Abstract: A system for transmitting power and data between two circuit boards may include a fixed circuit board having a primary coil and a rotatable circuit board having a secondary coil. The system may further include a sensor in communication with the secondary coil of the rotatable circuit board. The fixed circuit board's primary coil may be inductively coupled to the secondary coil and may provide power and receive data from the sensor when inductively coupled to the secondary coil.

Abstract: A small-scale fragmenting projectile capable of remaining intact when contacting a soft target but fragmenting when contacting a hard target. The projectile is made of a hard material and includes a cylindrical body, a head and an end, the cylindrical body having a plurality of grooves extending radially into and substantially around the circumference of the cylindrical body. The grooves are sized and shaped to avoid projectile fragmentation on impact with a soft target but to fragment when impacting a hard target.

Abstract: This invention deals with a retractable tonneau top which is suitable for use on the open-bed of a truck, trailer or wagon. This tonneau top comprises a piece of covering material which is carried by a stationary bow structure, a movable bow structure and a plurality of intermediate bow structures which are located between the stationary and movable bow structures. The movable and intermediate bow structures laterally move along a pair of tracks which are attached to the opposing side walls of the open-bed. Movement of the top is controlled by means of a crank. Rotational movement of this crank is simultaneously imparted to a drive chain associated with each track. Each of these drive chains is in turn coupled with the movable bow structure such that the movable bow structure is capable of moving in combination therewith.