with reference to the drawings , in particular to fig1 - 4 thereof , the present invention , denoted by reference number 10 , known as a portable expandable barbecue grill will be described . as seen in the figures , the present invention is a grill apparatus 10 designed and configured to adjust in length so as to provide for an increase or decrease in cooking surface . in addition , the present invention can be altered in height so as to accommodate any size person , or alternatively , to provide for a device that can easily be towed via vehicle or stored at any location . to provide for such a configuration , the present invention comprises a present invention comprises a support frame 12 that maintains a housing 14 . the support frame and housing each include an inner member 16 a , 18 a , respectively , and an outer member 16 b , 18 b respectively . the inner member 16 a of the frame being slideably mounted within the outer member 16 b of the frame . the inner member of the housing 18 a being slideably mounted within the outer member of the housing 18 b . as such , the outer member 16 b of the support frame 12 includes a horizontal support arm 20 . this support arm 20 includes an outer end and an inner end . secured to the outer ends is a pair of vertical legs 22 a . slideably mounted to the inner end of the support arm 20 is the inner frame member 16 a . to receive the inner frame member 16 a , the support arm 20 includes a groove 24 that forms a sleeve . the outer support arm 20 includes an opening , which forms a sleeve for receiving and maintaining a support arm of the inner frame . this outer support arm 20 is secured exteriorly to the outer housing 18 b . an inner support arm 26 includes an outer end and an inner end . the inner end is received within the groove 24 and as such provides for the inner support arm 26 to be slideably mounted within the groove 24 . located at the outer end of the inner support arm 26 is an attaching member 28 . this member receives the outer end of the inner housing 18 a so as to provide for the outer end of the inner housing to be secured to the inner support arm 26 via the attaching member 28 . also secured to this attaching member 28 is a second set of vertical legs 22 b . though not illustrated , a handle can be attached to this attaching member for enabling the user to grab the handle and pull or push the inner support arm 26 out or in the groove of the outer support arm 20 . accordingly , as the user pulls out the attaching member , the inner support bar slides out of the groove . since the attaching member is attached to the inner housing , the inner housing is inherently slid out or m as well . thus rendering an extended or non - extended grill . a locking device , as illustrated but not labeled , can be located on the frame . this locking device is conventional and will ensure that the inner frame member will be secured to the outer frame member when in a desired position . as seen in the various drawings , fig1 - 4 , the inner member 18 a and outer member 18 b of the housing 14 each include a lower section 30 and 32 , respectively and an upper section 34 and 36 , respectively . the lower section 30 and 32 maintains the heating element , such as lava rocks for gas grills or coals for charcoal grills . the lower section will be designed so as to accommodate the preferred heating system . the lower section 30 of the inner member 18 a , and / or the lower section 32 of the outer member 18 b include an access means 38 for allowing access to the interior for permitting maintenance to occur as necessary . hindgedly secured to lower section 30 and 32 is the upper section 34 and 36 . this upper section 34 and 36 act as the lid and as such each includes a handle 40 for lifting the lid and apertures 42 for ventilation . this aperture can include a pivotally or hingedly located cover for enabling the user to decide the need and the amount for ventilation . it is noted that the handle located on the inner housing is sized such that the housing can slid freely within the outer housing and be non - obtrusive . a thermostat 44 or the like can also be located on each lid for displaying the temperature within the housing . a shelf 46 or the like can be exteriorly attached to the housing 14 of the inner housing , outer housing or a combination thereof . to enable the slideable connection of the housing 14 , the inner member 18 a is substantially the same shape , but smaller in size to allow for inner member 18 a to slide freely into the outer member 18 b . a locking device 48 can be attached to provide for the inner member to be in a locked and secured position once the desired length is met . this locking member 48 can be any conventional locking device . this locking device can be located on the lid , on any surface of the housing or a combination thereof this will provide for a locking device that can be located at any location that will enable adequate locking capabilities . removably secured the lower section 30 and 32 , respectively , of the inner and outer housings 18 a and 18 b , respectively is a grate 50 . the grate comprises an inner grate member 52 a and an outer grate member 52 b , wherein the inner grate is slideably secured to the outer grate member . as seen in the drawings the outer grate 52 b is secured to the lower section of the outer housing via conventional means such as by hooks , groove or the like . this grate 52 b includes a plurality of parallel disposed hollow sleeves 54 . perpendicular crossbars 56 can be secured to the hollow sleeves for additional support . slideably located within each sleeve 54 is a rod 58 . each rod includes an inner end and an outer end . the inner is received within the sleeve . the outer end is secured to a perpendicularly disposed cross bar 60 . this cross bar 60 is removably secured to the inner housing via conventional means , such as by hooks or the like . optionally , the front most and back most rod can be secured to the side of the housing . this will ensure the securement of the grate . accordingly , as the inner frame is pulled outward , the housing is inherently adjusted horizontally , causing the rods to be removed from the hollow sleeves . once at the desired length is located , the housing and / or frame are locked into position , and the sleeves and rods form the cooking surface . thus providing for the sleeves and rods to form the grate . a handle can be secured to the inner and outer portions of the grate . this handle is illustrated but not labeled . as seen in the drawings , the handle is secured to the outer grate and is slideable mounted to the inner grate . to provide for a slideably connection , conventional means is utilized . in this embodiment , as shown , the handle on the inner grate includes an aperture . this aperture receives a rod of the inner grate . the rod slides within this aperture and thus enables the handle to accommodate any length grate . two handles can be located thereon to provide for a handle to be located near the front of the grill and a second handle to be located in the rear of the grill . this arrangement will ensure adequate removal of the grate . for enhancing the present invention , the legs can include lockable wheels , illustrated , but not labeled . the wheels can be enlarged to provide for the grilled to be transported across a variety of terrain , easily and effortlessly . in addition the legs can be adjusted and / or removably from the support bars . this provides for a grill that can be utilized by any cook , regardless of their size or stored for easy transportation . the legs can be adjusted via any conventional means , but preferably , and as illustrated , the legs can be adjusted via the system as shown in the figures . as seen , the support 20 and attaching member 28 include a receiving member 62 for each leg . the receiving member will lock the upper end of the leg via the use of a butter fly nut 64 . the upper portion of each leg 66 is secured to the receiving member 62 . this upper portion 66 is designed and configured to slideably receive the lower portion of the leg 68 . in order to achieve the desired height , the lower portion of the leg 68 is slid within the upper portion 66 . once the desired height is achieved , the lower portion is locked into place via a butterfly pin or the like , as shown . while the invention has been particularly shown and described with reference to an embodiment thereof , it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the spirit and scope of the invention .
the present invention is a multifunctional portable barbecue grill that is designed and configured to expand in order to increase and / or decrease the total size the cooking surface of the particular grill . the grill includes a mainframe that supports the housing . located in the housing is a grate . the mainframe , housing and grate include a slideably extension system for increasing or decreasing the length of the grill . in addition , for convenience and added comfort , the mainframe of the grill can be altered in height to provide for a comfortable height for the cook as well as provide for an easy means for storage and transportability .