CONVERTIBLE CARRYING CASE AND SECUREMENT SYSTEM FOR A POST

Abstract

A convertible carrying case and securement system for a post comprising a case comprising of at least five contiguous panels that form a substantially hexahedral volume, a retractable pull handle on one end of said case, at least one pair of wheels on the distal end of said case at the opposite end of said retractable pull handle, said case having a plurality of straps and/or handles attached to at least one of the outside panel surfaces, wherein said five panels include the case floor, two case side panels, a wheel-side panel closest to said pair of wheels, and a panel parallel to said wheel-side panel but connecting the opposite edges of said side panels, a post comprising at least a base post or stump, wherein one end of the said base post or stump is within said case during the post’s deployment.

Claims

1. A convertible carrying case and securement system for a post comprising: a case comprising of at least five contiguous panels that form a substantially hexahedral volume, a retractable pull handle on one end of said case, at least one pair of wheels on the distal end of said case at the opposite end of said retractable pull handle, said case having a plurality of straps and/or handles attached to at least one of the outside panel surfaces, wherein said five panels include the case floor, two case side panels, a wheel-side panel closest to said pair of wheels, and a panel parallel to said wheel-side panel but connecting the opposite edges of said side panels; and a post comprising at least a base tube or stump, wherein one end of the said base tube or stump is within said case during the post’s deployment.

2. The convertible carrying case and securement system for a post of claim 1, further comprising: four removable and adjustable support structure (ADJSS) sub-assemblies that each comprises an adjustment knob, a foot sub-assembly, and a threaded shaft connecting said knob and foot; wherein each ADJSS sub-assembly is placed near each corner of said case’s floor or an extension of said case; wherein said extension of said case juts out from the bottom portion of the case panel parallel to and on the opposite distal end of said wheel-side panel; wherein said threaded shaft is disposed through the case floor or an extension to the case with mating threads all to enable adjustment of said case’s corner heights and hence verticalness of said post during deployment.

3. The convertible carrying case and securement system for a post of claim 1: wherein said post further comprises at least one or more coaxially located extension tube segments to form an overall telescoping post assembly; wherein said base tube and extension tube segments have a plurality of holes drilled straight through from one side to the other to allow a pin to be disposed through lined-up holes of the said base tube to another tube segment or said base tube to a coaxially placed attachment collar or cup-like element, or extension tube segment to another extension tube segment, or extension tube segment to a coaxially placed attachment collar or cup-like element.

4. The convertible carrying case and securement system for a post of claim 3: wherein said base tube is integrated with or molded as a T-bar element where the spanwise portion of the T-bar forms an axis of rotation for the entire post assembly; wherein the spanwise distal ends of the T-bar are pinned or alternatively reside in a molded cylindrical housing in the case so that the only kinematic degree of freedom for the spanwise portion of the T-bar is pure rotation.

5. The convertible carrying case and securement system for a post of claim 4, further comprising: a collar-connecting rod-slider mechanism, said mechanism comprising a collar, connecting rod, collar-to-connecting rod pin, slider, connecting rod-to-slider pin, and slider track; wherein said collar wraps closely around said base tube while still allowing said collar to slide relative to the said base tube with both minimum friction and collar-to-base tube gap; said collar has an eyelet pin bore on the wheel-side that said collar-to-connecting rod pin is disposed through; wherein the other end of the said connecting rod is attached to the said slider via connecting rod-to-slider pin disposed through an eyelet pin bore on said slider; said slider track is securely mounted to the spanwise center of said case floor between the near proximal and wheel-side distal end of the said case so said slider sliding on said slider track helps guide the overall post assembly to and from the stored and fully deployed positions; wherein a quick-release lock pin is disposed through lined-up holes on both said slider and said slider track to provide the constraining force that prevents rotation of the overall post assembly during deployment.

6. The convertible carrying case and securement system for a post of claim 4, further comprising a ledge or structure securely fixed to the inside surface of the wheel-side panel above said slider track that serves as the end stop of said post when said post is in its stored position within said case.

