Abstract: A modular system for constructing an elevated pathway includes a first pathway segment comprising a first elevated platform portion; first edge supports to bare a load of the first elevated platform portion, wherein the first edge supports contact a ground surface and create a grade separation between the ground surface and a bottom side of the first elevated platform portion; and a first joint. The modular system also includes a second pathway segment comprising: a second elevated platform portion; second edge supports to bare a load of the second elevated platform portion, wherein the second edge supports contact the ground surface and create a grade separation between the ground surface and a bottom side of the second elevated platform portion; and a second joint to attach to the first joint to limit a motion of the second pathway segment relative to the first pathway segment.

Abstract: A fast installing self-propelled pontoon bridge consisting of the entrance vehicle (A-1), a vehicle-float which is connected with the entrance vehicle and an exit vehicle, an exit vehicle, and an anchoring vehicle to keep the bridge in one place, being equipped with an anchor to keep the pontoon bridge to resist the water flow.

Abstract: Apparatus for deployment, recovery and/or storage of a resource comprising a flexible length of equipment capable of being wound on a spool, the apparatus comprising a rigid container shaped and configured to be handled by a specified vehicle type, the container having at least a base and a pair of opposing end walls, and an open side or an opening in a side wall thereof, wherein, on said base between said opposing end walls, there is provided a mounting member on which said spool is or can be mounted for rotation about its longitudinal axis. In an exemplary embodiment, the external dimensions of said container conform to the ISO 668 International Standard, and the equipment comprises a surface-covering track comprised of interconnected panels.

Abstract: A bridge laying device (2) for laying a bridge (3), in particular a single-piece bridge, includes a main part (5) for arranging on a load transport vehicle (7), in particular a hook-lift vehicle, a laying arm (12) for setting down the bridge (3), and an extending device (6) for moving the laying arm (12) from a transport position into an extended placing position. In certain embodiments, a bridge laying system (1) includes a load transport vehicle (7), in particular a hook-lift vehicle, and a bridge laying device, (2) which can be arranged on the load transport vehicle (7). A method for laying a bridge (3), in particular a single-piece bridge, using a bridge laying device (2) includes moving an extending device (6) for moving the laying arm (12) from a transport position into an extended placing position.

Abstract: A variably dimensionable bridge (10) comprising pre-engineered components provided in a kit. The pre-engineered components are constructed of fiber reinforced polymer (FRP) composite material and include at least one floor module (14) for providing a floor; at least two girders (12) for providing opposing substantial vertical sides; and at least two cross beams (16) to lend support to the girders (12). A is a method for constructing a bridge (10) of variable dimensions comprising the use of pre-engineered components provided in a flat-pack kit.

Abstract: An asymmetric mast is disclosed that can be used for solar arrays. The asymmetric mast can have an asymmetry out of the plane of the solar blanket. The mast may include two or more booms that comprise slit tube longerons. In some embodiments, a single mast can be used with one or two solar blankets.

Abstract: A vertically-adjustable gantry assembly installation adapted for removal or placement of a train bridge-span of the type which spans and is supported by two piers, comprises a gantry assembly positioned on load-bearing first ground-support locations, the gantry assembly comprising a gantry and a ground-engaging vertical support and lift system, the vertical support and lift system adapted for supporting a combined weight of the gantry and a bridge span in at least one operational vertical position above respective bridge span support-surfaces of the piers including a position corresponding to a disembarking plane in which the leg portions are extended from a stowed position to an extent at least sufficient for the gantry assembly to self-liftoff the pre-installation conveyance system onto the first ground-support locations to effect the gantry assembly installation.

Abstract: A method of installing a dock includes providing first and second dock sections, each having a bottom transport member, and a dock support that supports the dock section when installed. The first dock section is installed adjacent to a shoreline. The dock lifting device of a dock cart is attached to the second dock section and the lifting device of the dock cart lifts the first end of the second dock section such that the second dock section is supported by the bottom transport member and the cart transport member. The cart moves the second dock section along the first dock section until the first end of the second dock section is adjacent to the second end of the first dock section. The lifting device then lowers the first end of the second dock section to be level with the second end of the first dock section.

