Embodiments of the invention related generally to ladders and ramps and, more particularly, to collapsible ladders and ramps for a vehicle tailgate and related systems. In one embodiment, the invention provides a system comprising: a tailgate member for a vehicle, the tailgate member having: an interior wall; an exterior wall; and a cavity between the interior and exterior walls; at least one collapsible ladder device comprising: a pair of substantially parallel elongate members; a plurality of cross members, each of the plurality extending between and lying substantially perpendicular to the pair of substantially elongate members; and an attachment device for non-fixedly securing the at least one collapsible ladder device within the cavity of the tailgate member.

An L-shaped track has a vertical part configured to stand on the ground, a horizontal part configured to span over a roof, and a curved part in between. A motor-driven winch moves a carriage up and down the track. The carriage engages a skylight, which can be quickly and easily hoisted from the ground to the roof up the track to the roof to install the skylight.

An assault ladder system, method and device for scaling objects while breaching glass windows. The assault ladder includes a ladder frame having one or more top grappling hooks for hooking onto a ledge as well as one or more window breaker rods for breaking any glass blocking a path at the top of the ladder.

An assault ladder system, method and device for scaling objects while breaching glass windows. The assault ladder includes a ladder frame having one or more top grappling hooks for hooking onto a ledge as well as one or more window breaker rods for breaking any glass blocking a path at the top of the ladder.

A modular ladder having a single, central column for supporting radiating steps is shown and described. Steps are pivotally mounted on the central column to generate attachable modules. The steps fold up to a stowed position to minimize bulk when the ladder is not in use, and fold down to a nearly but not quite perpendicular position to facilitate climbing. The steps are held frictionally in the stowed position and by gravity in a deployed position when nearly perpendicular to the central mast. The ladder has a removable foot module for stability when propping the ladder on the ground. Each module bearing steps includes an integral loop for attachment of anchoring straps when desired.

A modular ladder having a single, central column for supporting radiating steps is shown and described. Steps are pivotally mounted on the central column to generate attachable modules. The steps fold up to a stowed position to minimize bulk when the ladder is not in use, and fold down to a nearly but not quite perpendicular position to facilitate climbing. The steps are held frictionally in the stowed position and by gravity in a deployed position when nearly perpendicular to the central mast. The ladder has a removable foot module for stability when propping the ladder on the ground. Each module bearing steps includes an integral loop for attachment of anchoring straps when desired.

A portable ladder for securing to an object, such as a tree, is provided. The portable ladder includes first and second vertical supports, each with a channel extending therethrough. The vertical supports can be coupled together to form a ladder segment. The portable ladder also includes a plurality of steps coupled to the first and second vertical supports, and a primary strap extending through the channels in the first and second vertical supports. The first end of the primary strap extends out of the channel in the first vertical support and is configured to be wrapped around the object to form a strap loop, and the second end of the primary strap extends out of the channel in the second vertical support. The portable ladder further includes a locking device configured to lock the first end of the primary strap to the first vertical support, and a ratchet mechanism configured to be coupled to the second end of the primary strap to adjust the tension in the primary strap to tighten the strap loop around the object. Methods of securing the portable ladder to an object are also provided.

A portable ladder for securing to an object, such as a tree, is provided. The portable ladder includes first and second vertical supports, each with a channel extending therethrough. The vertical supports can be coupled together to form a ladder segment. The portable ladder also includes a plurality of steps coupled to the first and second vertical supports, and a primary strap extending through the channels in the first and second vertical supports. The first end of the primary strap extends out of the channel in the first vertical support and is configured to be wrapped around the object to form a strap loop, and the second end of the primary strap extends out of the channel in the second vertical support. The portable ladder further includes a locking device configured to lock the first end of the primary strap to the first vertical support, and a ratchet mechanism configured to be coupled to the second end of the primary strap to adjust the tension in the primary strap to tighten the strap loop around the object. Methods of securing the portable ladder to an object are also provided.

Survivability and assault multi-tool assemblies and systems that can be used in combat and tactical situations. Exemplary survivability and assault multi-tool assemblies can include a first side support, a second side support, a middle rung coupled with the first side support and the second side support, a panel coupled with the first side support and the second side support, a folding rung pivotably coupled with the first side support and the second side support, and a sliding rung slidingly received by the first side support and the second side support. Multiple survivability and assault multi-tool assemblies can be coupled together to form a survivability and assault multi-tool system.

Survivability and assault multi-tool assemblies and systems that can be used in combat and tactical situations. Exemplary survivability and assault multi-tool assemblies can include a first side support, a second side support, a middle rung coupled with the first side support and the second side support, a panel coupled with the first side support and the second side support, a folding rung pivotably coupled with the first side support and the second side support, and a sliding rung slidingly received by the first side support and the second side support. Multiple survivability and assault multi-tool assemblies can be coupled together to form a survivability and assault multi-tool system.