Abstract: Disclosed is a portable pump including a reciprocating air compressor arrangement with a crank driving a connecting rod and a piston within a cylinder, the connecting rod being connected to the crank and piston, the crank actuating the piston in a reciprocating motion within and relative to the cylinder, an electric motor having a drive shaft mounted to the crank and rotatable about a drive shaft axis, the drive shaft axis being at least substantially coaxially aligned with an axis of rotation of the crank, a control unit communicating with the electric motor to control the pump, a power supply communicating with the control unit to power the control unit and electric motor, a common housing containing the electric motor, reciprocating air compressor arrangement, control unit, and power supply, and an outlet fluidly connected to the reciprocating air compressor arrangement for fluidly engaging with an pumpable object.

Abstract: A portable pump is provided including an electric motor having a drive shaft connected to a gear assembly to drive a reciprocating air compressor arrangement. The reciprocating air compressor arrangement includes a crank that drives a connecting rod and a piston within a cylinder. The connecting rod has a first end and a second end and the first end of the rod is connected to the crank while the second end of the rod connected to the piston (to drive the piston in the cylinder and provide compression). The second end of the connecting rod is connected to the piston via a pin. The piston includes a sealing arrangement. A control unit is provided which is in electrical communication with the electric motor and the air compressor to control the operation of the pump arrangement. A power supply is also provided in electrical communication with the control unit to supply power to the control unit and electric motor.