PNEUMATIC PRICK PUNCH Russian patent published in 1999 - IPC

FIELD: mechanical engineering, construction and mining industry. SUBSTANCE: pneumatic prick punch has casing, box positioned in front part of casing and provided with axial opening, movable working tool disposed in axial opening and equipped with shoulder having supporting surfaces and resiliently damping member. Box is made from resiliently damping material. Resiliently damping member is positioned at both sides of working tool shoulder. Thin-walled enclosure is disposed on mid portion of casing. EFFECT: increased efficiency, enhanced reliability in operation and reduced hazardous action of impacts upon operator's hands. 1 dwg