7. The convertible carrying case and securement system for a post of claim 5, wherein said collar or cup-like element is connected to a short member on one end while the other end of the short member furthest from the wheel-side distal end of the said case is connected to a basketball backboard and hoop assembly.

8. The convertible carrying case and securement system for a post of claim 5, wherein said collar or cup-like element is connected to a boom or structural member on one end while the other end of the short member closest to the wheel-side distal end of the said case is directly connected to or connected to via intermediate elements at least one attachment structure.

9. The convertible carrying case and securement system for a post of claim 3: wherein said stump is proximally located and attached to or structurally integrated at one end to said case, where a separate single-segment tube or base portion of a multiple segment telescoping tube slides relative to said stump to form overlapping sections of said post; wherein said stump and extension tube segments have a plurality of holes drilled straight through from one side to the other to allow a pin to be disposed through lined-up holes of the said stump to another tube, or another tube segment to a separate tube segment, or a tube segment to a coaxially placed attachment collar or cup-like element.

10. The convertible carrying case and securement system for a post of claim 9, wherein said collar or cup-like element is connected to at least one attachment structure.

11. The convertible carrying case and securement system for a post of claim 1: wherein said case has a plurality of construction levels each attached to one of said case’s inner panel surfaces; and said construction levels comprising dyed liquid in a small clear hexagonally shaped pocket with sufficient gas void fraction to have a visible bubble and level indicators typically in the form of line markings on the outer surface of the hexahedral-shaped level.

12. The convertible carrying case and securement system for a post of claim 11, wherein the construction level is attached near the top edge of one of said case’s side panels by any one of a variety of means and oriented such that when the bubble is in between the level indicators, the pitch angle of said case is at a zero degree or a neutral pitch angle corresponding with a perfectly vertical post as viewed from the side of said case.

13. The convertible carrying case and securement system for a post of claim 11, wherein the construction level is fixed near the top of the inside surface on one of the panels adjoining and orthogonal to the case’s side panels and oriented such that when the level’s bubble is in between the level indicators, the roll angle of said case is at a zero degree or a neutral roll angle corresponding with a perfectly vertical post as viewed from said wheel-side panel.

14. The convertible carrying case and securement system for a post of claim 2: wherein each said foot assembly comprises a substantially hemispherical element with a center-top borehole to accommodate a substantially threaded adjuster shaft; wherein each substantially hemispherical element of said foot has another small threaded borehole where a fastening element is threaded in and substantially orthogonally engages the shank portion of said substantially threaded adjuster shaft so that said foot is securely fixed to the substantially threaded adjuster shaft.

15. The convertible carrying case and securement system for a post of claim 14, wherein each of said substantially hemispherical element of said foot assembly is attached to a plate with a high grip bottom surface, or attached to a suction cup, or attached to a ground screw, or attached to a stake, or equivalent that can grip a flat surface or secures said system over soft earth ground.

16. The convertible carrying case and securement system for a post of claim 2, wherein each knob’s top surface possesses a cavity shaped to allow engagement with a socket wrench drive.

17. The convertible carrying case and securement system for a post of claim 1, wherein the ground-facing surface of said case floor is lined with a high friction material, coating, or one side of a hook and loop fastener.

18. The convertible carrying case and securement system for a post of claim 1, further comprising a plurality of peg accommodating boreholes along the top and bottom surfaces of at least two non-floor cases panels of each case to enable vertical stacking of separate cases when a peg is situated in each of the aligned peg accommodating boreholes along the mating surfaces of the corresponding panels of each of the stacked cases.

19. The convertible carrying case and securement system for a post of claim 1, wherein the ground-facing surface of said case floor has a box-like bulge over a substantial portion of its area so that the bulge of one case fits just within the inner walls of these panels of a separate case below it to enable vertical stacking of separate cases.

20. The convertible carrying case and securement system for a post of claim 1, wherein a plurality of large binder-style clips that are arranged to hold separate but adjacent side panels of two separate cases to enable side-by-side coupling of said cases.

