DRIVING MECHANISM FOR A PORTABLE PERCUSSION TOOL AND VARIANTS THEREOF

摘要

The proposed driving mechanism for a portable percussion tool is provided with a device (9) for regulating the pressure in the working chamber (3), the device taking the form of a set of auxiliary combustion chambers (10). The said auxiliary combustion chambers contain charges (8), each charge being connected to the working chamber (3) by an auxiliary channel (11) which is provided with a check valve (12). A device (7) for firing the charges (8) is provided in the form of electrical fuzes (13) in the auxiliary combustion chambers (10), the fuzes being connected to the power source (14) by a controllable switch (15) capable of actuating a combination of fuzes (13). Other variants are provided in addition with a synchronization unit (24), pressure-reducing valve (26) and pressure gauge (27), while having a controllable switch (15) in the form of electronic programmable devices.