HYDRAULIC PULSE GENERATOR

A hydraulic pulse generator comprises a hydropneumatic accumulator communicating with a supply line and connected to an oscillator having a housing accommodating a hollow piston defining in this housing a discharge-opening chamber and a discharge-closing chamber. There are formed in the housing a low-pres-sure chamber with a discharge nozzle and a high -pressure chamber communicating with the work nozzle. The generator further comprises a mechanism for controlling the motion of the hollow piston, establishing communicating between the high-pressure chamber and the discharge-opening chamber, and including a control valve, the discharge-closing chamber being isolated from the inner space of the hollow piston and communicating with the supply line, and also communicating with the ambient atmosphere through the mechanism for controlling the motion of the hollow piston.