21. The convertible carrying case and securement system for a post of claim 1, wherein separate adjacent case side panels have a plurality of holes and a plurality of quick-release lock pins each disposed through one of the lined-up holes adjacent case side panels to couple two separate cases side-by-side.

22. The convertible carrying case and securement system for a post of claim 1, further comprising a case lid that is substantially parallel to the case’s floor panel and configurable to close the case into a full hexagon.

23. The convertible carrying case and securement system for a post of claim 22: wherein the ground-facing surface of said case floor has a box-like bulge over a substantial portion of its area so that the bulge of one case fits just within the inner walls of these panels of a separate case below it to allow vertical stacking of separate cases; wherein said lid further comprises a complementary depression topology of very slightly larger width and length than said bulge so that the bulge can engage the lid’s depression.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are provided to facilitate understanding in the detailed description. It should be noted that the drawing figures may be in simplified form and might not be to precise scale. In reference to the disclosure herein, for purposes of convenience and clarity only, directional terms such as top, bottom, left, right, up, down, over, above, below, beneath, rear, front, distal, and proximal are used with respect to the accompanying drawings. Such directional terms should not be construed to limit the scope of the embodiment in any manner.

[0016] FIG. 1 is a side view of EMB1 with its post in the deployed position.

[0017] FIG. 2 is an oblique view of EMB1 with its post in the stored position.

[0018] FIG. 3 is a side view of EMB1 with its post in the deployed position and a basketball hoop and backboard attachment.

[0019] FIG. 4 is a side view of EMB1 with its post in the deployed position and a real estate sign attachment.

[0020] FIG. 5 is a side view of EMB1 with its post in the deployed position and a real estate sign attachment secured into the ground with ground screws

[0021] FIG. 6 is a side view of EMB2 with its post in the deployed position.

[0022] FIG. 7 is an oblique view of EMB2 with its post in the stored position.

[0023] FIG. 8 is a side view of a stacked pair for compact storage and transport, where the coupling embodiment is pegs through holes of each of the separate case panels

[0024] FIG. 9 is a side view of a stacked pair for compact storage and transport, where the coupling embodiment has the floor bulge fit within the upper walls of the case below

DETAILED DESCRIPTION OF THE DISCLOSURE

I) Emb1 Embodiment (100a, Ref. FIGS. 1-5)

[0025] FIGS. 1 and 2 show the first system embodiment, EMB1 (100A), of the invention, which notably has an offset position of the post when deployed. EMB1 (100A) comprises a case (101), which serves as the structural foundation of the post. Said case (101) comprises a wheel-side panel (102) that contains the axle housing(s) for a pair of wheels (103) as shown in FIG. 1. On the opposite side of the wheel-side panel (102) of said case (101) is a parallel tube-side panel (104). Connecting each edge of the wheel-side panel (102) and tube-side panel (104) is a floor (129) of said case (101). In addition, connecting the remaining edges of said floor (129), wheel-side panel (102), and tube-side panel (104) are the side panels (145) that are oriented along the longer dimensional orientation or major axis of said case (101). An optional lid (not shown) can close the case (101) when the post is in its stored position to form a substantially hexahedral outer profile.

[0026] When the post is deployed, one support embodiment has the case (101) elevated from the ground by four adjustable and removable support structure (ADJSS) sub-assemblies, one near each bottom corner of EMB1, as depicted in FIGS. 1, 3, 4, 6, 8, and 9. Each sub-assembly of said ADJSS comprises a pair of feet (105) nearest to the tube-side panel (104) and another pair of feet 108) nearest to the wheel-side panel (102).

