Abstract: A connection structure for toy tents having a first connection component, a second connection component and a connection buckle, the first connection component and the second connection component are clamped together, the connection buckle is clamped with the first connection component and the second connection component, an outer hemisphere of the first connecting assembly is clamped with an outer hemisphere of the second connecting assembly and an inner hemisphere of the first connecting assembly is clamped with the inner hemisphere of the second connecting assembly.

Abstract: A game piece assembly includes: a front surface formed in a first predetermined shape and including a predetermined number of pips, a back surface formed in a second predetermined shape, a side surface extending between the front and back surfaces, wherein the front surface, the back surface and the side surface define a hollow space that is configured to hold a prize therein in a closed configuration.

Abstract: Plastic grid or framework arrangements are used to support and position of bowls that hold flower arrangements, candles, letters, and other decorative elements. These grids are deployable in water fountains, indoor and outdoor pools, and other small bodies of water during festive occasions or for longer term decorative display. The grid themselves do not float, and are positioned below the surface of the water, and thus are not readily visible. Buoyancy is provided at the hubs that form nodes in the grids. The hubs also support floating bowls containing various decorative elements. The resulting effect is that the various decorative elements appear to be floating on the surface while the sub-surface grid structure maintains their relative positioning, keeping the bowls from clumping together at the edges or in the corners of the pool or fountain.

Abstract: A joint includes a shell that is hollow and at least partially spherical. The shell includes a plurality of shell rail sections including a first shell rail section. The first shell rail section includes a portion of an outer surface of the shell, a portion of an inner surface of the shell, and an opening edge section that defines a shell opening. The joint also includes a plurality of rotatable members including a first rotatable member. The first rotatable member includes an outer cup positioned at least partially outside of the shell and having an outer track surface, and an inner cup positioned at least partially inside of the shell and having an inner track surface. The first shell rail section is positioned at least partially between the outer and inner track surfaces.

Abstract: Environment isolation structures may include a frame and flexible panels at least partially covering, and attached to, the frame. The frame may include multidirectional node connectors including multiple locations for attachment. At least some of the locations for attachment may be located on different sides of the multidirectional node connectors. Poles configured to telescope to selectively fixable lengths may include connectors affixed to longitudinal ends of the poles. Each connector may be configured to selectively attach to a respective location for attachment on a given side of a respective multidirectional node connector to form the frame.

Abstract: A strut-and-node truss design that is applicable to space frame structure designs can be assembled with using robotic (semi-autonomous and/or fully autonomous) or telerobotic assembly/joining. The assembly system can include a storage module that includes the components for assembly and an assembly module that can retrieve and assembly the components. The resulting truss structure can be connected to an antenna (e.g., carried by the storage module) for deployment. The assembly module can be operated repeatedly in conjunction with additional resupply systems that provide additional components for assembly.

Abstract: A center upper frame nodal connection fabrication comprising a top surface, a bottom surface opposite the top surface, two side surfaces, a front surface having a plurality of integral planes oriented at angles relative to each other, and a rear surface opposite the front surface. The top surface, the bottom surface, and the two side surfaces can be weldably attached to each other and the front and rear surfaces to form a structure of the center upper frame nodal connection fabrication. The integral planes of the front surface are configured to weldably attach to respective elongate support members of a space frame. The rear surface is configured to weldably attach to a center upper frame connection casting of the space frame.

Abstract: A self-locking connection system for modular construction (e.g., MiC and PPVC) is provided for interlocking an upper module column to a lower module column. A horizontal load transfer plate has first and second inner sleeve portions positioned beneath and above the plate. The sleeves are configured and dimensioned to be received within the respective module columns. Spring-loaded latches in both sleeve portions engage respective column receiving apertures. Each latch may include a latch plate having a wedge-shaped latch protrusion connecting to a vertical latch surface. The latch plate has one or more latch plate apertures for receiving a rod within a coil spring. An optional second reversible self-locking mechanism interlocks the connected modules to a building load-bearing support such as a core wall. The second self-locking mechanism includes an angled protrusion extending from the horizontal load transfer plate to mate with a protrusion-receiving structure embedded in the load-bearing support.

