Abstract: An aluminum extruded plank preferably includes a top member, a first side member, a second side member and a middle support member. The first side member extends downward from a first end of the top member. The second side member extends downward from a second end of the top member. A first bottom member extends inward from a bottom end of the first bottom member. A second bottom member extends inward from a bottom end of the second bottom member. The middle support member preferably includes at least one middle side member and a middle bottom member. A lengthwise engagement hook extends outward from an upper portion of the first side member. A lengthwise hook slot is formed in an upper portion of the second side member to receive the lengthwise engagement hook.

Abstract: A locking fastener utilizing an inserted key preferably includes a fastener and a lock key. The fastener includes a drive head and a threaded shank. The drive head is preferably a countersunk head. A drive cavity is formed in a top of the drive head. The threaded shank extends from a bottom of the drive head. The lock key preferably includes a tapered head and a shank. The shank extends downward from a bottom of the tapered head. A head projection extends outward from a rear of the tapered head. At least one shank projection extends outward from a front of the shank. A key slot is formed in a side of the drive head and a side of the threaded shank. A head retention slot is formed in the key slot, adjacent a top of the drive head to receive the head tapered projection.

Abstract: A tubular beam with mechanically fastened end plates preferably includes a tubular member and at least one end plate. At least one cross plate may be secured within the tubular member with fasteners to strengthen thereof. The tubular member may have any suitable cross section including, square, rectangular, hexagonal, triangular or the like. A plurality of hand access openings, a plurality of beam fastening holes and a plurality of fastener holes are formed through a side wall of the tubular member. The end plate is attached to an end of the tubular beam with a plurality of fasteners. A fastener gusset may be formed in inside corners of the tubular member to accommodate a blind fastener hole for attaching the at least one end plate. Each end plate preferably includes a hand access opening, a plurality of plate fastening holes, and a plurality of blind fastener holes and/or fastener holes.

Abstract: A tubular beam with mechanically fastened end plates preferably includes a tubular member and at least one end plate. At least one cross plate may be secured within the tubular member with fasteners to strengthen thereof. The tubular member may have any suitable cross section including, square, rectangular, hexagonal, triangular or the like. A plurality of hand access openings, a plurality of beam fastening holes and a plurality of fastener holes are formed through a side wall of the tubular member. The end plate is attached to an end of the tubular beam with a plurality of fasteners. A fastener gusset may be formed in inside corners of the tubular member to accommodate a blind fastener hole for attaching the at least one end plate. Each end plate preferably includes a hand access opening, a plurality of plate fastening holes, and a plurality of blind fastener holes and/or fastener holes.

Abstract: A close quarters ratchet and specialty fastener having a drive socket in a threaded shaft. The close quarters ratchet preferably includes a handle, a ratchet lever, a non-rotation drive unit and a drive socket unit. The handle includes a top handle member and a bottom handle member. The non-rotation drive unit is retained in an end of the top handle member. The drive socket unit is rotatably retained in an end of the bottom handle member. The ratchet lever is pivotally retained between the top and bottom handle members. The non-rotation drive unit preferably includes a spring-loaded drive tool. The drive socket unit preferably includes a drive socket and a gear ring. A rotation projection of the ratchet lever engages the gear ring. Squeezing the handle and the ratchet lever causes the rotation projection to rotate the drive socket unit. A latching unit engages the gear ring.

Abstract: An adjustable telescoping plank preferably includes an outer plank, an inner plank and a drive device. The outer plank includes a substantially rectangular cross section. The drive device is retained on an inside of substantially a first end of the outer plank. The inner plank includes a substantially rectangular cross section. A lead screw nut is retained on a first end of the inner plank. The inner plank is sized to be received by an inner surface of the outer plank. The drive device preferably includes a lead screw, a drive gear, a driven gear and a drive shaft. The drive shaft rotates the lead screw through the drive gear and driven gear. The lead screw engages the lead screw nut to axially move the inner plank relative to the outer plank. A contact member may be pivotally retained on a front of the inner plank.

Abstract: A hidden extrusion connector preferably includes a base bar and at least one vertical bar. The base bar includes a rectangular cross section, which is sized to be received by an inner channel of a first extrusion. A plurality of base threaded holes are formed vertically through the base bar. Each vertical bar includes a rectangular section, which is sized to be received by an inner channel of a second extrusion. A plurality of threaded holes are formed horizontally through the vertical bar. A threaded post extends from a bottom of the vertical bar. The threaded post is sized to be threadably received by one of the plurality of threaded holes in the base bar. The plurality of threaded holes in the base bar and the vertical bar are sized to threadably receive a threaded fastener, such as a set-screw.

