referring now to the drawings wherein like numerals have been used throughout the several views to designate the same or similar parts , in fig1 a roll - out storage assembly 10 in accordance with the present invention is illustrated . as shown in fig3 the roll - out storage assembly 10 is comprised of a plurality of storage shelving units , with the storage shelving units being numbered as 12 , 14 , 16 and 18 . specifically in fig1 there is shown a roll - out storage assembly wherein three storage shelving units 12 , 14 and 16 are illustrated , with shelving units 12 and 14 in the stored position and shelving unit 16 in the extended exposed position . as shown , a user may readily have access to the shelves 24 of the shelving unit 16 . as shown in fig2 the storage shelving unit 12 , 14 , 16 or 18 is comprised of a plurality of corner frame members 20 and intermediate frame members 22 extending upwardly from a base shelf member 23 . preferably , the corner and intermediate frame members 20 and 22 contain a plurality of openings 25 therein which permit the user to adjust the distance or gap between each of the mounted shelves 24 and the lower base shelf member 23 , as desired . located and secured to the upper ends of each of the corner frame members 20 and the intermediate frame members 22 are u - shaped extension members 26 . the u - shaped extension members 26 are structurally arranged to be adjustably mounted to the upper ends of the corner frame members 20 and the intermediate frame members 22 to precisely suspend the storage unit upright with the minimal weight upon the casters 31 . the u - shaped member 26 includes an opening 27 therein , as shown in fig4 - 6 , which is structurally arranged to receive a roller shaft member 28 onto which is mounted a rotatable roller member 29 . as shown in fig2 the roll - out storage lower surface 11 of the storage unit 12 includes a plurality of rubber casters 31 mounted thereon which supplement and provide additional support for the loaded roll - out storage unit , as desired . however , it is preferred in the present invention that the bulk of the weight of the goods stored on the roll - out storage units are supported by the engagement of the roller members 29 on the roller track 30 , as shown in fig3 - 4 and 7 - 8 , as will hereinafter be described . as shown in fig1 the roll - out storage assembly 10 includes storage shelf units 12 , 14 and 16 . the storage shelf unit 16 is positioned outwardly from the stored position of shelf units 14 and 16 . the shelf unit 16 is in the extended position to permit access to the shelving unit 16 . the roller tracks 30 are preferably mounted to the ceiling or suspended from the ceiling in such a manner to be structurally engaged by adjacent storage shelving units , as shown in fig3 and enlarged fig4 . the roller track 30 ( fig2 and 4 ) is substantially a y - shaped member with each of the diverging lower portions 34 structurally arranged to provide an u - shaped channel 35 which receive and engage roller members 29 located on adjacent sides of adjacent storage shelving units , as shown in fig3 . however , the roller track structurally arranged to receive the roller members 29 on the outside of the aligned units , is a single u - shaped channel . in fig7 the roll - out storage unit 16 is positioned in the stored position , as represented in fig3 . if access is desired to the storage shelving unit 16 , the storage shelving unit 16 is moved to the outward , extended position , as shown in fig8 . this permits the user of the storage assembly to have access to all shelves of the storage assembly , without the need of utilizing an aisle or passageway between adjacent storage shelving units . accordingly , the present invention provides for maximum storage of articles within a predetermined sized area by eliminating the necessity of requiring space for an aisle or passageway to provide access between adjacent positioned storage shelving units . it is within the scope of the present invention that the actual size and number of shelves per unit may vary depending upon particular space requirements and the type of goods to be stored . for purposes of illustrating the attainment of maximum storage within a given area , if it is assumed that the present invention envisions a four - unit storage shelving system positioned in a storage space area 9 feet wide , 7 feet long , or deep , and 7 feet high having a total storage area of 441 cubic feet . the present invention provides a total storage are of approximately 378 cubic feet . this is calculated by providing a distance of 2 . 5 inches between each of the aligned storage shelving units and between the end units and the walls of the area . thus , the non - used space is approximately 63 cubic feet of the storage system . if the width of each shelf is 7 feet with a depth of 2 feet , each module or storage unit provides 56 square feet of shelf space while providing a total area of 94 . 5 cubic feet . this is calculated by having a depth of 7 feet , a width of 2 feet and a height of 7 feet , less the approximately 3 inches at the bottom of the unit where the casters are not mounted . when compared to a system that requires an aisle - way or passageway to permit access to the stored storage units , the present invention provides maximum storage within a particular storage area by limiting the need for aisles or passageways to the units while permitting the placement or removal of storage objects from each of the shelving units . as shown in the present invention , each of the roller tracks 30 would be 14 feet long to permit selective roll - out of each storage shelving unit moved from the stored position to the outward position to permit access by the user . also , as shown in fig7 it is possible that one side of the storage shelving unit 16 may include cross brace members 32 which reinforce and provide structural integrity to the storage unit . in a further embodiment of the present invention , in fig7 and 8 a reversible electric motor 36 is provided and is positioned between the parallel mounted roller tracks 30 . the motor 36 is operatively connected through a rail system 38 , drive chain 40 and slide member 39 to the shelving unit 12 . the slide member 39 is coupled to the drive chain 40 driven by gear member 42 of the reversible electric motor 36 . the slide member is engaged with the storage shelving unit 16 and when the motor is engaged , the drive chain 40 is moved and the associated slide member 39 and the storage unit 16 are also moved from the inward stored position ( fig7 ) to the outward position ( fig8 ). this outward movement positions the shelving unit 16 in a position where the storage shelves are exposed to permit access to them , as shown in fig1 and 8 . this movable feature is particularly advantageous for elderly users or for those having limited physical strength in selectively moving one or more of the storage units outwardly to permit access to the shelves of the storage unit . when the user has completed loading or unloading of materials or items from the unit 16 , the reversible electric motor is engaged and the drive chain is reversed and the storage unit is moved from the outward position ( fig8 ) to the inward stored position , as shown in fig7 .