Abstract: The system includes a configurable partition curtain track. The partition track may be installed further away from the ceiling to allow other equipment to more easily traverse across the room, without the need to move or adjust the partition track. Moreover, the installation being further removed from the ceiling eliminates the need for a ladder when changing the curtain. The system may include one or more of a loading bracket, an omni cube, an angled tube, a suspension hanger, a wall mount, a handle, a track and/or a telescoping track.

Abstract: A gusset plate assembly for use in connecting at least two beams to a hollow tubular column in a building. The gusset plate assembly can receive said at least two beams in a biaxial orientation of said beams. The gusset plate assembly comprises gusset plates sized for transferring the weights of said at least two beams and their reaction forces and bending moments from the application of severe load conditions acting on the building to the hollow tubular column. At least one of the gusset plates receives a portion of a second of the gusset plates. A joint penetration groove weld joining the first and second gusset plates together allows the gusset plate assembly to be free of welds on its internal corners. A method of assembling a gusset plate assembly is also disclosed.

Abstract: Plastic grid or framework arrangements are used to support and position of bowls that hold flower arrangements, candles, letters, and other decorative elements. These grids are deployable in water fountains, indoor and outdoor pools, and other small bodies of water during festive occasions or for longer term decorative display. The grid themselves do not float, and are positioned below the surface of the water, and thus are not readily visible. Buoyancy is provided at the hubs that form nodes in the grids. The hubs also support floating bowls containing various decorative elements. The resulting effect is that the various decorative elements appear to be floating on the surface while the sub-surface grid structure maintains their relative positioning, keeping the bowls from clumping together at the edges or in the corners of the pool or fountain.

Abstract: A connector device for connecting to one or more pipes. The connector device having one or more arms with static and flexible portions. The connector device connects pipes or other types of tubing by inserting the arms of the connector device into the openings of the tubing. A flexibility of the flexible portions enables the connector device to accommodate varying dimensions of inside diameter of pipes or tubing and to provide a friction fit.

Abstract: A computer-implemented method for space frame design involves constructing a load stress map in a geometrical boundary representation of a design space, defining attachment points and load application points in the design space, creating a starting network of interconnecting lines between each two of the attachment points and load application points in the design space, assigning load application factors to each line of the starting network of interconnecting lines based on values of the load stress map, generating potential space frame designs by culling different subsets of lines of the starting network of interconnecting lines for each potential space frame design according to variable culling parameters, evaluating the potential space frame designs with respect to optimization parameters, combining the culling parameters for the potential space frame designs the performance score of which is above a predefined performance threshold, and iterating the steps of generating potential space frame designs and e

Abstract: The invention relates to a rack for a switchgear cabinet arrangement, comprising a main frame that includes four vertical profiled struts and eight horizontal profiled struts, four of said profiled struts forming a rectangular rack frame (4) having a constant cross-section; the rack frame has a peripheral receptacle which is formed by at least two sides of the profiled struts and which is open towards an external side of the rack frame; the disclosed rack is characterized in that a rectangular additional frame is inserted into the receptacle.

Abstract: A connector assembly, having an upper connector coupled to a lower connector and a gusset plate sandwiched between the upper and lower connectors. The upper and lower connectors allow for coupling to adjacent upper and lower connectors, respectively, allowing for addition of a modular unit to a pre-existing modular structure. Also, ways of coupling adjacent upper connectors and coupling of adjacent lower connectors when coupling a modular unit to a pre-existing modular structure are provided.

Abstract: A connector device for connecting to one or more pipes. The connector device having one or more arms with static and flexible portions. The connector device connects pipes or other types of tubing by inserting the arms of the connector device into the openings of the tubing. A flexibility of the flexible portions enables the connector device to accommodate varying dimensions of inside diameter of pipes or tubing and to provide a friction fit.

Abstract: The present disclosure describes a base structural building module employing a core structural member having an array of upwardly and outwardly and downwardly and outwardly extending braces or arms extending therefrom. Tubular cans are mounted at the ends of each of the upper and lower arms to receive piles. One upper arm is aligned and paired with one lower arm and the pair's respective cans are aligned about their can axis. The modules employ flexible design by varying the lengths of the arms and their respective inclination or declination angles. Modules can be stacked one on top of another (and secured) to form multi-tiered structural building jackets for building vertical structures such as, for example, oil and gas platforms used onshore or offshore as well as other structures. Each tier can also comprise multiple modules joined laterally together to provide a wide variety of potential template configurations and building applications.