Abstract: A crossing device aids in crossing from a near side to a far side of an obstacle. It comprises a lead assembly that is projected to the far side of the obstacle and that includes an anchor assembly and a pulley. The anchor assembly has a base, a launch tube that is secured to the base, a spike that is housed within the launch tube, and a propellant charge. The anchor assembly is anchored on the far side of the obstacle by remotely initiating the propellant charge. The explosion force drives the spike through the launch tube and the base, into a landing surface. A bridge is connected to the pulley and is pulled to span across the obstacle. The bridge, lead assembly, and anchor may be collected on the far side for additional uses.

Abstract: A sprung gangway that is counterbalanced to remain in a given degree of extension or retraction includes a lifting resistance device that includes a linear index rail that slides selectively into and out of a hollow sheath unless engaged by a locking paw that is pivotally mounted to the sheath via a pivot bar, which when pivoted by tugging on a release cord effects disengagement of the locking paw and thereby permits raising of the gangway from the lowered working orientation to a storage orientation.

Abstract: A vehicle shuttle car operable to travel in linear and lateral directions includes a low profile cart including a steerable front section and a rear section, the front section operable to turn left and right relative to the rear section. The rear section is operable to raise and support at least one tire of a vehicle off the ground.

Abstract: Disclosed is a mobile conveyor apparatus comprising a bridge provided with at least one transport means for conveying material in the longitudinal direction of the bridge and support means extending from the bridge to the ground whereon the mobile conveyor apparatus is positioned where at least one of the support means is a travel support means connected to the bridge and being capable of moving the bridge on the ground and a movable conveyor arrangement supported by the bridge and configured for a back and forth movement on at least a portion of the bridge and being configured for interaction with the transport means. It is characterized in that at least one of the support means is a temporary support means comprising regulation means capable of establishing and removing ground contact.

Abstract: A vertically-adjustable gantry assembly installation adapted for removal or placement of a train bridge-span of the type which spans and is supported by two piers, comprises a gantry assembly positioned on load-bearing first ground-support locations, the gantry assembly comprising a gantry and a ground-engaging vertical support and lift system, the vertical support and lift system adapted for supporting a combined weight of the gantry and a bridge span in at least one operational vertical position above respective bridge span support-surfaces of the piers including a position corresponding to a disembarking plane in which the leg portions are extended from a stowed position to an extent at least sufficient for the gantry assembly to self-liftoff the pre-installation conveyance system onto the first ground-support locations to effect the gantry assembly installation.

Abstract: A combination of a buried pipeline and a pipeline crossing bridge, the pipeline crossing bridge comprising: a first ground contacting pad and a second ground contacting pad spaced apart from one another; plural ribs with lateral stabilizing elements between adjacent ribs of the plural ribs, in which each rib of the plural ribs is supported on the first ground contacting pad and the second ground contacting pad and the ribs collectively form a raised arch extending between the first ground contacting pad and the second ground contacting pad; an upper crossing surface supported by the plural ribs, in which the pipeline crossing bridge is positioned over the buried pipeline, and in which the buried pipeline has a diameter, and the first ground contacting pad and the second ground contacting pad are spaced apart wider than the diameter of the buried pipeline.

Abstract: A temporary bridge includes bridge elements intended to be superimposed when the bridge is in a non-deployed position. The bridge elements are articulated one relative to another. Each bridge element includes, on at least at one of its ends, a coupling face configured to cooperate with the coupling face of another bridge element so as to assemble these bridge elements when they are placed in an end to end relation. The temporary bridge includes displacement members for each bridge element, superimposed on another bridge element in a first position, called a non deployed one, between this first position and a second position, called a deployed one, where the coupling faces of the bridge element and of the another bridge element are placed facing one another and coupled. Added or not rolling track can be included.

