PULSE TYPE CUTTING PORTABLE DEVICE Russian patent published in 2006 - IPC B23D29/00 B23D17/06 

FIELD: equipment used, mainly at extreme condition for cutting reinforcement.

SUBSTANCE: device includes cylinder with openings for releasing gas, piston with rod and actuating mechanism. Device is provided with sleeve mounted in cylinder with possibility of axial motion. Said sleeve has mass less than common mass of piston with rod and of actuating mechanism. Sleeve is mounted with possibility of placing piston with rod inside it and it has grooves whose length exceeds height of piston. In bottom of sleeve there are openings that may be matched with gas releasing openings of cylinder.

EFFECT: increased useful life period, lowered mass of device.

3 dwg