Abstract: A connector joint device for connecting rods or arms at a joint or intersection. The connector joint includes more than one hexagon shape faces, more than one octagon shape faces, more than one 4-sided polygon shape faces. A first face among the more than one octagon shape faces has a hole extending in a direction at an angle with respect to a perpendicular line to the first face.

Abstract: Disclosed embodiments include a structural assembly having a first panel having a first edge and a first aperture adjacent to the first edge, and a clamp having a first piece that passes through the first aperture, a second piece, and a fastening portion that fastens together the first piece and the second piece. The structural assembly may include a second panel having a second edge and a second aperture adjacent to the second edge, and the second piece passes through the second aperture, and the clamp holds the first panel and the second panel together.

Abstract: A building block system includes a block body having four side faces offset 90 degrees from an adjacent side face and having a side edge intermediate adjacent side faces. The block body includes a top face perpendicular to the side faces and a bottom face opposite and parallel to the top face that is perpendicular to the four side faces, the top and bottom faces having a plurality of upper and lower edges, respectively, intermediate the four side faces, respectively. The system includes a plurality of receiver members, a single receiver member being positioned on a respective the side edge and on a respective the upper edge and on a respective the bottom edge. The system includes a plurality of connector members positioned intermediate the plurality of receiver members, respectively. Each receiver member has a configuration operable to receive a respective connector member in a locking engagement.

Abstract: The invention provides a patient supporting plate (2) consisting of at least one first and one second patient supporting components (3, 4) and an accessory part (7). The first or the second patient supporting component (3, 4) is provided with a hinge (5) having a swivel axis (6). The hinge (5) has a drive element (11) for swiveling the patient supporting components (3, 4), as well as at least one coupling element (8) for coupling the first patient supporting component to the second patient supporting component (3, 4). The drive element (11) and the coupling element (8) are arranged juxtaposed in the direction of the swivel axis (6) and can be fastened to one another by means of at least one first detachable fastening element (17).

Abstract: A module for a toy construction kit includes an elongated, monolithic body made from a non-magnetic material and having a central section, a pair of opposed ends, and a pair of tapered neck sections, one of which is positioned between the central section and one end of the body and the other of which is positioned between the central section and the other end of the body. One end of the body is at least partially covered by a pair of dome-shaped shells positioned on opposed sides thereof. The other end of the body is at least partially covered by another pair of dome-shaped shells positioned on diametrically opposed sides thereof. Each one of the shells is made from a magnetic material and is provided with a receptacle for receiving a plug of the non-magnetic material which forms a corresponding end of the body to thereby secure the shells to the body when the body and shells are integrated by way of a co-molding process.

Abstract: A modular building structure, obtained by assembling a plurality of module frames to obtain a complex frame is provided. The structure includes walls and floors implemented by cladding panels, and the module frames have a substantially parallelepiped shape. The structure includes connecting knots joining module frames adjacent on a same plane, on the lower side or upper side, at angles, or which provides for the connection of the module frames to a basement or to a roof structure. Each knot has a box-like structure with an inner core shaped like a hollow straight parallelepiped, formed by six walls facing two by two, each wall has an opening that form respective channels opened according to orthogonal axes. At each opening, the knot includes a corresponding supporting plate, parallel or orthogonal therebetween; each supporting plate, extending beyond the plane defined by one or more adjacent supporting plates, defines a respective rest.

Abstract: A detachable frame of a light-small sprinkling machine includes angle steel pieces, tiepieces, support bars, support upright rods, top rod with slots, and wheels. The components of the frame are connected through threaded connections, so that the frame can be disassembled and removed easily. The distance between sprinkler heads and the mounting height of the sprinkler heads may be changed by means of free movement of turning hooks in the top rod with slots. The number of spans of the rod of the machine are be selected according to the topographic structure and can be changed by means of threaded holes in the two ends of the top rod with slots, and thereby the length of the rod can be changed. Employing low-pressure sprinkler heads and utilizing the turning effect of movable swivel shafts, the irrigation sprinkling machine can be turned to any direction freely.

Abstract: The present disclosure relates to toy construction kits and assemblies and, more particularly, to connectors that are mechanically attached to and extend from the corners of geometric frame-like modules. The connectors are also adapted to interface with and magnetically connect to linear magnetic modules, whereby a user can create multiple construction platforms upon which a number of diverse and interesting structures can be assembled.

