VANE PUMP WITH BYPASS FOR LEAKAGE OF FLUID WHEN BOTTOM OF VANE IS CONNECTED TO UNDERVANE SUCTION PORT

摘要

VANE PUMP WITH BYPASS FOR LEAKAGE OF FLUID WHEN BOTTOM OF VANE IS CONNECTED TO UNDERVANE SUCTION PORT The instant invention provides an improved vane for a vane pump which incorporates an extended undervane suction port. The vane has a restricted passage which connects the inner and outer ends of the vane and an unrestricted passage which connects the outer end of the vane and the suction side of the vane when the leading edge of the vane is exposed to the pressure port and the inner end of the vane is connected to the suction port.