EXPLOSIVE-ACTUATED MOUNTING GUN Russian patent published in 2002 - IPC

FIELD: explosive actuated hand tools. SUBSTANCE: invention relates to hand tools employing energy of explosion with adjustment of power and it can be used for driving steel expansion bolts into building structures using cartridges of different power. proposed mounting gun has housing, barrel with gas outlet hole and cartridge chamber and piston arranged in barrel bore for acceleration, it has also power regulator provided with adjusting screw and spool placed in space in barrel body communicating with gas outlet hole. Edge of gas outlet hole is made at a distance from barrel bottom equal to m≥1, where m is distance from edge of gas outlet hole to barrel bottom, and l is length of piston acceleration stroke. Power regulator spool is made separately from adjusting screw being spring-loaded for engagement with its edge. EFFECT: provision of initial driving of expansion bolt into partition at constant initial speed within wide range of cartridge powers, increased sensitivity of power regulation, improved layout of device as a whole. 2 dwg