A right-angle accessory saw for use with an electric drill comprises a drive shaft housing and a saw head. Efficiency and power benefits accrue from the integration of electric motor components into various components of combustion-fueled engines, thus obviating the need for much separate equipment, such as discrete electric motor and gear arrangements in order to obtain hybrid operation. The arrangement is such that the extent of the configuration of the insert layer is maintained substantially throughout the envelope, flexibility is maintained by slippage between contiguous faces of the insert layer and at least a wall of the envelope, and compression and redistribution of air occurs where and when any point of the hip pad assemblage is subject to impact. The dental implant system providing for efficient, minimum invasive and permanent teeth replacement for the patient. The evaluation electronics system, in this instance, has a regulation member in order to minimize an undesired deflection of the first and second seismic masses, caused by interference influences. In one embodiment, received messages can be interpreted as commands to the device, based on pre-defined instructions.