[0027] Each foot (105, 108) comprises a plate that would be in contact with the ground surface during deployment of the post or storage. Embodiments of said foot (105, 108) have a plate-like bottom with a high grip surface for applications requiring high grip and have a rubber or synthetic equivalent lining the ground surface interfacing side of said plate. Connected on the opposite side of the ground-contacting portion of the plate is a substantially hemispherical element with a center-top borehole to accommodate a substantially threaded adjuster shaft. Each substantially hemispherical element of said foot (105, 108) has another small threaded borehole (144) where a fastening element such as a cone point set screw can be threaded in and substantially orthogonally engages the shank portion of said substantially threaded adjuster shaft so that said foot is securely fixed to the substantially threaded adjuster shaft.

[0028] Each substantially threaded shaft disposed through the floor (129) of the case (101) or a case extension (107), wherein bottom surface of case extension (107) is substantially coplanar with case floor (129) and juts out from the tube-side panel (104) sufficiently enough to place the ADJSS sub-assembly off the tube-side panel (104). Connected to each said substantially threaded shaft is a knob (106, 126). Said knobs allow users to turn the substantially threaded shaft and feet so that the ground clearance at each corner of the case (101) is adjusted and as well as the state of the overall post’s vertical orientation without the need for any tools. The substantially threaded shafts connected to the knobs (126) at the wheel-side runs through a borehole structure (not shown) thick enough with a sufficient number of threads to engage the substantially threaded shafts and support the load. Torque can be supplemented with a surface embodiment of said knobs (106, 126) containing a cavity shape to allow engagement with a socket wrench drive and augment torque application from additional leverage provided by a wrench. FIG. 1 illustrates the full relation of the ADJSS sub-assemblies on the tube-side with the knob (106), foot (105), substantially threaded shaft connecting said knob (106) and foot (105) that is disposed through said case extension (107). An arrangement on the wheel-side of said case (101) similarly exists between the inside-case knob (126) and foot (108). The thickness of said case floor (129) and case extension (107) wherein said threaded shaft is disposed through needs to be sufficiently thick to minimize wear and tear with use under the weight of the rest of the system, EMB1, and attachments and should preferably surround at least five to ten threads of the threaded shaft. FIG. 2 shows that there is an ADJSS sub-assembly on each corner of EMB1 (100A).

[0029] As mentioned, embodiments of the ADJSS include the ability to be removed, which allows the possibility for the outward bottom facing side of the case floor (129) to be in direct contact with the ground. The ADJSS sub-assembly can be removed by detaching the foot (105, 108) from said substantially threaded shaft connecting said knob (106, 126) and turning said knob (106, 126) in the counterclockwise sense until the substantially threaded shaft backs away from the threaded borehole and be altogether separated from the rest of the system, EMB1. To augment the traction, the embodiments of the bottom surface of the case floor (129) have a high friction lining (e.g., rubber, the synthetic equivalent of rubber, DYCEM®), coating (VHT® TRACKBITE, a.k.a. VHT®), or even one side of a hook and loop fastener (e.g., VELCRO®). The ground in contact with the bottom-facing side of the case floor (129) may also have the same high friction lining, coating, and complementary side of a hook and loop fastener.

[0030] Also within the case extension (107) is at least one bore to house the shaft of the retractable pull handle (109). The pull handle (109) has a stop to catch the outside end of the bore so that a pulling force can be applied to the case (101) when EMB1′s post tubes (112, 121, 127) are in storage and being transported. During transport, EMB1 (100A) is lifted by the user via said pull handle (109) vertically off the ground at the tube-end so that the wheels (103) engage the ground surface.

[0031] EMB1 (100A) can optionally have construction levels (110, 111) comprising dyed liquid in a small clear hexagonally shaped pocket with sufficient gas void fraction to have a visible bubble and level indicators typically in the form of line markings on the outer surface of the hexahedral-shaped level. The exemplary embodiment has one level (110) attached near the top edge of one of said case’s side panels (145), by any one of a variety of means and oriented such that when the bubble is in between the level indicators, the pitch angle of the case (101) is at a zero degree or a neutral pitch angle corresponding with a perfectly vertical post as viewed from the side of said case. A second level (111) is fixed on one of the shorter case panels (102, 104) or panels adjoining and orthogonal to the case’s side panels (145), which for the exemplary embodiment, is shown in FIGS. 1-7 near the top of the inside surface of the wheel-side panel (102). This second level (111) provides the user feedback on the case roll angle. Said ADJSS can be manipulated to modify both pitch and roll angles of said case (101) and thus the orientation of the tubes (112, 121, 127).