Abstract: A display system including a first display frame including a plurality of frame members interconnected by junction connectors. The plurality of frame members each have a hollow interior. One or more diametrically polarized magnets is disposed to rotate freely within the hollow interior of at least one of the frame members.

Abstract: Deck components comprising a post sleeve and flanges extending away from side walls of the post sleeve are described. The post sleeve includes a rectangular cross section. Interior flanges can comprise attachment holes for affixing the interior flanges to box-frame-segments having square-cut edges. Box-frame-segments and box-frame-segment attachments with square-cut edges can abut the exterior surface of a post sleeve side wall. Use of the post sleeve can reduce or eliminate the need to produce beveled joints box-frame-segments and box-frame-segment attachments. Post sleeves can comprise a post sleeve extension extending above box-frame-segments that attach to the flanges of the post sleeve. The post sleeve and post sleeve extension can comprise a single metal extrusion. Alternatively, the post sleeve extension can be attached to the post sleeve. In one example, a post sleeve extender is placed into a post sleeve and the post sleeve extension is placed onto the post sleeve extender.

Abstract: A spatial structure that enables the assembly and disassembly of architectural elements quickly and easily, ensuring the necessary structural robustness and which basically comprises a node (1) with a plurality of sockets (2), a bar (3) intended for insertion at either of the two ends thereof in said sockets (2), a perforated screw (5) whose inner surface (6) allows the insertion of the end of the bar (3) and whose outer surface is coupled to the sockets (2), and a portion of flexible washer (8) suitable for insertion into the socket (2) of the node (1) and closing by compression as a result of the thrust exerted by the perforated screw (5) to adopt the shape of a substantially closed washer such that said bar (3) is locked inside the perforated screw (5), preventing the disassembly of the structure but not the rotation of the bar (3) inside the socket (2).

Abstract: The corner cover for a trim member of a building wall siding or cladding may have first and second panels each with opposed substantially planar faces inclined at an included substantially right angle to each other with a longitudinally extending vertex. Each panel may have a substantially linear bottom end extending substantially perpendicular to the longitudinal vertex. The lower portion of each panel may have a first edge portion spaced from and extending substantially parallel to the longitudinally extending vertex and an upper portion with a second outer edge portion at least in part spaced from and closer to the longitudinally extending vertex than the first edge portion and at least in part may be inclined to both the bottom and first edge portions of its associated panel.

Abstract: Methods, systems, and apparatus, including medium-encoded computer program products, for designing three dimensional lattice structures include, in one aspect, a method including: calculating a radius of incidence for respective pairings of beams of different sizes that converge at a junction in a lattice; determining a maximized radius of incidence for each of the beams based on the radii of incidence for the pairings with that beam; comparing the maximized radii of incidence to find a global radius for the junction; calculating local intersection points and global intersection points, respectively, for each of the beams with a local sphere defined by the maximized radius of incidence for that beam and with a global sphere defined by the global radius for the junction; and generating meshing with sockets for the beams at the junction using the local intersection points and the global intersection points.

Abstract: The present disclosure describes a base structural building module employing a core structural member having an array of upwardly and outwardly and downwardly and outwardly extending braces or arms extending therefrom. Tubular cans are mounted at the ends of each of the upper and lower arms to receive piles. One upper arm is aligned and paired with one lower arm and the pair's respective cans are aligned about their can axis. The modules employ flexible design by varying the lengths of the arms and their respective inclination or declination angles. Modules can be stacked one on top of another (and secured) to form multi-tiered structural building jackets for building vertical structures such as, for example, oil and gas platforms used onshore or offshore as well as other structures. Each tier can also comprise multiple modules joined laterally together to provide a wide variety of potential template configurations and building applications.

Abstract: A triangular frame metering structure includes three side beams and three end pieces each connected between two of the side beams. Each end piece top and bottom is configured for connection of support loads, with all support loads connecting to the metering structure at the top or bottom of one of the end pieces. Secondary mirror focusing mechanisms mounted on the end piece tops support pairs of secondary mirror struts. Strut mounts on the end piece bottoms provide connections to pairs of primary mirror struts, base struts, and instrument struts. All support loads connected to the metering structure are thus connected only to the corners of the metering structure and are connected at a same radial distance from a central longitudinal axis. The metering structure has reduced mass with high stiffness for supporting large aperture telescopes.

