referring now to the drawings wherein the showings are for purposes of illustrating a preferred embodiment of the present invention only , and not for purposes of limiting the same , fig1 illustrates a skate apparatus 10 constructed in accordance with the preferred embodiment of the present invention . as seen in fig4 two ( 2 ) separate units of the skate apparatus 10 will typically be needed by the skater , with each skate apparatus 10 being engaged to a respective one of the ski boots 12 , 14 of the ski boot pair . in the preferred embodiment , the skate apparatus 10 used in conjunction with the left ski boot 12 and the skate apparatus 10 used in conjunction with the right ski boot 14 are identically configured . as such , though the skate apparatus 10 will hereinafter be described as being used in conjunction with the left ski boot 12 , it will be recognized that the skate apparatus 10 may be used with either of the ski boots 12 , 14 of the ski boot pair . in the preferred embodiment , skate apparatus 10 generally comprises an elongate frame member 16 having a front end 18 and a back end 20 . the frame member 16 preferably has a generally u - shaped configuration defining a top wall 22 and first and second opposing side walls 24 , 26 extending perpendicularly downward from the top wall 22 . extending longitudinally along the top surface 28 of top wall 22 between the front end 18 and back end 20 of the frame member 16 is an axis a . in the preferred embodiment , frame member 16 is fabricated from aluminum , though other materials may be utilized as an alternative . additionally , the top wall 22 , first side wall 24 and second side wall 26 are preferably provided with a plurality of openings 30 which are used to decrease the weight of the frame member 16 . rotatably connected to the frame member 16 are a plurality of wheels 32 which are connected between the first and second side walls 24 , 26 of the frame member 16 in horizontal , linear alignment . the frame member 16 preferably includes three ( 3 ) wheels 32 rotatably connected thereto , though it will be recognized that different numbers of wheels 32 may be utilized . referring now to fig3 each of the wheels 32 are preferably attached to the frame member 16 via an axle member 34 which extends through the hub 36 of the wheel 32 . in attaching a wheel 32 to the frame member 16 , the axle member 34 is initially inserted through an aperture disposed in the lower portion of the first side wall 24 , extended through the hub 36 , and subsequently inserted through a corresponding aperture disposed in the lower portion of the second side wall 26 which is in coaxial alignment with the aperture disposed in the first side wall 24 . when fully inserted into the coaxially aligned apertures and through the hub 36 , the head portion 38 of the axle member 34 is abutted against the outer surface of the first side wall 24 . to maintain the axle member 34 in engagement with the frame member 16 , threadably engaged to the threaded distal end of the axle member 34 which protrudes outwardly from the second side wall 26 is a lock nut 40 . to aid in the rotation of the wheel 32 , and more particularly the hub 36 , disposed about the axle member 34 between the hub 36 and first side wall 24 is a first tubular bearing 42 , while disposed about the axle member 34 between the hub 36 and second side wall 26 is a second tubular bearing 44 . disposed about the outer surface of the hub 36 is a wheel cover 46 which includes an open space 48 formed therein to provide the wheel cover 46 and hence the wheel 32 with shock absorbing capability . in the preferred embodiment , each wheel cover 46 is formed from rubber having a diameter and width substantially exceeding the diameter and width of the wheels of currently manufactured blade skates . particularly , the outer diameter of each wheel cover 46 ranges from 3 - 5 inches and is preferably 4 inches , while the width of each wheel cover 46 ranges from 1 - 3 inches and is preferably 2 inches . additionally , disposed about the outer surface of each of the wheel covers 46 are a plurality of annular treads 49 . as best seen in fig1 and 2 , in the preferred embodiment the three ( 3 ) wheels 32 attached to the frame member 16 are equidistantly spaced along the longitudinal axis a . a first wheel 32 is preferably attached to the frame member 16 adjacent to and protruding outwardly from the front end 18 thereof , with a second wheel 32 being attached to the frame member 16 adjacent to and protruding outwardly from the back end 20 . the third wheel 32 is preferably attached to the frame member 16 in approximately the center thereof . advantageously , by constructing