Abstract: A vehicle traction jack that functions as a traction mat platform, ramp, and vehicle jack to assist a vehicle's tire when a tire is stuck in a rut, hole, or some sort of terrain or weather condition such as sand, gravel, dirt, mud, or snow is disclosed. The traction jack comprises a first plate and second plate, a hinge assembly, and a removable center jack mechanism. The first and second plates can extend to a partially-opened or fully-opened position forming a ramp and traction mat platform. The removable center jack mechanism attaches to first plate and second plate via pins. Easily stored in a vehicle at all times, a single user can use the traction jack to help move any type of vehicle's tire.

Abstract: A system for aligning outer edges of upper surfaces of ramp portions of a loading ramp. The system may include a plurality of sensors configured to provide signals indicative of whether the outer edges of upper surfaces of adjacent ramp portions are aligned. The system may also include a plurality of actuators configured to raise and lower at least one of the outer edges of an upper surface of a ramp portion. The system may also include a controller configured to receive signals from the plurality of sensors, determine whether the outer edges of upper surfaces of adjacent ramp portions are aligned, and provide signals to the actuators to affect movement thereof causing the outer edges of the upper surfaces of the adjacent ramp portions to be aligned.

Abstract: An ice access ramp assembly for accessing an ice surface includes a central bridge section and a pair of ramp sections. Each ramp section is pivotably mounted to the central bridge section for movement between a folded configuration and an extended configuration. The ramp sections and the central bridge section have surfaces formed of a low friction material. When the ramp assembly is extended, a first ramp section provides access from an outer floor and enables a sled skater to move up the first ramp section and onto the central bridge section. The sled skater can then move from the central bridge area onto the second ramp section, which provides access onto the ice surface. When not in use, the ramp assembly can be folded for storage and transport. The ramp assembly may include wheels that facilitate transport of the ice access ramp assembly over a floor or other surface.

Abstract: A pre-assembled walkway is provided, comprising an elongated walkway pan, a side railing subassembly, and a plurality of mounting brackets pivotally connecting the side railing subassembly to the walkway pan. The side railing subassembly comprises a plurality of vertical supports and handrails secured to tops of the vertical supports. The walkway is in a collapsed position when the side railing subassembly is pivoted in a first direction to the walkway pan with the vertical supports substantially parallel to the walkway pan and is in an erect position when the side railing subassembly is pivoted in a second, opposite direction with the vertical supports substantially orthogonal to the walkway pan.

Abstract: A temporary bridge includes two spans, each including at least three bridge elements to be stacked when the bridge is in a first so-called non-deployed position. The bridge elements are pivotably connected to one another, wherein two consecutive bridge elements are connected to one another by at least two linking arms mounted on the same side edge of the bridge elements. Two consecutive linking arms form a regular parallelogram with the two consecutive bridge elements connected by the arms, which can be deformed such that the movement of one bridge element relative to a bridge element immediately below in the stack of a span in the non-deployed position of the bridge causes the circular translation of the bridge element relative to the bridge element of the span immediately below. For at least one of the spans, at least one of the linking arms is shared by three consecutive bridge elements.

Abstract: A modular frame structure that can accept buoyancy members for construction of floating structures such as boats, rafts, barges, bridges and other platforms includes generally L-shaped planar sheet form drop gussets having horizontal and vertical leg portions provided with respective upper and lower receivers for connection to upper and lower tubular frame members.

Abstract: A vertically-adjustable gantry assembly installation adapted for removal or placement of a train bridge-span of the type which spans and is supported by two piers, comprises a gantry assembly positioned on load-bearing first ground-support locations, the gantry assembly comprising a gantry and a ground-engaging vertical support and lift system, the vertical support and lift system adapted for supporting a combined weight of the gantry and a bridge span in at least one operational vertical position above respective bridge span support-surfaces of the piers including a position corresponding to a disembarking plane in which the leg portions are extended from a stowed position to an extent at least sufficient for the gantry assembly to self-liftoff the pre-installation conveyance system onto the first ground-support locations to effect the gantry assembly installation.