Abstract: A snap-fit connector includes a female component and a male component. The female component has a retaining hole and two through bores communicating spatially with the retaining hole. The male component has two spaced-apart hooks inserted into the retaining hole. Each of the hooks has a resilient arm, and a protrusion retained in a respective one of the through bores. The protrusion of each of the hooks has an abutment surface abutting against the female component, and a positioning recess formed in a guide surface thereof and accessible via the respective one of the through bores.

Abstract: A connection device for assembling together a receiver first section member presenting an inner cavity, and a fastener second section member presenting a groove having a constricted opening. The connection device includes a cage forming a pair of jaws for coming into engagement in the groove. The device also including a resilient drive mechanism for urging a spacer member between the jaws so as to space them apart in such a manner as to come into engagement with the groove through the constricted opening; and a pivotable lever that pivots about a pivot pin, the pivotable lever including a lever arm and a thrust head that engages the spacer member so as to move it against the force exerted by the resilient drive mechanism on the spacer member.

Abstract: A modular structure for gymnasiums or similar, includes at least one pair of supports (2) for positioning near facing walls of a room, a beam (4, 30, 60) connected at its ends (4a) to the supports, the supports being provided with connection elements (6) configured to be shifted from a tightened position in which they make the beam (4, 30, 60) integral with the supports (2), to a released position in which they allow the beam (4, 30, 60) to translate with respect to the supports (2), connection elements (10) for exercise equipment being provided on the beam (4, 30, 60), the elements being configured to translate along the beam (4, 30, 60).

Abstract: Low cost, durable, reusable, lightweight, inexpensive, simple, easy to assemble/disassemble, transportable goal posts. Each goal posts may be composed of single piece T reinforcements and a single piece cross bar reinforcement, as well as readily available construction materials, such as PVC pipe. The bodies of the single piece reinforcements are sized so that the pipes forming the upright posts and crossbar have the same length. Assembly, disassembly, and transportation are simplified. The disassembled components can be carried in vans and SUVs. Internal reinforcements allow flexible, low cost materials such as PVC pipe to be used while maintaining a professional, aesthetic appearance.

Abstract: The invention is about a supporting framework, having nodes and at least one framework component. The framework components are either panels or diagonal braces or a combination of them. At least one node has a connector and at least one bar. At least one connector has a plurality of bar receiving members that are located in a corresponding plurality of faces of an imaginary polyhedron and at least one bar has a first end, fixed to the one of the bar receiving members of the connector of a first node and a second end, fixed to the corresponding bar receiving member of the connector of another node.

Abstract: An erectable canopy framework comprising a base frame and a roof frame. The roof frame is operative to support a canopy above the base frame and is removably mountable to the base frame. The base frame includes a plurality of upright support members, a plurality of cross members, each interconnecting adjacent upright support members, and a plurality of mounts disposed on the upright support members. Each mount includes a mount opening and each cross member includes a scissor assembly to permit movement of the base frame between expanded and a collapsed states. The mounts are operative to fasten the cross members to the upright support members. The roof frame includes a plurality of rafters each connectable to a corresponding mount opening. The framework comprises a plurality of rafter fittings each adapted for insertion into a corresponding mount opening and connectable to a corresponding rafter.

Abstract: A joint for use in making a shipping crate includes a base and a pair of orthogonal channels which extend upwardly from the base and are open from above. Each channel has an inner closed end and an outer open end, and has a width, along a length of the channel between the inner and outer ends, which is greater than the width at the inner and outer ends. The channel is preferably defined by an outer wall, an inner wall, and a pair of reinforcement members located at the inner and outer ends to define the region of smaller width at each end. The reinforcement members are preferably hollow vertical members which are rectangle or square in cross-section and which extend from the inner wall towards the outer wall. Preferably, at their inner ends, the channels share a reinforcement member.

Abstract: The invention relates to a double assembly system that can be used for pivoting, rotating or folding operations. The invention is suitable for use in the production of furniture or other construction elements and structures, for the purposes of folding and unfolding, opening and closing, and, depending on the spatial orientation thereof, for securing a part in its use position. The invention can be used to join generally planar parts. The invention is formed by a group of elements (1) which are interlocked with other elements and which, when joined, allow a rotational movement through a specific, pre-defined angle.

