Patent ID: 9587641
Date: 2017-03-07
CPC Classifications: F04D

Claim:
1. A pump assembly, comprising: a centrifugal pump having an intake, a discharge, a pump chamber, and an impeller disposed within the pump chamber; a priming system including a passageway fluidly coupled to the pump chamber, two piston assemblies and an air outlet; and a drive assembly including an impeller shaft coupled to the impeller, a drive shaft coupled to the priming system and a clutch assembly coupled to the impeller shaft, the clutch assembly configured to selectively rotationally couple the drive shaft and the impeller shaft, wherein the drive shaft is coaxial with and surrounds the impeller shaft, wherein the two piston assemblies are positioned on opposite sides of the drive shaft and the drive shaft includes an eccentric portion engaging the piston assemblies to provide reciprocating motion of the piston assemblies upon rotation of the drive shaft.