Abstract: A modular crossing system generally includes a set of modules and a set of segments (e.g., bridge segments). Each segment includes a subset of the set of modules, and at least a portion of the set of segments are configured to be rotateably interlocked with a subsequent segment such that the set of segments form a crossing assembly having a deployed state and a collapsed state. Each module of the set of modules may include a hinge pin opening configured to removeably accept one of the set of hinge pins. The set of segments may be rotateably interlocked via the set of hinge pins.

Abstract: The present invention is a modular deck system with height adjustable leg assemblies. The deck modules each have a top panel, a support frame, and a leg receptacle. The leg assemblies include a base foot, an adjustment bolt and a leg bracket with four legs extending perpendicularly from a bracket plate. A height adjustment bolt is fixed to the base of the leg assembly and extends perpendicularly from the base through an aperture in the bracket plate. The deck modules are placed adjacent to each other, side-by-side and end-to-end in the desired layout, then secured with the leg assemblies. Leveling of the deck modules is achieved through rotation of the adjustment bolts.

Abstract: Boom of a laying mechanism of a bridge laying vehicle, the laying mechanism being composed of a placement arm and the boom. The boom includes a base member that can be fixedly secured to the vehicle by at least one securement device. A jib, especially with locking elements for locking a bridge element in place, is moveable relative to the base member. A pivot member is pivotably disposed on the base member, and the jib is pivotably disposed on the pivot member. Pursuant to the method for moving the boom into a vehicle transport position, the jib is pivoted about a pivot axis in the forward direction of travel by raising the pivot axis of the jib.

Abstract: An apparatus that includes a mainframe, first and second adjustment disks, an L-arm, and a drive is provided. The mainframe can associate with a hitch of a vehicle, and the first and second adjustment disks can be connected to respective first and second sides of the mainframe. The L-arm can connect to each of the first and second adjustment disks at a plurality of affixation points, and the drive can be braced between the mainframe and the L-arm so as to be capable of supporting the L-arm in a first position. Dimensions of the vehicle can effect at which affixation point in the plurality of affixation points that the L-arm connects to the first and second adjustment disks.

Abstract: An apparatus for carrying a bridge on a vehicle and deploying the bridge to the ground is disclosed. The apparatus comprises a mounting bracket for mounting the apparatus to a vehicle, and a foot pivotable relative to the mounting bracket between a first position in which the foot engages the ground for supporting a bridge and a second position in which the foot is separated from the ground to permit movement of the vehicle. A bridge engaging probe is pivotable relative to the foot between a third position in which the bridge is on the ground and a fourth position in which the center of gravity of the bridge is raised relative to the third position. First and second cylinder actuators pivot the probe between the third and fourth positions. Third and fourth cylinder actuators pivot the foot between the first and second positions.

Abstract: This invention is intended for use in outdoor activities where a firm, continuous, strong, and maintenance free walking surface that overcomes obstacles such as wetness, mud, rocks, and uneven terrains with simple-to-expand, light-weight, and easily transported attributes is desired.

Abstract: A temporary bridge includes two spans, each including at least three bridge elements to be stacked when the bridge is in a first so-called non-deployed position. The bridge elements are pivotably connected to one another, wherein two consecutive bridge elements are connected to one another by at least two linking arms mounted on the same side edge of the bridge elements. Two consecutive linking arms form a regular parallelogram with the two consecutive bridge elements connected by the arms, which can be deformed such that the movement of one bridge element relative to a bridge element immediately below in the stack of a span in the non-deployed position of the bridge causes the circular translation of the bridge element relative to the bridge element of the span immediately below. For at least one of the spans, at least one of the linking arms is shared by three consecutive bridge elements.