[0032] For EMB1 (100A), the post comprises of the base tube (112) which is integrated with or molded as a T-bar element where the spanwise portion of the T-bar (125) forms an axis of rotation for the entire post assembly, as shown in FIG. 2. The spanwise distal ends of the T-bar (125) can be pinned (113) at its axis of rotation or alternatively reside in a molded cylindrical housing in the case (101) so that the only kinematic degree of freedom for the spanwise portion of the T-bar (125) is pure rotation.

[0033] For multi-segment telescoping post embodiments, said base tube (112) can have a tube-like cross-section to support bending loads in a mass-efficient manner while also allowing extension tube segments to telescope in and out, as shown in FIGS. 1-5. The first extension tube (121) projecting from said coaxial base tube (112) has a slightly smaller outer diameter than the inner diameter of said base tube (112) to allow telescoping displacement of said first extension tube (121) while portions of said first extension tube (121) are in said base tube (112). Pre-drilled holes are provided in said base tube (112) and first extension tube (121) so that a quick-release lock pin (122) can be disposed through lined-up holes of both said base tube (112) and first extension tube (121) to prevent the first extension tube (121) from sliding relative to said base tube (112) and fix the degree of overall post extension during post deployment. Each segment of a telescoping post embodiment can have markings such as painted lines to help align the holes for the quick-release lock pin (122) to go through. Ideally, the first extension tube (121) will be approximately as long as the base tube (112) and both a little shorter than said case (101) so that tube storage within said case (101) is possible and the maximum length of the overall post can be achieved with the minimum number of tube segments.

[0034] Additional hollow tube segment embodiments are possible for applications that require a higher-placed attachment. FIGS. 2-3 show an embodiment with a second extension tube (127) with analogous structure and features as said first extension tube (121). This means the second extension tube (127) projecting from said first extension tube (121) has a slightly smaller outer diameter than the inner diameter of said first extension tube (121) to allow telescoping displacement of said second extension tube (127) while a portion of second extension tube (127) is partially inside the first extension tube (121). Pre-drilled holes are provided in said first extension tube (121) and second extension tube (127) so that a quick-release lock pin (128) can be disposed through lined-up holes of both said first extension tube (121) and second extension tube (127) and thereby prevent second extension tube (127) from sliding relative to said first extension tube (121). Each segment of a telescoping multiple segment post embodiment can have markings such as painted lines on the other surface of said tubes (121, 127) to help align the holes for the quick-release lock pin (128) to go through. Other embodiments can allow for more extension tube segments in the manner described for said second extension tube (127).

[0035] To prevent rotation of the overall post during use and to help guide the overall post assembly between the stored and deployed position, a collar-connecting rod-slider mechanism is used, said mechanism comprising a collar (114), connecting rod (116), collar-to-connecting rod pin (115), slider (118), connecting rod-to-slider pin (117), and slider track (119). The collar (114) wraps closely around said base tube (112) while still allowing said collar (114) to slide relative to said base tube (112) with both minimum friction and collar-to-base tube gap. Said collar (114) has an eyelet pin bore on wheel-side that said collar-to-connecting rod pin (115) is disposed through. The other end of said connecting rod (116) is attached to said slider (118) via connecting rod-to-slider pin (117) disposed through an eyelet pin bore on said slider (118). Said slider track (119) is securely mounted to the spanwise center of said case floor (129) between the near proximal and wheel-side distal end of said case (101) so said slider (118) sliding on said slider track (119) helps guide the overall post assembly to and from the stored position (as shown in FIG. 2) and fully deployed position (as shown in FIGS. 1, 3, 4, and 5). In the fully deployed position, a quick-release lock pin (120) disposed through lined-up holes on both said slider (118) and said slider track (119) provides the constraining force to prevent rotation of the overall post assembly.

