HYDRAULIC DRIVE PULSE-TYPE APPARATUS Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: apparatus has liquid pressure source, hydraulic pulsator, actuating device and accumulators. Hydraulic manifold has two circuits, with one circuit containing lubricating liquid and other circuit containing water or other, including more aggressive, liquid. It allows conditions for prolonged operating capacity of apparatus during pulsed supply of any contaminated or aggressive liquid to be provided. Various embodiments of basic units of apparatus are available. EFFECT: increased efficiency and service life. 5 cl, 4 dwg