Abstract: A foldable stretcher for transporting an object. The stretcher comprising: a plurality of substantially plane members pivotally connected with each other in series by means of hinges there between; handles pivotally connected to outermost of the plane members; and, at least two pluralities of props. The stretcher further comprises at least two pairs of sufficiently stiff wires. Each pair of the wires arranged along a corresponding long side of the stretcher; each the wire is mechanically connected to the stretcher at least two connection points; the handles adapted for actuating a tautening of at least one of the wires of each pair of wires by fixation of the handles when the stretcher is in the unfolded position.

Abstract: A system for transporting a span on a road vehicle capable of being transformed into an amphibious vehicle, enabling crossing of a dry or water-filled gap by any road vehicle. The vehicle for transporting the span is amphibious to allow any vehicle to cross a gap filled with water by transferring and transporting the vehicle on the span supported on the amphibious vehicle operating as a floating ferry. The invention is particularly applicable in the field of civil or military engineering.

Abstract: A method and apparatus for the placement of a bridge element using a vehicle having a placement arm, and a use of the apparatus. The placement arm has at least one drive element adapted to cooperate with the bridge element. A braking device is disposed in the vicinity of the deposition end of the placement arm and cooperates with the bridge element during a placement procedure. The bridge element is braked via an engagement element of the braking device. Movement of the bridge element in a longitudinal direction can be measured and monitored, and in the event of an uncontrolled movement the bridge element can be braked.

Abstract: An inflatable tube (10) in a fascine is provided with a cover (11) of a braided material to provide significant strength. An outer cover (12) of KEVLAR™ may also be provided. The braided cover (11) and the inflatable tube (10) are held at the ends of the tube by a clamping mechanism (17, 18, 19) and a cylinder (40) of inflation gas is supported within the tube (10), when the tube (10) is inflated.

Abstract: Access means are provided for accessing a fixed offshore structure such as a wind turbine (70), larger vessel or the like form a smaller transfer vessel (50), or for providing for transfer between vessels One or more guide wires (12) are connected from the vessel (50) to the fixed structure (70) or second vessel and placed in tension such as by directing the transfer vessel away from the fixed structure. In one embodiment, inflatable, members are suspendable from the guide wires and inflation of the inflatable members causes them to extend along the guide wires to form an access surface (56) across which personnel may walk to access the fixed structure or second vessel from the first vessel Mounting means are also provided which accommodate relative rotational, translational and pitching movement of the apparatus and vessel, caused by wave motion. In another embodiment, a bridge member is retained on a runway of the first vessel and deployed using said guide wires (12).

Abstract: A bridge deck (20) includes a plurality of rows (72, 74) of tubes (44) each extending between tube ends (46) with the tubes (44) disposed adjacent to each other in a side by side relationship. The bridge deck (20) includes lifting blocks (60, 70) having a square periphery with equal block sides (58) disposed therein abutting one of the tube ends (46) of at least one of the tubes (44) and laterally engaging adjacent tubes (44) on either side of the one tube (44). The rows (72, 74) include block rows (72, 74) defining two tubes (44) abutting one of the block sides (58) of one of the lifting blocks (60, 70). The block rows (72, 74) include end-block rows (74) having one of the tubes (44) abutting one of the block sides (58) of one of the lifting blocks (60, 70) at each tube end (46) thereof. The block rows (72, 74) include mid-block rows (72) having two tubes (44) abutting opposite block sides (58) of one of the lifting blocks (60, 70).

Abstract: The invention relates to a pneumatic support (1) which can be folded together as a result of joints (10) in the pressure member (3) and has a flexible web (12) that is connected to the tractive member (4) over the entire length of the latter and is connected to the pressure member (3) only in the region of the joints of said member (10). This allows the joints (10) to be fixed in such a way that the pressure member (3) does not buckle at the site of the joints and thus remains stable.

Abstract: An apparatus for carrying a bridge on a vehicle and deploying the bridge to the ground is disclosed. The apparatus comprises a mounting bracket for mounting the apparatus to a vehicle, and a foot pivotable relative to the mounting bracket between a first position in which the foot engages the ground for supporting a bridge and a second position in which the foot is separated from the ground to permit movement of the vehicle. A bridge engaging probe is pivotable relative to the foot between a third position in which the bridge is on the ground and a fourth position in which the centre of gravity of the bridge is raised relative to the third position. First and second cylinder actuators pivot the probe between the third and fourth positions. Third and fourth cylinder actuators pivot the foot between the first and second positions.