[0036] When the overall post is in the stored position (see FIG. 2), said base tube (112) and extension tube segments (121, 127) lie along the spanwise centerline across a substantial length of said case (101) above said slide track (119). For single tube or multiple-tube-segment post embodiments, the top of the overall post can rest on a ledge (123) that extends from the inside facet of the wheel-side panel (102) as shown in FIG. 2.

[0037] During storage, the case (101) has extra room for nets, quick-release lock pins, signs, and other items. For embodiments that accommodate basketball or sign applications, the case (101) can be large enough to have the basketball backboard or sign lie flat inside the case (101) without the need to be folded. To prevent interference with other components, ledges extending from the inner facet (not shown) of the case panels can be devised which the basketball backboard or sign rests on and is above the post. Straps (124) or handles can be attached to any of the case panels to facilitate the transport of EMB1 to and from a passenger vehicle or other storage location.

[0038] FIG. 3 shows an application embodiment of EMB1 (100A) with a basketball backboard and hoop attachment assembly (130, 131, and 132). All exemplary attachments comprise of an attachment collar or cup-like element (130) wherein said attachment collar or cup-like element (130) has an inner diameter that is slightly larger in diameter than the outer diameter of the top-most post segment (127 in FIG. 3) and the overlapping portion of attachment collar or cup-like element (130) and top-most post segment (127) is long enough to firmly secure the basketball backboard and hoop attachment assembly (130, 131, and 132). A quick-release lock pin (133) can be disposed through lined-up holes between the second extension tube (127) and cup-like element (130) to lock the cup-like element (130) further securely with the second extension tube (127). Markings such as painted lines along the axial direction on the outer visible surfaces of both the attachment collar or cup-like element (130) and second extension tube (127) can facilitate the lining up of the pinholes. Attachments can further extend into the geometry of the application and away from the wheel-side of said case (101), here exemplified by a short attachment extension (131) connecting said collar or cup-like element (130) and basketball backboard and hoop assembly (130, 131, and 132) as shown in FIG. 3. An embodiment of the backboard portion (132) of the basketball and hoop assembly may have a plurality of holes with a smaller diameter than that of a basketball to reduce wind resistance and tip-over proclivities and spaced far enough apart to preserve sufficient structural integrity. To augment stability, weights such as sandbags or equivalent can be placed in the case (101). Case (101) embodiments can include physical provisions (e.g., covers, not shown) to add weights without damaging said collar-connecting rod-slider mechanism (114-120), construction levels (110, 111), and inside-case knobs (126).

[0039] To illustrate the versatility of the present invention, FIGS. 4-5 show EMB1 (100A) with a sign attachment assembly (134, 135). Items attached to this embodiment of the convertible carrying case and securement system for a post can generally be called an “attachment structure,” where other examples comprise a lighting fixture, one side of a volleyball or tennis net, batting cage tunnel, boxing punching element, and multi-sports barrier backstop. Compared to the basketball application shown in FIG. 3, no second extension tube (127) is used because the height requirements for the exemplary real estate sign are not as much as a basketball backboard and hoop (132). However, certain compact embodiments of EMB1 may include two or more extension tubes or no extension tube without drawing away from the essence of EMB1′s design intent. In the same manner as the basketball application, the attachment begins with an attachment collar or cup-like elements (134) that closely slips around the first extension tube (121) and is deep enough to be secure. A quick-release lock pin (128) can be disposed through lined-up holes present in both the first extension tube (121) and cup-like element (134). Markings such as painted lines along the axial direction on both the cup-like element (134) and the first extension tube (121) can facilitate the lining up of the pinholes. Extending from the collar or cup-like element (134) is a boom (135) or structural member some distance over much of the case’s length, where signs can be suspended for easy visibility to the intended audience.

