DEVICE FOR HYDRAULIC SHOOTING WELL Russian patent published in 1996 - IPC

FIELD: secondary opening productive strata. SUBSTANCE: device has a case with lengthwise passage and lateral openings. The openings are originated slots on opposite sides with respect to one another at the same level and in one vertical plane. Extensions are installed in eccentric lateral openings. The case of the section filled with oil with axial passage and hydraulic cylinders placed at different levels and in the same vertical plane perpendicular to the plane of lateral openings and on opposite side from the latter is placed st the bottom. elastic cylinder overlaps oil filled cavity from the top. Sealing ring sleeves and spring loaded rods are placed in hydraulic cylinders. The rods have opening for circulation. The rod have balls. They are placed on the side of work surfaces. EFFECT: deepened shot passages. 4 dwg