Abstract: A travel support device for a conveyor bridge 4 having a swivel joint 12, a two-axis tilting joint 10 and a roller table 8. A portion of the tilting joint 10 is mounted to the swivel joint 12 and another portion of the tilting joint 10 is mounted to the roller table 8 such that the tilting joint 10 rotates about a defined longitudinal axis 30 and an axis 32 transverse of the longitudinal axis 30.

Abstract: A method for laying a military bridge over an obstacle in a combat zone with using at least one laying vehicle. First, the bridge is loaded on a self-propelled, unmanned, remote-controlled laying vehicle and transported to the edge of the combat zone by water, air, rail, and/or road. From this point, the laying vehicle with the bridge is guided by a manned pilot vehicle to the vicinity of the obstacle. The laying vehicle then begins an automatic slow approach to the obstacle, for which purpose the laying vehicle has a suitable optical system or a laser scanner. At the edge of the obstacle, the topographical situation is scanned. On the basis of the scanner data, the laying operation is simulated, taking into consideration the predetermined design limits. On the basis of the simulation results, a decision is made about whether the laying operation will be carried out or broken off. This decision is then executed.

Abstract: Disclosed is a modular bridge, typically for temporary use to enable persons to pass between upper floors of adjacent buildings during fire fighting or disaster relief operations, which can be rapidly assembled and deployed within a confined space and entirely from the “home” side of the gap to be crossed. It comprises a plurality of man-portable box section bridge modules adapted to be connected together end to end and projected in cantilever fashion from one side of the gap to the other. The assembly of modules is supported in and guided through a launch frame, with modules being added to the rear of the assembly and pushed through the frame until the gap is spanned. Removable lever arms of the frame are used to counterbalance the weight of the projected bridge modules during the course of deployment.

Abstract: A temporary bridge includes bridge elements intended to be superimposed when the bridge is in a non-deployed position. The bridge elements are articulated one relative to another. Each bridge element includes, on at least at one of its ends, a coupling face configured to cooperate with the coupling face of another bridge element so as to assemble these bridge elements when they are placed in an end to end relation. The temporary bridge includes displacement members for each bridge element, superimposed on another bridge element in a first position, called a non deployed one, between this first position and a second position, called a deployed one, where the coupling faces of the bridge element and of the another bridge element are placed facing one another and coupled. Added or not rolling track can be included.

Abstract: A mobile bridge of great length is a support construction for at least one transport means, which particularly avoids constraints and undefined stresses as a result of temperature variations and/or support lowering movements, for example, to the greatest possible extent. This will guarantee a statically definite system, is essentially accomplished in that the bridge, in its totality, forms a multi-member statically definite system in the vertical plane, and a statically definite continuous carrier in the horizontal plane. The bridge segments of the bridge are connected with one another, in articulated manner, exclusively in the vertical plane, and the bridge is supported by means of at least three bearing mechanisms of a type A, B, and C having different static valence. Each bearing mechanism of the type A, B, C is carried by a self-propelled, tip-proof traveling mechanism.

Abstract: An attachment for transporting and launching military bridges with light armored vehicles is provided. The attachment includes a deck adapter for removable attachment to the upper deck of the vehicle, and a front adapter to be removably attached to the bow of the vehicle. The front adapter has a framework matched to the bow of the vehicle and is removably attached to the bow. This includes a launching beam, attached to the framework in a pivoting manner, with a motor-driven pinion for moving the bridge. In addition, a support foot is attached to the framework in a pivoting manner. Lifting cylinders are provided for raising and lowering the launching beam and the support foot.