[0040] While FIG. 4 shows how EMB1 may be placed over a hard surface, FIG. 5 shows a foot sub-assembly embodiment where EMB1 is placed on soft ground. The plate-like feet (105, 108) shown in FIGS. 1, 3, and 4 may be interchanged with ground screw style feet as shown in FIG. 5 (146, 147) to augment securement. Alternative embodiments to the ground screw style feet (146, 147) comprise a stake, pins, rods, or any equivalent element that can easily be driven into soft ground.

II) Emb2 Embodiment (100b, Ref. FIGS. 6-7)

[0041] Certain applications may require a more proximally located post, as opposed to the offset configuration used in EMB1 (100A). Therefore, a second system embodiment, EMB2 (100B), of the present invention has also been devised, that is identical to EMB1 (100A) in every way except for the location of the post with respect to the case (101) as well as the manner which the post is attached to the case (101). More specifically, EMB2 (100B) proximally locates a stump (136) that is fastened to or structurally integrated with the case (101). The stump (136) can be solid or preferably hollow and tube-like to attain the requisite post-securement without incurring excess mass. Said stump (136) can slide into the circular opening of a separate hollow single-segment tube or base portion (137) of a multiple segment telescoping tube and is fixed together with a quick-release lock pin (138) disposed through lined-up holes present in both said stump (136) and said base tube (137). Alternatively, the outer surface of a separate single-segment tube or base portion (137) of a multiple segment telescoping tube slides into the opening of the hollow stump (136) and is fixed together with a quick-release lock pin (138) disposed through lined-up holes present in both the stump (136) and base tube (137).

[0042] Holes (142) for the stump (136) are clearly illustrated in FIGS. 6-7. Markings such as painted lines on both the outer surfaces of the inside surface of said case floor (129) and base tube (137) can facilitate the lining up of the pinholes. The base tube (137) can be part of a multiple segment telescoping post (137, 139, 141), wherein the exemplary embodiment is shown with two additional segments (139, 141), but other overall post embodiments can include fewer or more tubes and quick-release lock pins (140) disposed through lined-up holes of two overlapping co-axial tube segments to prevent overlapping tubes from sliding relative to one another.

[0043] As with EMB1, to augment stability, weights can be placed in the case (101). Case (101) embodiments include provisions (e.g., covers, not shown) to add weights without damaging said stump (136), construction levels (110 and 111), and inside-case knobs (126).

[0044] FIG. 7 shows the storage of the multiple segment telescoping post (137, 139, and 141) inside the case (101) of EMB2 (100B), placed lying down with the post extension tubes (139, 141) fully retracted. During storage, the case (101) can have extra room for nets, quick-release lock pins, signs, and other items. Items attached to EMB2 can also be generally called an “attachment structure,” where further attachment structure examples comprise a lighting fixture, heater, volleyball net, and table tennis net.

[0045] Because of the proximal location of the stump in EMB2, a case extension (107) is not necessary. Hence, the ADJSS sub-assembly that shows the knob (106), foot (105), substantially threaded shaft connecting said knob (106), and foot (105) that is disposed through said case extension (107) (see FIG. 2) can for EMB2 be alternatively disposed through the corners of the case floor (129) opposite to the corners where the knobs (126) are situated. Hence the ADJSS for EMB2 can be fully contained within the footprint of the case (101) itself and the pull handle (109) can be extended directly from the case (101).

III) Coupling Embodiments (ref. FIGS. 8-9)