the wheels 32 from the aforementioned components , and orienting the wheels 32 on the frame member 16 in the aforementioned manner , the skate apparatus 10 is adapted to be usable on a variety of terrains including grass , dirt , concrete , and asphalt . in this respect , the orientation of the wheels 32 and the length and width of the wheel covers 46 allows the skate apparatus 10 to pass over these terrains as well as obstructions such as roots and sticks which may be encountered on dirt or grass surfaces and mud or gravel which may be encountered on concrete or asphalt surfaces . additionally , the inclusion of the treads 49 within the wheel covers 46 provides the traction needed to allow the skate apparatus 10 to pass over rough terrains . referring now to fig1 and 2 , rigidly connected to the front end 18 of the frame member 16 is a toe connector 50 . toe connector 50 generally comprises a base portion 52 which is rigidly connected to top surface 28 of the top wall 22 adjacent the front end 18 via a pair of fasteners 54 such as screws or rivets . extending horizontally inward from the base portion 52 along the axis a is a toe engaging portion 56 which defines an arcuate inner surface 58 . as seen in fig2 when the ski boot 12 is interfaced to the skate apparatus 10 , the toe portion of the ski boot 12 is slid underneath the toe engaging portion 56 of the toe connector 50 , with such insertion being limited by the abutment of a front arcuate toe portion of the ski boot 12 against the arcuate inner surface 58 . when the ski boot 12 is slid into this position , it is prevented from lifting off of the frame member 16 by the abutment of the bottom surface of the toe engaging portion 56 against a top planar surface defined by the toe portion of the ski boot 12 . pivotally connected to the back end 20 of the frame member 16 is a heel connector 60 . heel connector 60 generally comprises a first rod member 62 pivotally connected to the first side wall 24 adjacent the back end 20 of the frame member 16 , and a second rod member 64 pivotally connected to the second side wall 26 adjacent the back end 20 of the frame member 16 . slidably attached to and extending between the first rod member 62 and second rod member 64 is a cross piece 66 . the cross piece 66 includes a base portion 68 defining an angled surface 69 and having a pair of apertures extending angularly therethrough into which are inserted the first and second rod members 62 , 64 . the cross piece 66 further includes a heel engaging portion 70 extending horizontally inward from the base portion 68 along the axis a . similar to the toe engaging portion 56 of the toe connector 50 , the heel engaging portion 70 of the cross piece 66 defines an arcuate surface 72 along the inner edge thereof . prior to the receipt of the first and second rod members 62 , 64 into the apertures disposed within the base portion 68 of the cross piece 66 , each of the rod members 62 , 64 are pivotally connected to a respective side wall of the frame member 16 . as seen in fig1 and 2 , disposed in the first side wall 24 adjacent the back end 20 of the frame member 16 is a first set of horizontally oriented , linear aligned apertures 74 . similarly , disposed in the second side wall 26 adjacent the back end 20 of the frame member 16 is a second set of horizontally oriented , linearly aligned apertures 76 , each of which are coaxially aligned with a corresponding aperture 74 of the first set . each of the apertures 74 of the first set is sized and configured to pivotally receive the proximal end of the first rod member 62 , while each of the apertures 76 of the second set is sized and configured to pivotally receive the proximal end of the second rod member 64 . as best seen in fig3 the proximal ends of the first and second rod members 62 , 64 have bent configurations so as to be pivotally engageable to and maintainable within a corresponding pair of the apertures 74 , 76 . the use of the first and second sets of apertures 74 , 76 will be explained below . after the rod members 62 , 64 have been pivotally received into a corresponding pair of the apertures 74 , 76 , the distal ends of the first and second rod members 62 , 64 are inserted through the pair of angled apertures disposed within the base portion 68 of the cross piece 66 . as will be recognized , when the rod members 62 , 64 are inserted into the apertures , the cross piece 66 is oriented such that the heel engaging portion 70 faces inwardly toward the toe connector 50 . the cross piece 66 is oriented in this manner so that the heel engaging portion 70 thereof may be abutted against a top planar surface of the heel portion of the