Patent ID: 7607297
Filing Date: 2009-10-27
Classification: F04B

Abstract:
1. Total power controller for at least two pumps, which are each connected to a working conduit, and the conveyed volume of which is separately adjustable by an adjusting device, wherein an adjusting pressure which acts on the adjusting device is adjusted by a total power control valve, each said total power control valve having at least one measuring surface on a slidable spool in said valve for imparting control options to said power controller, a working pressure of one said pump being applied directly to the at least one measuring surface of the total power control valve of the other said pump, the slidable spool in the total power control valve of each pump being actable on by a force which is proportional to the power of the therewith associated pump, in the same direction as the hydraulic force which acts on the at least one measuring surface, a ring surface which forms the at least one measuring surface is formed on each respective valve spool; and the ring surface (