[0046] To facilitate storage and transport embodiments of the present invention include means to group two or more systems. One embodiment, as shown in FIGS. 8-9, is the stackable approach, where either the EMB1 or EMB2 is stacked on top of another EMB1 or EMB2. Within this embodiment, there are several “sub-embodiments” that enable the coupling. FIG. 8 shows a plurality of peg accommodating boreholes (149) along the top and bottom surfaces of at least two non-floor cases panels (145 shown, but 102 and 104 are possible too) of each case to enable vertical stacking of separate cases when a peg (148) is situated in each of the aligned peg-accommodating boreholes along the mating surfaces of the corresponding panels of each of the stacked cases. The boreholes (149) can be slightly flared or opened up to provide peg guidance during the engagement. Alternatively, the case’s floor has a thin box-like bulge (150) over a substantial but not full portion of the case floor’s area, manufactured through molding or stamping, dimensioned so that the bulge (150) fits just within the inner walls of the case panels (102, 104, 145) of a separate case below it to enable vertical stacking of separate cases, as shown in FIG. 9. If the case (101) has an optional lid or sixth panel that is substantially parallel to the case’s floor panel and configurable to close the case into a full hexagon, said lid can have a complementary depression topology of very slightly larger width and length than said bulge so that the bulge can engage the lid’s depression. The lid’s depression is manufactured by molding or stamping.

[0047] Alternatively, a side-by-side coupling embodiment is achieved by a plurality of large binder-style clips, preferably spring metal or high elastic modulus synthetic material, around one of the side panels (145) of a case (101) with a side panel (145) of a separate case. An alternative side-by-side coupling embodiment would comprise of a plurality of holes on coupled case side panels and a plurality of quick-release lock pins each disposed through one of the lined-up holes the side panels (145) of the coupled cases (101).

IV) Preferred Materials and Geometry

[0048] The cases (101) of EMB1 (100A) and EMB2 (100B) can be made of a broad variety of plastics, metal, vinyl, fiberglass, or carbon fiber depending on the application. Tubes/stumps (112, 121, 127, 136, 137, 139, 141, collars (114), T-bar (125), cup-like attachment elements (130 and 134), boom (135), pin shafts (113, 115, 117), or pin portions of quick-release lock pins (120, 122, 128, 133, 138, 140), attachment extension (131), connecting rod (116), slider (118), slider rail (119), threaded shaft of each ADJSS sub-assembly, and shaft attached to pull handle (109) are preferably made from metal with high strength to weight ratio, such as aluminum, but materials like plastic or carbon-fiber may be alternatively be used if the application sees fit. The ledge (123), pull handle (109), each wheel excluding the tire (103), feet (105, 108) of each ADJSS sub-assembly, the handle of quick-release lock pins (120, 122, 128, 133, 138, 140) as well as the turning knob (106, 126) for each ADJSS sub-assembly can be made from a broad variety of plastics or vinyl. An optional embodiment can include a rubber or vinyl coating for additional grip. The tire portion of said wheel (103) and bottom surface of each ADJSS foot (105, 108) can be made of rubber or synthetic rubber for high grip. The case straps (124) or handles can be made from woven textile, a variety of plastics, or metal depending on the intended application.

[0049] For parts where one component slides relative to another like two co-axial tubes or a collar around a tube or a cup-like element around a tube, the gap between the sliding surfaces should be large enough to allow for smooth low friction sliding but small enough to avoid “slop” that excessive part-to-part gaps can introduce. The dimensional clearances that support such characteristics are on the order of dozens of thousandths of an inch to a few tenths of an inch.

[0050] The dimensions including the thickness of the case panels (102, 104, 145) depend on the material used but are such that sufficient rigidity for the application is provided. Furthermore, the case panels (102, 104, 145) may be completely flat, reinforced with ribbed topology, or be internally corrugated, or fiber-reinforced.

[0051] Many alterations and modifications may be made by those having ordinary skill in the art without departing from the spirit and scope of the embodiment. Therefore, it must be understood that the illustrated embodiment has been set forth only for the purposes of example and that it should not be taken as limiting the embodiment as defined by the following claims. For example, notwithstanding the fact that the elements of a claim are set forth below in a certain combination, it must be expressly understood that the embodiment includes other combinations of fewer, more, or different elements, which are disclosed herein even when not initially claimed in such combinations.

[0052] DYCEMU® is a registered trademark of Dycem Limited.

[0053] VELCRO® is a registered trademark of Velcro BVBA.

[0054] VHT® is a registered trademark of Sperex Corporation.