the following description is presented to enable any person skilled in the art to make and use the invention , and is provided in the context of a particular application and its requirements . various modifications to the disclosed embodiments will be readily apparent to those skilled in the art , and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present invention . thus , the present invention is not intended to be limited to the embodiments shown , but is to be accorded the widest scope consistent with the principles and features disclosed herein . fig1 is a front view of a preferred embodiment of the present invention , showing generally , the edging system 100 in the form that it is provided to the retailer and end user . in this view , a substantially flat and rectangular edging portion 102 is provided , having a leading extension 104 and a diagonally opposite trailing extension 106 . a first substantially trapezoidal stake 108 is removably attached to edging portion 102 , immediately above leading extension 104 . a second substantially trapezoidal stake 110 is removably attached to edging portion 102 immediately above , and in opposite orientation , to first stake 108 . in a preferred embodiment , second stake 110 is also removably attached to first stake 108 . in this location and orientation , first stake 108 and second stake 110 form a rectangular portion having a height equal to approximately one - half the height of edging portion 102 . this can be seen clearly in fig2 in which first stake 108 and second stake 110 have been detached and removed from edging portion 102 , leaving leading extension 104 extending from edging portion 102 . referring back to fig1 for description of another preferred embodiment , a third substantially trapezoidal stake 112 is removably attached to edging portion 102 , immediately below trailing extension 106 . a fourth substantially trapezoidal stake 114 is removably attached to edging portion 102 immediately below , and in opposite orientation , to third stake 112 . in a preferred embodiment , fourth stake 114 is also removably attached to third stake 112 . in this location and orientation , third stake 112 and fourth stake 114 form a rectangular portion having a height equal to approximately one - half the height of edging portion 102 . in a more preferred embodiment , the formation of a rectangular segment by combination of adjacent and opposite orientation of first stake 108 and second stake 110 is achieved by using stakes 108 , 110 , 112 , and 114 in the general form of trapezoids comprising two substantially right angles . this can best be seen by reference to fig6 . fig3 is a front view close - up of a preferred embodiment of the present invention showing one end of the edging system 100 having stakes 108 and 110 removably attached . similarly , fig4 is a front view close - up showing the opposite end of edging system 100 having stakes 112 and 114 removably attached . in a preferred embodiment shown in fig3 and fig4 at least one breakable primary tab 116 removably attaches edging portion 102 to each of stakes 108 , and 110 , 112 , and 114 . in a more preferred embodiment , at least one breakable secondary tab 118 removably attaches each of first stake 108 to second stake 110 , and third stake 112 to fourth stake 114 . in a still more preferred embodiment , primary tabs 116 , and secondary tabs 118 are in the approximate range of about 0 . 13 inches and 0 . 25 inches wide . in a still more preferred embodiment , primary tabs 116 and secondary tabs 118 are approximately 0 . 19 inches wide . fig5 is a front view close - up of a preferred embodiment of the present invention shown in fig3 showing leading extension 104 of the edging system 100 with stakes 108 and 110 removed . referring to this view , a preferred embodiment includes stake pockets 120 attached to edging portion 102 for receiving any of stakes 108 , 110 , 112 , or 114 . fig6 is a front view of a stake 108 . while this view is of a preferred embodiment of stake 108 , in a more preferred embodiment , stakes 108 , 110 , 112 , and 114 are geometrically and dimensionally substantially equivalent , so that fig6 and the geometrical and dimensional descriptions in this and all paragraphs apply to , and are representative of , all stakes 108 , 110 , 112 , and 114 . in a preferred embodiment , stake 108 has a stake top 124 and an opposite stake bottom 126 . in the most preferred embodiment , stake 108 has a first side 128 which forms a substantially right angle with stake top 124 . first side 128 also forms a substantially right angle with stake bottom 126 . in the same most preferred embodiment , stake 108 has a second side 130 that forms an acute angle with stake top 124 . second side 130 also forms an obtuse angle with stake bottom 126 . thus , in the most preferred embodiment , stake 108 substantially forms a trapezoid having two right