Abstract: A pipe extrusion includes a cross-section with a substantially round outer perimeter. A round portion of the substantially round outer perimeter preferably has an included angle of less than 300 degrees. A pair of inward facing flanges terminate the round portion. A cross member is formed across an inner area of the round portion. The cross member is parallel with the pair of inward facing flanges. A position of the cross member relative to a centerline of the round portion is between 0-20 degrees from the center line of the round portion. The pipe extrusion is preferably fabricated from any suitable aluminum alloy, such as T-6 aluminum.

Abstract: A high load pivoting caster with integral jack preferably includes a wheel mounting base, a pair of wheels, a high load jack, a slewing ring, an wheel axle and an attachment cube. The wheel mounting base includes a base plate, and first and second pairs of wheel support plates. The first wheel is retained between the first pair of wheel support plates. The second wheel is retained between the second pair of wheel support plates. The wheel axle is inserted through the pair of wheels and the first and second pair of wheel support plates. The slewing ring preferably includes a stator ring, a rotor ring, an indexing plate and a set of rotary bearings. An opening is formed through the indexing plate to receive an outer perimeter of the high load jack. The attachment cube is preferably attached to a top of the indexing plate with welding.

Abstract: A tubular beam extension includes three sizes. A first tubular beam extension includes a center tube and four corner retention projections. A single corner retention projection extends outward from each corner of the center tube. Each corner retention projection includes an extension member and a retention member. A retention cavity is formed in the retention member. A second tubular beam extension includes a rectangular tube, the four corner retention projections and four side retention projections. Each side retention projection includes a first extension member, a second extension member and a flange member. A single flange member is located between two adjacent corner retention projections. A third tubular beam extension preferably includes a rectangular tube, the four corner retention projections, two end retention projections and at least four side retention projections.

Abstract: A structural concrete panel preferably includes six connector boxes, a plurality of conduits, a plurality of rebar rods, a plurality of insulation blocks, a plurality of rebar mesh sheets and a concrete outer layer. Four corner connector boxes are located in each corner of the structural concrete panel. A side connector box is located between two corner connector boxes on each side of the structural concrete panel. Each end of a plurality of rebar rods are secured to two adjacent connector boxes. Two bottom rebar mesh sheets are retained on a bottom of the structural concrete panel. The plurality of insulation blocks are laid on the two bottom rebar mesh sheets. Two top rebar mesh sheets are retained on a top of the structural concrete. Concrete is molded around the plurality of rebar mesh sheets, the plurality of rebar rods and the plurality of insulation blocks.

Abstract: A modular stairway preferably includes a tubular beam, a plurality of stringers and a plurality of stair treads. A short modular stairway includes at least two stringers and a plurality of stair treads. The tubular beam includes a rectangular tube, a first end plate and a second end plate. A plurality of redundant tube access openings are formed through a length of each side of the rectangular tube. A fastener hole pattern is formed concentric with each tube access opening. Each stringer includes an elongated section and an end plate. A plurality of redundant stringer access openings are formed through a length of the elongated section. A fastener hole pattern is formed concentric with each stringer access opening. The stair tread is preferably fabricated from a single piece of material. The stair tread includes a step section, a first attachment flange, a support section and a second attachment flange.

Abstract: A modular building panel preferably includes a plurality of lengthwise members, two end members, four corner members and a surface panel. Each lengthwise member and end member includes a first flange, a base member and a second flange. Preferably, two rows of base holes are formed in the base member and one row of first flange holes is formed in the first flange. The base and flange holes are sized to receive fasteners for assembling a plurality of modular building panels in either parallel or perpendicular orientations. Both ends of the lengthwise members are modified for insertion into the two end members. The second flanges of the lengthwise and end members are attached to the surface panel with fasteners. The four corner members are inserted into four corner cavities created by the junction of the two outside lengthwise members and the two end members and secured thereto.

Abstract: A tubular beam for construction of temporary structures preferably includes a rectangular tube, a first end plate and a second end plate. A plurality of tube access openings are formed through each side of the rectangular tube. A fastener hole pattern is formed around each tube access opening. The first and second end plates are attached to each end of the rectangular tube. A plate access opening is formed through the first and second end plates. The fastener hole pattern is formed around the plate access opening. Two or more adjacent tubular beams may be assembled to each other in “I,” “L,” “T” or “double T” configurations by inserting a plurality of threaded fasteners through the fastener holes in each adjacent tubular beam. The plurality of threaded fasteners are secured with a plurality of nuts. A fastening plate may also be used to join two adjacent tubular beams.