Abstract: A wall mountable mirror includes an enclosure and a replaceable film sheet allowing easy repair to commercial bathroom mirrors following vandalism. The enclosure includes a backing frame and a face frame. The backing frame is mounted to a wall and the face frame is connected to the backing frame by two pairs of parallel links. A top link pair is preferably longer than a bottom link pair. The film sheet includes small edge rods attached along each edge. The face is pulled out and down to open the enclosure to replace the film sheet. When the face is closed, the last closing motion provided by the links is a parallel motion which uniformly stretches the film sheet by pushing the edge rods over corresponding curved tensioning members to stretch the film sheet providing uniform stretching in two dimensions to provide a flat reflecting surface.

Abstract: A lightweight armor system senses a shock wave from an explosive and deploys an inflatable barrier before the arrival of shrapnel from the explosion. The sensor is tuned to frequencies associated with shock waves generated by known Improvised Explosive Devices (IEDs). The shock waves travel at between 25,000 and 30,000 feet per second and arrives at a vehicle before the shrapnel generated by the IED. The sensor generates a signal which is amplified and provided to a plurality of initiators in a plurality of nested pods. The nested pods inflate rapidly and form a barrier over areas requiring protection from the shrapnel.

Abstract: A switch provides a sprinkler valve signal to a first sprinkler valve, and after a period of time, diverts the sprinkler valve signal to a second sprinkler valve. The switch is serially wired into sprinkler wires running between a timer and at least two sprinkler valves, and operates off the sprinkler valve signal present in the sprinkler wires. When the sprinkler valve signal comes on, the switch provides the sprinkler valve signal to the first sprinkler valve and starts a clock which counts for a period of time T. When the period of time T passes, the clock switches a relay which switches the sprinkler valve signal to the second sprinkler valve.