Abstract: My invention is a device used to analyze the movement of a firearm prior to discharge to be used to train the shooter marksmanship. A series of motion sensors such as accelerometers and angle rate indicators (commonly called gyroscopes) are mounted in either the magazine inserted into the firearm, on a device designed to mount onto the firearm, or made as a permanent part of the firearm or a simulated firearm. These sensors will measure the motion of the firearm in up to six degrees of freedom in three dimensional space as well as detect the fall of the hammer or firing mechanism. The data from these sensors prior to the detection of the hammer falling is then sent to a computer either by wires or by a wireless transmission where the data is analyzed to detect the motion of the firearm prior to the hammer falling. This device can be used without ammunition (dry firing) or as an analysis of live fire performance.

Abstract: A hand-held electric knife is described that utilizes rotating elements to produce vibrations to assist in the cutting process. The elements may be arranged as to gyroscopically stabilize the tool while cutting.