ski boot 12 . the engagement of the heel engaging portion 70 to the heel portion of the ski boot 12 is limited by the abutment of the arcuate surface 72 against the arcuate heel portion of the ski boot 12 . in the preferred embodiment , the cross piece 66 is cooperatively engaged to the heel portion of the ski boot 12 by sliding the same downwardly along the first and second rod members 62 , 64 until the heel engaging portion 70 abuts the top planar surface of the heel portion . to accommodate the particular size of the ski boot 12 , small adjustments may be made to the position of the cross piece 66 by pivoting the rod members 62 , 64 toward or away from the ski boot 12 and either lowering or raising the cross piece 66 along the rod members 62 , 64 so as to properly abut the heel engaging portion 70 against the heel portion of the ski boot 12 and the arcuate surface 72 against the arcuate heel portion . in those instances when the pivotal motion of the rod members 62 , 64 and movement of the cross piece 66 are not sufficient to accommodate the size of the ski boot 12 , the cross piece 66 may be removed from the rod members 62 , 64 with the rod members 62 , 64 being removed from the pair of apertures 74 , 76 into which they are received , and subsequently pivotally received into a different pair of corresponding apertures 74 , 76 . as such , the first set of apertures 74 and second set of apertures 76 allows for large adjustments to the longitudinal positioning of the cross piece 66 along the axis a , while the pivotal motion of the first and second rod members 62 , 64 within a corresponding pair of apertures 74 , 76 allows for minor adjustments to the positioning of the cross piece 66 along the axis a . after the first and second rod members 62 , 64 are placed in a desired pair of corresponding apertures 74 , 76 , the rod members 62 , 64 are reinserted into the cross piece 66 in the previously described manner . once the cross piece 66 , and more particularly the heel engaging portion 70 thereof , has been properly abutted against the heel portion of the ski boot 12 , the cross piece 66 is maintained in such engagement via a first handle member 78 threadably engaged to the threaded distal end of the first rod member 62 , and a second handle member 80 threadably engaged to the threaded distal end of the second rod member 64 . in this respect , by turning the first and second handle members 78 , 80 in a clockwise direction , the handle members 78 , 80 are caused to move downwardly along the threaded portions of the first and second rod members 62 , 64 and come into abutting contact with the angled surface 69 , thus locking the cross piece 66 against the heel portion of the ski boot 12 in the manner shown in fig2 . in retrofitting the skate apparatus 10 to the ski boot 12 , initially the sole of the ski boot 12 is abutted against the top surface 28 of the top wall 22 . thereafter , the toe portion of the ski boot 12 is slid along the axis a toward the front end 18 of the ski boot 12 so as to be inserted into the toe connector 50 rigidly secured to the frame member 16 in the manner previously described . in this respect , the toe portion is fully inserted into the toe connector 50 when the arcuate inner surface 58 of the toe engaging portion 56 is abutted against the arcuate toe portion of the ski boot 12 . the heel engaging portion 70 of the cross piece 66 is then brought into abutting contact with the heel portion of the ski boot 12 by pivoting the first and second rod members 62 , 64 within the corresponding pair of apertures 74 , 76 and selectively positioning the cross piece 66 along the length of the rod members 62 , 64 . as will be recognized , prior to the engagement of the cross piece 66 to the heel portion , the first and second rod members 62 , 64 are disposed in a corresponding pair of apertures 74 , 76 which will accommodate the particular size of the ski boot 12 . the heel engaging portion 70 of the cross piece 66 is abutted against the heel portion of the ski boot 12 , with the arcuate surface 72 being abutted against the arcuate heel portion thereof . thereafter , the first and second handle members 78 , 80 are brought into engagement with the angled surface 69 of the base portion 68 thus locking the cross piece 66 against the heel portion . additional modifications and improvements of the present invention may also be apparent to those skilled in the art . thus , the particular combination of parts described and illustrated here and is intended to represent only one embodiment of the invention , and is not intended to serve as limitations of alternative devices within the spirit and scope of the invention .