Patent ID: 6625983
Filing Date: 2003-09-30
Classification: F16D

Abstract:
An hydraulic power system for operating an actuator mechanism comprising:a reservoir retaining an hydraulic fluid; an electrically powered reversible motor having a first direction of rotation and a second direction of rotation, wherein said motor is submerged in said hydraulic fluid within said reservoir, said hydraulic fluid acting as a heat dissipater for heat created by said motor; a pump driven by said motor for removing said hydraulic fluid from said reservoir and delivering said hydraulic fluid to an actuator mechanism; a first suction conduit and a second suction conduit for removing said hydraulic fluid from said reservoir, wherein the direction of rotation of said motor determines whether said hydraulic fluid is drawn through said first suction conduit or said second suction conduit; a first deliver/return conduit and a second delivery/return conduit for delivering said hydraulic fluid from said reservoir to said actuator mechanism, wherein the direction of rotation of said motor determines whether said hydraulic fluid is delivered through said first deliver/return conduit or said second delivery/return conduit and means to balance the flow of said hydraulic fluid when said direction of rotation is changed.