angles . in this embodiment , stake bottom 126 is formed to break the sharp point of the vertex formed between first side 128 and second side 130 . in an alternative embodiment , there is no stake bottom 126 and stake 108 is substantially a right triangle with first side 128 and second side 130 forming the vertex . in another preferred embodiment stakes 108 , 110 , 112 , and 114 , are approximately 8 inches in length , so as to be interchangeable with the many components of edging systems currently on the market and readily available . in the most preferred embodiment , a stiffening rib 122 extends longitudinally along each of stakes 108 , 110 , 112 , and 114 , as can be seen in fig6 . in a more preferred embodiment , the height of each longitudinal stiffening rib 122 is at least equal to approximately the thickness of stakes 108 , 110 , 112 , or 114 . in a still more preferred embodiment , the height of longitudinal stiffening rib 122 is approximately 150 % of the thickness of the material of stakes 108 , 110 , 112 , or 114 . in another preferred embodiment , a non - ribbed stake tip 132 is present on stake 108 , between stake bottom 126 and stiffening rib 122 , to facilitate entry into stake pocket 120 . in a still more preferred embodiment , the sum of the material thickness of stake 108 ( or of any stake 110 , 112 , or 114 ) plus the height of stiffening rib 122 , is equal to or greater than the width of the opening of stake pocket 120 . fig7 is a top view of stake 108 inserted into stake pocket 120 . in this view of a preferred embodiment , it can be seen that the thickness of stake 108 , including the height of stiffening rib 122 , can be slightly wider than the opening in stake pocket 120 , so as to form a secure interference fit of stake 108 within pocket 120 . fig8 is a front view close - up of a preferred embodiment of the present invention showing the complimentary match of leading extension 104 of a first section of edging system 100 and a trailing extension 206 of a second section of edging portion 202 aligned in series connection to form a continuous landscaping barrier . stake 108 and stake 110 are inserted into stake pockets 120 and stake pockets 220 to hold adjacent sections of edging system 100 in continuous alignment and attached to the soil . in a still more preferred embodiment , edging portion 102 is made by press cutting / forming stakes 108 , 110 , 112 , and 114 , stake pockets 120 , primary tabs 116 and secondary tabs 118 from continuously fed metal strip . in this embodiment , primary tabs 116 and secondary tabs 118 are formed by providing a relief of the desired dimension between the punch tooling and dye tooling of the press . in a still more preferred embodiment , edging system 100 is made from metal stock of between approximately 12 gage and 16 gage thickness . in the most preferred embodiment , edging system 100 is made from metal stock of approximately 14 gage thickness . in a preferred embodiment of the present invention , an edging system 100 is disclosed , being substantially flat and rectangular , and made of a durable and flexible material . in a preferred embodiment , edging system 100 is made of a bendable material such as metal , which is painted or galvanized . edging system 100 is comprised of an edging portion 102 having at one end a generally rectangular leading extension 104 and located diagonally opposite at the other end , a matching trailing extension 106 . adjacent and removably attached to leading extension 104 , are two generally trapezoidal stakes 108 and 110 , in opposite orientation . stakes 108 and 110 are of substantially right - trapezoidal geometry so as to form together a rectangular section of substantially similar dimensions to that of leading extension 104 . similarly , adjacent and removably attached to trailing extension 106 , are two generally trapezoidal stakes 112 and 114 in opposite orientation . stakes 112 and 114 are of substantially right trapezoidal geometry so as to form together a rectangular section of substantially similar dimensions to that of trailing extension 106 . thus constructed , stakes 108 , 110 , 112 , and 114 , and edging portion 102 form a unitary and substantially fully rectangular edging system 100 . the single piece construction and rectangularity of edging system 100 permits improved efficiencies in manufacturing , painting , coating , handling , packaging , shipping , displaying , inventory , and delivering in retail transactions . in a preferred embodiment , stakes 108 , 110 , 112 , and 114 are attached to edging portion 102 by primary tabs 116 . in a more preferred embodiment , stakes 108 and 110 , and stakes 112 and 114 are attached to each other by a secondary tab 118 . primary tabs 116 and secondary tabs 118 are bendable and easily broken when a bending and / or torsional force is applied . this can be most easily accomplished by clamping onto any