CONSTRUCTING-AND-MOUNTING GUN AND SPRING THEREOF Russian patent published in 2004 - IPC

FIELD: constructing-and-mounting gun for fastening member driving in, particularly for peg or pin driving in. SUBSTANCE: gun has body and working plunger movably inserted in gun body. Working plunger can perform reciprocal motion for fastening member driving. Working member is actuated by ignition charge. Gun has spring formed of resiliently deformable material, particularly of elastic material. Spring moves working piston into initial position after driving cycle. Spring has non-deformable reinforcement members distributed along spring length and having orifices. Spring is vulcanized through reinforcement member orifices. EFFECT: prevention of uncontrolled elastic bush deformation during working plunger movement with quick acceleration. 13 cl, 2 dwg