Patent ID: 6802702
Filing Date: 2004-10-12
Classification: F04C

Abstract:
A feed pump for fluidic media comprising:a pump housing including: a product channel for recirculation of a fed medium that lubricates the sleeve bearings, the product channel having at least a suction side; a displacement body mounted in said product channel; sleeve bearings in fluid communication with the product channel; and connecting channels in fluid communication with the sleeve bearings and connected to the product channel on the suction side; a housing cover position adjacent the housing including: control channels leading to the exterior of the housing cover and guide channels connected to the control channels and to the connecting channels of the housing; valve plungers configured to be received in the guide channels of the housing cover, the valve plungers each having a constriction and each having a section positioned adjacent to the product channel of the pump housing that has a length and a diameter that correspond to the length and the diameter of the connecting channel.