individual stake with a pair of pliers and bending and / or twisting the stake until primary tabs 116 and secondary tabs 118 are broken , releasing the stake from edging portion 102 . the landscaper will typically first remove either stake 110 or stake 114 , since they are the outermost stakes attached to edging portion 102 . in removing outermost stakes 110 and 114 , the landscaper will break primary tabs 116 and secondary tabs 118 . when the landscaper removes stakes 110 and 114 , he will have exposed stakes 108 and 112 for easy gripping with pliers . the landscaper removes stakes 108 and 110 from edging portion 102 by breaking the remaining primary tabs 116 . when the landscaper removes innermost stake 108 , he will have exposed leading extension 104 on one end of edging portion 102 . when the landscaper similarly removes innermost stake 112 from the diagonally opposite end of edging portion 102 , he will have exposed trailing extension 106 . the landscaper then places edging portion 102 in the desired position in the soil . any of stakes 108 , 110 , 112 , and 114 can then be inserted into any of stake pockets 120 , which are attached to edging portion 102 . the landscaper then hammers stake top 124 of selected stake ( 108 , 110 , 112 , or 114 ) into the soil to secure edging portion 102 into place . in a preferred embodiment , each of stakes 108 , 110 , 112 , and 114 has a longitudinal stiffening rib 122 . longitudinal stiffening ribs 122 allow the manufacturer to manufacture stakes 108 , 110 , 112 , and 114 out of the same stock that the edging portion 102 is made from . this results in the increased resistance to buckling that stiffening ribs 122 add to stakes 108 , 110 , 112 , and 114 , as is necessary to withstand the hammering applied by the landscaper to drive the stakes into the soil . the central location and narrow structure of stiffening ribs 122 on stake ( 108 , 110 , 112 , and 114 ) allow stake ( 108 , 110 , 112 , and 114 ) to have an overall height that is equal to or greater than the width of the opening of pocket 120 . the low profile of stake tip 132 facilitates easy insertion of stake ( 108 , 110 , 112 , or 114 ) into the opening of pocket 120 . fig8 shows the complimentary match of leading extension 104 and trailing extension 106 when multiple sections of edging system 100 are aligned in series connection to form a continuous landscape barrier of variable length . thus the landscaper can connect multiple sections of edging system 100 in series , end - to - end . in this configuration , leading extension 104 of a first edging portion 102 will complementarily match a trailing extension 206 of a second edging portion 202 . stake pockets 120 are located on leading extension 104 for alignment with stake pockets 220 on trailing extension 206 so that any of stakes 108 , 110 , 112 , or 114 may be used to interlock leading extension 104 of edging portion 102 with trailing extension 206 of second edging portion 202 to form a continuous length of interlocking sections of a landscape barrier . while this invention has been described in connection with a preferred embodiment , it is not intended to limit the scope of the invention to the particular form set forth , but on the contrary , it is intended to cover such alternatives , modifications , and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims . by way of example , the references to leading and trailing extensions are interchangeable , since the edging system is equally functional regardless of which direction it faces , and these terms are included only to aid in the description of the continuous connectivity of edging portions to form a landscape barrier of any desired length . for all purposes of this patent , leading extensions and trailing extensions may be alternatively referred to as “ extensions ” or “ end extensions .” for all purposes of this patent , stakes are considered substantially the same and interchangeable . also , although stakes are described in a preferred embodiment as trapezoidal , the smallest side of the trapezoid may be eliminated in an alternative embodiment to form a triangular stake , and still remain entirely within the spirit and description of the present invention .
a landscape - edging device is disclosed which may be used to segregate dissimilar landscaping schemes by positioning the device into the soil . the landscape edging is made of flexible strips , designed for continuous end - to - end attachment . the edging is attached to the soil by stakes . the edging system is designed so that stakes are removably attached to the edging portion of the device . by this attachment , the stakes can be conveniently and cost effectively manufactured and shipped together with the edging portion . stiffening ribs on the stakes increase the strength of the stakes so that they may be made from the same material and thickness as the edging portion .