit the apparatus to the exact construction, dimensional relationships, and operation shown and described. Various modifications, alternative constructions, changes and equivalents will readily occur to those skilled in the art and may be employed, as suitable, without departing from the true spirit and scope of the apparatus. Such changes might involve alternative materials, components, structural arrangements, sizes, shapes, forms, functions, operational features or the like. Elements of the instant apparatus may be made from a variety of known materials including wood, rubber, metal, or plastic, as well as from any suitable combination of appropriate materials. 
         [0079]    Accordingly, the proper scope of the present apparatus should be determined only by the broadest interpretation of the appended claims so as to encompass all such modifications as well as all relationships equivalent to those illustrated in the drawings and described in the specification.