Abstract: A modular truss system includes six-way box connectors to which truss beams can be bolted and pinned together in a wide variety of configurations and to any or all of the six identical faces. Each box connector face and each truss beam endplate is fitted with matching center holes for bolts and spring pin arrangements on the peripheral corners. These make aligning and attaching the truss beams and box connectors to one another a quick and simple job that does not require any tools. The truss beam endplates have one or more spring pins and a center hole that matches the ones in each of the six faces of the box connectors.

Abstract: An apparatus for connecting at least one elongated element is provided. The apparatus include a spherical connection member. The apparatus further includes a plurality of connection mechanisms disposed on the spherical connection member and configured to connect to the at least one elongated element.

Abstract: Various embodiments of an invention regarding universal fence gates are described including a specially shaped fence gate connector that may act as an elbow and/or a T-member, a universal fence gate kit with parts for assembling a universal fence gate including a specially shaped fence gate connector, a universal fence gate assembled using a specially shaped fence gate connector, and methods for assembling fence gates using a uniquely shaped fence gate connector.

Abstract: A corner insert and facing, finishing, protecting, reinforcing, stabilizing and structurally supporting member for establishing and finishing a transition between a first surface, a second surface and a third surface, the first, second and third surfaces forming an inside corner in furniture. One corner insert embodiment includes a rear face portion oriented inwardly in relation to the inside corner, which is securable to the inside corner, and from which integrally extends an external frontal or basal face portion, the lateral edges of which are securable alone or with the addition of an integral pin or barb to the inside corner, positively locking and engaging with the interior corner surfaces so as to firmly anchored therein and thereto.

Abstract: A sheet metal clip for connecting the ends of three or four grid runners with their longitudinal axii intersecting at a common center and at obtuse or acute angles relative to each other, the clip having a leg for each one of the grid runners, each leg, in use, extending in a vertical plane from the center and being permanently bendable at the center to allow the leg to be adjusted to a desired angle of a respective grid runner.

Abstract: A locking collar that surrounds a hub of a space frame structure. Struts radiating from the hub pass through openings in the locking collar. The openings each have a size relative to a width of each of the struts that provides a locking action to the struts and limits movement of the struts, which gives support to a shape of the space frame. The locking collar provides support to beams of wood or other materials that are attached to the struts without placing stress on the hub.

Abstract: A three dimensional polyhedron frame structure formed by a plurality of rigid rods and a plurality of hubs in which each rod has a retractable bolt at at least one end for assembly into a socket of a hub having a plurality of sockets that accept a plurality of rods with the rods being assembled to the hubs in different directions to form frames of various polyhedron shapes. A board is attached to at least one horizontal rod forming a vertical face of a prism frame so that its angle of inclination can be adjusted to demonstrate a principle of gravity. Preferably the rods are electrically conductive and the hubs are non-conductive so that wires can be connected to selected rods to form an electrical circuit.

Abstract: The present invention includes a system for connecting tubes or rods, which are preferably uni-directional pultruded, filament wound, or roll-wrapped carbon-fiber tubes or rods, together to form trusses and other structures using a series of connector pieces preferably bonded together with adhesive.

Abstract: The present invention relates to a connection device installed on a top of a canopy tent, comprising: a main body having a hollow interior, a sliding member having an interior with a downwardly protruding cylinder, support poles each having one end hinged to the main body, and the other end connected to a tent pole for standing the tent fabric upright, a joint bar having one end hinged to the sliding member, and the other end having one side hinged to a first connection bar hinged to the support pole and the other side hinged to a second connection bar hinged to the main body; The hollow interior of the main body is equipped with a compression spring and a spring holder. The cylinder of the sliding member is fitted into the hollow interior of the main body from the top of the hollow interior to be movable in the upward and downward directions to set up or taken of the tent canopy.

Abstract: Box shaped device for joining cylindrical rods and flat panels having multiple orthogonal holes on three axis allows quick joint of two or more rods or panels or combination thereof in two or three axis. The holes are threaded to allow screws to lock the rods or panels in position. The rods being slightly smaller than the size of the holes, can be inserted thru the holes and locked at any position, allowing flexibility to construct any frame structure of any size, and do not require rods or panels with specially shaped attachment points. Special purpose blocks can be made with holes at different angles or special shapes for mounting panels etc.