Abstract: Apparatus for providing repeated cranial access comprises a hollow shaft sized to fit within a hole extending through a skull bone, the hollow shaft having a length of at least a thickness of the skull bone, a lip extending laterally form a first end of the hollow shaft for abutting the skull bone around the hole, and, a plug sized to fit into the hollow shaft, the plug extending at least the length of the hollow shaft and configured to be removably secured within the hollow shaft.

Abstract: A fire suppression system including at least one heat-sensing device attached to a CPU-controlled sprinkler, which upon detection of a heat signature, activates the sprinkler to selectively dispense water from a fire sprinkler system pipe or a fire suppressant contained within a canister from a nozzle directly aimed at the source of the heat signature.

Abstract: A system for moving a camera along a predefined path in space, the system comprising: a track (2), the track comprising at least one rail (10, 12); a dolly (4) adapted to ride on the track; and a rack and pinion drive mechanism (6) for driving the dolly along the track. The drive mechanism includes a rack (40) extending along the track and a driven pinion (60) mounted on the dolly, and the rack is positioned vertically inline with the at least one rail of the track.

Abstract: A set of battery jumper cables for placing a discharged battery parallel with a charged battery in order to increase the amount of electrical energy available to the discharged battery. The battery jumper cables include a pair of conductor cables having at each end disengagable clamp handles for coupling terminals of the charged and discharged batteries. One of the conductor cables includes a half wave rectifier biased to permit an electrical charging current from the positive terminal of the charged battery, but prevent reverse flow and potential damage to automobile computer circuitry. In a preferred embodiment the half wave rectifier is replaceably included in one of the disengagable clamp handles of one of the conductor cables. Alternative embodiments include color coding the conductor cables. Other embodiments also include indicia on a clamp handle indicating the bias of the half wave rectifier.