SPOOL VALVE CHEST Russian patent published in 1999 - IPC

FIELD: transport engineering; vehicle transmission gearshifting interlocks. SUBSTANCE: spool valve chest has housing, spool valves connected with pressure and return hydraulic lines of hydraulic system and hydraulic line to deliver working liquid into space of corresponding actuating mechanism. Spool valves have additional outlet providing possibility of connection of spool valve with its inlet and with return hydraulic line of hydraulic system. Additional outlet of each spool valve, preceding in direction of working liquid flow from pressure hydraulic line of hydraulic system, is connected with inlet of following spool valve, and pressure hydraulic line of hydraulic system is directly connected only with inlet of one of spool valves. EFFECT: simplified design, enlarged functional capabilities of device. 5 dwg