with reference now to the drawings , and in particular to fig1 through 5 thereof , a new sliding desk accessory support embodying the principles and concepts of the present invention and generally designated by the reference numeral 10 will be described . as best illustrated in fig1 through 5 , the sliding desk accessory support assembly 10 generally comprises support means , or a support 12 , for supporting an accessory , and slider means , or a slider 14 , for mounting the support means on the underside of a desk 2 in a manner permitting substantially linear movement of the support with respect to the desk . the slider is positioned between the support surface of the support and an underside 4 of the desk when the slider is mounted on the desk . the sliding desk accessory support assembly 10 is adapted for mounting on the underside 4 of a desk 2 having a forward edge 6 such that the accessory may be selectively slid between positions in front of , and behind , the forward edge of the desk . the support 12 has a support surface 16 for resting the accessory thereon . the support 12 includes a primary support structure 18 , which is especially suitable for supporting accessories such as , for example , computer keyboards , calculators , beverage containers , and other accessories that may need to be frequently accessed but would otherwise clutter an upper surface of a desk . the primary support structure 18 may comprise a lower panel 20 having the support surface 16 thereon , an upper panel 22 , and a pair of side panels 24 , 25 extending downwardly from the upper panel . the lower panel 20 extends between and is mounted on the side panels 24 , 25 in a spaced condition from the upper panel 22 . the side panels 24 , 25 may be positioned in a spaced , substantially parallel condition . the side panels 24 , 25 may be positioned in a substantially perpendicular relationship with respect to the upper and lower panels . optionally , a front panel 21 may be attached to a forward edge of the lower panel 20 to prevent movement of items , such as a keyboard , past the forward edge of the lower panel . the side panels 24 , 25 each have a forward edge 26 , 27 , and optionally a portion of the lower panel extends forwardly of the front edges of the side panels such that the support surface extends forward of an interior formed by the upper and side panels . as a further option , the forward edges of the side panels may slope downwardly and forwardly from the upper panel to the lower panel . optionally , a ledge panel 28 , 29 may be provided that extends inwardly from each of the side panels 24 , 25 toward the opposite side panel . the lower panel 20 is rested on and spans between the ledge panels of the side panels . each of the ledge panels may be mounted to the respective side panel adjacent to a lower edge of the side panel . as yet a further option , the support surface 16 on the lower panel may have a depression 30 formed therein for receiving a lower portion of a beverage container 8 to resist slippage of the container with respect to the support surface . the depression may be substantially circular . the depression has a bottom face 32 . the depression may include an annular shoulder 34 located between the bottom face 32 and the support surface 16 , such that the bottom face has first , relatively smaller diameter , and the annular shoulder has a second , relatively larger diameter . by this structure , containers of various diameter sizes may be accommodated by the depression , with the container resting on the bottom face or on the annular shoulder . the support 12 of the invention may include a computer cursor control device support structure 36 for supporting a computer cursor control device such as , for example , a mouse , trackball , or touchpad . the control device support structure 36 may be mounted on the primary support structure 18 . the control device support structure preferably extends laterally from the primary support structure . the control device support structure may comprise a depending panel 38 and a cantilever panel 39 . the depending panel may be mounted on the primary support structure , and depend downward from the primary support structure . the depending panel 38 may be fastened to one of the side panels of the primary support structure . illustratively , a plurality of fasteners may pass through the depending panel and the one side panel of the primary support structure . the cantilever panel 39 extends from the depending panel , and preferably may extend in a substantially perpendicular relationship with respect to the depending panel . the slider 14 has a top 40 mountable on the undersurface of the desk , and also has a bottom 42 mounted on the support . the slider generally comprises a slider assembly including a shuttle portion 44 mounted on a track portion 46 , with the shuttle portion being slidable along a length of the track portion . the track portion 46 is mountable on the underside 4 of the desk 2 and the shuttle portion 44 is mounted on the support 12 . illustratively , the track portion 46 may have a channel 48 formed therein and a section of the shuttle portion is complementarily shaped to slide in the channel of the track portion . the channel 48 of the track portion may have a substantially t - shaped lateral cross section and the section of the shuttle portion has a substantially t - shaped lateral cross section . the channel 48 has an elongate slot opening 50 on a lower surface of the track portion . the track portion may include a top wall 52 , a pair of spaced and substantially parallel side walls 54 , 55 extending downwardly from the top wall , and a pair of lip walls 56 , 57 that each extend inwardly from the side walls toward the other of the lip walls . illustratively , the shuttle portion 44 may include a transverse wall 60 and a linking wall 62 extending between the transverse wall and the support 12 . the linking wall 62 may be mounted on the support 12 . the slider means may comprise a single slider assembly 64 located a central lateral location on the support . the slider means may also comprise a pair of laterally spaced slider assemblies 64 , 66 , with each slider assembly being located on a lateral side of a central location on the support , such as , for example , in the case of a support supporting a keyboard or other laterally elongated desk accessory . with respect to the above description then , it is to be realized that the optimum dimensional relationships for the parts of the invention , to include variations in size , materials , shape , form , function and manner of operation , assembly and use , are deemed readily apparent and obvious to one skilled in the art , and all equivalent relationships to those illustrated in the drawings and described in the specification are intended to be encompassed by the present invention . therefore , the foregoing is considered as illustrative only of the principles of the invention . further , since numerous modifications and changes will readily occur to those skilled in the art , it is not desired to limit the invention to the exact construction and operation shown and described , and accordingly , all suitable modifications and equivalents may be resorted to , falling within the scope of the invention .
a sliding desk accessory support for mounting on an underside of the desk to provide a conveniently positionable retractable support for frequently used items . the sliding desk accessory support includes a support for supporting an accessory . the support has a support surface for resting the accessory thereon . a slider is provided for mounting the support on the underside of a desk in a manner permitting substantially linear movement of the support with respect to the desk . the slider is positioned between the support surface of the support and the underside of the desk when the slider is mounted on the desk for minimizing the lateral extent of the invention when installed .