Abstract: A sensor system for protecting products and technology from reverse engineering by detecting attempts to probe electronic circuitry includes a sensor electrically linked to electronic circuitry. The sensor detects interaction of probe devices with the electronic circuitry for the purpose of reverse engineering the electronic circuitry. The sensor includes an exciter and an impedance counter linked to the exciter. A count rate of the impedance counter is a function of the impedance of the electronic circuitry due to the fact that oscillation frequency generated by the exciter is also a function of the impedance of the electronic circuitry. The sensor also includes an impedance register storing the binary count value from the impedance counter, wherein after the impedance counter data is transferred into the impedance register, the data is referred to as impedance data.

Abstract: A crankcase and crankshaft combination wherein the crankshaft includes a first end having a cupped portion formed therein and the crankcase includes a housing section with an inner wall having an inwardly projecting cylindrical stub shaped and dimensioned for placement within the cupped portion.

Abstract: A golf grip training tool utilized on a simulated golf club of reduced length. An abutment is angularly placed on the end of the shaft of the golf club and indicia relating to the placement of the golfer's thumbs and index fingers are attached thereto. Utilizing the abutment and the indicia, the golfer would be able to properly place his or her hands on the upper shaft or handle of the golf club to learn the proper grip.