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 portable video frame system. A projector such as an LCD lightweight projector is removably mounted to a triangular top frame portion. Support brackets are removably mounted to this top frame portion and to a rear frame portion. The rear frame portion is itself supported on a base having sufficient weight to support the entire assembly. Optionally, at least a portion of the weight is provided by necessary ancillary equipment, such as speakers. A conventional snap screen snaps onto the rear frame portion, and is always the same distance from the projector. The entire assembly can be readily disassembled and moved to a different location.