Abstract: A mobile bridge of great length is a support construction for at least one transport, which particularly avoids constraints and undefined stresses as a result of temperature variations and/or support lowering movements, for example, to the greatest possible extent. This will guarantee a statically definite system, is essentially accomplished in that the bridge, in its totality, forms a multi-member statically definite system in the vertical plane, and a statically definite continuous carrier in the horizontal plane. The bridge segments of the bridge are connected with one another, in articulated manner, exclusively in the vertical plane, and the bridge is supported by at least three bearing mechanisms of a type A, B, and C having different static valence. Each bearing mechanism of the type A, B, C is carried by a self-propelled, tip-proof traveling mechanism.

Abstract: A mobile compression and tension bridge and shelter structure having a plurality of individual structural elements that are parallel to each other and perpendicular to the length of the bridge or shelter. The structural elements are flexibly connected to one another on a bottom surface forming an arch caused by the shape of the elements or by placing spacers between the elements with at least one tension device attached to each structural element.

Abstract: Mobile bridge system with at least one bridge section comprising two articulatedly interconnected parts, and a bridge laying vehicle provided with a lifting frame hydraulically pivotable from the horizontal transportation position into a vertical laying position, carrying a lowering frame guiding a laying cable and pivotably resting on the vehicle. One part of the bridge section, during the transportation thereof, rests a downwardly directed roadway surface on the lifting frame and is locked thereto, while the other part of the bridge section during the transportation thereof rests with an upwardly directed roadway surface on the first part. A lowering frame is fixed to the lifting frame so as to be displaceable beyond its free end and the other part of the bridge section is provided in the vicinity of its free end with outwardly pivotably mounted, length-adjustable trestle legs.

Abstract: A method and apparatus for the placement of a bridge element using a vehicle having a placement arm, and a use of the apparatus. The placement arm has at least one drive element adapted to cooperate with the bridge element. A braking device is disposed in the vicinity of the deposition end of the placement arm and cooperates with the bridge element during a placement procedure. The bridge element is braked via an engagement element of the braking device. Movement of the bridge element in a longitudinal direction can be measured and monitored, and in the event of an uncontrolled movement the bridge element can be braked.

Abstract: A portable floor surface and method of use thereof facilitates unloading side-by-side cargo carts disposed in laterally spaced relation with an aisle defined between them. The floor surface has a body with opposite front and rear ends and lower and upper surfaces extending between the front and rear ends. The upper surface is brought into a generally flush relation with the floor of the cargo cart when the lower surface is resting on a common floor surface with the cargo cart. A ramp surface extends at an upward inclination from the front end toward the rear end and a latch member operably associated with the body is adapted for operable engagement with a first cargo cart to releasably lock the portable floor surface to the first cargo cart.

Abstract: A mobile bridge of great length is a support construction for at least one transport means, which particularly avoids constraints and undefined stresses as a result of temperature variations and/or support lowering movements, for example, to the greatest possible extent. This will guarantee a statically definite system, is essentially accomplished in that the bridge, in its totality, forms a multi-member statically definite system in the vertical plane, and a statically definite continuous carrier in the horizontal plane. The bridge segments of the bridge are connected with one another, in articulated manner, exclusively in the vertical plane, and the bridge is supported by means of at least three bearing mechanisms of a type A, B, and C having different static valence. Each bearing mechanism of the type A, B, C is carried by a self-propelled, tip-proof traveling mechanism.

Abstract: A tactical footbridge comprises two or more bridge segments and one or more pivotal connection assemblies. The one or more pivotal connection assemblies engage two of the at two or more bridge segments. Each pivotal connection assembly comprises a first member, a second member, a first axial connector, and a second axial connector. The first member engages a first of the two bridge segments. The first member has a pivot hole and a bridge hole. The second member engages a second of the two bridge segments. The second member also has a pivot hole and a bridge hole. The first axial connector selectively extends through the pivot holes of the first and second members to pivotally connect the two bridge segments such that the connected bridge segments selectively pivot between a collapsed position in which the connected bridge segments are proximal to one another, and a bridge position in which the connected bridge segments are in an expanded angularly-disposed relationship with one another.